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Joint Russian Norwegian Arctic Fisheries Working Group (JRN-AFWG) Report 2024

Forfatter(e): Daniel Howell , Magnus Aune , Bjarte Bogstad (HI), Anatoly Chetyrkin (VNIRO), Johanna Fall (HI), Anatoly Filin (VNIRO), Jane Aanestad Godiksen , Elvar H. Hallfredsson , Edda Johannesen (HI), Yuri Kovalev (VNIRO), Andrey Mikhailov (VNIRO), Alexey Russkikh (VNIRO), Aleksi Stesko, (VNIRO), Dmitri Vasilyev (VNIRO), Mikko Vihtakari , Tone Vollen , Kristin Windsland (HI) og Natalia Yaragina (VNIRO

Sammendrag

On 30th March 2022 all Russian participation in ICES was temporally suspended. Although the announcement of the suspension stressed the role of ICES as a “multilateral science organization”, this suspension applied not only to research activities, but also to the ICES work providing fisheries advice for the sustainable management of fish stocks and ecosystems. As a result of the suspension, the ICES AFWG provided advice only for saithe, coastal cod north, coastal cod south, and golden redfish (Sebastes norvegicus). Northeast Arctic (NEA) cod, haddock and Greenland halibut assessments have been conducted outside of ICES in a newly constituted Joint Russian-Norwegian Working Group on Arctic Fisheries (JRN-AFWG). Although this work has been conducted independently of ICES, the methodologies agreed at ICES benchmarks and agreed HCRs (Harvest Control Rules) have been followed in providing this advice.

In 2024 we are giving 2-year advice for both Greenland halibut and beaked redfish. The beaked redfish model is planned for a method revision prior to the next advice.

Advice on fishing opportunities for NEA cod

The NEA cod stock is continuing to decline following a period of moderate to poor recruitment. Following the agreed HCR, the advice for 2025 is that catches should be no more than 311 587 tonnes. This is down from 453 427 because the stock is projected to fall below Bpa, and therefore the stability constraint on interannual catch variation does not apply. Provided that this advice is followed, then projections indicate that at current recruitment levels the stock should stabilize and start to rise after 2027.

Advice on fishing opportunities for NEA haddock

Advice is that catches in 2025 should not exceed 106 912 tonnes, down from  127 550 tonnes, from the advice in 2023. A relatively good yearclass in 2021 should enter the fishery in 2026- Provided that this yearclass is not heavily caught at small sizes then then should lead to an increase in stock and catches thereafter. In recent years there has been a rise in the catch of small haddock, and if this is not curtailed then there is a risk that a large part of the incoming yearclass could be fished before reaching a size to give optimum yield.

Advice on fishing opportunities for Greenland halibut

The Greenland halibut stock is projected to fall below Bpa in the course of 2024, which has resulted in lowered advice. The advice is that catches in 2025 should be no more than 12 431 tonnes, and catches in 2016 should be no more than 14 891. This stock has a history of quota and catches being set above advice, which has led to the decline of the stock. There is good yearclass in 2019 which offers a prospect of an increase in stock and advice – provided the advice is followed and the stock is not further reduced.

Advice on fishing opportunities for beaked redfish

The stock is at a high level, with SSB rising slowly and total fishable biomass relatively stable. The catch advice is no more than 67 191 tonnes in 2025 and 69 177 tonnes in 2026, compared to an advice of 70 164 tonnes for 2024. There has been a high retrospective pattern for this stock assessment, and a method revision is planned before the next advice is due (for the 2027 fishing season).

Chapter 1. Ecosystem considerations

The aim of this chapter is to identify important ecosystem information influencing the fish stocks. Ecosystem and climate changes, along with fishery, determine the stock dynamics of commercial species. Water temperature and ice conditions influence on distribution of the commercial fishes in the Barents Sea. Apart from this, temperature impacts on growth rate and mortality at the early stages (larvae, juveniles). Currents affect the strength of year-classes by providing transport of eggs, larvae and 0-group of commercial species from the spawning areas into the Barents Sea. Food availability is another important ecosystem driver that influence on the rate of growth and maturation of commercial fishes. It depends not only on the prey availability, but also on feeding competition. Mortality due to predation, including cannibalism, can greatly affect population abundance of commercial species. The impact of ecosystem changes on the dynamics of bycatches of juveniles and non-target species in mixed fisheries should also be taken into account.

Specification of the ecosystem impact on the assessed species :

Cod

The cod stock has been decreasing, but predictions indicate that it will stabilize on a low level. The main effect of the ecosystem impact on cod stock dynamics is manifested in the change in the abundance of its recruitment. There have not been any strong year-classes of cod since 2005 despite high cod SSB and above average sea temperatures. Recruitment has previously been shown to be positively correlated with both those factors, but in recent years this is no longer the case. Meso-zooplankton is important for survival of larvae and 0-group cod, so their distribution must overlap with areas of relatively high plankton biomasses. Despite a large number of studies (see e.g. summary in Ottersen et al., 2014), the underlying mechanism of the impact of the Barents Sea ecosystem on cod recruitment is still not well understood.

Haddock

Warm conditions are necessary, but not sufficient conditions to ensure good recruitment and growth. Plankton bloom (timing and strength) and influx are important for recruitment and feeding conditions are important for growth and reproduction. In 2019-2020 feeding conditions of haddock in the Barents Sea were poor, which reduced its condition. Older haddock includes a high proportion of benthic invertebrates in their diet, the availability of this prey group is not known. Reduction of cod stock and intermediate to high abundance of capelin could lead to less predation on haddock by cod, and therefore lower mortality on both pre-recruits and younger haddock recruited into the fishery.

Greenland halibut

The distribution of the Greenland halibut stock is very uneven in the Barents Sea and adjacent waters and strongly depends on the migrations that it makes throughout its life. The highest densities of adult fish are observed in spawning grounds on the slope of the continental shelf. Juveniles are widely distributed along the northern part of the shelf and their abundance in the Barents Sea may be affected by water temperature and currents, although the effect of these factors is not fully understood and uncertain. Growth and maturation of the Greenland halibut depend on prey abundance. Greenland halibut feeds on zooplankton, capelin, herring, polar cod and other small fishes. Cod can be both predator and food competitor for Greenland halibut. Cannibalism can also be observed in areas with overlapping of adults and juveniles. Mammals can consume Greenland halibut in the spawning areas.

Beaked redfish

As a boreal species, it is benefiting from the warming in the Barents Sea. Its stock has increased in recent years, but its stock assessment is characterized by high uncertainty. Feeding condition for beaked redfish in 2022-2023 were likely to be relatively stable. Cod and Greenland halibut are main predators for the beaked redfish. However, as abundance of these species is declining and abundance of capelin, herring and polar cod is increased, the predation pressure on redfish probably is relatively low. In recent years, the mortality rate of young beaked redfish has been high due to bycatches in the shrimp fishery (ICES AFWG, 2023). This strongly depends on the overlap between the distribution areas of redfish juveniles and shrimp fishery areas. The stock size and distribution of shrimp as well as currents and temperature affect this.

Current situation :

In the last six years, the Barents Sea coverage during the ecosystem survey (BESS) was incomplete in 2020 and 2022, making the evaluation of the ecosystem status more uncertain. The 20-th BESS was carried out during the period from 10-th August 2023 to 7th October 2023 by three Norwegian and one Russian research vessels. The temporal and spatial progression during the survey was good (Figure 1a,b).

Cruise tracks

Distribution map
Figure 1. Cruise lines and sample sites (top), day of year of sampling (bottom)

 

 

 

Abiotic conditions

A warming was evident in most of the central Barents Sea in 2023, with temperatures well above the long-term mean (1981-2010). However, the northwestern and southwestern parts were colder than both the long-term mean and the year before (2022). Ice coverage of the Barents Sea in 2023 was below both the long-term mean and that of 2022. The area of the Barents Sea occupied by bottom waters with a temperature < 0°C amounted to 17% and was substantially lower compared to the level of the previous four years (Fig. 1). According to the expert evaluation, Atlantic water temperature in the Murman Current in 202 4 is expected to decline slightly but remain typical of warm years. Due to high temperatures and low sea-ice extent in recent years, the ice coverage of the Barents Sea is expected to remain below normal. Lower than average ice coverage and longer duration of ice-free season, increase primary productivity of the Barents Sea.

 

percentage data
Figure 1. Area of bottom waters with different temperature ranges in the Barents Sea in September-October 2000-2023.

 

Mesozooplankton

The results from the joint Norwegian-Russian Barents Sea ecosystem cruise in autumn 2023 show the typical pattern of comparatively high mesozooplankton biomasses in the southwestern and northerly regions, and in the deeper part of the southeastern area. Biomasses were much lower on the banks in central regions, and particularly low in the southeastern corner of the Barents Sea. Considering the overall mesozooplankton biomass in 2023, the levels in western areas influenced by inflowing Atlantic water were comparable to earlier years when considering year-to-year variability. This was also the case for the bank regions in the central Barents Sea, as well as in the easternmost subareas. However, when studying size-fractioned biomass which is available for the Norwegian sector of the Barents Sea, the mid-size biomass fraction stands out with conspicuously low levels during the last four years. This size-fraction typically represents older stages of relatively large copepods such as Calanus and Metridia . In contrast, the smallest biomass size-fraction which generally represents small species or young stages of copepods, has shown comparatively high levels in the last two years. The low level of the mid-size biomass fraction (primarily representing large copepods) in later years is worth noting when considering the feeding conditions for fish and other predators in the ecosystem.

Prey stocks

Euphausiids, amphipods and shrimp are important prey for most commercial fish in the Barents Sea. In 2023 the total biomass of euphausiids was slightly less than long term mean (2015-2021). In recent years, the northern shrimp stock has remained stable, showing fluctuations but without a clear trend.

Capelin, polar cod and young herring are the main forage pelagic fish in the Barents Sea, which are important prey for most predators in the area, including commercial demersal species. These species are very sensitive to various changes in the ecosystem, the influence of predators, fishing, or the plankton availability. Historically, their stocks change rapidly depending on year-classes strength. Capelin abundance is still around average level now and will likely have a negative trend in 2024-2025 due to lack of strong year classes in 2021-2022 and probably insufficient feeding conditions. The average length and weight of capelin remains very low most likely due to the low biomass of plankton in the feeding areas. The recent strong herring year classes may have a negative impact on capelin recruitment also. The 2022-2023 year- classes of herring were very abundant at 0-group stage and confirmed by other recent observations. This gives a probable increase in the herring stock in the next 4-5 years. Polar cod biomass very uncertain since in recent years the area of polar cod distribution was not covered well in the ecosystem surveys. The polar cod stock is likely increasing since the consumption of cod has been much lower in recent years. In 2023, abundant polar cod at age 0 were mainly found around the Svalbard (Spitsbergen) in 2023 and for the first time since the observations started in 1980, the record strong year class came from this area.

Fish diets

Cod is a main predator in the Barents Sea. Its diet was relatively stable in recent years; capelin was the main prey. The diet composition of cod in 2023 was similar to that in 2022 (Fig. 2). Since 2013 the importance of snow crab considerably increased in cod diet and consisted of 3-7 % by weight (Fig. 3). It should be noted that in 2022-2023 an unexpected increase of red king crab up to 3-5 % by weight in the diet was observed (Fig.3), but cod consume only crab legs, empty carapaces after molting or individuals with soft carapace immediately after molting. Fig. 4 shows the consumption by cod in the period 1984-2023. Consumption of most prey decreased from 2022 to 2023 due to decrease in cod abundance.

Fig. 5 and 6 show the proportion of cod and haddock in the diet of cod. Predation of cod on juvenile cod and haddock was relatively low in recent years, but the proportion of haddock in cod diet is increasing, which is consistent with the increased abundance of young haddock in recent years.

Individual growth of cod has increased somewhat in recent years, but now seems to have stabilized. Feeding conditions for cod are expected to be adequate in the near future, as the cod likely will be able to feed on other prey if the capelin stock decreases (see Gjøsæter et al. 2009 for a discussion of ecosystem effects of capelin collapses). Also, the cod stock is decreasing so there will be less competition for food.

The diet composition of haddock is presented in Fig. 7. Haddock is benthivorous species and feed mainly on polychaets, echinoderms and molluscs (on average up to 43 % by weight). However, euphausiids and fish (including capelin and herring) can be important prey items (on average up to 13 % and 17 % by weight respectively ).

Diet composition
Figure 2. Diet composition of cod in 1984-2023, % by weight (The state …, 2024).

 

 

Crab trends
Figure 3. Importance of snow crab and red king crab in diet of cod in 1984-2023, % by weight

 

 

cod consumption
Figure 4. Consumption of various prey items by cod in 1984-2023. Norwegian calculations.

 

 

Proportion cod in diet
Figure 5. Proportion of cod in cod diet by predator age group.

 

 

Proportion of haddock in cod diet
Figure 6. Proportion of haddock in cod diet by predator age group.

 

 

Diet composition
Figure 7. Diet composition of haddock in 1993-2023, % by weight (The state …, 2024).

 

Reference

Gjøsæter, H., Bogstad, B., and Tjelmeland, S. 2009. Ecosystem effects of three capelin stock collapses in the Barents Sea. In Haug, T., Røttingen, I., Gjøsæter, H., and Misund, O. A. (Guest Editors). 2009. Fifty Years of Norwegian-Russian Collaboration in Marine Research. Thematic issue No. 2, Marine Biology Research 5(1):40-53. Doi: 10.1080/17451000802454866

Ottersen, G., Bogstad, B., Yaragina, N. A., Stige, L. C., Vikebø, F., and Dalpadado, P. 2014. A review of early life history dynamics of Barents Sea cod (Gadus morhua). ICES Journal of Marine Science 71(8): 2064-2087.

The state of biological resources of the Barents, White and Kara Seas and the North Atlantic in 2023. / Murmansk, PINRO 2024, 170 p.

van der Meeren, G. and Prozorkevitch, D. (eds.) 2023. Survey report from the joint Norwegian/Russian Ecosystem Survey in the Barents Sea and the adjacent waters August- December 2022. IMR/PINRO-report series x/2023 (in prep)

Survey report (Part 1) from the joint Norwegian/Russian Ecosystem Survey in the Barents Sea and the adjacent waters August-October 2023 Report series: IMR-PINRO Year - No.: 2024-2 Date: 20.11.2023 DOI: 10.13140/RG.2.2.19519.07842

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Chapter 3. Northeast Arctic Cod (Subareas 1 and 2)

 

Status of the fisheries

Historical development of the fisheries (Table 3.1)

From a level of about 900 000 t in the mid-1970s, total catch declined steadily to around 300 000 t in 1983—1985 (Table 3.1). Catches increased to above 500 000 t in 1987 before dropping to 212 000 t in 1990, the lowest level recorded in the post-war period. The catches increased rapidly from 1991 onwards, stabilized around 750 000 t in 1994—1997 but decreased to about 414 000 t in 2000. From 2000—2009, the reported catches were between 400 000 and 520 000 t, in addition there were unreported catches (see below). Catches have been above the long-term average since 2011 and have decreased from a peak of 986 000 tonnes in 2014 to 693 000 tonnes in 2019-2020 before increasing to 767 000 tonnes in 2021 and decreasing again to 582 552 tonnes in 2023. The fishery is conducted both with an international trawler fleet and with coastal vessels using traditional fishing gears. Quotas were introduced in 1978 for the trawler fleets and in 1989 for the coastal fleets. In addition to quotas, the fishery is regulated by a minimum catch size, a minimum mesh size in trawls and Danish seines, a maximum bycatch of undersized fish, closure of areas having high densities of juveniles and by seasonal and area restrictions.

Reported catches prior to 2024 (Tables 3.1-3.4, Figure 3.1)

The provisional catch of cod in Subarea 1 and divisions 2.a and 2.b for 2023 reported to the working group is 630 662 t (including both NEA cod and NCC catches).

The historical practice (considering catches between 62°N and 67°N for the whole year and catches between 67°N and 69°N for the second half of the year to be Norwegian coastal cod) has been used for estimating the Norwegian landings of Northeast Arctic cod up to and including 2011 (Table 3.2). The catches of coastal cod subtracted from total cod catches in Subarea 1 and divisions 2.a and 2.b for the period 1960—2023 are given in Table 3.2. For 2012–2023 the Norwegian catches have been analysed by an ECA-version designed for simultaneously providing estimates of catch numbers-at-age for each of the two stocks.

Coastal cod catches in 2023 for the southern and northern area combined were 48 110 tonnes and this amount was as in previous years subtracted from the total cod catch north of 62° N to get the figure for NEA cod used in that assessment (Table 3.1 and 3.2).

The time series for coastal cod catches are now inconsistent with the coastal cod catches presented in ICES AFWG 2024 Chapter 2, as the coastal cod catch time series were revised at WKBarFar, but not the NEA cod time series. At WKBarFar, the proposal for revision of NEA cod catch data series was rejected, as Norwegian data for many years and age groups (especially ages 12+ in years prior to 2013) were changed considerably and the reason for this was not sufficiently explained. WKBarFar recommended that when the revision of the historical Norwegian catch data is ready it should be submitted to ICES for review, ideally by a review attached to the AFWG.

The catch by area is shown in Table 3.1, and further split into trawl and other gears in Table 3.3. The distribution of catches by gears in 2023 was similar to 2022, while the proportion of catches taken in area 2b decreased markedly. The nominal landings by country are given in Table 3.4.

There is information on cod discards (see ICES AFWG 2021 section 0.4) but it was not included in the assessment because these data are fragmented and different estimates are in contradiction with each other. Moreover the level of discards is relatively small in the recent period and inclusion of these estimates in the assessment should not change our perception on NEA cod stock size.

In summer/autumn 2018, a Norwegian vessel caught 441 t of cod in the Jan Mayen EEZ, which is a part of ICES area 2a, mostly by long-line. Cod is known to occasionally occur in this area, but rarely in densities which are suitable for commercial fisheries. The cod caught in this area in 2018 was large (65-110 cm), and otolith readings and genetics both showed this cod to be a mix of Northeast Arctic and Icelandic cod. Norway did in 2019-2020 carry out an experimental long-line fishery during four different periods in each year in order to investigate further the occurrence of cod in this area in space and time as well as stock identity. A description of this fishery as well as a historic overview of cod observations around Jan Mayen is given in Bogstad (2023).

Quotas, catches and advice for the period 2019-2024 for cod in the Jan Mayen area are given in Table 3.1a. These catches are not included in the catch statistics for Northeast Arctic cod.

Unreported catches of Northeast Arctic cod (Table 3.1)

In the years 2002—2008 certain quantities of unreported catches (IUU catches) have been added to the reported landings. More details on this issue are given in the Working group reports for that period.

There are no reliable data on level of IUU catches outside the periods 1990—1994 and 2002—2008, but it is believed that their level was not substantial enough to influence on historical stock assessment.

According to reports from the Norwegian-Russian analysis group on estimation of total catches the total catches of cod since 2009 were very close to officially reported landings.

TACs and advised catches for 2023 and 2024

The Joint Norwegian-Russian Fisheries Commission (JNRFC) agreed on a cod TAC of 566 784 t for 2023, and in addition 21 000 t Norwegian coastal cod. The total reported catch of 630 662 t in 2023 was 42 878 t above the agreed TAC. Since 2015 JNRFC has decided that Norway and Russia can transfer to next year or borrow from last year 10% of the cod country’s quota. That may lead to some deviation between agreed TAC and reported catch. As an extraordinary measure due to expected underfishing of the TAC in 2021, JNRFC decided that it should be possible to transfer 15% of the TAC between 2021 and 2022, but thereafter the maximum transfer was reset back to the agreed 10%.

The advice for 2024 given by JRN-AFWG in 2023 was 453 427 t based on the agreed harvest control rule. The quota established by JNRFC for 2024 was set equal to the advice. In addition, the TAC for Norwegian Coastal Cod was set to the same value for 2024 as for 2023: 21 000 t.

Status of research

Fishing effort and CPUE (Table A1, Figure 3.4-3.5)

CPUE series of the Norwegian and Russian trawl fisheries are given in Table A1. The data reflect the total trawl effort (Figure 3.4), both for Norway and Russia. The Norwegian series is given as a total for all areas. Norwegian data for 2011–2023 are not compatible with data for 2007 and previous years. Norwegian CPUE declined from 2020 to 2023 and reached the lowest level in the 2011-2023 time series (Figure 3.5). Note that double trawl is now the dominant gear in the Norwegian trawl fishery (Nedreaas and Otterå WD02), but trends are the same for single and double trawl. Russian CPUE in area 2a in 2022-2023 was the lowest since 1999 and in area 1 in 2023 it was the lowest since 2006, while in area 2b it increased somewhat from 2022 to 2023.

Survey results - abundance and size at age (Tables 3.5, A2-A14)

Joint Barents Sea winter survey (bottom trawl and acoustics) Acronyms: BS-NoRu-Q1 (BTr) and BS-NoRu-Q1 (Aco)

The survey was carried out as planned with relatively good spatial coverage, although bad weather and ice limited the coverage somewhat.

Before 2000 this survey was made without participation from Russian vessels, while in 2001—2005, 2008—2016 and 2018-2024 Russian vessels have covered important parts of the Russian zone. In 2006—2007 the survey was carried out only by Norwegian vessels. In 2007, 2016, and 2021-2024 the Norwegian vessels did not cover any part of the Russian EEZ. The methods for adjustment for incomplete area coverage are described in detail in Fall et al. (2024) and references therein. Table 3.5 shows areas covered in the time-series and the additional areas implied in the method used to adjust for missing coverage in the Russian Economic Zone.

Regarding the older part of this time-series it should be noted that the survey prior to 1993 covered a smaller area (Jakobsen et al . 1997), and the number of young cod (particularly 1- and 2-year old fish) was probably underestimated. Changes in the survey methodology through time are described in Appendix 2 in Fall et al. (2024). Note that the change from 35 to 22 mm mesh size in the codend in 1994 is not corrected for in the time-series. This mainly affects the age 1 indices.

It is likely that in recent years the coverage in the February survey (BS-NoRu-Q1 (BTr) and BS-NoRu-Q1 (Aco)) has been incomplete, in particular for the younger ages. This could cause a bias in the assessment, but the magnitude is unknown. The 2014–2024 surveys covered considerably larger areas than earlier winter surveys, and showed that most age groups of cod (particularly ages 1 and 2) were distributed far outside the standard survey area. The bottom trawl survey estimates including the extended area for 2014-2024 were used in the tuning data separately from the same index before 2014, as decided at WkBarFar 2021.

Lofoten acoustic survey on spawners Acronym: Lof-Aco-Q1

The estimated abundance indices from the Norwegian acoustic survey off Lofoten and Vesterålen (the main spawning area for this stock) in March/April are given in Table A4. A description of the survey, sampling effort and details of the estimation procedure can be found in Korsbrekke (1997). The 2024 survey results in biomass terms was 108 thousand tonnes, this is 16 % below the 2023 level and the lowest since 2001.

A pilot survey on spawning grounds north of the area covered by the Lofoten survey was carried out in 2023 (Korsbrekke 2024), at about the same time and in the same way as the Lofoten survey. The total abundance in that area was about 17% of that in the Lofoten area. The area covered by this pilot survey is mostly covered also by the winter survey, but with much larger distance between transects at that time.  Such a survey was not carried out in 2024.

Joint Ecosystem survey Acronym: Eco-NoRu-Q3 (Btr)

Swept area bottom trawl estimates from the joint Norwegian-Russian ecosystem survey in August-September for the period 2004–2023 are given in Table A14. This survey normally covers the entire distribution area of cod at that time of the year.

In 2014 this survey had an essential problem with area coverage in the north-west region because of difficult ice conditions. In the area covered by ice in 2014 a substantial part of population was distributed during 2013 survey. So, based on those observations AFWG decided in 2015 to exclude 2014 year from that tuning series in current assessment. In 2016 there was incomplete coverage in the international waters and close to the Murman coast. An adjustment for this incomplete coverage was made based on interpolation from adjacent areas (Kovalev et al 2017, WD 12). At this time of the year, usually a relatively small part of the cod stock is found in the area which was not covered in 2016. In 2017 and 2019 the coverage was close to complete, although the far northeastern part of the survey area (west of the north island of Novaya Zemlya) was not covered due to military restrictions. In 2018, a large area in the eastern part of the Barents Sea was not covered. Thus it was decided not to include 2018 data from this survey in the assessment.

The coverage in 2020 was less synoptic than usual, but it was decided to keep the results in the assessment. The 2021 and 2023 coverage was adequate.

In 2022 the coverage of the Russian EEZ was done much later than the coverage of the Norwegian EEZ, with the entire survey period being from 15 August to 3 December (van der Meeren and Prozorkevitch, 2023). Also some areas were not covered. Indices based on the combined data have been calculated (Table A14), but due to the poor synopticity and incomplete coverage it was decided not to use the index for that year in the assessment.

The survey indices are calculated both the BioFox and StoX calculation methods, and as in earlier years, the Biofox series was used in the tuning. A research recommendation from WkBarFar was to unify these two methods for estimating indices from ecosystem survey. However, the benchmark decided to use weight at age from the StoX in calculations of weight at age used in the assessment.

Russian autumn survey Acronym: RU-BTr-Q4

Abundance estimates from the Russian autumn survey (November-December) are given in Table A9 (acoustic estimates) and Table A10 (bottom trawl estimates). The entire bottom trawl time-series was in 2007 revised backwards to 1982 (Golovanov et al ., 2007, WD3), using the same method as in the revision presented in 2006, which went back to 1994. The new swept area indices reflect Northeast Arctic cod stock dynamics more precisely compared to the previous one - catch per hour trawling. The Russian autumn survey in 2006 was carried out with reduced area coverage. Divisions 2a and 2b were adequately investigated in the survey in contrast to Subarea 1, where the survey covered approximately 40% of the long-term average area coverage. The Subarea 1 survey indices were calculated based on actual covered area (40 541 sq. miles). The 2007 AFWG decided to use the “final" year class indices without any correction because of satisfactory internal correspondence between year class abundances at age 2—9 years according to the 2006 survey and ones due to the previous surveys.

This survey was not conducted in 2016, but was carried out in 2017, when 79% of the standard survey area was covered (Sokolov et al 2018, WD 11). The index shows a reliable internal consistence and it was decided to use it in the assessment. This survey was not carried out in 2018-2023 and is discontinued.

Survey results - length and weight-at-age (Tables A5-A8, A11-A12, A15, A16)

Length-at-age is shown in Table A5 for the Joint survey in the Barents Sea in winter, in Table A7 for the Lofoten survey and in Table A11 for the Russian survey in October-December. Weight-at-age is shown in Table A6 for the Norwegian survey in the Barents Sea in winter, in Table A8 for the Lofoten survey, Table A12 for the Russian survey in October-December and Table A15 for the BESS survey (calculated using StoX). Table A16 presents combined data on Weight-at-age from winter survey and Lofoten survey.

Length and weight at age in the Joint winter survey in the Barents Sea was fairly stable from 2023 to 2024, with some increase noted for ages 4 and 7. Weight at age in the Lofoten survey decreased for ages 6-9. The size at age in the BESS survey showed little change from 2022 to 2023.

Age reading

The joint Norwegian-Russian work on cod otolith reading has for many years included regular exchanges of otoliths and age readers (see ICES AFWG 2021 chapter 0.7). The results of fifteen years of annual comparative age readings are described in Yaragina  et al . (2009). Zuykova  et al . (2009) re-read old otoliths and found no significant difference in contemporary and historical age determination and subsequent length at age. However, age at first maturation in the historical material as determined by contemporary readers is somewhat younger (from -0.6 years for the 1940-1950s to -0.28-0 years for the 1970-1980s) than that determined by historical readers. Taking this difference into account would thus have effect on the spawning stock-recruitment relationship and thus on the biological reference points.

The overall percentage agreement for the 2017–2018 exchange was 87.7% (Zuykova et al. 2020). The main reason for cod ageing discrepancies between Russian and Norwegian specialists remains the same, representing the latest summer growth zone, and different interpretations of the false zones. The general trend is that the Russian readers assign slightly lower ages than the Norwegian readers compared to the modal age for age groups 7 years and older. This is opposite of what we have seen in previous readings, where the Russian readers has tended to be slightly overestimating the age compared to the Norwegian readers for younger fish (1-5 years), underestimating for older fish (>10 years) and reading without significant difference for ages 6-9 years.

The trend with bias in NEA cod age determination registered for some years of the period 1992–2018 between experts of both countries is a solid argument to continue comparative cod age reading between PINRO and IMR to monitor the situation. The German participant has expressed an intention to join the age reading cooperation in future.

  Cod otoliths from 2019-2023 have not yet been exchanged between the parties. A system for transferring otoliths between IMR and Polar Branch of VNIRO needs to be set up to resume regular calibration of age readings. Images of otoliths are intended to be temporarily used instead of a physical exchange of otoliths until a system for exchange is in place.

Data available for use in assessment

Data for the period 1946–1983 are taken from the AFWG 2001 report (ICES CM 2001/ACFM:19) and were not revised at the WKBarFar benchmark in 2021.

Catch-at-age (Table 3.6)

For 2023, age compositions from all areas were available from Norway, Russia, Spain and Germany.

There is a concern about the biological sampling from parts of both the Norwegian and Russian fishery that may be too low or missing. Also the split between NEA cod and coastal cod may be affected by the sampling coverage. Data from Norwegian Coast Guard vessels’ length measurements onboard Russian vessels in some quarters of 2023 were used for calculation of age composition of Russian catches in Division 1, 2a and 2b.

Survey indexes available for use in assessment (Table 3.13, A13)

The following survey data series were available:

Surveys used in assessment
Fleet code Name Place Season Age Years
Fleet 15* Joint bottom trawl survey Barents Sea Feb-Mar 3–12+ 1981–2013, 2014-2024
Fleet 16 Joint acoustic survey Barents Sea+Lofoten Feb-Mar 3–12+ 1985–2024
Fleet 18 Russian bottom trawl surv. Barents Sea Oct-Dec 3–12+ 1982–2017
Fleet 007 Ecosystem surv. Barents Sea Aug-Sep 3–12+ 2004–2023**

*Survey indices for Fleet 15 were divided by two series (before and after 2014) in model tuning as decided at WKBarFar 2021.

**2014, 2018 and 2022 data not used in the assessment

The tuning fleet file is shown in Table 3.13. Note that the joint acoustic survey (sum of Barents Sea and Lofoten acoustic survey indices) is given in Table A13.

Survey indices for Fleet 15 have been multiplied by a factor 100, while survey indices for Fleets 007, 16 and 18 have been multiplied by a factor 10. This is done to keep the dynamics of the surveys even for very low indices, because some models (e.g. XSA) adds 1.0 to the indices before the logarithm is taken.

Weight-at-age (Tables 3.7-3.9, A2, A4, A6, A8, A12, A16).

Catch weights

For 2023, weight-at-age in the catch for areas 1, 2a and 2b was provided by Norway, Russia, Spain and Germany (Table 3.7). For ages up to and including 11, observations are used. Following the WKBarFar 2021 decision, weight at age in catch for the years 1983-present for ages 12-15+ are calculated by a cohort-based von Bertalanffy approach used to replace previous fixed values.

Stock weights

For ages 1—11 stock weights-at-age at the start of year y (Wa,y ) for 1983—2024 are calculated combining, when available, weight at age from the Winter, Lofoten, Russian autumn and ecosystem surveys. The details are given in the Stock Annex. For ages 12-15+ a similar approach as for weight at age in the catch was used.

Natural mortality including cannibalism (Table 3.12, Table 3.17)

A natural mortality (M) of 0.2 + cannibalism was used. Cannibalism is assumed to only affect natural mortality of ages 3-6.

2023 data are available and 2022 data have been updated.

The method used for calculation of the prey consumption by cod described by Bogstad and Mehl (1997) is used to calculate the consumption of cod by cod for use in cod stock assessment. The consumption is calculated based on cod stomach content data taken from the joint PINRO-IMR stomach content database (methods described in Mehl and Yaragina 1992). On average about 9000 cod stomachs from the Barents Sea have been analysed annually in the period 1984—2023.

These data are used to calculate the per capita consumption of cod by cod for each half-year (by prey age groups 0—6 and predator age groups 1–11+). It was assumed that the mature part of the cod stock is found outside the Barents Sea for three months during the first half of the year. Thus, consumption by cod in the spawning period was omitted from the calculations.

An iterative procedure was applied to include the per capita consumption data in the SAM run. It is described in detail in Stock Annex.

For the cod assessment data from annual sampling of cod stomachs has been used for estimating cannibalism, since the 1995 assessment. The argument has been raised that the uncertainty in such calculations are so large that they introduce too much noise in the assessment. A rather comprehensive analysis of the usefulness of this was presented in Appendix 1 in the 2004 AFWG report. The conclusion was that it improves the assessment.

The data on cod cannibalism for the historical period (1946—1983) was included in assessment during the benchmark to make the time-series consistent (ICES 2015, WKARCT 2015). These estimates were based on hindcasted values of NEA cod natural mortality at ages 3—5 using PINRO data base on food composition from cod stomach for the historical period (Yaragina et al . 2018).

Maturity-at-age (Tables 3.10-3.11)

Historical (pre–1982) Norwegian and Russian time-series on maturity ogives were reconstructed by the 2001 AFWG meeting (ICES CM 2001/ACFM:19). The Norwegian maturity ogives were constructed using the Gulland method for individual cohorts, based on information on age at first spawning from otoliths. For the time period 1946—1958 only the Norwegian data were available. The Russian proportions mature-at-age, based on visual examinations of gonads, were available from 1959.

Since 1982 Russian and Norwegian survey data have been used (Table 3.10). For the years 1985—2024, Norwegian maturity-at-age ogives have been obtained by combining the Barents Sea winter survey and the Lofoten survey. Russian maturity ogives from the autumn survey as well as from commercial fishery for November-February are available from 1984 until present. The Norwegian maturity ogives tend to give a higher percent mature-at-age compared to the Russian ogives, which is consistent with the generally higher growth rates observed in cod sampled by the Norwegian surveys. The percent mature-at-age for the Russian and Norwegian surveys have been arithmetically averaged for all years, except 1982—1983 when only Norwegian observations were used and 1984 when only Russian observations were used.

Russian data for the autumn survey for 2018 and later years were not available as the survey was not conducted. In WD15, 2019, updated correction factors to allow for this when calculating the combined maturity-at-age in 2019 were calculated, based on historical differences between Norwegian and Russian data. These correction factors were then applied to the Norwegian data for 2020-2024.

The approach used for calculating maturity at age is the same as previously used and consistent with the approach used to estimate the weight-at-age in the stock, except that no data from the BESS survey are used. However, since survey data, both abundance indices and proportion mature, have been revised, the entire time series of ogives back to 1994 was revised at the benchmark. The proportions of mature cod for age 13–15 are set to 1 for the period 1984–present.

Maturity-at-age for cod has been variable the last years, particularly for ages 6–9. According to the combined data, maturity at age increased from 2023 to 2024 for age groups 6 and 9 and decreased for ages 7 and 8 (Table 3.11).

Assessment using SAM

SAM settings (Table 3.14)

The SAM model settings optimised by WKBarFar are shown in Table 3.14.

SAM diagnostics (Figure 3.2 a-e)

Residuals for the SAM run are shown in Figure 3.2a, while model retrospective plots of F, SSB and recruitment are shown in Figure 3.2b. Historical retrospective pattern for final SAM run are shown in Figure 3.2c. Figure 3.2d compares observed and modelled catches in tonnes and Figure 3.2e shows the catchability by survey and age group.

The retrospective pattern is generally good (Figure 3.2b), with absolute values of Mohn’s rho < 13% for SSB, R and F.

Results of assessment (Tables 3.15-3.18, Figure 3.1)

Summaries of landings, fishing mortality, stock biomass, spawning stock biomass and recruitment since 1946 are given in Table 3.18 and Figure 3.1.

The fishing mortalities and population numbers are given in Tables 3.15 and 3.16.

The estimated F5-10 in 2023 is 0.589, which is above Fpa and within the Fmsy range (Table 3.18). Fishing mortality has been increasing steadily in recent years, but now seems to have levelled off. The spawning stock biomass in 2024 is estimated to be 552 kt (Table 3.20), which is the lowest since 2002, and much lower than the peak in 2013 (2,211 kt). When comparing farther back in time, one should bear in mind that in the early part of the time-series (before the 1980s) the fraction at age of mature fish was considerably lower.

Total stock biomass in 2024 is estimated to 1,289 kt, which is somewhat below the long-term mean and well below the highest level observed after 1955 (3,695 kt in 2013).

It is noted that the exploitation pattern is still dome-shaped with a marked decrease in selectivity above age 12, although the dome-shape is not as strong as in assessments made before the 2021 benchmark.

M values (M = 0.2+cannibalism mortality) are given in Table 3.17. For ages 3—5 the M matrix in 1946—1983 also includes cannibalism mortality since the benchmark meeting in 2015 (WKARCT 2015).

Reference points and harvest control rules

The current reference points for Northeast Arctic cod were estimated by SGBRP (ICES CM 2003/ACFM:11) and adopted by ACFM at the May 2003 meeting.

At the 46th session of JNRFC a new version of the management rule was adopted (see section 3.5.3) . The TAC advice for 2025 is based on the agreed harvest control rule.

Biomass reference points

The values adopted by ACFM in 2003 are Blim = 220 000 t, Bpa = 460 000 t. (ICES CM 2003/ACFM:11).

Fishing mortality reference points

The values adopted by ACFM in 2003 are Flim = 0.74 and Fpa = 0.40 (ICES CM 2003/ACFM:11). The Fmsy for NEA cod was estimated by WKBarFar 2021 to be in the range 0.40 - 0.60.

Harvest control rule

The history of how the harvest control rule has developed is given in the 2017 AFWG report. JNRFC in 2015 asked ICES to explore the consequences of 10 different harvest control rules. This was done by WKNEAMP (ICES 2015, 2016). JNRFC in 2016 adopted one of the rules explored by WKNEAMP (Rule 6 in that report).

The current rule reads as follows:

The TAC is calculated as the average catch predicted for the coming 3 years using the target level of exploitation (Ftr ).

The target level of exploitation is calculated according to the spawning stock biomass (SSB) in the first year of the forecast as follows:

- if SSB < Bpa, then Ftr = SSB / Bpa × Fmsy ;

- if Bpa ≤ SSB ≤ 2×Bpa, then Ftr = Fmsy ;

- if 2×Bpa < SSB < 3×Bpa, then Ftr = Fmsy × (1 + 0.5 × (SSB - 2×Bpa) / Bpa );

- if SSB ≥ 3×Bpa, then Ftr = 1.5 × Fmsy ;

where Fmsy=0.40 and Bpa =460 000 tonnes.

If the spawning stock biomass in the present year, the previous year and each of the three years of prediction is above Bpa, the TAC should not be changed by more than +/- 20% compared with the previous year’s TAC. In this case, Ftr should however not be below 0.30.

Prediction

Prediction input (Tables 3.19a)

The input data to the short-term prediction with management option table (2024—2027) are given in Table 3.19a. For 2024 stock weights and maturity were calculated from surveys as described in Sections 3.3.2 and 3.3.4.

Catch weights in 2024 onwards and stock weights in 2025 and onwards for age 3–11 are predicted by the method described by Brander (2002), where the latest observation of weights by cohort are used together with average annual increments to predict the weight of the cohort the following year. The method is given by the equation

W(a+1,y+1)=W(a,y) + Incr(a), where Incr(a) is a “medium term” average of Incr(a,y)= W(a+1,y+1)-W(a,y)

This method was introduced in the cod prediction in the 2003 working group. Since the 2005 working group an average of the 3 most recent values of annual increments have been used for predicting stock weights. For catch weights the last 5-year period for averaging the increments is used (changed from 10-year period at the 2021 benchmark).

The maturity ogive for the years 2025—2027 was predicted by using the 2022-2024 average. The fishing pattern in 2024 and later years was set equal to the previous 3 years. The stock annex prescribes average over 5 years, but as there has been a clear shift in the fishing pattern in recent years towards exploiting younger fish, a 3-year average was considered to be more appropriate. A 3-year average was also used in last year’s assessment.

The stock number-at-age in 2024 was taken from the final SAM run (Table 3.16) for ages 4 and older. The recruitment at age 3 in the years 2024—2027 was estimated as described in section 3.7.2. Figure 3.3 shows the development in natural mortality due to cannibalism for cod (prey) age groups 1-3 together with the abundance of capelin in the period 1984—2023. There was no clear trend in natural mortality, but the average M values for the last 3 years are used to predict natural mortality of age groups 3—6 for years 2024—2027 (based on benchmark decision, WKARCT 2015 and unchanged at WKBaRFar 2021).

The assessment shows an increasing F from 2012 to 2023. In accordance with the benchmark decision (WKARCT 2015, not reviewed at WKBarFar 2021) and with support from AFWG-2019 WD 11 (Kovalev and Chetyrkin, 2019), the last year’s assessment F in terminal year 2023 (status quo) is used for F in the intermediate year (2024). Table 3.19 shows input data to the predictions. The results of prediction show that the catch in 2024 predicted using Fsq is close to the agreed TAC.

Recruitment prediction (Table 3.19b-c)

At the 2008 AFWG meeting it was decided to use a hybrid model, which is a weighted arithmetic mean of different recruitment models. This model has not performed well in recent years (as shown e.g. in Fig. 3.2c for the prediction of age 3 abundance in the assessment (intermediate) year. Also, the 2023 JRN-AFWG concluded a review of recruitment models was needed. Additionally, some of the oceanographic time series used in the hybrid model are no longer updated. Thus, a thorough analysis of existing recruitment models and five proposed new models, as well as using recent averages of recruitment values was carried out (Kovalev and Chetyrkin, WD6).

First, an analysis was carried out based on the results of the 2023 assessment, and models were evaluated based on how well they performed over the period 2010-2022. For the models which performed best, the analysis was repeated based on the 2024 assessment and their performance for the period 2014-2023. The input data for the RCT3 model, which is one of those considered in this final analysis, is given in Table 3.19b and the results in Table 3.19c. A summary of the results of the models considered for use in the prediction is given in Table 3.19d. Based on the model performance, the RCT3 model was chosen for predicting 1-3 years ahead (i. e. the recruitment at age 3 in 2024, 2025 and 2026), and an average of the recent 4 years was chosen to predict 4 years ahead (i.e. the recruitment at age 3 for 2027 being calculated as the 2021-2024 average). This gave recruitment values of 587 million for 2024, 450 million for 2025, 375 million for 2026 and 340 million for 2027. For the age 3 recruitment in 2024, the results of running RCT3 with/without the ecosystem survey and SAM were all very similar.

It is suggested to rerun an analysis of various recruitment models each year.

Issues to be considered for the future:

Including the ecosystem survey in the RCT3 analysis.

Evaluate the performance of the SAM model for the 1-year-ahead prediction. The Mohn’s rho for SAM is currently quite good (12% for the last 5 years), but the retrospective performance of SAM has not been compared to the models proposed in WD6.

Prediction results (Tables 3.20-3.21)

The catch corresponding to Fsq in 2024 is 477 185 tonnes (Table 3.20), which is close to the agreed TAC of 453 427 tonnes. The resulting SSB in 2025 is 451 kt, which is 18 % lower than the SSB in 2024. Table 3.20 shows the short-term consequences over a range of F-values in 2025. The detailed outputs corresponding to Fsq in 2024 and the F corresponding to the HCR and Fpa in 2025 is given in Table 3.21. Summarised results are shown in the text table below.

Since SSB in 2025 is below Bpa =460 000 t, F = 0.40*SSB(2025)/Bpa =0.3918 is used in the 3-year prediction, giving catches of 287 330, 309 101 and 338 329 tonnes in 2025, 2026 and 2027, respectively. The average of this is 311 587 tonnes. As SSB is below Bpa in 2025, the 20% limit on annual change in TAC does not apply.

 

Cod in ICES subareas 1 and 2. Annual catch options. All weights are in tonnes.
Basis Total catch (2025) F (2025) SSB(2026) % SSB change * % TAC change ** % Advice change ***
Management plan^ 311 587 0.43 410 740 -9 -31 -31
Other options            
F MSY **** 292 245 0.40 425 617 -6 -36 -36
F = 0 0 0 664 770 48 -100 -100
F = F 2023 395 821 0.589 347 651 -23 -13 -13
F pa 292 245 0.40 425 617 -6 -36 -36
F lim 466 835 0.74 296 859 -34 3 3

* SSB 2026 relative to SSB 2025.

** Advice for 2025 relative to TAC for 2024 (453 427 tonnes).

*** Advice for 2025 relative to advice for 2024.

**** F = 0.40 corresponds to the lower bound of the F MSY range (0.40-0.60), F not reduced for SSB being below B pa .

^ Since SSB in 2025 is below B pa =460 000 t, F = 0.40*SSB(2025)/B pa =0.3918 is used in the 3-year prediction, giving catches of 287 330, 309 101 and 338 329 tonnes in 2025, 2026 and 2027, respectively. The average of this is 311 587 tonnes. As SSB is below B pa in 2025, the 20% limit on annual change in TAC does not apply.

The advice for 2025 is 31% lower than the advice for 2024. The downward adjustment of stock size since last year’s assessment and the declining stock trend both contribute to the reduction in advice. In addition, the 20% TAC change constraint was applied in the advice for 2024, resulting in higher advice than that resulting from the Ftarget. The stability constraint does not apply for 2025 because SSB has dropped below Bpa, and therefore advice for 2025 corresponds to Ftarget , and is considerably lower than the advice for 2024.

This catch forecast covers all catches. It is then implied that all types of catches are to be counted against this TAC. It also means that if any overfishing is expected to take place, the above calculated TAC should be reduced by the expected amount of overfishing.

Medium-term predictions (Figure 3.8)

The inputs for medium-term prediction are the same as for short-term ones. For years after terminal year in short-term prediction the same value as for this year are used for all parameters except target fishing mortality which is according to the HCR.

The stock size has been decreasing in recent years due to low incoming recruitment, downward adjustment of the stock size (due to model modifications at the benchmark in 2021) and increasing fishing mortality. The increase in fishing mortality is partly due to the 20% limit on annual reduction of TAC. Recruitment in coming years (2022-2025 year classes) is also estimated to be below average. The reason for low recent recruitment is not known. Previous periods of low recruitment have mainly occurred when temperature is below average, which is not the case at present.

The predictions for 2025 and following years indicate that catches and total stock biomass will increase slightly after 2025 while SSB will reach its lowest level in 2027 and then increase slightly. (Figure 3.8).

Comparison to 2023 assessment

The text table below compare this year’s estimates with the 2023 JRN-AFWG estimates for numbers at age (millions), total biomass, spawning biomass (thousand tonnes) in 2023, as well as reference F for the year 2022.

Number at age
Number at age

In the current assessment, the number of age 7, 8 and 10 in 2023 was adjusted upwards compared to the 2023 JRN-AFWG assessment, while the other age groups was adjusted downwards. The largest downwards adjustments were seen for age 3 (recruitment) and ages 12 and older.

Comparison to prediction

The change in the advice is large compared to last year. The advice for 2025 is 311 587 tonnes, while the advice for 2024 given by JRN-AFWG was 453 427 tonnes. The 2024 assessment adjusted the stock size in recent years slightly downwards. The main tendency for stock decrease in recent years was similar to last year’s assessment.

Concerns with the assessment and management advice

The WG realizes that imprecise input data, in particular the catch-at-age matrix, and discontinuation of some surveys as well as incomplete spatial coverage and reduced synopticity in surveys could be a main obstacle to producing precise stock assessments, regardless of which model is used.

In recent years stock size has been overestimated (particularly before the 2021 benchmark) and the stock is declining due to recruitment being below average. In this situation, the 20% limit on annual TAC change has led to fishing pressure well above the target in the HCR for several years, and this may pose a danger to the stock. The SSB has now fallen below Bpa , and to continue to apply the stability constraint would no longer be precautionary. The allowed 10% quota transfer between years compounds this issue in such a situation and this allowance should be reduced at low stock sizes.

Additional assessment methods

All models use the same tuning data.

TISVPA (Tables 3.22-3.24, Figure 3.6a-c)

This year the TISVPA model was applied to NEA cod with the same settings as last year and using the same data as SAM except that natural mortality values from cannibalism were taken from the SAM runs. During WG the results of exploratory runs using the TISVPA model (Tables 3.22-3.24) were discussed. The residuals of the model approximation of catch-at-age and “fleets” data are presented in Figure 3.6a. Likelihood profiles for different data source are presented in Figure 3.6b. Retrospective run results are shown in Figure 3.6c.

Model comparisons (Figures 3.2a, 3.6c, 3.7)

Figure 3.7 compares the results of SAM and TISVPA, showing F, SSB, TSB and recruitment. Trends are similar in all models, but TISVPA gives higher F in 2023 and lower biomass in 2024 than SAM. However, recruitment in 2023 is higher in TISVPA than in SAM. Both models show a reasonable retrospective pattern (Figures 3.2a, 3.6c).

New and revised data sources

This section describes some data sources, which could be revised or included in the assessment in the future.

Consistency between NEA cod and coastal cod catch data (Table 3.2)

Consistency between the catch data used for NEA cod and coastal cod should be ensured. The revised catch figures used in the coastal cod assessment do not correspond to the difference between the total cod catch and the catch used in the NEA cod assessment (Table 3.2). These discrepancies will be adjusted when the NEA cod catch series are revised (section 3.2.2).

Discard and bycatch data

Work on updating discard and bycatch data series is ongoing. Revised bycatch estimates in numbers for the period 2005-2023 are shown in ICES AFWG-2024 Fig. 0.1. At WKARCT in 2015 it was, however, decided not to include those data in the catch-at-age matrix.

The bycatch mainly consists of age 1 and 2 fish, but the bycatch is generally small compared to other reported sources of mortality: catches, discards and the number of cod eaten by cod. From 1992 onwards, bycatches of age 3 and older fish are negligible, because use of sorting grids was made mandatory. However, in 1985, bycatches of age 5 and 6 cod were about one third of the reported catches for those age groups. The year class for which the bycatches were highest, was the 1983 year class (total bycatch of age 2 and older fish of about 60 million, compared to a stock estimate of about 1300 million at age 3.

References

Bogstad, B. 2023. Jan Mayen—a new spawning and fishing area for Atlantic cod Gadus morhua . Polar Biology 46: 103-109. https://doi.org/10.1007/s00300-022-03102-8

Bogstad, B. and Mehl, S. 1997. Interactions Between Cod ( Gadus morhua ) and Its Prey Species in the Barents Sea. Forage Fishes in Marine Ecosystems. Proceedings of the International Symposium on the Role of Forage Fishes in Marine Ecosystems. Alaska Sea Grant College Program Report No. 97-01: 591-615. University of Alaska Fairbanks.

Brander, K. 2002. Predicting weight at age. Internal ICES note to assessment working groups. 2003. Software implementation of process models. Working Document No. 2 to the Arctic Fisheries Working Group, San Sebastian, Spain, 23 April- 2 May 2003.

Fall, J., Wenneck, T. de Lange, Bogstad, B., Eidset, E., Fuglebakk, E., Godiksen, J. A., Høines, Å., Johannesen, E., Midtun, H. Aa., Moksness, I., Skage, M. L., Staby, A., Tranang, C. Aa., Windsland, K., Russkikh, A. A., and Kharlin, S. 2024. Fish investigations in the Barents Sea winter 2023. IMR-PINRO Joint Report Series 1-2024, 144 pp.

Golovanov S.E., Sokolov A.M., and Yaragina, N.A. 2007. Revised indices of the Northeast Arctic cod abundance according to the 1982-2006 data from Russian trawl-acoustic survey (TAS). Working Document #3 for AFWG 2007.

ICES 2001. Report of the Arctic Fisheries Working Group. Bergen, Norway, 24 April – 3 May 2001. ICES CM 2001/ACFM:19. 380 pp.

ICES 2003. Study Group on Biological Reference Points for Northeast Arctic Cod. Svanhovd, Norway 13-17 January 2003. ICES CM 2003/ACFM:11.

ICES. 2015. Report of the Benchmark Workshop on Arctic Stocks (WKARCT), 26-30 January 2015, ICES Headquarters, Denmark. ICES CM 2015\ACOM:31. 126 pp.

ICES 2015. Report of the first Workshop on Management Plan Evaluation on Northeast Arctic cod and haddock and Barents Sea capelin ( WKNEAMP-1) , Dates , . ICES CM 2015/ACOM:60, 27 pp.

ICES 2016. Report of the second Workshop on Management Plan Evaluation on Northeast Arctic cod and haddock and Barents Sea capelin (WKNEAMP-2) , 25-28 January 2016, Kirkenes, Norway. ICES CM 2016/ACOM:47, 76 pp.

ICES. 2021. Benchmark Workshop for Barents Sea and Faroese Stocks (WKBARFAR 2021). ICES Scientific Reports. 3:21. 205 pp. https://doi.org/10.17895/ices.pub.7920

ICES. 2021. Arctic Fisheries Working Group (AFWG). ICES Scientific Reports 3:58. 817 pp. https://doi.org/10.17895/ices.pub.8196

ICES. 2024. Arctic Fisheries Working Group (AFWG). ICES Scientific Reports. 6:xx, xx pp.

Jakobsen, T., Korsbrekke, K., Mehl, S., and Nakken, O. 1997. Norwegian combined acoustic and bottom trawl surveys for demersal fish in the Barents Sea during winter. ICES CM 1997/Y:17.

Korsbrekke, K. 1997. Norwegian acoustic survey of Northeast Arctic cod on the spawning grounds off Lofoten. ICES C.M 1997/Y:18.

Korsbrekke, K. 2024. Acoustic survey targeting spawning NEA cod north of Vesterålsbankene 2023 (In Norwegian). https://www.hi.no/hi/nettrapporter/toktrapport-2024-1.

Kovalev, Y., Prozorkevich, D., and Chetyrkin, A. 2017. Estimation of Ecosystem survey 2016 index in situation of not full area coverage. Working Document No. 12 to the Arctic Fisheries Working Group, Copenhagen, 18-25 April 2017.

Kovalev, Y., and Chetyrkin, A. 2019. What does NEA cod want for prediction - Fsq or TAC constrain? Working Document No. 11 to the Arctic Fisheries Working Group. ICES. 2019. Arctic Fisheries Working Group (AFWG). ICES Scientific Reports. 1:30. 934 pp.

Kovalev, Y., and Chetyrkin, A. 2024. Analysis of the NEA Cod recruitment prediction quality. WD6, AFWG 2024.

Mehl, S., and Yaragina, N. A. 1992. Methods and results in the joint PINRO-IMR stomach sampling program. In: Bogstad, B. and Tjelmeland, S. (eds.), Interrelations between fish populations in the Barents Sea. Proceedings of the fifth PINRO-IMR Symposium. Murmansk, 12–16 August 1991. Institute of Marine Research, Bergen, Norway, 5–15.

Nedreaas, K. H. and Otterå, H. 2024. Effort and catch-per-unit-effort (CPUE) for Norwegian trawlers fishing cod north of 67˚N in 2011-2023. WD 02, 2024.

Sokolov A., Russkikh A., Kharlin S., Kovalev Yu. A., and Yaragina N.A. 2018. Results of the Russian trawl-acoustic survey on cod and haddock in the Barents Sea and adjacent waters in October-December 2017. Working Document no. 11. ICES Arctic Fisheries Working Group, ICES CM 2018/ACOM:06.

Thygesen, U. H., Albertsen, C. M., Berg, C. W., Kristensen, K., and Nielsen, A. 2017. Validation of ecological state space models using the Laplace approximation Environmental and Ecological Statistics 24 (2): 317-339.

van der Meeren, G. and Prozorkevitch, D. (eds.) 2023. Survey report from the joint Norwegian/Russian Ecosystem Survey in the Barents Sea and the adjacent waters August- December 2022. IMR/PINRO-report series 10/2023.

WD 15. 2019. Updated mean ratios between the combined and Norwegian data on weight at age and maturity at age in Northeast Arctic cod. Working document no 15, AFWG 2019.

Yaragina N.A. Nedreaas K.H., Koloskova V., Mjanger H., Senneset H., Zuykova N. and Ǻgotnes P. 2009. Fifteen years of annual Norwegian-Russian cod comparative age readings. Marine Biology Research 5(1): 54-65.

Yaragina N. A., Kovalev Yu. A., and Chetyrkin A. 2018. Extrapolating predation mortalities back in time: an example from North-east Arctic cod cannibalism, Marine Biology Research: https://doi.org/10.1080/17451000.2017.1396342

Zuykova N.V., Koloskova V.P., Mjanger H., Nedreaas K.H., Senneset H., Yaragina N.A., Ågotnes P., and Aanes S. 2009. Age determination of Northeast Arctic cod otoliths through 50 years of history. Marine Biology Research 5(1): 66-74.

Zuykova N.V., et al. 2020. Report on the meeting between Norwegian and Russian age reading specialists at Polar Branch of FSBSI “VNIRO” Murmansk, 20-24 May 2019. Working document no 8 in: ICES. 2020c.Arctic Fisheries Working Group (AFWG). ICES Scientific Reports. 2:52. 577 pp. http://doi.org/10.17895/ices.pub.6050 .

Year Subarea 1 Division 2.a Division 2.b Unreported catches Total catch
1961 409 694 153 019 220 508   783 221
1962 548 621 139 848 220 797   909 266
1963 547 469 117 100 111 768   776 337
1964 206 883 104 698 126 114   437 695
1965 241 489 100 011 103 430   444 983
1966 292 253 134 805 56 653   483 711
1967 322 798 128 747 121 060   572 605
1968 642 452 162 472 269 254   1 074 084
1969 679 373 255 599 262 254   1 197 226
1970 603 855 243 835 85 556   933 246
1971 312 505 319 623 56 920   689 048
1972 197 015 335 257 32 982   565 254
1973 492 716 211 762 88 207   792 685
1974 723 489 124 214 254 730   1 102 433
1975 561 701 120 276 147 400   829 377
1976 526 685 237 245 103 533   867 463
1977 538 231 257 073 109 997   905 301
1978 418 265 263 157 17 293   698 715
1979 195 166 235 449 9 923   440 538
1980 168 671 199 313 12 450   380 434
1981 137 033 245 167 16 837   399 037
1982 96 576 236 125 31 029   363 730
1983 64 803 200 279 24 910   289 992
1984 54 317 197 573 25 761   277 651
1985 112 605 173 559 21 756   307 920
1986 157 631 202 688 69 794   430 113
1987 146 106 245 387 131 578   523 071
1988 166 649 209 930 58 360   434 939
1989 164 512 149 360 18 609   332 481
1990 62 272 99 465 25 263 25 000 212 000
1991 70 970 156 966 41 222 50 000 319 158
1992 124 219 172 532 86 483 130 000 513 234
1993 195 771 269 383 66 457 50 000 581 611
1994 353 425 306 417 86 244 25 000 771 086
1995 251 448 317 585 170 966   739 999
1996 278 364 297 237 156 627   732 228
1997 273 376 326 689 162 338   762 403
1998 250 815 257 398 84 411   592 624
1999 159 021 216 898 108 991   484 910
2000 137 197 204 167 73 506   414 870
2001 142 628 185 890 97 953   426 471
2002 184 789 189 013 71 242 90 000 535 045
2003 163 109 222 052 51 829 115 000 551 990
2004 177 888 219 261 92 296 117 000 606 445
2005 159 573 194 644 121 059 166 000 641 276
2006 159 851 204 603 104 743 67 100 537 642
2007 152 522 195 383 97 891 41 087 486 883
2008 144 905 203 244 101 022 15 000 464 171
2009 161 602 207 205 154 623   523 431
2010 183 988 271 337 154 657   609 983
2011 198 333 328 598 192 898   719 829
2012 247 938 331087 148 638   727 663
2013 360 673 421678 183 858   966 209
2014 320 347 468 934 197 168   986 449
2015 272405 375328 216651   864384
2016 321347 351468 176607   849422
2017 309902 360477 197898   868276
2018 249397 321548 207681   778627
2019 234985 318539 139084   692609
2020 234029 298707 160166   692903
2021 281198 268942 217144   767284
2022 236173 256394 226644   719211
2023 1 260853 202358 119341   582552
Table 3.1. Northeast Arctic COD. Total catch (t) by fishing areas and unreported catch.

Data provided by Working Group members

1 Provisional figure

Year Advice   TAC CATCH
2018 -   - 441
2019 -   800 628
2020 -   800 522
2021 600   600 146
2022 347   347 276
2023 315   315 181
2024 0   0  
Table 3.1a Advice, quota and official Norwegian catches (tonnes) in the fishery zone around Jan Mayen (part of ICES area 2a).
Year Norwegian catches of cod removed from the NEAC cod -assessment
v1960–70 38.6
1971–79 no data
1980 40
1981 49
1982 42
1983 38
1984 33
1985 28
1986 26
1987 31
1988 22
1989 17
1990 24
1991 25
1992 35
1993 44
1994 48
1995 39
1996 32
1997 36
1998 29
1999 23
2000 19
2001 14
2002 20
2003 19
2004 14
2005 13
2006 15
2007 13
2008 13
2009 15
2010 13.5
2011 18.8
2012 35.5
2013 30.1
2014 33.6
2015 35.8
2016 54.9
2017 51.0
2018 36.3
2019 40.1
2020 45.3
2021 42.0
2022 40.3
2023 48.1
Table 3.2. Catches of Norwegian Coastal Cod in subareas 1 and 2, 1000 tonnes, which are removed from the NEA cod assessment.
    Subarea 1   Division 2.a   Division 2.b  
Year   Trawl Others Trawl Others Trawl Others
1967   238 84.8 38.7 90 121.1 -
1968   588.1 54.4 44.2 118.3 269.2 -
1969   633.5 45.9 119.7 135.9 262.3 -
1970   524.5 79.4 90.5 153.3 85.6 -
1971   253.1 59.4 74.5 245.1 56.9 -
1972   158.1 38.9 49.9 285.4 33 -
1973   459 33.7 39.4 172.4 88.2 -
1974   677 46.5 41 83.2 254.7 -
1975   526.3 35.4 33.7 86.6 147.4 -
1976   466.5 60.2 112.3 124.9 103.5 -
1977   471.5 66.7 100.9 156.2 110 -
1978   360.4 57.9 117 146.2 17.3 -
1979   161.5 33.7 114.9 120.5 8.1 -
1980   133.3 35.4 83.7 115.6 12.5 -
1981   91.5 45.1 77.2 167.9 17.2 -
1982   44.8 51.8 65.1 171 21 -
1983   36.6 28.2 56.6 143.7 24.9 -
1984   24.5 29.8 46.9 150.7 25.6 -
1985   72.4 40.2 60.7 112.8 21.5 -
1986   109.5 48.1 116.3 86.4 69.8 -
1987   126.3 19.8 167.9 77.5 129.9 1.7
1988   149.1 17.6 122 88 58.2 0.2
1989   144.4 19.5 68.9 81.2 19.1 0.1
1990   51.4 10.9 47.4 52.1 24.5 0.8
1991   58.9 12.1 73 84 40 1.2
1992   103.7 20.5 79.7 92.8 85.6 0.9
1993   165.1 30.7 155.5 113.9 66.3 0.2
1994   312.1 41.3 165.8 140.6 84.3 1.9
1995   218.1 33.3 174.3 143.3 160.3 10.7
1996   248.9 32.7 137.1 159 147.7 6.8
1997   235.6 37.7 150.5 176.2 154.7 7.6
1998   219.8 31 127 130.4 82.7 1.7
1999   133.3 25.7 101.9 115 107.2 1.8
2000   111.7 25.5 105.4 98.8 72.2 1.3
2001   119.1 23.5 83.1 102.8 95.4 2.5
2002   147.4 37.4 83.4 105.6 69.9 1.3
2003   146 17.1 107.8 114.2 50.1 1.8
2004   154.4 23.5 100.3 118.9 88.8 3.5
2005   132.4 27.2 87 107.7 115.4 5.6
2006   141.8 18.1 91.2 113.4 100.1 4.6
2007   129.6 22.9 84.8 110.6 91.6 6.3
2008   123.8 21.1 94.8 108.4 95.3 5.7
2009   130.1 31.5 102 105.2 142.1 11.4
2010   151.1 32.9 130 141.4 149.2 5.4
2011   158.1 38.4 163.5 167 181 11.9
2012   212.1 35.9 172.7 158.4 133.8 14.9
2013   308.5 52.2 216.9 204.7 159.7 24.1
2014   268.8 51.5 246.8 222.1 177.9 19.3
2015   224.3 48.1 192.2 183.2 197.7 19.0
2016   285.5 35.8 181.7 169.8 156.3 20.3
2017   265.4 44.5 189.5 171.0 180.0 17.9
2018   204.7 44.7 156.7 164.9 192.0 15.6
2019   199.4 35.6 177.8 140.7 128.9 10.1
2020   199.4 34.6 157.2 141.5 153.5 6.7
2021   220.8 60.4 120.2 148.7 202.1 15.1
2022   192.9 43.3 108.9 147.4 212.9 13.7
2023 1 218.5 42.4 90.9 111.5 112.6 6.8
Table 3.3. Northeast Arctic COD. Total nominal catch ('000 t) by trawl and other gear for each

Data provided by Working Group members

1 Provisional figures

Year Faroe Islands France German Dem.Rep. Fed.Rep.Germany Greenland Iceland Norway Poland United Kingdom Russia** Spain Others Total
1961 3934 13755 3921 8129     268377 -   158113 325780   1212 783221
1962 3109 20482 1532 6503     225615 -   175020 476760   245 909266
1963 - 18318 129 4223     205056 108   129779 417964   - 775577
1964 - 8634 297 3202     149878 -   94549 180550   585 437695
1965 - 526 91 3670     197085 -   89962 152780   816 444930
1966 - 2967 228 4284     203792 -   103012 169300   121 483704
1967 - 664 45 3632     218910 -   87008 262340   6 572605
1968 - - 225 1073     255611 -   140387 676758   - 1074084
1969 29374 - 5907 5543     305241 7856   231066 612215   133 1197226
1970 26265 44245 12413 9451     377606 5153   181481 276632   - 933246
1971 5877 34772 4998 9726     407044 1512   80102 144802   215 689048
1972 1393 8915 1300 3405     394181 892   58382 96653   166 565287
1973 1916 17028 4684 16751     285184 843   78808 387196   276 792686
1974 5717 46028 4860 78507     287276 9898   90894 540801   38453 1102434
1975 11309 28734 9981 30037     277099 7435   101843 343580   19368 829377
1976 11511 20941 8946 24369     344502 6986   89061 343057   18090 867463
1977 9167 15414 3463 12763     388982 1084   86781 369876   17771 905301
1978 9092 9394 3029 5434     363088 566   35449 267138   5525 698715
1979 6320 3046 547 2513     294821 15   17991 105846   9439 440538
1980 9981 1705 233 1921     232242 3   10366 115194   8789 380434
1981 12825 3106 298 2228     277818     5262 83000 14500 - 399037
1982 11998 761 302 1717     287525     6601 40311 14515 - 363730
1983 11106 126 473 1243     234000     5840 22975 14229 - 289992
1984 10674 11 686 1010     230743     3663 22256 8608 - 277651
1985 13418 23 1019 4395     211065     3335 62489 7846 4330 307920
1986 18667 591 1543 10092     232096     7581 150541 5497 3505 430113
1987 15036 1 986 7035     268004     10957 202314 16223 2515 523071
1988 15329 2551 605 2803     223412     8107 169365 10905 1862 434939
1989 15625 3231 326 3291     158684     7056 134593 7802 1273 332481
1990 9584 592 169 1437     88737     3412 74609 7950 510 187000
1991 8981 975   2613     126226     3981 119427*** 3677 3278 269158
1992 11663 2   3911 3337   168460     6120 182315 6217 1209 383234
1993 17435 3572   5887 5389 9374 221051     11336 244860 8800 3907 531611
1994 22826 1962   8283 6882 36737 318395     15579 291925 14929 28568 746086
1995 22262 4912   7428 7462 34214 319987     16329 296158 15505 15742 739999
1996 17758 5352   8326 6529 23005 319158     16061 305317 15871 14851 732228
1997 20076 5353   6680 6426 4200 357825     18066 313344 17130 13303 762403
1998 14290 1197   3841 6388 1423 284647     14294 244115 14212 8217 592624
1999 13700 2137   3019 4093 1985 223390     11315 210379 8994 5898 484910
2000 13350 2621   3513 5787 7562 192860     9165 166202 8695 5115 414870
2001 12500 2681   4524 5727 5917 188431     8698 183572 9196 5225 426471
2002 15693 2934   4517 6419 5975 202559     8977 184072 8414 5484 445045
2003 19427 2921   4732 7026 5963 191977     8711 182160 7924 6149 436990
2004 19226 3621   6187 8196 7201 212117     14004 201525 11285 6082 489445
2005 16273 3491   5848 8135 5874 207825     10744 200077 9349 7660 475276
2006 16327 4376   3837 8164 5972 201987     10594 203782 9219 6271 470527
2007 14788 3190   4619 5951 7316 199809     9298 186229 9496 5101 445796
2008 15812 3149   4955 5617 7535 196598     8287 190225 9658 7336 449171
2009 16905 3908   8585 4977 7380 224298     8632 229291 12013 7442 523431
2010 15977 4499   8442 6584 11299 264701     9091 267547 12657 9185 609983
2011 13429 1173   4621 7155 12734 331535     8210 310326 13291 17354^ 719829
2012 17523 2841   8500 8520 9536 315739     11166 329943 12814 11081 727663
2013 13833 7858   8010 7885 14734 438734     12536 432314 15042 15263 966209
2014 33298 8149   6225 10864 18205 431846     14762 433479 16378 13243 986449
2015 26568 7480   6427 7055 16120 377983     11778 381778 19905 9880 864384
2016 24084 7946   6336 8607 16031 348949     13583 394107 14640 15139 849422
2017 28637 9554   5977 13638 11925 357419     16731 396180 14414 13802 868276
2018 26152 6605   9768 12743 10708 333539     11533 340364 13143 14071 778627
2019 22270 6371   8470 7553 12294 282120     11214 316813 13939 11565 692609
2020 21679 5796   9725 7391 9734 289472     12113 312683 11403 12908 692903
2021 21767 4459   6190 8246 8933 337931     5426 352064 11080 11188 767284^^
2022 21530 4988   7134 7688 6214 310145     7024 333697 12214 8577 719211^^
2023* 17556 4632   5630 3994 5157 242117     5972 276923 8030 12539 582552^^
Table 3.4. Northeast Arctic COD. Nominal catch(t) by countries. (Subarea 1 and divisions 2a and 2b combined, data provided by Working group members

* Provisional figures

** USSR prior to 1991.

*** Includes Baltic countries.

^ Includes unspecified EU catches.

^^ In 2022-2024 assessment and advice was carried out by the Joint Russian-Norwegian working group on Arctic Fisheries (JRN-AFWG) which compiled catches for 2021-2023 and gave advice for 2023-2025.

Year Area covered Additional area implied in adjustment Adjustment method
1981-92 88.1    
1993 137.6    
1994 161.1    
1995 191.9    
1996 166.1    
1997 88.4 56.2 Index ratio by age
1998 100.4 51.1 Index ratio by age
1999 118.5    
2000 163.2    
2001 164.7    
2002 157.4    
2003 147.4    
2004 164.4    
2005 179.9    
2006 170.1 18.1 Partly covered strata raised to full strata area
2007 123.9 56.7 Index ratio by age
2008 165.2    
2009 171.8    
2010 160.5    
2011 174.3    
2012 151.3 16.7 Index ratio by age
2013 203.6    
2014 266.8    
2015 243.3    
2016 228.0    
2017 184.4 37.5 Index ratio by age
2018 236.3    
2019 241.2    
2020 203.2 25.1 Index ratio by age
2021 232.0 10.9 Index ratio by age
2022 232.7    
2023 253.3    
2024 263.1    
Table 3.5. Barents Sea winter survey. Area covered (‘000 square nautical miles) and areas implied in the method used to adjust for missing coverage in Russian Economic Zone (REZ). “Index ratio by age” means that the index by age (for the area outside REZ) was scaled by the observed ratio between total index and the index outside REZ observed in the years prior to the survey.

 

SAM Wed May 29 15:23:46 2024

Table 3.6. Northeast Arctic cod. Catch numbers-at-age (Thous)
Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp  
1946 4008 10387 18906 16596 13843 15370 59845 22618 10093 9573 5460 1927 750  
1947 710 13192 43890 52017 45501 13075 19718 47678 31392 9348 9330 4622 4103  
1948 140 3872 31054 55983 77375 21482 15237 9815 30041 7945 4491 3899 4205  
1949 991 6808 35214 100497 83283 29727 13207 5606 8617 13154 3657 1895 2167  
1950 1281 10954 29045 45233 62579 30037 19481 9172 6019 4133 6750 1662 1450  
1951 24687 77924 64013 46867 37535 33673 23510 10589 4221 1288 1002 3322 611  
1952 24099 120704 113203 73827 49389 20562 24367 15651 8327 3565 647 467 1044  
1953 47413 107659 112040 55500 22742 16863 10559 10553 5637 1752 468 173 156  
1954 11473 155171 146395 100751 40635 10713 11791 8557 6751 2370 896 268 123  
1955 3902 37652 201834 161336 84031 30451 13713 9481 4140 2406 867 355 128  
1956 10614 24172 129803 250472 86784 51091 14987 7465 3952 1655 1292 448 166  
1957 17321 33931 27182 70702 87033 39213 17747 6219 3232 1220 347 299 173  
1958 31219 133576 71051 40737 38380 35786 13338 10475 3289 1070 252 40 141  
1959 32308 77942 148285 53480 18498 17735 23118 9483 3748 997 254 161 98  
1960 37882 97865 64222 67425 23117 8429 7240 11675 4504 1843 354 102 226  
1961 45478 132655 123458 51167 38740 17376 5791 6778 5560 1682 910 280 108  
1962 42416 170566 167241 89460 28297 21996 7956 2728 2603 1647 392 280 103  
1963 13196 106984 205549 95498 35518 16221 11894 3884 1021 1025 498 129 157  
1964 5298 45912 97950 58575 19642 9162 6196 3553 783 172 387 264 131  
1965 15725 25999 78299 68511 25444 8438 3569 1467 1161 131 61 79 197  
1966 55937 55644 34676 42539 37169 18500 5077 1495 380 403 77 9 70  
1967 34467 160048 69235 22061 26295 25139 11323 2329 687 316 225 40 14  
1968 3709 174585 267961 107051 26701 16399 11597 3657 657 122 124 70 46  
1969 2307 24545 238511 181239 79363 26989 13463 5092 1913 414 121 23 46  
1970 7164 10792 25813 137829 96420 31920 8933 3249 1232 260 106 39 35  
1971 7754 13739 11831 9527 59290 52003 12093 2434 762 418 149 42 25  
1972 35536 45431 26832 12089 7918 34885 22315 4572 1215 353 315 121 40  
1973 294262 131493 61000 20569 7248 8328 19130 4499 677 195 81 59 55  
1974 91855 437377 203772 47006 12630 4370 2523 5607 2127 322 151 83 62  
1975 45282 59798 226646 118567 29522 9353 2617 1555 1928 575 231 15 37  
1976 85337 114341 79993 118236 47872 13962 4051 936 558 442 139 26 53  
1977 39594 168609 136335 52925 61821 23338 5659 1521 610 271 122 92 54  
1978 78822 45400 88495 56823 25407 31821 9408 1227 913 446 748 48 51  
1979 8600 77484 43677 31943 16815 8274 10974 1785 427 103 59 38 45  
1980 3911 17086 81986 40061 17664 7442 3508 3196 678 79 24 26 8  
1981 3407 9466 20803 63433 21788 9933 4267 1311 882 109 37 3 NA  
1982 8948 20933 19345 28084 42496 8395 2878 708 271 260 27 5 5  
1983 3108 19594 20473 17656 17004 18329 2545 646 229 74 58 20 5  
1984 6942 14240 18807 20086 15145 8287 5988 783 232 153 49 12 8  
1985 24634 45769 27806 19418 11369 3747 1557 768 137 36 31 32 8  
1986 28968 70993 78672 25215 11711 4063 976 726 557 136 28 34 14  
1987 13648 137106 98210 61407 13707 3866 910 455 187 227 21 59 20  
1988 9828 22774 135347 54379 21015 3304 1236 519 106 69 43 14 5  
1989 5085 17313 32165 81756 27854 5501 827 290 41 13 NA 11 16  
1990 1911 7551 12999 17827 30007 6810 828 179 59 15 6 5 2  
1991 4963 10933 16467 20342 19479 25193 3888 428 48 12 NA NA 2  
1992 21835 36015 27494 23392 18351 13541 18321 2529 264 82 3 9 NA  
1993 10094 46182 63578 33623 14866 9449 6571 12593 1749 377 63 22 NA  
1994 6531 59444 102548 59766 32504 10019 6163 3671 7528 995 121 19 4  
1995 4879 42587 115329 98485 32036 7334 3014 1725 1174 1920 222 41 NA  
1996 7655 28782 80711 100509 54590 10545 2023 930 462 230 809 84 NA  
1997 12827 36491 69633 83017 65768 28392 4651 1151 373 213 144 238 NA  
1998 31887 88874 48972 40493 34513 26354 6583 965 197 69 42 22 53  
1999 7501 77714 92816 31139 15778 15851 8828 1837 195 40 34 8 30  
2000 4701 33094 93044 47210 12671 6677 4787 1647 321 71 11 NA 14  
2001 5044 35019 62139 62456 22794 5266 1773 1163 343 85 6 7 22  
2002 2348 31033 76175 67656 42122 11527 1801 529 223 120 21 9 6  
2003 7263 20885 64447 71109 36706 14002 2887 492 142 97 21 43 NA  
2004 2090 38226 50826 68350 50838 18118 6239 1746 295 127 39 16 8  
2005 5815 19768 113144 61665 44777 20553 6285 2348 562 100 21 24 7  
2006 8548 47207 33625 78150 31770 15667 7245 1788 737 210 26 45 155  
2007 25473 43817 62877 26303 34392 11240 4080 1381 505 285 44 13 35  
2008 8459 51704 40656 35072 14037 20676 5503 1794 715 229 42 26 13  
2009 4866 38711 83998 46639 20789 8417 8920 1957 872 987 76 21 20  
2010 1778 16193 53855 75853 36797 17062 4784 4325 3034 913 189 49 35  
2011 1418 8033 32472 70938 73875 21116 11708 5058 3237 600 434 12 0  
2012 2695 10462 16646 40372 70014 48315 12326 5214 1926 1124 317 70 24  
2013 2903 13659 22752 21020 54231 74451 47124 9143 2963 694 449 89 145  
2014 5234 19226 38407 36633 29901 56109 47540 22738 3717 1169 313 210 157  
2015 4315 31383 41181 51209 33745 22530 23609 24553 16071 2510 468 134 254  
2016 2076 11291 50231 43609 35265 23417 14592 20105 15862 4781 871 249 308  
2017 6535 13128 28365 66504 46136 28507 15307 10073 12169 6465 1927 399 285  
2018 6120 28569 27128 33816 54328 28323 16208 9722 7132 3740 2295 840 271  
2019 4389 21405 48422 29849 26548 39759 17395 8883 4606 2109 715 564 322  
2020 3992 22446 37649 52454 31009 20904 23618 11768 6130 1572 591 310 278  
2021 2983 17935 54005 59732 59136 22397 14744 13589 4919 1737 678 228 344  
2022 5725 23486 53467 68112 47067 30569 11776 6046 3797 1489 575 164 107  
2023 11046 15493 30653 37250 38616 28163 16233 5885 1995 984 195 56 94  
Norway                          
Year     Age                      
  2 3 4 5 6 7 8 9 10 11 12 13 14 15+
1983 0.41 0.82 1.32 2.05 2.82 3.94 5.53 7.70 9.17 11.46 16.59 16.42 16.96 24.46
1984 1.16 1.47 1.97 2.53 3.13 3.82 4.81 5.95 7.19 7.86 8.46 7.99 9.78 10.64
1985 0.34 0.99 1.43 2.14 3.27 4.68 6.05 7.73 9.86 11.87 14.16 14.17 13.52 15.33
1986 0.30 0.67 1.34 2.04 3.14 4.60 5.78 6.70 7.52 9.74 10.68 12.86 9.59 16.31
1987 0.24 0.48 0.88 1.66 2.72 4.35 6.21 8.78 9.78 12.50 13.75 15.12 10.43 19.95
1988 0.36 0.56 0.83 1.31 2.34 3.84 6.50 8.76 9.97 11.06 14.43 19.02 12.89 10.16
1989 0.53 0.75 0.90 1.17 1.95 3.20 4.88 7.82 9.40 11.52 11.47   19.47 14.68
1990 0.40 0.81 1.22 1.59 2.14 3.29 4.99 7.83 10.54 14.21 17.63 7.97 14.64  
1991 0.63 1.37 1.77 2.31 3.01 3.68 4.63 6.06 8.98 12.89 17.00   14.17 16.63
1992 0.41 1.10 1.79 2.45 3.22 4.33 5.27 6.21 8.10 10.51 11.59   15.81 6.52
1993 0.30 0.83 1.70 2.41 3.35 4.27 5.45 6.28 7.10 7.82 10.10 16.03 19.51 17.68
1994 0.30 0.82 1.37 2.23 3.35 4.27 5.56 6.86 7.45 7.98 9.53 12.16 11.45 19.79
1995 0.44 0.78 1.26 1.87 2.80 4.12 5.15 5.96 7.90 8.67 9.20 11.53 17.77 21.11
1996 0.29 0.90 1.15 1.67 2.58 4.08 6.04 6.62 7.96 9.36 10.55 11.41 9.51 24.24
1997 0.35 0.78 1.14 1.56 2.25 3.48 5.35 7.38 7.55 8.30 11.15 8.64 12.80  
1998 0.38 0.68 1.03 1.64 2.23 3.24 4.85 6.88 9.18 9.84 15.78 14.37 13.77 15.58
1999 0.46 0.88 1.16 1.65 2.40 3.12 4.26 6.00 6.52 10.64 14.05 12.67 9.20 17.22
2000 0.31 0.65 1.23 1.80 2.54 3.58 4.49 5.71 7.54 7.86 12.71 14.71 15.40 20.26
2001 0.30 0.77 1.18 1.83 2.75 3.64 4.88 5.93 7.43 8.90 10.22 11.11 13.03 18.85
2002 0.31 0.90 1.40 1.90 2.60 3.55 4.60 5.80 7.40 9.56 8.71 12.92 8.42 17.61
2003 0.55 0.88 1.39 2.01 2.63 3.59 4.83 5.57 7.262 9.36 9.52 9.52 10.68 21.66
2004 0.54 1.08 1.41 1.95 2.69 3.46 4.77 6.72 7.90 8.66 12.21 14.02 16.50 11.37
2005 0.58 0.92 1.38 1.86 2.61 3.54 4.57 6.41 8.24 9.89 11.04 14.08 11.81 20.08
2006 0.51 0.97 1.45 2.06 2.71 3.56 4.57 5.53 6.61 7.53 8.55 8.44 9.82 12.31
2007 0.53 1.07 1.70 2.37 3.26 4.36 5.45 6.71 8.08 8.56 9.75 11.72 12.72 15.58
2008 0.65 1.12 1.70 2.44 3.32 4.41 5.61 6.84 8.25 9.31 10.54 12.45 13.59 21.15
2009 0.56 0.98 1.47 2.10 2.83 3.90 5.06 5.76 7.31 7.79 7.81 10.68 11.83 14.76
2010 0.55 0.95 1.46 2.06 2.93 4.02 5.40 6.44 7.19 8.43 9.11 10.46 11.39 15.55
2011 0.53 1.09 1.50 2.06 2.85 3.70 5.01 6.26 7.33 8.34 9.87 13.23    
2012   0.83 1.32 1.92 2.65 3.52 4.71 6.34 8.11 9.92 11.31 13.45 15.75  
2013 0.43 0.95 1.40 2.00 2.64 3.44 4.51 5.67 7.29 8.80 10.33 11.38 12.56  
2014 0.59 1.07 1.55 2.15 2.80 3.70 4.57 5.78 6.97 8.35 9.46 10.99 12.28 15.49
2015 0.64 0.96 1.42 1.96 2.57 3.30 4.13 5.49 6.46 7.18 8.63 10.37 12.24 14.60
2016 0.59 0.96 1.46 1.99 2.71 3.57 4.56 5.78 6.82 8.08 9.33 10.01 11.68 14.79
2017 0.55 0.99 1.53 2.06 2.69 3.64 4.72 5.91 6.91 7.88 9.41 10.93 11.78 15.07
2018 0.62 1.05 1.51 2.11 2.80 3.48 4.54 5.80 6.97 7.64 9.11 10.29 11.35 14.05
2019 0.51 0.96 1.43 2.02 2.72 3.60 4.51 5.80 6.91 7.94 8.89 10.94 11.55 14.49
2020 0.58 0.94 1.42 2.01 2.66 3.50 4.59 5.77 7.03 8.46 9.78 10.97 12.74 16.08
2021 0.39 0.75 1.27 1.86 2.55 3.42 4.52 5.86 7.13 8.55 10.09 11.79 12.98 15.75
2022 0.32 0.71 1.15 1.73 2.42 3.36 4.47 5.79 7.18 8.65 10.09 11.45 12.93 16.43
2023 0.38 0.80 1.23 1.79 2.51 3.39 4.47 5.80 7.23 8.74 9.86 11.79 13.66 15.78
Table 3.7. Northeast Arctic COD. Weights-at-age (kg) in landings from various countries
Russia (trawl only)                          
Year       Age                      
    2 3 4 5 6 7 8 9 10 11 12 13 14 15+
1983   0.65 1.05 1.58 2.31 3.39 4.87 6.86 8.72 10.40 12.07 14.43      
1984   0.53 0.88 1.45 2.22 3.21 4.73 6.05 8.43 10.34 12.61 14.95      
1985   0.33 0.77 1.31 1.84 2.96 4.17 5.94 6.38 8.58 10.28        
1986   0.29 0.61 1.14 1.75 2.45 4.17 6.18 8.04 9.48 11.33 12.35 14.13    
1987   0.24 0.52 0.88 1.42 2.07 2.96 5.07 7.56 8.93 10.80 13.05 18.16    
1988   0.27 0.49 0.88 1.32 2.06 3.02 4.40 6.91 9.15 11.65 12.53 14.68    
1989   0.50 0.73 1.00 1.39 1.88 2.67 4.06 6.09 7.76 9.88        
1990   0.45 0.83 1.21 1.70 2.27 3.16 4.35 6.25 8.73 10.85 13.52      
1991   0.36 0.64 1.05 2.03 2.85 3.77 4.92 6.13 8.36 10.44 15.84 19.33    
1992   0.55 1.20 1.44 2.07 3.04 4.24 5.14 5.97 7.25 9.28 11.36      
1993   0.48 0.78 1.39 2.06 2.62 4.07 5.72 6.79 7.59 11.26 14.79 17.71    
1994   0.41 0.81 1.24 1.80 2.55 2.88 4.96 6.91 8.12 10.28 12.42 16.93    
1995   0.37 0.77 1.21 1.74 2.37 3.40 4.71 6.73 8.47 9.58 12.03 16.99    
1996   0.30 0.64 1.09 1.60 2.37 3.42 5.30 7.86 8.86 10.87 11.80      
1997   0.30 0.57 1.00 1.52 2.18 3.30 4.94 7.15 10.08 11.87 13.54      
1998   0.33 0.68 1.06 1.60 2.34 3.39 5.03 6.89 10.76 12.39 13.61 14.72    
1999   0.24 0.58 0.98 1.41 2.17 3.26 4.42 5.70 7.27 10.24 14.12      
2000   0.18 0.48 0.85 1.44 2.16 3.12 4.44 5.79 7.49 9.66 10.36      
2001   0.12 0.31 0.62 1.00 1.53 2.30 3.31 4.57 6.55 8.11 9.52 11.99    
2002   0.20 0.60 1.05 1.46 2.14 3.27 4.47 6.23 8.37 10.06 12.37      
2003   0.23 0.63 1.06 1.78 2.40 3.41 4.86 6.28 7.55 11.10 13.41 12.12 14.51  
2004   0.30 0.57 1.09 1.55 2.37 3.20 4.73 6.92 8.41 9.77 11.08      
2005   0.33 0.65 0.98 1.50 2.10 3.08 4.31 5.81 8.42 10.37 13.56 14.13    
2006   0.27 0.68 1.05 1.49 2.25 3.16 4.54 5.90 8.59 10.31 12.31      
2007   0.23 0.67 1.12 1.66 2.25 3.31 4.57 6.27 8.20 10.02 12.36 12.42    
2008   0.28 0.64 1.16 1.74 2.65 3.58 4.74 5.73 7.32 8.07 9.52 12.52    
2009   0.31 0.64 1.09 1.58 2.11 3.19 4.80 6.58 7.97 9.84 11.51      
2010   0.25 0.57 1.00 1.64 2.28 3.14 4.53 5.98 8.03 9.71 10.70 13.53    
2011   0.25 0.62 1.05 1.56 2.18 2.95 4.33 6.21 8.04 10.13 12.25 15.18    
2012   0.29 0.60 1.07 1.66 2.25 2.95 4.17 6.23 8.58 11.08 12.24 14.07 15.22 16.39
2013   0.33 0.63 1.05 1.54 2.26 3.09 4.08 5.47 7.37 9.59 12.57 15.54 17.05  
2014   0.32 0.61 1.05 1.61 2.26 3.15 4.00 5.24 7.13 9.46 11.18 14.47    
2015   0.30 0.60 0.97 1.49 2.11 3.13 4.64 5.78 7.13 9.53 12.12 16.71 17.37  
2016   0.26 0.55 0.97 1.53 2.20 3.19 4.50 6.12 7.97 9.55 10.95 14.35 14.74 17.25
2017   0.33 0.63 1.03 1.56 2.24 3.24 4.67 6.34 7.74 9.40 11.12 14.43 16.67 11.91
2018   0.33 0.68 1.06 1.62 2.40 3.22 4.66 6.23 7.79 8.91 10.26 11.26 13.41 10.14
2019   0.29 0.62 1.10 1.60 2.33 3.22 4.44 6.45 8.10 9.60 11.02 13.83 10.65 10.65
2020   0.27 0.47 0.93 1.44 2.05 2.95 4.28 5.73 7.59 8.45 10.66 12.26 12.18 12.23
2021   0.19 0.44 0.76 1.35 2.02 2.81 4.25 6.26 7.81 9.59 10.67 10.86 13.62 12.31
2022   0.39 0.62 0.91 1.42 2.21 3.22 4.45 6.15 8.16 9.91 10.83 11.96   10.33
2023   0.36 0.63 1.03 1.55 2.29 3.27 4.49 5.81 7.05 8.92 9.99 10.77    
                               
Table 3.7. Northeast Arctic COD. Weights-at-age (kg) in landings from various countries (continued)
Germany (Division IIa and IIb)                      
Year       Age                      
    2 3 4 5 6 7 8 9 10 11 12 13 14 15+
1994     0.68 1.04 2.24 3.49 4.51 5.79 6.93 8.16 8.46 8.74 9.48 15.25  
1995     0.44 0.84 1.5 2.72 3.81 4.46 4.81 7.37 7.69 8.25 9.47    
1996     0.84 1.15 1.64 2.53 3.58 4.13 3.9 4.68 6.98 6.43 11.32    
1997     0.43 0.92 1.42 2.01 3.15 4.04 5.16 4.82 3.96 7.04 8.8    
1998   0.23 0.73 1.17 1.89 2.72 3.25 4.13 5.63 6.5 8.57 8.42 11.45 8.79  
1999 1   0.853 1.448 1.998 2.65 3.473 4.156 5.447 6.82 5.902   8.01    
2000 2 0.26 0.73 1.36 2.04 2.87 3.67 4.88 5.78 7.05 8.45 8.67 9.33 6.88  
2001   0.38 0.80 1.21 1.90 2.74 3.90 4.99 5.69 7.15 7.32 11.72 9.11 6.60  
2002   0.35 1.00 1.31 1.80 2.53 3.64 4.38 5.07 6.82 9.21 7.59 13.18 19.17 19.20
2003   0.22 0.44 1.04 1.71 2.31 3.27 4.93 6.17 7.77 9.61 9.99 12.29 13.59  
2004 2 0.22 0.73 1.01 1.75 2.58 3.33 4.73 6.32 7.20 8.45 9.20 11.99 10.14 13.11
2005 3 0.57 0.77 1.13 1.66 2.33 3.36 4.38 5.92 6.65 7.26 10.01 11.14    
2006 2 0.71 0.91 1.39 1.88 2.56 3.77 5.33 6.68 9.14 10.89 11.51 16.83 18.77  
2007 3 0.59 1.35 1.79 2.51 3.53 4.00 4.95 6.55 7.54 9.71 11.40 11.57 23.34 15.61
2008 3 0.23 0.51 1.14 1.76 2.57 3.15 4.40 5.43 7.18 8.39 10.15 10.03 10.99 14.26
2009 3 0.35 0.60 1.19 1.83 2.96 4.08 5.61 6.97 8.55 9.13 10.54 13.34 10.30 17.06
2010 3 0.36 0.67 0.93 1.71 2.46 3.21 4.93 6.75 7.80 8.70 8.53 10.17 12.36 14.11
2011 1     1.75 3.09 3.30 3.28 4.13 4.99 6.61 7.91 9.38 10.79 14.67 14.91
2013 3     1.03 1.37 1.87 2.65 3.45 4.49 7.26 11.42 12.86 13.07    
2014 4   0.68 0.96 1.39 1.69 3.06 4.07 5.65 8.15 10.36 13.07 13.52    
2015 4 0.82 1.05 1.67 2.33 3.56 4.50 5.41 6.20 6.39          
2016 1   1.38 2.60 3.55 4.81 6.33 7.61 8.90 9.26 10.83 13.41 16.84 17.03 17.76
2017 1   1.58 2.79 3.93 3.93 4.77 6.35 8.16 9.09 10.39 11.24 12.48 14.39 13.04
2018 3 0.58 1.16 1.76 2.45 3.34 4.13 5.81 7.16 8.99 9.96 10.85 11.73 14.01 17.79
2019 1   0.82 1.37 1.80 2.26 3.49 4.45 5.44 7.08 9.25 9.39 13.30 12.24 15.25
2020 5     1.6 1.63 2.48 3.13 5.01 5.93 8.36 9.31 12.16 12.96 12.77 14.08
2021 2   0.68 1.3 1.52 2.25 3.22 4.58 6.49 7.43 10.37 11.73 14.64 14.34 15.74
2022 1   0.59 0.82 1.40 2.20 3.04 4.13 5.54 7.36 8.56 10.79 13.12 14.96 15.18
2023 2   0.74 0.94 1.25 1.89 2.97 4.36 5.7 5.55 8.4 10.06 9.86 22.68  
1 Division IIa only                        
2 IIa and IIb combined                      
3 I,IIa and IIb combined                      
4 Division IIb only                      
5 I and IIa combined                      
                         
Table 3.7. Northeast Arctic COD. Weights-at-age (kg) in landings from various countries (continued)
                         
Spain (Division IIb)                          
Year       Age                      
    2 3 4 5 6 7 8 9 10 11 12 13 14 15+
1994   0.43 1.08 1.38 2.32 2.47 2.68 3.46 5.20 7.04 6.79 7.20 8.04 10.46 15.35
1995   0.42 0.51 0.98 1.99 3.41 4.95 5.52 8.62 9.21 11.42 9.78 8.08    
1996     0.66 1.12 1.57 2.43 3.17 3.59 4.44 5.48 6.79 8.10      
1997 1 0.51 0.65 1.22 1.68 2.60 3.39 4.27 6.67 7.88 11.34 13.33 10.03 8.69  
1998   0.47 0.74 1.15 1.82 2.44 3.32 3.71 5.00 7.26          
1999 1 0.21 0.69 1.06 1.69 2.50 3.32 4.72 5.76 6.77 7.24 7.63      
2000 1 0.23 0.61 1.24 1.75 2.47 3.12 4.65 6.06 7.66 10.94 11.40 7.20    
2001   0.23 0.64 1.25 1.95 2.86 3.55 4.95 6.46 8.50 11.07 13.09      
2002   0.16 0.55 1.00 1.48 2.17 3.29 4.47 5.35 8.29 12.23 9.01 12.16 15.2  
2003     0.58 1.05 1.70 2.33 3.33 4.92 6.24 9.98 13.07 14.74 14.17    
2004 1 0.31 0.56 0.80 1.28 1.96 2.59 3.72 5.36 5.28 7.41   11.43    
2005 1   0.63 1.14 1.85 2.48 3.43 4.25 5.38 8.41 11.19 15.04 16.93    
2006   0.30 0.61 0.99 1.46 2.04 2.55 3.39 3.50 4.70 6.36        
2007   0.42 0.60 1.20 1.76 2.40 3.18 3.96 5.19 6.61 9.48 7.65 12.65 15.74 19.66
2009 1 0.12 0.45 0.95 1.60 2.18 3.36 4.52 6.04 7.30 9.42 10.35 11.47 12.54  
2010 2 0.18 0.56 1.11 1.73 2.36 3.36 5.14 6.88 8.64 9.65 6.83      
2011 1   0.45 0.90 1.26 1.84 2.55 4.08 5.61 8.17 8.14 7.31 8.91    
2012 2   0.40 0.84 1.29 1.96 2.78 3.71 4.99 7.42   7.19 9.32    
2013   0.17 0.72 1.06 1.63 2.36 3.14 3.90 4.36 6.55          
2014   0.24 0.43 0.74 1.27 1.85 2.60 3.56 4.51 5.52 7.18 9.42 9.26 13.16 15.05
2015 2   0.40 0.80 1.19 1.79 2.45 3.38 4.41 5.85 6.64 7.48 6.77    
2016 3 0.11 0.38 0.76 1.20 1.72 2.50 3.39 4.96 7.11 8.56        
2017 2 0.12 0.42 0.75 1.17 1.69 2.50 3.39 4.47 5.69 5.93 6.00 10.91 13.57 10.52
2018 2 0.19 0.45 0.83 1.30 1.86 2.57 3.55 4.92 5.51 7.84 7.08 7.28    
2019 2 0.19 0.39 0.90 1.30 1.85 2.65 3.48 4.83 5.96 5.67 7.04 8.36    
2021 2   0.36 0.60 1.20 1.83 2.49 3.11 4.55 6.10 6.50 7.03   9.013 17.13
2022 2   0.49 0.80 1.25 1.83 2.77 4.06 5.52 7.71 8.87 12.18      
2023 2   0.54 1.15 1.56 2.28 3.27 4.24 5.56 6.62 8.62 7.00 12.98 16.92  
1 IIa and IIb combined                      
2 I,IIa and IIb combined                      
3 I and IIb combined                        
Iceland (Sub-area I)                        
1994   0.42 0.85 1.44 2.77 3.54 4.08 5.84 6.37 7.02 7.48 7.37      
1995     1.17 0.91 1.60 2.28 3.61 4.73 6.27     6.26      
1996     0.36 0.99 1.55 2.83 3.79 4.81 5.34 7.25 7.68 9.08 8.98 10.52  
1997   0.42 0.43 0.76 1.60 2.40 3.45 4.40 5.74 6.15   8.28 10.52 9.89  
UK (England & Wales)                        
1995 1     1.47 2.11 3.47 5.57 6.43 7.17 8.12 8.05 10.2 10.1    
1996 2     1.55 1.81 2.42 3.61 6.3 6.47 7.83 7.91 8.93 9.38 10.9  
1997 2     1.93 2.17 3.07 4.17 4.89 6.46   12.3 8.44      
  1 Division IIa and IIb                      
  2 Division IIa                        
Poland (Division IIb)                        
2006   0.18 0.51 0.89 1.55 2.23 3.6 5.28 6.95 8.478 11 10.8 15.6 18.9  
2008     0.49 0.90 1.45 2.24 2.79 3.82 4.68 5.015 6.45 7.02 7.22 5.99 6.91
2009       1.02 1.72 2.65 3.81 5.23 6.91 8.862 11.1 13.6 16.5    
2010       1.39 1.66 2.29 2.98 3.92 5.18 6.313 6.66 8.72 9.05    
2011       0.99 1.50 2.17 3.15 4.43 7.45 7.28          
2016 1   0.84 1.59 2.29 2.81 3.91 4.78 5.61 6.709 7.89 8.54 11.6 13.7 16.09
2017 2   0.71 1.23 1.52 2.47 3.52 4.78 6.97 9.193 9.95 10.9 14.1    
2018 3   0.74 1.15 1.66 2.45 3.55 4.48 6.06 6.31 7.59 7.91 8.28 8.52 9.40
2019 1       1.57 2.00 2.69 4.04 5.61 7.23 9.13 11.62 12.41 13.46 11.47
  1 Division IIa                        
  2 Division IIa and IIb                      
  3 I and IIb combined                      
Table 3.7. Northeast Arctic COD. Weights at age (kg) in landings from various countries (continued)

SAM Wed May 29 15:23:46 2024

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp
1946 0.350 0.590 1.110 1.690 2.370 3.170 3.980 5.050 5.920 7.200 8.150 8.130 9.250
1947 0.320 0.560 0.950 1.500 2.140 2.920 3.650 4.560 5.840 7.420 8.850 8.790 10.000
1948 0.340 0.530 1.260 1.930 2.460 3.360 4.220 5.310 5.920 7.090 8.430 8.180 9.430
1949 0.370 0.670 1.110 1.660 2.500 3.230 4.070 5.270 5.990 7.080 8.220 8.260 8.700
1950 0.390 0.640 1.290 1.700 2.360 3.480 4.520 5.620 6.400 7.960 8.890 9.070 10.270
1951 0.400 0.830 1.390 1.880 2.540 3.460 4.880 5.200 7.140 8.220 9.390 9.500 9.520
1952 0.440 0.800 1.330 1.920 2.640 3.710 5.060 6.050 7.420 8.430 10.190 10.130 10.560
1953 0.400 0.760 1.280 1.930 2.810 3.720 5.060 6.340 7.400 8.670 10.240 11.410 11.930
1954 0.440 0.770 1.260 1.970 3.030 4.330 5.400 6.750 7.790 10.670 9.680 9.560 11.110
1955 0.320 0.570 1.130 1.730 2.750 3.940 4.900 7.040 7.200 8.780 10.080 11.020 12.110
1956 0.330 0.580 1.070 1.830 2.890 4.250 5.550 7.280 8.000 8.350 9.940 10.250 11.560
1957 0.330 0.590 1.020 1.820 2.890 4.280 5.490 7.510 8.240 9.250 10.610 10.820 12.070
1958 0.340 0.520 0.950 1.920 2.940 4.210 5.610 7.350 8.670 9.580 11.630 11.000 13.830
1959 0.350 0.720 1.470 2.680 3.590 4.320 5.450 6.440 7.170 8.630 11.620 11.950 13.000
1960 0.340 0.510 1.090 2.130 3.380 4.870 6.120 8.490 7.790 8.300 11.420 11.720 13.420
1961 0.310 0.550 1.050 2.200 3.230 5.110 6.150 8.150 8.680 9.600 11.950 13.180 13.420
1962 0.320 0.550 0.930 1.700 3.030 5.030 6.550 7.700 9.270 10.560 12.720 13.480 14.440
1963 0.320 0.610 0.960 1.730 3.040 4.960 6.440 7.910 9.620 11.310 12.740 13.190 14.290
1964 0.330 0.550 0.950 1.860 3.250 4.970 6.410 8.070 9.340 10.160 12.890 13.250 14.000
1965 0.380 0.680 1.030 1.490 2.410 3.520 5.730 7.540 8.470 11.170 13.720 13.460 14.120
1966 0.440 0.740 1.180 1.780 2.460 3.820 5.360 7.270 8.630 10.660 14.150 14.000 15.000
1967 0.290 0.810 1.350 2.040 2.810 3.480 4.890 7.110 9.030 10.590 13.830 14.150 16.760
1968 0.330 0.700 1.480 2.120 3.140 4.210 5.270 6.650 9.010 9.660 14.850 16.300 17.000
1969 0.440 0.790 1.230 2.030 2.900 3.810 5.020 6.430 8.330 10.710 14.210 15.000 17.000
1970 0.370 0.910 1.340 2.000 3.000 4.150 5.590 7.600 8.970 10.990 14.070 14.610 16.000
1971 0.450 0.880 1.380 2.160 3.070 4.220 5.810 7.130 8.620 10.830 12.950 14.250 15.970
1972 0.380 0.770 1.430 2.120 3.230 4.380 5.830 7.620 9.520 12.090 13.670 13.850 16.000
1973 0.380 0.910 1.540 2.260 3.290 4.610 6.570 8.370 10.540 11.620 13.900 14.000 15.840
1974 0.320 0.660 1.170 2.220 3.210 4.390 5.520 7.860 9.820 11.410 13.240 13.700 14.290
1975 0.410 0.640 1.110 1.900 2.950 4.370 5.740 8.770 9.920 11.810 13.110 14.000 14.290
1976 0.350 0.730 1.190 2.010 2.760 4.220 5.880 9.300 10.280 11.860 13.540 14.310 14.280
1977 0.490 0.900 1.430 2.050 3.300 4.560 6.460 8.630 9.930 10.900 13.670 14.260 14.910
1978 0.490 0.810 1.450 2.150 3.040 4.460 6.540 7.980 10.150 10.850 13.180 14.000 15.000
1979 0.350 0.700 1.240 2.140 3.150 4.290 6.580 8.610 9.220 10.890 14.340 14.500 15.310
1980 0.270 0.560 1.020 1.720 3.020 4.200 5.840 7.260 8.840 9.280 14.450 15.000 15.500
1981 0.490 0.980 1.440 2.090 2.980 4.850 6.570 9.160 10.820 10.770 13.930 15.000 16.000
1982 0.370 0.660 1.350 1.990 2.930 4.240 6.460 8.510 12.240 10.780 14.040 15.000 16.000
1983 0.840 1.370 2.090 2.860 3.990 5.580 7.770 9.290 11.550 11.420 12.800 14.180 15.550
1984 1.420 1.930 2.490 3.140 3.910 4.910 6.020 7.400 8.130 11.420 12.800 14.180 15.550
1985 0.940 1.370 2.020 3.220 4.630 6.040 7.660 9.810 11.800 11.420 12.800 14.180 15.550
1986 0.640 1.270 1.880 2.790 4.490 5.840 6.830 7.690 9.810 11.420 12.800 14.180 15.550
1987 0.490 0.880 1.550 2.330 3.440 5.920 8.600 9.600 12.170 11.420 12.800 14.180 15.550
1988 0.540 0.850 1.320 2.240 3.520 5.350 8.060 9.510 11.360 11.420 12.800 14.180 15.550
1989 0.740 0.960 1.310 1.920 2.930 4.640 7.520 9.120 11.080 11.420 12.800 14.180 15.550
1990 0.810 1.220 1.640 2.220 3.240 4.680 7.300 9.840 13.250 11.420 12.800 14.180 15.550
1991 1.050 1.450 2.150 2.890 3.750 4.710 6.080 8.820 11.800 11.420 12.800 14.180 15.550
1992 1.160 1.570 2.210 3.100 4.270 5.190 6.140 7.770 10.120 11.420 12.800 14.180 15.550
1993 0.810 1.520 2.160 2.790 4.070 5.530 6.470 7.190 7.980 11.457 12.800 14.180 15.550
1994 0.820 1.300 2.060 2.890 3.210 5.200 6.800 7.570 8.010 9.955 13.012 14.180 15.550
1995 0.770 1.200 1.780 2.590 3.810 4.990 6.230 8.050 8.740 9.774 11.388 14.546 15.550
1996 0.790 1.110 1.610 2.460 3.820 5.720 6.740 8.040 9.280 10.451 11.190 12.819 16.045
1997 0.670 1.040 1.530 2.220 3.420 5.200 7.190 7.730 8.610 11.145 11.926 12.608 14.234
1998 0.680 1.050 1.620 2.300 3.300 4.860 6.870 9.300 10.300 10.754 12.676 13.394 14.011
1999 0.630 1.010 1.540 2.340 3.210 4.290 6.000 6.730 10.080 11.151 12.255 14.191 14.839
2000 0.570 1.040 1.610 2.340 3.340 4.480 5.720 7.520 8.020 11.930 12.682 13.743 15.675
2001 0.660 1.050 1.620 2.510 3.510 4.780 6.040 7.540 9.000 10.230 13.519 14.197 15.206
2002 0.720 1.130 1.560 2.310 3.520 4.780 6.200 7.660 9.140 10.379 11.687 15.081 15.681
2003 0.670 1.120 1.830 2.500 3.580 5.040 6.360 8.200 10.710 10.167 11.848 13.138 16.602
2004 0.720 1.130 1.610 2.430 3.270 4.720 6.710 7.980 9.190 10.840 11.619 13.310 14.571
2005 0.690 1.080 1.570 2.210 3.260 4.440 6.230 8.190 9.720 10.626 12.347 13.066 14.752
2006 0.720 1.160 1.600 2.390 3.320 4.540 5.470 6.780 7.700 10.800 12.116 13.842 14.494
2007 0.740 1.210 1.830 2.510 3.820 5.040 6.580 8.080 8.940 10.349 12.304 13.596 15.309
2008 0.770 1.270 1.870 2.820 3.790 5.120 6.220 7.750 8.400 10.139 11.816 13.795 15.052
2009 0.750 1.170 1.740 2.420 3.860 5.350 6.430 8.010 8.670 10.055 11.588 13.276 15.261
2010 0.780 1.200 1.740 2.440 3.400 5.040 6.250 7.320 8.530 10.378 11.496 13.033 14.715
2011 0.780 1.310 1.720 2.370 3.200 4.620 6.180 7.470 8.570 10.387 11.847 12.935 14.459
2012 0.670 1.140 1.730 2.340 3.120 4.400 6.280 8.240 10.350 10.367 11.857 13.309 14.356
2013 0.710 1.170 1.670 2.360 3.190 4.220 5.580 7.310 9.080 11.029 11.835 13.320 14.750
2014 0.790 1.200 1.730 2.340 3.280 4.210 5.490 6.980 8.670 10.823 12.551 13.297 14.761
2015 0.780 1.090 1.550 2.180 3.140 4.460 5.610 6.620 7.340 10.215 12.328 14.058 14.737
2016 0.780 1.140 1.660 2.260 3.250 4.500 5.980 7.310 8.540 9.372 11.670 13.822 15.536
2017 0.710 1.150 1.660 2.320 3.320 4.670 6.130 7.150 8.140 9.597 10.752 13.121 15.288
2018 0.860 1.170 1.710 2.500 3.310 4.610 6.030 7.320 8.060 9.707 10.998 12.137 14.552
2019 0.680 1.150 1.660 2.390 3.330 4.450 6.110 7.290 8.410 9.806 11.117 12.401 13.513
2020 0.709 1.084 1.604 2.195 3.092 4.390 5.731 7.218 8.406 9.989 11.226 12.529 13.793
2021 0.527 0.896 1.487 2.159 2.982 4.364 6.048 7.348 8.796 9.991 11.424 12.645 13.928
2022 0.623 0.956 1.478 2.245 3.247 4.441 5.877 7.328 8.738 10.122 11.427 12.858 14.051
2023 0.638 1.056 1.617 2.346 3.310 4.470 5.794 7.141 8.777 9.988 11.519 12.792 14.184
Table 3.8. Northeast Arctic COD. Catch weights at age (kg)

* values starting from 1993, ages 12-15, have been updated by the VB model using the most recent actual data for ages 3-11

SAM Wed May 29 15:23:46 2024

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp
1946 0.35 0.59 1.11 1.69 2.37 3.17 3.98 5.05 5.92 7.2 8.146 8.133 9.253
1947 0.32 0.56 0.95 1.5 2.14 2.92 3.65 4.56 5.84 7.42 8.848 8.789 9.998
1948 0.34 0.53 1.26 1.93 2.46 3.36 4.22 5.31 5.92 7.09 8.43 8.181 9.433
1949 0.37 0.67 1.11 1.66 2.5 3.23 4.07 5.27 5.99 7.08 8.218 8.259 8.701
1950 0.39 0.64 1.29 1.7 2.36 3.48 4.52 5.62 6.4 7.96 8.891 9.07 10.271
1951 0.4 0.83 1.39 1.88 2.54 3.46 4.88 5.2 7.14 8.22 9.389 9.502 9.517
1952 0.44 0.8 1.33 1.92 2.64 3.71 5.06 6.05 7.42 8.43 10.185 10.134 10.563
1953 0.4 0.76 1.28 1.93 2.81 3.72 5.06 6.34 7.4 8.67 10.238 11.409 11.926
1954 0.44 0.77 1.26 1.97 3.03 4.33 5.4 6.75 7.79 10.67 9.68 9.557 11.106
1955 0.32 0.57 1.13 1.73 2.75 3.94 4.9 7.04 7.2 8.78 10.077 11.023 12.105
1956 0.33 0.58 1.07 1.83 2.89 4.25 5.55 7.28 8 8.35 9.944 10.248 11.564
1957 0.33 0.59 1.02 1.82 2.89 4.28 5.49 7.51 8.24 9.25 10.605 10.825 12.075
1958 0.34 0.52 0.95 1.92 2.94 4.21 5.61 7.35 8.67 9.58 11.631 11 13.832
1959 0.35 0.72 1.47 2.68 3.59 4.32 5.45 6.44 7.17 8.63 11.621 11.95 13
1960 0.34 0.51 1.09 2.13 3.38 4.87 6.12 8.49 7.79 8.3 11.422 11.719 13.424
1961 0.31 0.55 1.05 2.2 3.23 5.11 6.15 8.15 8.68 9.6 11.952 13.181 13.422
1962 0.32 0.55 0.93 1.7 3.03 5.03 6.55 7.7 9.27 10.56 12.717 13.482 14.44
1963 0.32 0.61 0.96 1.73 3.04 4.96 6.44 7.91 9.62 11.31 12.737 13.193 14.287
1964 0.33 0.55 0.95 1.86 3.25 4.97 6.41 8.07 9.34 10.16 12.886 13.251 14
1965 0.38 0.68 1.03 1.49 2.41 3.52 5.73 7.54 8.47 11.17 13.722 13.465 14.118
1966 0.44 0.74 1.18 1.78 2.46 3.82 5.36 7.27 8.63 10.66 14.148 14 15
1967 0.29 0.81 1.35 2.04 2.81 3.48 4.89 7.11 9.03 10.59 13.829 14.146 16.756
1968 0.33 0.7 1.48 2.12 3.14 4.21 5.27 6.65 9.01 9.66 14.848 16.3 17
1969 0.44 0.79 1.23 2.03 2.9 3.81 5.02 6.43 8.33 10.71 14.211 15 17
1970 0.37 0.91 1.34 2 3 4.15 5.59 7.6 8.97 10.99 14.074 14.611 16
1971 0.45 0.88 1.38 2.16 3.07 4.22 5.81 7.13 8.62 10.83 12.945 14.25 15.973
1972 0.38 0.77 1.43 2.12 3.23 4.38 5.83 7.62 9.52 12.09 13.673 13.852 16
1973 0.38 0.91 1.54 2.26 3.29 4.61 6.57 8.37 10.54 11.62 13.904 14 15.841
1974 0.32 0.66 1.17 2.22 3.21 4.39 5.52 7.86 9.82 11.41 13.242 13.704 14.291
1975 0.41 0.64 1.11 1.9 2.95 4.37 5.74 8.77 9.92 11.81 13.107 14 14.293
1976 0.35 0.73 1.19 2.01 2.76 4.22 5.88 9.3 10.28 11.86 13.544 14.311 14.284
1977 0.49 0.9 1.43 2.05 3.3 4.56 6.46 8.63 9.93 10.9 13.668 14.255 14.906
1978 0.49 0.81 1.45 2.15 3.04 4.46 6.54 7.98 10.15 10.85 13.177 14 15
1979 0.35 0.7 1.24 2.14 3.15 4.29 6.58 8.61 9.22 10.89 14.344 14.5 15.315
1980 0.27 0.56 1.02 1.72 3.02 4.2 5.84 7.26 8.84 9.28 14.448 15 15.5
1981 0.49 0.98 1.44 2.09 2.98 4.85 6.57 9.16 10.82 10.77 13.932 15 16
1982 0.37 0.66 1.35 1.99 2.93 4.24 6.46 8.51 12.24 10.78 14.041 15 16
1983 0.37 0.92 1.6 2.44 3.82 4.76 6.17 7.7 9.25 12.621 14.544 16.466 18.388
1984 0.42 1.16 1.81 2.79 3.78 4.57 6.17 7.7 9.25 12.621 14.544 16.466 18.388
1985 0.413 0.875 1.603 2.81 4.059 5.833 7.685 10.117 14.29 12.621 14.544 16.466 18.388
1986 0.311 0.88 1.47 2.467 3.915 5.81 6.58 6.833 11.004 12.621 14.544 16.466 18.388
1987 0.211 0.498 1.254 2.047 3.431 5.137 6.523 9.3 13.15 12.621 14.544 16.466 18.388
1988 0.212 0.404 0.79 1.903 2.977 4.392 7.812 12.112 13.107 12.621 14.544 16.466 18.388
1989 0.299 0.52 0.868 1.477 2.686 4.628 7.048 9.98 9.25 12.621 14.544 16.466 18.388
1990 0.398 0.705 1.182 1.719 2.458 3.565 4.71 7.801 8.956 12.621 14.544 16.466 18.388
1991 0.518 1.136 1.743 2.428 3.214 4.538 6.88 10.719 9.445 12.621 14.544 16.466 18.388
1992 0.44 0.931 1.812 2.716 3.895 5.176 6.774 9.598 12.427 12.621 14.544 16.466 18.388
1993 0.344 1.172 1.82 2.823 4.031 5.497 6.765 8.571 10.847 12.621 14.544 16.466 18.388
1994 0.237 0.757 1.419 2.458 3.845 5.374 6.648 7.653 8.136 12.916 16.114 16.466 18.388
1995 0.197 0.487 1.141 2.118 3.504 4.915 6.949 9.051 9.775 11.409 15.248 18.62 18.388
1996 0.206 0.482 0.98 2.041 3.52 5.507 7.74 9.922 10.63 12.093 13.533 17.659 21.171
1997 0.211 0.537 1.11 1.876 3.381 5.258 8.546 10.653 10.776 13.232 14.313 15.745 20.122
1998 0.242 0.561 1.179 1.936 2.944 4.583 7.092 10.7 12.042 13.771 15.607 16.617 18.021
1999 0.209 0.514 1.183 2.007 3.037 4.479 6.512 10.028 11.117 14.698 16.215 18.057 18.981
2000 0.194 0.465 1.218 1.963 3.064 4.12 5.746 7.157 9.961 14.589 17.26 18.733 20.557
2001 0.284 0.513 1.21 2.25 3.299 5.066 6.373 9.29 11.456 13.317 17.138 19.887 21.294
2002 0.23 0.603 1.184 2.138 3.336 4.81 6.912 8.809 10.475 12.534 15.703 19.752 22.549
2003 0.233 0.551 1.317 2.022 3.239 4.984 6.727 8.422 14.226 12.524 14.815 18.164 22.403
2004 0.24 0.55 1.074 2.038 2.911 4.402 6.263 8.535 10.197 12.371 14.803 17.176 20.674
2005 0.225 0.61 1.083 1.87 3.002 3.971 5.789 8.127 12.759 12.611 14.63 17.163 19.594
2006 0.252 0.591 1.219 2.014 3.028 4.434 5.999 7.774 9.954 13.679 14.902 16.971 19.58
2007 0.249 0.663 1.329 2.127 3.183 4.59 6.477 8.88 12.124 12.261 16.111 17.274 19.368
2008 0.286 0.726 1.418 2.41 3.331 4.914 6.747 8.851 10.393 12.776 14.504 18.617 19.701
2009 0.274 0.652 1.353 2.312 3.803 5.103 6.75 9.252 10.119 12.323 15.09 16.83 21.168
2010 0.258 0.608 1.208 2.01 3.088 4.903 6.498 7.992 9.689 12.467 14.574 17.483 19.214
2011 0.225 0.6 1.097 1.926 2.861 4.403 6.531 8.648 9.885 12.508 14.738 16.909 19.929
2012 0.227 0.555 1.182 1.834 2.831 4.124 6.056 8.584 11.498 12.249 14.785 17.092 19.3
2013 0.247 0.577 1.134 1.998 2.841 4.015 5.523 8.077 10.304 13.207 14.491 17.144 19.501
2014 0.216 0.577 1.137 1.791 2.781 3.85 5.245 6.992 9.378 12.746 15.578 16.816 19.558
2015 0.229 0.54 1.134 1.934 2.753 4.081 5.315 7.135 8.947 11.778 15.056 18.025 19.198
2016 0.21 0.536 1.001 1.812 2.72 3.958 5.64 7.064 8.569 10.885 13.954 17.445 20.522
2017 0.255 0.675 1.107 1.896 2.826 4.158 5.7 7.628 9.071 10.634 12.934 16.216 19.888
2018 0.286 0.62 1.188 1.949 2.768 4.059 5.749 7.38 9.097 10.8 12.646 15.073 18.54
2019 0.24 0.603 1.085 1.82 3.025 4.296 5.891 7.293 9.667 11.186 12.837 14.749 17.28
2020 0.148 0.503 1.055 1.692 2.59 4.064 5.617 7.673 9.313 11.306 13.278 14.964 16.922
2021 0.17 0.437 0.954 1.718 2.669 3.804 5.822 7.396 9.334 11.187 13.415 15.459 17.159
2022 0.293 0.48 0.929 1.616 2.741 3.933 5.744 8.012 9.648 11.361 13.279 15.613 17.706
2023 0.272 0.645 1.022 1.71 2.876 4.352 5.925 7.879 9.79 11.36 13.478 15.46 17.876
2024 0.246 0.706 1.075 1.803 2.667 3.995 5.95 7.011 9.436 11.714 13.477 15.683 17.707
Table 3.9. Northeast Arctic COD. Stock weights at age (kg)

2023 data updated,

values starting from 1993, ages 12-15, have been updated by the VB model using the most recent actual data for ages 3-11

Norway              
               
  Percentage mature
  Age
Year 3 4 5 6 7 8 9 10
                 
1982 0 5 10 34 65 82 92 100
1983 5 8 10 30 73 88 97 100
                 
Russia                
  Percentage mature
  Age
Year 3 4 5 6 7 8 9 10
                 
1984 0 5 18 31 56 90 99 100
1985 0 1 10 33 59 85 92 100
1986 0 2 9 19 56 76 89 100
1987 0 1 9 23 27 61 81 80
1988 0 1 3 25 53 79 100 100
1989 0 0 2 15 39 59 83 100
1990 0 2 6 20 47 62 81 95
1991 0 3 1 23 66 82 96 100
1992 0 1 8 31 73 92 95 100
1993 0 3 7 21 56 89 95 99
1994 0 1 8 30 55 84 95 98
1995 0 0 4 23 61 75 94 97
1996 0 0 1 22 56 82 95 100
1997 0 0 1 10 48 73 90 100
1998 0 0 2 15 47 87 97 96
1999 0 0.2 1.3 9.9 38.4 74.9 94 100
2000 0 0 6 19.2 51.4 84 95.5 100
2001 0.1 0.1 3.9 27.9 62.3 89.4 96.3 100
2002 0.1 1.9 10.9 34.4 68.1 82.8 97.6 100
2003 0.2 0 11 29.2 65.9 89.6 95.1 100
2004 0 0.7 8 33.8 63.3 83.4 96.4 96.4
2005 0 0.6 4.6 24.2 61.5 84.9 95.3 98.1
2006 0 0 6.1 29.6 59.6 89.5 96.4 100
2007 0 0.4 5.7 20.8 60.4 83.5 96 100
2008 0 0.5 4 24.6 48.3 84.4 94.7 98.7
2009 0 0 6 28 66 85 97 100
2010 0 0.2 1.5 22.8 47 77.4 90.2 95.5
2011 0 0 2.2 20.7 50.4 73.7 90.6 95.6
2012 0.2 0 1.5 10.8 43.9 76.1 90.8 96.4
2013 0 0 0.6 10.6 41.8 70.6 89.8 96.9
2014 0 0 1.9 14.1 45.9 76 92 97.5
2015 0 0.2 0.2 7.9 27 60.8 83.4 93.7
2016 0 0 0.2 5.2 22.4 44.1 74.8 92.5
2017* 0 0 0.8 6.3 20.8 51.6 80.4 98.6
2018 0 0.5 2.5 23.6 53.9 79.4 92.5 96.0
2019** 0 0 4.5 11.9 56.4 91.8 95.1 100
2020** 0 0.4 1.7 15.8 43.8 71.2 74.9 84.9
2021** 0 0 2.7 16.1 44.1 72.2 87.1 88.1
2022** 0 0 0.8 11.6 59.7 72.6 80.4 96.2
2023** 0 0 0.3 12.3 50.9 84.3 92.6 97.5
2024** 0 0 1.4 10.2 32.5 74.8 97.4 100
*Not used in inputs (instead ratios presented in WD 10, 2017 used for further calculations) **Not used in inputs (instead ratios presented in WD 15, 2019 used for further calculations)
Table 3.10. Northeast Arctic COD. Basis for maturity ogives (percent) used in the assessment. Norwegian and Russian data.
Norway                
  Percentage mature
  Age
Year 3 4 5 6 7 8 9 10
1985 0.31 1.36 8.94 38.33 51.27 85.13 100 79.2
1986 2.92 7 7.85 18.85 49.72 66.52 35.59 80.09
1987 0 0.07 4.49 12.42 16.28 31.23 19.32  
1988 0 2.35 6.16 40.54 53.63 45.36 100 100
1989 1.52 0.67 3.88 30.65 70.36 82.02 100 100
1990 1.52 0.67 4.18 22 57.45 80.95 100 100
1991 0.1 3.4 13.93 38.03 75.52 90.12 95.39 100
1992 0.22 1.85 21.04 52.83 86.95 96.52 99.83 100
1993 0 2.6 10.37 52.6 84.8 97.25 99.3 99.73
1994 0.51 0.33 15.78 36.92 62.84 88.44 97.56 100
1995 0 0.62 8.19 51.48 63.75 81.11 98.01 99.34
1996 0.03 0 2.82 29.56 70.22 82.06 100 100
1997 0 0 1.48 17.91 73.31 93.01 99.12 100
1998 0.12 0.68 3.17 15.42 47.31 75.73 94.3 100
1999 0.42 0.16 1.6 27.46 70.48 94.57 98.99 100
2000 0 0.11 8.15 30.23 77.3 81.95 100 100
2001 0.49 0.51 9.03 43.81 62.52 74.36 94.13 100
2002 0.27 0.73 5.94 43.22 68.4 85.31 92.52 100
2003 0.02 0.18 6.5 35.97 68.56 87.97 96.3 100
2004 0.24 1.36 10.23 54.56 81.84 90.94 98.76 98.91
2005 0 0.27 9 55.16 81.77 93.51 98.03 100
2006 0 0.22 5.92 44.25 69.85 89.89 96.65 100
2007 0.12 0.33 8.7 47.88 84.29 91.68 99.11 100
2008 0 0.27 9.27 34.13 61.39 88.04 91.17 100
2009 0 0 9 46 85 86 98 99
2010 0 0.36 7.5 41.75 67.7 90.1 95.29 98.55
2011 0 0.2 5.2 48 77.7 89.7 97.3 97.2
2012 0 0 7.7 32.2 67.5 81 90.9 96.3
2013 0 0.3 1 20.2 55.3 80 91.8 99.3
2014 0 0.4 2 13.3 56.7 85 93.8 98.7
2015 0 0 1.9 10.9 29.2 79.1 93.1 99.6
2016 0.07 0.2 1.0 6.4 28.5 71.3 86.1 98.6
2017 0 0.2 0.5 18 54.8 81.4 95.9 100
2018 0 0.1 3.0 16.2 38.3 61.0 93.7 98.9
2019 0 0.4 4.0 24.0 68.6 93.2 96.7 99.8
2020 0 0.44 3.18 13.68 42.51 80.06 91.18 94.03
2021 0.28 0.25 0.79 17.11 43.21 68.80 90.75 98.63
2022 1.55 0 1.19 9.54 44.22 70.17 77.19 98.50
2023 0.80 2.10 2.29 8.89 49.84 80.60 94.93 94.05
2024 0.00 0.30 1.08 10.98 37.92 73.88 96.51 99.23

SAM Wed May 29 15:23:46 2024

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp
1946 0 0 0.01 0.03 0.06 0.11 0.18 0.44 0.65 0.86 0.96 0.96 1
1947 0 0 0.01 0.03 0.06 0.13 0.16 0.42 0.75 0.91 0.95 1 1
1948 0 0 0.01 0.03 0.07 0.13 0.25 0.47 0.73 0.91 0.97 1 1
1949 0 0 0.01 0.03 0.09 0.17 0.29 0.54 0.79 0.88 0.97 1 1
1950 0 0 0.01 0.03 0.09 0.23 0.35 0.52 0.79 0.95 0.97 1 1
1951 0 0 0.01 0.03 0.1 0.24 0.4 0.58 0.72 0.85 0.96 1 1
1952 0 0 0.01 0.03 0.08 0.22 0.41 0.63 0.82 0.92 0.97 1 1
1953 0 0 0.01 0.03 0.07 0.19 0.4 0.64 0.84 0.94 0.97 1 1
1954 0 0 0.01 0.03 0.08 0.16 0.37 0.68 0.87 0.93 0.96 1 1
1955 0 0 0.01 0.03 0.07 0.13 0.26 0.53 0.83 0.92 0.97 1 1
1956 0 0 0.01 0.03 0.06 0.12 0.14 0.41 0.67 0.91 0.96 1 1
1957 0 0 0.01 0.03 0.06 0.09 0.12 0.22 0.6 0.82 0.97 1 1
1958 0 0 0.01 0.03 0.06 0.1 0.1 0.3 0.5 0.82 0.97 1 1
1959 0 0 0.01 0.04 0.12 0.34 0.49 0.67 0.84 0.87 1 1 1
1960 0 0.01 0.03 0.06 0.1 0.19 0.45 0.69 0.77 0.85 0.99 1 1
1961 0 0 0.01 0.06 0.12 0.31 0.65 0.91 0.98 0.98 1 0.96 1
1962 0 0 0.01 0.05 0.15 0.34 0.61 0.81 0.92 0.97 1 0.932 1
1963 0 0.01 0.01 0.03 0.07 0.28 0.42 0.81 0.98 0.98 1 0.966 1
1964 0 0 0 0.03 0.13 0.37 0.66 0.89 0.95 0.99 1 1 1
1965 0 0 0 0.01 0.06 0.2 0.55 0.73 0.99 0.98 1 1 1
1966 0 0 0.01 0.02 0.06 0.22 0.35 0.74 0.94 0.94 1 1 1
1967 0 0 0 0.03 0.07 0.14 0.38 0.64 0.89 0.9 1 1 1
1968 0 0 0.03 0.05 0.09 0.19 0.39 0.58 0.82 1 1 1 1
1969 0 0 0 0.02 0.04 0.12 0.34 0.55 0.74 0.95 1 1 1
1970 0 0.01 0 0.01 0.07 0.23 0.58 0.81 0.89 0.91 1 1 1
1971 0 0 0.01 0.05 0.11 0.3 0.59 0.79 0.86 0.88 1 1 1
1972 0.01 0.02 0.02 0.01 0.1 0.34 0.64 0.81 0.94 1 1 1 1
1973 0 0 0 0.02 0.16 0.53 0.81 0.92 0.95 0.98 1 1 1
1974 0 0 0 0.01 0.03 0.21 0.5 0.96 1 0.96 1 1 1
1975 0 0 0.01 0.02 0.09 0.21 0.56 0.78 0.79 0.95 1 1 1
1976 0 0 0 0.05 0.12 0.29 0.45 0.84 0.83 1 0.9 1 1
1977 0 0 0.02 0.08 0.26 0.54 0.76 0.87 0.93 0.94 0.9 1 1
1978 0 0 0 0.02 0.13 0.44 0.71 0.77 0.81 0.89 0.8 1 1
1979 0 0 0 0.03 0.13 0.39 0.77 0.89 0.83 0.78 0.9 1 1
1980 0 0 0 0.02 0.13 0.35 0.65 0.82 1 0.9 0.9 1 1
1981 0 0 0.02 0.07 0.2 0.54 0.8 0.97 1 1 1 1 1
1982 0 0.05 0.1 0.34 0.65 0.82 0.92 1 1 1 1 1 1
1983 0.01 0.08 0.1 0.3 0.73 0.88 0.97 1 1 1 1 1 1
1984 0 0.05 0.18 0.31 0.56 0.9 0.99 1 1 1 1 1 1
1985 0 0.01 0.09 0.36 0.55 0.85 0.96 0.9 1 1 1 1 1
1986 0 0.05 0.08 0.19 0.53 0.71 0.62 0.9 1 1 1 1 1
1987 0 0.01 0.07 0.18 0.22 0.46 0.5 0.75 1 1 1 1 1
1988 0 0.02 0.05 0.33 0.53 0.62 1 1 1 1 1 1 1
1989 0.008 0.003 0.029 0.228 0.547 0.705 0.915 1 1 1 1 1 1
1990 0.008 0.013 0.051 0.21 0.522 0.715 0.905 0.975 1 1 1 1 1
1991 0.001 0.032 0.075 0.305 0.708 0.861 0.957 1 1 1 1 1 1
1992 0.001 0.014 0.145 0.419 0.8 0.943 0.974 1 1 1 1 1 1
1993 0 0.028 0.087 0.368 0.704 0.931 0.972 0.994 1 1 1 1 1
1994 0 0.005 0.119 0.336 0.583 0.876 0.965 0.99 1 1 1 1 1
1995 0 0.005 0.06 0.373 0.614 0.748 0.955 0.98 1 1 1 1 1
1996 0 0 0.016 0.252 0.619 0.817 0.975 1 1 1 1 1 1
1997 0 0 0.014 0.14 0.597 0.842 0.95 0.967 1 1 1 1 1
1998 0 0.005 0.031 0.168 0.468 0.828 0.956 0.98 1 1 1 1 1
1999 0 0.001 0.014 0.17 0.506 0.841 0.961 1 1 1 1 1 1
2000 0 0 0.066 0.261 0.699 0.872 0.978 1 1 1 1 1 1
2001 0.001 0.006 0.069 0.378 0.646 0.851 0.955 1 1 1 1 1 1
2002 0.001 0.015 0.085 0.412 0.695 0.846 0.97 1 1 1 1 1 1
2003 0.001 0 0.089 0.331 0.662 0.882 0.96 1 1 1 1 1 1
2004 0 0.009 0.092 0.438 0.728 0.883 0.973 0.974 1 1 1 1 1
2005 0 0.003 0.066 0.366 0.72 0.897 0.971 0.991 1 1 1 1 1
2006 0 0.015 0.061 0.367 0.633 0.907 0.961 1 1 1 1 1 1
2007 0 0.007 0.076 0.37 0.719 0.884 0.977 1 1 1 1 1 1
2008 0.005 0.008 0.082 0.309 0.539 0.869 0.928 0.994 1 1 1 1 1
2009 0 0 0.081 0.362 0.745 0.859 0.978 0.997 0.994 1 1 1 1
2010 0.005 0.006 0.06 0.335 0.552 0.838 0.931 0.971 0.983 1 1 1 1
2011 0 0 0.04 0.339 0.644 0.798 0.932 0.963 0.991 1 1 1 1
2012 0.001 0 0.058 0.209 0.544 0.799 0.93 0.967 0.99 1 1 1 1
2013 0 0 0.01 0.156 0.482 0.763 0.913 0.982 0.985 1 1 1 1
2014 0 0 0.025 0.137 0.516 0.806 0.935 0.984 0.996 1 1 1 1
2015 0 0.001 0.004 0.074 0.282 0.681 0.891 0.963 0.984 1 1 1 1
2016 0 0 0.002 0.057 0.256 0.569 0.832 0.955 0.984 1 1 1 1
2017 0 0.018 0.003 0.148 0.463 0.749 0.931 0.99 1 1 1 1 1
2018 0 0.003 0.028 0.207 0.478 0.731 0.916 0.971 1 1 1 1 1
2019 0 0 0.01 0.126 0.466 0.842 0.942 0.968 0.996 1 1 1 1
2020 0 0 0.014 0.112 0.356 0.775 0.904 0.955 1 1 1 1 1
2021 0.002 0.002 0.006 0.14 0.386 0.657 0.893 0.974 0.959 1 1 1 1
2022 0.014 0 0.01 0.079 0.402 0.674 0.756 0.975 1 1 1 1 1
2023 0.007 0.02 0.019 0.074 0.454 0.774 0.93 0.931 1 1 1 1 1
2024 0 0.003 0.009 0.091 0.345 0.709 0.946 0.982 1 1 1 1 1
Table 3.11. Northeast Arctic cod. Proportion mature-at-age



Year/age 0 1 2 3 4 5 6
1984 0.000 444.692 22.438 0.216 0.000 0.000 0.000
1985 1627.802 354.039 71.711 0.198 0.000 0.000 0.000
1986 69.080 1114.780 343.699 87.608 0.000 0.000 0.000
1987 649.421 194.012 325.201 14.392 0.000 0.000 0.000
1988 32.172 485.301 26.482 1.791 0.000 0.000 0.000
1989 953.718 142.813 0.000 0.000 0.000 0.000 0.000
1990 0.000 110.169 23.524 0.000 0.000 0.000 0.000
1991 118.095 138.911 182.399 1.621 0.000 0.000 0.000
1992 3148.272 894.249 143.699 4.190 0.000 0.000 0.000
1993 3860.477 18251.786 479.661 46.391 1.306 0.420 0.000
1994 7963.520 7018.563 648.501 129.613 49.590 7.864 0.409
1995 8174.708 14866.757 759.039 211.213 67.018 3.730 0.222
1996 10170.629 21688.051 1473.363 136.550 52.811 18.502 1.070
1997 3069.149 17614.488 1897.232 165.961 15.751 1.218 0.220
1998 92.182 5690.457 577.717 204.732 23.508 1.459 0.467
1999 635.509 2104.161 303.649 50.828 4.193 0.004 0.000
2000 1912.370 2547.861 188.046 38.319 13.963 3.834 0.042
2001 94.476 2395.845 114.635 23.795 11.590 1.786 0.909
2002 7560.920 456.443 404.266 41.245 5.290 0.801 0.017
2003 5396.707 4104.542 107.603 24.088 0.000 0.000 0.000
2004 6482.152 2399.712 566.564 20.340 10.338 1.294 0.221
2005 2473.242 3030.902 133.121 79.648 4.494 5.462 0.509
2006 3312.722 2121.951 150.212 6.219 2.007 0.074 0.000
2007 2298.412 1150.968 187.898 73.386 3.354 0.123 0.000
2008 14416.448 704.125 84.869 95.674 31.459 4.145 0.000
2009 9627.376 7323.184 142.831 65.586 20.246 5.023 0.214
2010 4171.341 7153.213 300.278 53.225 27.346 16.245 2.153
2011 12528.280 4410.681 449.948 171.817 39.717 10.334 4.959
2012 21032.804 11923.910 1014.296 100.801 30.171 4.260 0.000
2013 26235.707 4758.523 1539.876 170.857 16.368 7.232 1.090
2014 35801.890 6042.223 721.071 189.971 51.590 4.999 0.061
2015 1524.789 10457.642 303.122 66.519 37.821 15.951 1.571
2016 11812.914 2514.074 497.623 11.528 17.665 25.755 6.078
2017 21105.989 1559.950 380.932 114.241 7.800 4.153 2.843
2018 7183.336 13321.450 272.179 35.096 2.189 0.263 0.000
2019 826.561 8344.350 824.307 52.598 5.557 0.018 0.000
2020 3143.143 2501.133 335.946 146.024 42.186 10.364 0.537
2021 23357.280 1560.840 233.110 71.256 22.308 11.927 1.408
2022 9582.112 4408.346 281.233 12.490 1.273 0.058 0.000
2023 1878.393 1732.112 192.755 43.173 0.706 0.017 0.000
Table 3.12. The Northeast Arctic cod stock's consumption of cod in million individuals

Table 3.13. Northeast Arctic COD. Tuning data

104

FLT15_I: NorBarTrSur_I

1981 2024

1 1 0.085 0.189

3 12

1 1640 2330 4000 3840 480 100 30 NA NA NA

1 2830 2770 2360 1550 1600 140 20 NA NA NA

1 2495 5234 4333 1696 582 321 97 NA NA NA

1 9749 2828 2144 1174 407 40 8 NA NA NA

1 16679 12598 1992 767 334 21 7 NA NA NA

1 80500 14393 6414 830 191 34 4 NA NA NA

1 24038 39115 5435 1570 200 45 3 NA NA NA

1 14803 8049 17331 2048 358 53 3 NA NA NA

1 4636 7586 3779 9019 982 94 10 NA NA NA

1 2835 3487 3459 2056 2723 161 38 NA NA NA

1 4585 3367 2565 2149 1215 1267 61 NA NA NA

1 15826 5771 1782 1283 767 429 272 NA NA NA

1 27389 14013 7248 1583 624 389 223 NA NA NA

1 29392 30704 15333 4572 795 261 148 55 55 13

1 28284 24236 25101 7642 1798 242 107 50 61 19

1 16308 11743 13859 10888 2443 264 37 17 12 16

1 31799 6844 7426 5999 2667 485 64 91 8 NA

1 35510 16694 3167 2615 1752 816 79 52 4 4

1 18848 18075 6139 1271 681 514 101 26 2 6

1 24581 13003 11173 2675 456 184 121 33 10 5

1 18279 19511 8290 3796 945 117 44 19 4 1

1 11836 13756 10895 4579 1440 220 32 18 5 2

1 37670 12631 9393 6688 1750 467 102 17 4 4

1 6388 18462 5346 4324 3059 685 165 28 7 2

1 24888 5506 10297 2238 1636 381 92 30 4 10

1 11649 11538 2832 4342 1372 524 136 24 18 18

1 36113 12773 6851 1365 2360 682 230 41 11 10

1 19437 30059 11190 4024 1734 811 179 36 3 3

1 12628 19670 22023 6069 1790 902 524 51 17 7

1 3681 11425 15480 14450 3956 1124 367 160 58 12

1 8540 5037 12970 13866 10351 1637 436 120 82 39

1 7572 6459 3371 9069 13258 4861 902 226 88 111

1 6884 11409 6318 4043 6454 7638 3352 222 287 84

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

FLT15_II: NorBarTrSur_II

2014 2024

1 1 0.085 0.189

3 12

1 22685 9379 8859 5639 3274 5305 3619 981 101 120

1 14407 22825 14729 11353 7443 2922 5351 1808 338 98

1 9937 13548 18831 11347 7233 2856 1317 1606 677 180

1 17925 6215 8454 9016 3782 2633 818 326 261 451

1 13941 18478 6181 6417 7388 2588 928 587 129 419

1 28157 17915 22190 7965 3296 3831 815 262 54 70

1 23773 16024 13156 11488 4983 2426 2044 453 166 243

1 11150 11935 11231 5428 3798 1357 727 353 125 103

1 5198 8868 8660 6651 4460 3042 570 229 208 255

1 4121 3982 4652 4317 3224 1426 749 158 34 35

1 19871 6331 3621 2996 2822 1615 890 268 37 20

FLT16: NorBarLofAcSur

1985 2024

1 1 0.085 0.26

3 12

1 1530 1416 204 151 157 33 13 10 5 NA

1 4996 1343 684 116 77 31 3 NA 4 NA

1 628 2049 502 174 14 30 7 NA NA NA

1 504 355 578 109 40 3 0 1 NA NA

1 170 344 214 670 166 32 5 2 NA NA

1 148 206 262 269 668 73 6 3 NA NA

1 502 346 293 339 367 500 37 2 2 NA

1 1765 658 215 184 284 254 824 43 17 NA

1 3572 1911 1131 354 255 252 277 442 49 NA

1 3239 3745 2293 961 234 118 103 42 187 29

1 1377 1395 2036 1016 281 47 45 29 26 81

1 994 896 1128 974 462 59 11 4 9 15

1 1586 442 503 459 510 215 23 7 1 8

1 3912 1898 449 415 349 271 51 10 2 1

1 1476 1303 523 139 118 187 99 10 2 1

1 2948 1673 1492 546 146 69 50 13 6 2

1 1774 1606 851 621 191 27 8 6 3 1

1 614 1062 1011 713 366 94 12 8 6 0

1 3067 1168 1271 1461 677 235 38 4 1 2

1 334 852 349 456 480 217 88 24 2 7

1 1250 333 693 341 438 180 75 18 1 3

1 648 538 186 420 176 159 87 23 3 10

1 585 304 308 129 466 151 80 33 9 4

1 1999 2887 1166 789 248 352 55 28 17 7

1 1078 1825 1415 560 415 128 266 36 17 4

1 228 880 1614 1750 618 314 108 125 40 29

1 404 283 674 1595 2727 645 233 68 75 9

1 828 494 344 895 2266 1335 257 104 38 28

1 606 845 724 541 1336 2338 1617 215 111 88

1 2869 1242 1115 777 553 1490 1739 980 146 105

1 1387 2356 1300 1442 964 498 969 686 325 127

1 563 769 1199 664 594 409 356 565 344 286

1 1115 424 444 742 486 484 268 167 146 230

1 1090 1499 540 584 775 456 193 141 61 137

1 2036 1254 1446 639 493 739 273 218 65 111

1 1173 1173 819 943 506 509 495 195 84 80

1 649 591 558 402 369 163 114 143 82 34

1 294 530 570 504 476 345 116 68 53 39

1 287 265 336 346 278 183 135 32 17 15

1 1507 510 299 286 304 265 185 59 11 2

FLT18: RusSweptArea

1982 2024

1 1 0.9 1

3 12

1 1413 1525 721 198 551 174 37 19 15.1 1.5

1 520 642 506 358 179 252 94 NA NA NA

1 1189 700 489 357 154 69 61 17 14.6 7.4

1 1188 1592 1068 365 165 37 8 16 1.5 20.9

1 1622 1532 1493 481 189 42 2 6 NA NA

1 557 3076 900 701 184 60 25 4 0.7 3.3

1 993 938 2879 583 260 47 24 NA NA NA

1 490 978 1062 1454 1167 299 112 47 18.5 11.7

1 167 487 627 972 1538 673 153 49 9.1 1.7

1 1077 484 532 583 685 747 98 14 2.6 NA

1 675 308 239 273 218 175 25 25 4.0 0.1

1 1604 1135 681 416 354 87 3 7 0.6 0.7

1 1363 1309 1019 354 128 49 21 11 5.7 2.2

1 589 1065 1395 849 251 83 19 18 9.5 5.8

1 733 784 1035 773 348 132 19 5 12.0 1.6

1 1342 835 613 602 348 116 32 30 NA NA

1 2028 1363 788 470 259 130 48 5 NA 0.9

1 1587 2072 980 301 123 94 42 4 NA NA

1 1839 1286 1786 773 114 52 23 9 3.9 0.4

1 1224 1557 1290 1061 304 50 14 5 25.4 13.1

1 980 1473 1473 896 600 182 29 8 0.8 0.5

1 1246 1057 1166 1203 535 241 40 9 3.1 1.1

1 329 1576 880 1111 776 279 93 23 3.6 2.5

1 1408 631 1832 744 605 244 88 28 6.4 1.1

1 927 1613 777 1801 662 342 161 43 17.5 7.4

1 2579 1617 1903 846 1525 553 226 86 49.0 18.5

1 2203 3088 1635 1472 830 863 291 115 33.0 19.0

1 974 2317 3687 2016 1175 620 413 205 65.0 41.0

1 334 1070 2505 3715 1817 789 395 299 155.9 75.2

1 882 508 1432 3065 3300 917 439 176 175.5 105.4

1 815 1114 839 2122 3358 1878 432 195 45.7 76.3

1 747 1174 1177 884 2349 3132 1367 306 92.4 98.5

1 1399 1368 1725 1483 1111 1929 1297 383 93.4 55.1

1 657 1583 1742 1932 1610 925 1158 761 241.6 113.6

1 NA NA NA NA NA NA NA NA NA NA

1 1456 884 1063 1952 1231 567 266 120 119.8 103.8

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

FLT007: Ecosystem_2018corr

2004 2023

1 1 0.65 0.75

3 12

1 1477 4215 1502 798 402 101 22 5 1.3 2

1 2166 558 1009 280 156 57 12 5 1.2 0.5

1 1861 2056 599 698 176 81 26 6 2.5 0.4

1 5862 1592 791 246 269 60 22 9 1.5 2.4

1 6526 4834 1323 511 128 175 33 9 2.3 3.9

1 2023 2806 2896 1017 319 127 73 26 8.1 5.1

1 568 1770 3972 4249 1427 385 105 68 15.9 6.2

1 1236 1015 2402 3004 1784 323 77 18 13.4 8.7

1 2291 1464 700 1508 1652 845 127 44 15.5 20.8

1 2491 1836 1257 632 1182 1302 538 91 33.2 24.6

1 NA NA NA NA NA NA NA NA NA NA

1 1744 2252 1413 726 486 262 353 266 78.7 27

1 772 937 1216 701 444 272 138 132 54.2 30.2

1 3750 1415 1049 1209 626 280 112 64 44.5 71.7

1 NA NA NA NA NA NA NA NA NA NA

1 4166 2323 2151 766 422 444 161 49 21.9 29.5

1 1395 1356 934 829 308 142 107 31 10.3 14.8

1 847 998 811 457 336 124 47 50 23.8 16.8

1 NA NA NA NA NA NA NA NA NA NA

1 699 401 571 527 450 233 93 22 8.0 8.9

Table 3.14. Parameters settings used in SAM run

# Where a matrix is specified rows corresponds to fleets and columns to ages.

# Same number indicates same parameter used

# Numbers (integers) starts from zero and must be consecutive

#

$minAge

# The minimium age class in the assessment

3

$maxAge

# The maximum age class in the assessment

15

$maxAgePlusGroup

# Is last age group considered a plus group (1 yes, or 0 no).

1 1 1 1 1 1

$keyLogFsta

# Coupling of the fishing mortality states (nomally only first row is used).

0 1 2 3 4 5 6 7 8 9 10 11 11

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

$corFlag

# Correlation of fishing mortality across ages (0 independent, 1 compound symmetry, or 2 AR(1)

0

$keyLogFpar

# Coupling of the survey catchability parameters (nomally first row is not used, as that is covered by fishing mortality).

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

0 1 2 3 4 5 6 7 8 8 -1 -1 -1

9 10 11 12 13 14 15 16 17 17 -1 -1 -1

18 19 20 21 22 23 24 25 26 26 -1 -1 -1

27 28 29 30 31 32 33 34 35 35 -1 -1 -1

36 37 38 39 40 41 42 43 44 44 -1 -1 -1

$keyQpow

# Density dependent catchability power parameters (if any).

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

$keyVarF

# Coupling of process variance parameters for log(F)-process (nomally only first row is used)

0 1 1 1 1 1 1 1 1 1 1 1 1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

$keyVarLogN

# Coupling of process variance parameters for log(N)-process

0 1 1 1 1 1 1 1 1 1 1 1 1

$keyVarObs

# Coupling of the variance parameters for the observations.

0 1 2 2 2 2 2 2 3 3 4 4 4

5 6 6 6 6 7 7 7 7 7 -1 -1 -1

5 6 6 6 6 7 7 7 7 7 -1 -1 -1

8 8 8 8 8 8 9 9 9 9 -1 -1 -1

10 10 10 10 10 10 11 11 11 11 -1 -1 -1

12 12 12 12 12 12 12 12 12 12 -1 -1 -1

$obsCorStruct

# Covariance structure for each fleet ("ID" independent, "AR" AR(1), or "US" for unstructured). | Possible values are: "ID" "AR" "US"

"ID" "AR" "AR" "AR" "AR" "AR"

$keyCorObs

# Coupling of correlation parameters can only be specified if the AR(1) structure is chosen above.

# NA's indicate where correlation parameters can be specified (-1 where they cannot).

#3-4 4-5 5-6 6-7 7-8 8-9 9-10 10-11 11-12 12-13 13-14 14-15

NA NA NA NA NA NA NA NA NA NA NA NA

0 0 0 0 1 1 2 2 3 -1 -1 -1

0 0 0 0 1 1 2 2 3 -1 -1 -1

4 4 4 5 6 6 6 7 8 -1 -1 -1

9 9 9 9 9 10 10 10 11 -1 -1 -1

12 12 12 13 13 13 14 14 15 -1 -1 -1

$stockRecruitmentModelCode

# Stock recruitment code (0 for plain random walk, 1 for Ricker, and 2 for Beverton-Holt).

0

$noScaledYears

# Number of years where catch scaling is applied.

0

$keyScaledYears

# A vector of the years where catch scaling is applied.

$keyParScaledYA

# A matrix specifying the couplings of scale parameters (nrow = no scaled years, ncols = no ages).

$fbarRange

# lowest and higest age included in Fbar

5 10

$keyBiomassTreat

# To be defined only if a biomass survey is used (0 SSB index, 1 catch index, and 2 FSB index).

-1 -1 -1 -1 -1 -1

$obsLikelihoodFlag

# Option for observational likelihood | Possible values are: "LN" "ALN"

"LN" "LN" "LN" "LN" "LN" "LN"

$fixVarToWeight

# If weight attribute is supplied for observations this option sets the treatment (0 relative weight, 1 fix variance to weight).

0

SAM May 29 15:23:46 2024

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp FBAR5-10
1946 0.003 0.020 0.069 0.137 0.270 0.248 0.379 0.396 0.572 0.563 0.626 0.648 0.648 0.250
1947 0.002 0.021 0.090 0.187 0.387 0.294 0.450 0.446 0.692 0.635 0.689 0.781 0.781 0.309
1948 0.001 0.021 0.095 0.220 0.464 0.346 0.512 0.450 0.713 0.695 0.741 0.922 0.922 0.348
1949 0.002 0.030 0.138 0.301 0.473 0.367 0.459 0.476 0.771 0.752 0.788 1.028 1.028 0.369
1950 0.002 0.043 0.163 0.314 0.436 0.363 0.481 0.538 0.838 0.855 0.816 1.149 1.149 0.382
1951 0.010 0.078 0.231 0.343 0.445 0.392 0.496 0.567 0.781 0.866 0.841 1.197 1.197 0.413
1952 0.014 0.103 0.277 0.430 0.475 0.408 0.523 0.639 0.843 0.920 0.844 1.199 1.199 0.459
1953 0.021 0.112 0.251 0.360 0.402 0.373 0.473 0.612 0.813 0.823 0.799 1.021 1.021 0.412
1954 0.017 0.116 0.268 0.384 0.424 0.357 0.489 0.707 0.831 0.823 0.790 0.929 0.929 0.438
1955 0.015 0.108 0.295 0.494 0.497 0.509 0.565 0.751 0.895 0.866 0.790 0.862 0.862 0.518
1956 0.018 0.122 0.349 0.581 0.559 0.598 0.589 0.740 0.892 0.986 0.824 0.804 0.804 0.570
1957 0.020 0.137 0.291 0.529 0.548 0.588 0.536 0.674 0.880 0.914 0.821 0.719 0.719 0.528
1958 0.036 0.181 0.359 0.543 0.540 0.511 0.508 0.692 0.829 0.879 0.721 0.630 0.630 0.526
1959 0.036 0.203 0.425 0.524 0.526 0.527 0.552 0.721 0.786 0.801 0.708 0.644 0.644 0.546
1960 0.037 0.212 0.406 0.510 0.495 0.546 0.523 0.755 0.854 0.802 0.698 0.711 0.711 0.539
1961 0.039 0.225 0.491 0.576 0.546 0.644 0.696 0.849 0.897 0.863 0.742 0.748 0.748 0.634
1962 0.037 0.224 0.584 0.750 0.633 0.683 0.796 1.009 0.935 0.845 0.775 0.738 0.738 0.743
1963 0.023 0.194 0.584 0.800 0.759 0.773 0.893 1.083 1.080 0.851 0.802 0.735 0.735 0.815
1964 0.018 0.159 0.412 0.554 0.585 0.700 0.934 0.883 0.978 0.802 0.881 0.755 0.755 0.678
1965 0.023 0.143 0.364 0.459 0.472 0.589 0.785 0.798 0.805 0.670 0.891 0.758 0.758 0.578
1966 0.031 0.140 0.286 0.388 0.469 0.600 0.752 0.790 0.713 0.655 0.799 0.675 0.675 0.548
1967 0.029 0.155 0.265 0.329 0.463 0.639 0.828 0.811 0.771 0.665 0.792 0.610 0.610 0.556
1968 0.025 0.176 0.356 0.433 0.495 0.633 0.847 0.832 0.747 0.600 0.799 0.631 0.631 0.599
1969 0.026 0.182 0.404 0.482 0.630 0.811 1.006 0.922 0.835 0.631 0.757 0.620 0.620 0.709
1970 0.034 0.164 0.376 0.468 0.589 0.824 0.996 0.933 0.796 0.577 0.713 0.631 0.631 0.698
1971 0.029 0.155 0.306 0.355 0.505 0.810 0.981 0.920 0.801 0.604 0.691 0.617 0.617 0.646
1972 0.049 0.183 0.333 0.402 0.427 0.719 1.058 1.013 0.895 0.652 0.745 0.636 0.636 0.659
1973 0.139 0.226 0.386 0.439 0.459 0.698 0.921 0.861 0.845 0.673 0.757 0.621 0.621 0.627
1974 0.165 0.296 0.481 0.520 0.509 0.622 0.667 0.870 0.910 0.714 0.892 0.629 0.629 0.611
1975 0.113 0.277 0.507 0.622 0.641 0.729 0.721 0.728 0.937 0.778 0.952 0.599 0.599 0.658
1976 0.146 0.307 0.530 0.615 0.687 0.852 0.874 0.672 0.796 0.821 0.942 0.676 0.676 0.705
1977 0.131 0.335 0.634 0.678 0.707 0.901 1.128 0.857 0.894 0.811 1.052 0.810 0.810 0.818
1978 0.114 0.253 0.571 0.737 0.767 0.893 1.219 0.946 1.303 1.008 1.198 0.916 0.916 0.856
1979 0.055 0.202 0.410 0.622 0.711 0.804 1.094 0.992 1.295 1.095 1.124 1.009 1.009 0.772
1980 0.037 0.158 0.345 0.628 0.723 0.809 0.998 1.057 1.230 0.997 1.161 0.907 0.907 0.760
1981 0.031 0.141 0.283 0.581 0.784 0.973 1.159 0.976 1.071 0.937 1.044 0.836 0.836 0.793
1982 0.041 0.158 0.286 0.641 0.841 0.919 1.132 0.827 0.823 0.925 0.866 0.823 0.823 0.774
1983 0.027 0.164 0.300 0.549 0.903 1.080 1.068 0.848 0.714 0.726 0.802 0.866 0.866 0.791
1984 0.023 0.156 0.331 0.582 1.063 1.167 1.167 0.899 0.747 0.702 0.671 0.892 0.892 0.868
1985 0.039 0.162 0.390 0.667 0.945 1.149 0.930 0.779 0.758 0.655 0.594 0.950 0.950 0.810
1986 0.031 0.171 0.456 0.766 0.907 1.144 0.926 1.042 0.887 0.852 0.587 1.072 1.072 0.874
1987 0.039 0.155 0.470 0.828 1.013 1.117 0.893 1.249 0.976 1.002 0.636 1.255 1.255 0.928
1988 0.035 0.128 0.335 0.637 0.937 1.018 1.027 1.354 0.960 0.916 0.730 1.214 1.214 0.885
1989 0.031 0.107 0.252 0.457 0.644 0.835 0.818 1.001 0.755 0.710 0.697 1.430 1.430 0.668
1990 0.019 0.093 0.178 0.308 0.416 0.500 0.550 0.590 0.654 0.611 0.626 1.311 1.311 0.424
1991 0.020 0.101 0.212 0.343 0.435 0.471 0.505 0.483 0.496 0.593 0.571 1.264 1.264 0.408
1992 0.025 0.114 0.279 0.429 0.528 0.556 0.565 0.562 0.517 0.701 0.541 1.254 1.254 0.487
1993 0.014 0.110 0.315 0.522 0.618 0.658 0.694 0.715 0.690 0.828 0.677 1.226 1.226 0.587
1994 0.012 0.110 0.322 0.596 0.924 0.916 0.875 0.855 0.915 0.935 0.776 1.213 1.213 0.748
1995 0.014 0.117 0.323 0.605 0.932 0.895 0.950 0.924 1.010 0.963 0.854 1.125 1.125 0.772
1996 0.021 0.134 0.353 0.617 0.883 0.939 0.853 1.102 0.961 0.960 0.922 1.032 1.032 0.791
1997 0.022 0.169 0.447 0.684 0.895 1.202 1.128 1.271 1.029 1.018 0.921 0.936 0.936 0.938
1998 0.027 0.182 0.474 0.712 0.852 1.161 1.136 1.317 1.052 0.897 0.830 0.787 0.787 0.942
1999 0.015 0.150 0.464 0.682 0.869 1.101 1.224 1.299 0.956 0.883 0.693 0.697 0.697 0.940
2000 0.009 0.115 0.364 0.587 0.831 1.019 1.109 1.185 0.848 0.902 0.555 0.680 0.680 0.849
2001 0.009 0.096 0.294 0.532 0.755 0.926 0.890 1.051 0.736 0.770 0.444 0.716 0.716 0.741
2002 0.008 0.091 0.276 0.520 0.775 0.887 0.840 0.794 0.628 0.731 0.391 0.679 0.679 0.682
2003 0.010 0.089 0.284 0.473 0.729 0.812 0.776 0.748 0.572 0.633 0.364 0.647 0.647 0.637
2004 0.010 0.090 0.293 0.499 0.770 0.857 0.897 0.952 0.642 0.676 0.345 0.544 0.544 0.711
2005 0.011 0.102 0.318 0.516 0.742 0.869 0.956 0.897 0.677 0.747 0.348 0.491 0.491 0.716
2006 0.016 0.102 0.281 0.441 0.621 0.742 0.811 0.796 0.678 0.773 0.377 0.580 0.580 0.615
2007 0.018 0.091 0.241 0.348 0.451 0.545 0.566 0.542 0.646 0.751 0.389 0.507 0.507 0.449
2008 0.011 0.069 0.162 0.276 0.371 0.450 0.491 0.448 0.593 0.702 0.406 0.422 0.422 0.366
2009 0.010 0.058 0.132 0.221 0.320 0.357 0.464 0.378 0.541 0.757 0.449 0.365 0.365 0.312
2010 0.009 0.049 0.106 0.178 0.284 0.381 0.399 0.429 0.611 0.623 0.516 0.340 0.340 0.296
2011 0.006 0.048 0.105 0.161 0.257 0.356 0.454 0.545 0.577 0.527 0.504 0.282 0.282 0.313
2012 0.006 0.047 0.118 0.161 0.243 0.329 0.426 0.495 0.564 0.490 0.480 0.275 0.275 0.295
2013 0.007 0.048 0.122 0.189 0.271 0.366 0.454 0.530 0.577 0.500 0.466 0.306 0.306 0.322
2014 0.008 0.054 0.142 0.228 0.315 0.396 0.428 0.529 0.613 0.548 0.487 0.333 0.333 0.340
2015 0.010 0.056 0.150 0.269 0.327 0.398 0.371 0.517 0.761 0.624 0.523 0.368 0.368 0.339
2016 0.009 0.053 0.149 0.258 0.344 0.422 0.414 0.568 0.844 0.690 0.584 0.420 0.420 0.359
2017 0.010 0.058 0.154 0.274 0.361 0.483 0.481 0.605 0.920 0.776 0.653 0.464 0.464 0.393
2018 0.012 0.062 0.161 0.271 0.374 0.468 0.529 0.661 0.895 0.865 0.726 0.491 0.491 0.411
2019 0.009 0.066 0.163 0.261 0.385 0.511 0.537 0.717 0.863 0.882 0.744 0.487 0.487 0.429
2020 0.010 0.069 0.176 0.290 0.420 0.541 0.632 0.813 0.930 0.914 0.785 0.480 0.480 0.479
2021 0.013 0.077 0.214 0.358 0.492 0.586 0.756 0.959 0.961 1.047 0.840 0.482 0.482 0.561
2022 0.030 0.098 0.253 0.400 0.491 0.593 0.759 0.998 1.113 1.222 0.899 0.428 0.428 0.582
2023 0.047 0.111 0.250 0.380 0.467 0.608 0.757 1.070 1.125 1.275 0.874 0.386 0.386 0.589
Mean 2021-2023 0.030 0.095 0.239 0.379 0.483 0.596 0.757 1.009 1.066 1.181 0.871 0.432    
Table 3.15. Northeast Arctic cod. Fishing mortality

SAM Wed May 29 15:23:46 2024

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp TOTAL
1946 1130233 675382 371790 171846 78290 84492 227481 80771 36055 30512 18876 8117 1995 2915838
1947 591326 677104 497853 298121 133484 53539 56348 132793 45806 17357 14614 8429 4506 2531281
1948 451445 339052 462772 346442 206762 75339 34926 29934 69636 18419 7644 6064 4961 2053397
1949 632170 292487 264623 354130 229166 103977 42971 16913 15969 28223 7444 2996 3599 1994667
1950 1020622 398481 231051 187664 208610 114842 57067 22806 8657 6118 11057 2743 1937 2271655
1951 2411969 774897 311756 177887 114891 111007 65972 28226 10910 2984 2094 4025 1197 4017815
1952 2316011 1130311 460653 190153 115837 61780 61037 33217 13121 4216 1025 730 1279 4389369
1953 2400790 1111650 638922 245352 91156 60037 33175 28535 13943 4525 1348 356 480 4630268
1954 832049 1380660 708239 387849 137883 49039 34631 17302 12915 5054 1646 496 245 3568009
1955 384305 551413 920908 434179 223694 74977 30566 18096 6941 4691 1835 616 240 2652462
1956 752521 246808 395197 550374 211780 112681 35638 14597 7021 2283 1654 690 298 2331542
1957 1430781 408080 151546 209100 238296 94860 49100 15408 5683 2355 668 595 362 2606833
1958 929342 715310 250138 95854 100423 109358 40982 23275 6428 1912 779 230 380 2274410
1959 1310632 486619 428363 141352 47129 47674 54762 20184 9516 2300 640 318 268 2549758
1960 1473685 625097 253662 208007 69473 23057 22998 25334 8046 3641 862 257 261 2714379
1961 1541584 705041 347642 134399 102625 36293 11320 12024 9808 2789 1371 360 209 2905465
1962 1249285 808614 390760 168465 64340 49249 15627 4559 4397 3278 943 540 221 2760276
1963 909205 702558 455313 165603 62671 28803 20757 5755 1329 1465 1159 352 300 2355270
1964 473764 412416 370078 179363 54823 21598 10559 6925 1519 351 514 432 257 1532599
1965 880243 251325 259326 200200 83134 23795 8204 3221 2387 451 123 172 266 1712846
1966 1844090 567763 167141 144903 106293 44082 10959 3046 1180 894 192 40 163 2890745
1967 1310906 1270917 397018 106400 80587 55322 20421 4379 1136 491 388 72 82 3248120
1968 182428 1012822 889592 279539 72348 42283 23745 7295 1619 422 206 145 70 2512514
1969 110961 137641 702719 495089 154408 41021 19619 8554 2638 651 194 75 95 1673664
1970 207795 86264 88130 368846 238187 64448 15100 5827 2766 915 281 75 75 1078709
1971 406859 146547 58079 45523 174417 103303 22561 4581 1862 1030 428 113 65 965367
1972 1052424 314048 105485 37358 27304 81802 36135 6969 1528 696 465 181 80 1664473
1973 1711725 752849 212662 63977 21252 15868 32375 9744 1982 500 297 180 114 2823524
1974 566788 1197630 515780 123095 35423 11342 6628 10170 3411 701 207 117 130 2471423
1975 607022 366386 669223 258194 61541 18466 5371 3069 3313 1120 283 68 109 1994166
1976 600127 444290 227174 311819 108450 26025 7500 2269 1297 1004 418 89 82 1730545
1977 371249 412546 272840 112792 137091 43303 8835 2625 1046 522 348 136 73 1363405
1978 625497 247351 218075 112306 47537 55754 14036 2250 896 383 206 99 77 1324467
1979 204057 448135 155349 90795 40819 17643 18406 3268 697 187 115 51 57 979579
1980 131441 156405 301972 87124 39225 16113 6538 5038 981 154 48 31 31 745103
1981 144740 103354 113159 174665 38014 15649 6030 2070 1396 231 47 12 20 599387
1982 182264 125716 83686 63945 81819 15217 4644 1520 640 380 74 13 11 559928
1983 140731 136554 92251 51912 28867 28244 4899 1236 567 229 119 26 9 485643
1984 441833 114911 83614 54196 24638 10635 7704 1353 438 241 94 42 12 739712
1985 528650 384971 82056 45025 24333 6372 2799 1913 438 165 100 41 18 1076880
1986 1361054 402065 243536 46408 19154 7440 1602 1006 751 176 73 46 19 2083332
1987 355144 997896 255127 109493 16420 6841 1792 573 287 255 61 35 19 1743942
1988 331994 237875 592196 118968 32991 5002 1734 627 134 90 73 27 12 1321724
1989 158526 228126 147935 305205 54954 9880 1479 486 126 40 29 27 10 906821
1990 132617 129135 130038 95741 142094 22824 2913 534 137 48 16 11 7 656113
1991 299280 126888 98052 86360 61750 81977 11416 1376 248 55 22 7 4 767434
1992 714113 271783 101122 69263 48817 33853 46269 6025 799 132 25 10 3 1292213
1993 986989 503101 240654 72783 36783 23574 15460 23776 2997 429 57 13 3 1906620
1994 749130 732747 398885 146928 39011 15934 10622 6347 9677 1301 158 24 4 2110769
1995 536724 491918 523726 232006 63182 12460 5307 3422 2194 3172 416 60 7 1874593
1996 400745 302670 335880 283629 104290 19826 4291 1582 1110 615 1001 144 18 1455801
1997 772850 207462 203965 182951 120264 37543 6295 1646 436 337 192 328 47 1534316
1998 1043689 471407 126205 97679 71065 41752 9494 1624 356 130 95 61 119 1863675
1999 622788 597860 262948 62284 32933 26114 11603 2516 343 98 45 33 68 1619632
2000 745072 408625 375066 122272 24448 11238 7407 2640 578 108 33 19 41 1697546
2001 590310 533117 290991 184957 52005 8982 3401 1929 662 198 35 15 25 1666626
2002 374816 429975 368283 186265 82224 20322 3088 1174 561 248 77 18 16 1467067
2003 758231 287940 288182 235679 84483 30267 6729 1123 438 260 95 44 14 1693486
2004 242815 577192 214954 183065 116213 33870 10909 2612 467 219 123 54 25 1382518
2005 692086 186024 407216 136528 94257 39126 11189 3909 812 201 94 76 37 1571555
2006 538831 468194 141276 232695 68654 33902 13517 3337 1298 354 78 57 63 1502255
2007 1255333 439298 305131 89157 119919 30244 12551 4455 1165 544 137 43 57 2258033
2008 1015424 975699 337003 168673 53003 62620 15383 5635 1915 524 206 77 49 2636211
2009 591345 795862 744298 249723 89506 33524 28863 7765 3004 915 218 111 68 2545203
2010 206731 461588 654037 551757 167652 54247 18913 14606 4550 1567 338 117 103 2136206
2011 365681 183969 382561 537521 388162 86085 31244 10587 8000 1981 723 156 128 1996795
2012 510602 279003 148245 317904 405897 220336 44905 15967 5184 3745 963 366 173 1953290
2013 469476 373162 227977 129922 242135 264468 135519 23139 8382 2397 1895 489 349 1879308
2014 849995 356579 299576 183518 102243 169767 146198 65255 11113 3763 1173 974 512 2190667
2015 449183 569220 300617 215625 132543 68126 97324 74461 30171 5100 1749 586 879 1945583
2016 283071 312961 418760 217056 136472 76691 43897 53386 34522 11444 2233 842 834 1592168
2017 760664 236388 227647 288518 146702 79104 41303 24244 23053 12569 4702 1019 892 1846805
2018 486272 528617 187164 160041 186504 86193 40178 21784 10862 7353 4652 1975 960 1722555
2019 622063 361216 384899 149354 91769 107377 46062 19572 9154 3703 2444 1786 1408 1800808
2020 529571 419747 276166 250300 100971 53890 54483 22319 8196 3236 1262 936 1521 1722598
2021 368238 337201 311798 194154 147400 53501 26777 23392 8684 2705 1082 471 1184 1476589
2022 182355 242396 241576 197622 121961 75017 23881 10445 7018 2647 780 384 784 1106866
2023 231028 138420 160897 141401 111521 62875 33940 9225 3171 1805 615 254 595 895748
2024 577881 167206 101584 91913 80106 55649 29258 12898 2596 817 406 208 463 1120984
Table 3.16. Northeast Arctic COD Stock number-at-age (Thous)

SAM Wed May 29 15:23:46 2024

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp
1946 0.490 0.304 0.226 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1947 0.544 0.325 0.231 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1948 0.493 0.305 0.226 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1949 0.434 0.282 0.221 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1950 0.316 0.236 0.210 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1951 0.724 0.394 0.247 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1952 0.715 0.391 0.246 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1953 0.537 0.322 0.230 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1954 0.388 0.264 0.217 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1955 0.406 0.271 0.218 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1956 0.590 0.343 0.235 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1957 0.725 0.395 0.247 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1958 0.562 0.332 0.233 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1959 0.713 0.390 0.246 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1960 0.704 0.387 0.245 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1961 0.609 0.350 0.237 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1962 0.520 0.315 0.229 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1963 0.788 0.419 0.253 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1964 0.603 0.348 0.236 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1965 0.416 0.275 0.219 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1966 0.353 0.251 0.214 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1967 0.271 0.219 0.206 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1968 0.224 0.201 0.202 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1969 0.206 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1970 0.293 0.227 0.208 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1971 0.256 0.213 0.205 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1972 0.323 0.239 0.211 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1973 0.217 0.200 0.201 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1974 0.217 0.200 0.201 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1975 0.232 0.204 0.203 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1976 0.224 0.200 0.202 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1977 0.249 0.210 0.204 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1978 0.234 0.205 0.203 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1979 0.208 0.200 0.201 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1980 0.200 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1981 0.200 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1982 0.200 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1983 0.203 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1984 0.201 0.200 0.219 0.210 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1985 0.204 0.224 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1986 0.270 0.216 0.252 0.231 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1987 0.256 0.236 0.219 0.271 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1988 0.222 0.211 0.242 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1989 0.200 0.230 0.200 0.233 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1990 0.200 0.200 0.207 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1991 0.200 0.200 0.200 0.208 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1992 0.207 0.200 0.200 0.203 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1993 0.241 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1994 0.348 0.261 0.215 0.220 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1995 0.530 0.314 0.227 0.202 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1996 0.524 0.327 0.243 0.217 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1997 0.421 0.269 0.241 0.226 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1998 0.428 0.273 0.218 0.267 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1999 0.264 0.233 0.237 0.223 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2000 0.248 0.212 0.243 0.226 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2001 0.236 0.220 0.200 0.231 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2002 0.278 0.212 0.200 0.224 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2003 0.239 0.200 0.200 0.212 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2004 0.250 0.215 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2005 0.297 0.212 0.215 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2006 0.203 0.228 0.200 0.207 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2007 0.247 0.200 0.247 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2008 0.258 0.213 0.200 0.233 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2009 0.274 0.209 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2010 0.297 0.234 0.207 0.201 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2011 0.424 0.310 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2012 0.378 0.298 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2013 0.392 0.234 0.204 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2014 0.369 0.292 0.212 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2015 0.355 0.259 0.233 0.206 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2016 0.216 0.253 0.261 0.216 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2017 0.390 0.217 0.214 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2018 0.268 0.212 0.200 0.218 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2019 0.293 0.211 0.213 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2020 0.440 0.229 0.200 0.210 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2021 0.430 0.266 0.230 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2022 0.265 0.223 0.215 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
2023 0.332 0.202 0.222 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Table 3.17. Northeast Arctic COD. Natural mortality used in final run

SAM Wed May 29 15:23:46 2024

Year RECRUITS TOTALBIO TOTSPBIO LANDINGS YIELD/SSB FBAR 5-10
1946 1130233 3935180 952985 706000 0.741 0.250
1947 591326 3386475 902641 882017 0.977 0.309
1948 451445 3356715 784654 774295 0.987 0.348
1949 632170 2896946 594887 800122 1.345 0.369
1950 1020622 2795419 535869 731982 1.366 0.382
1951 2411969 3692064 495077 827180 1.671 0.413
1952 2316011 4110119 488765 876795 1.794 0.459
1953 2400790 4090773 412395 695546 1.687 0.412
1954 832049 4197512 408300 826021 2.023 0.438
1955 384305 3536136 327878 1147841 3.501 0.518
1956 752521 3318710 281174 1343068 4.777 0.570
1957 1430781 2814511 212263 792557 3.734 0.528
1958 929342 2357116 205421 769313 3.745 0.526
1959 1310632 2723988 434410 744607 1.714 0.546
1960 1473685 2351587 384829 622042 1.616 0.539
1961 1541584 2346756 386500 783221 2.026 0.634
1962 1249285 2172259 315322 909266 2.884 0.743
1963 909205 2008725 215906 776337 3.596 0.815
1964 473764 1511142 200247 437695 2.186 0.678
1965 880243 1459212 108045 444930 4.118 0.578
1966 1844090 2222881 121054 483711 3.996 0.548
1967 1310906 2735822 128761 572605 4.447 0.556
1968 182428 3282513 222997 1074084 4.817 0.599
1969 110961 2818930 148877 1197226 8.042 0.709
1970 207795 2163000 242004 933246 3.856 0.698
1971 406859 1661055 330344 689048 2.086 0.646
1972 1052424 1615131 353349 565254 1.600 0.659
1973 1711725 2280108 334153 792685 2.372 0.627
1974 566788 2176277 159026 1102433 6.932 0.611
1975 607022 2089076 133536 829377 6.211 0.658
1976 600127 1939165 167187 867463 5.189 0.705
1977 371249 1928027 335946 905301 2.695 0.818
1978 625497 1585938 227795 698715 3.067 0.856
1979 204057 1137294 180383 440538 2.442 0.772
1980 131441 853590 108436 380434 3.508 0.760
1981 144740 966706 161279 399038 2.474 0.793
1982 182264 751168 321325 363730 1.132 0.774
1983 140731 746879 311431 289992 0.931 0.791
1984 441833 830482 243534 277651 1.140 0.868
1985 528650 1000841 195541 307920 1.575 0.810
1986 1361054 1397885 163901 430113 2.624 0.874
1987 355144 1233243 114908 523071 4.552 0.928
1988 331994 1006657 191457 434939 2.272 0.885
1989 158526 956535 237314 332481 1.401 0.668
1990 132617 913000 303355 212000 0.699 0.424
1991 299280 1347064 635806 319158 0.502 0.408
1992 714113 1687381 801872 513234 0.640 0.487
1993 986989 2197863 698491 581611 0.833 0.587
1994 749130 2112773 568725 771086 1.356 0.748
1995 536724 1849957 532870 739999 1.389 0.772
1996 400745 1697388 551369 732228 1.328 0.791
1997 772850 1537459 546260 762403 1.396 0.938
1998 1043689 1350918 386165 592624 1.535 0.942
1999 622788 1199169 280597 484910 1.728 0.940
2000 745072 1223157 255138 414868 1.626 0.849
2001 590310 1477707 383239 426471 1.113 0.741
2002 374816 1594411 520404 535045 1.028 0.682
2003 758231 1682627 570813 551990 0.967 0.637
2004 242815 1568423 664368 606445 0.913 0.711
2005 692086 1516694 576671 641276 1.112 0.716
2006 538831 1539716 579579 537642 0.928 0.615
2007 1255333 1865207 644011 486883 0.756 0.449
2008 1015424 2553066 712366 464171 0.652 0.366
2009 591345 3091745 1001388 523430 0.523 0.312
2010 206731 3328980 1229135 609983 0.496 0.296
2011 365681 3552449 1782709 719830 0.404 0.313
2012 510602 3625094 1997429 727663 0.364 0.295
2013 469476 3695151 2211080 966209 0.437 0.322
2014 849995 3416507 2089429 986449 0.472 0.340
2015 449183 3243403 1676734 864384 0.516 0.339
2016 283071 2822461 1335743 849422 0.636 0.359
2017 760664 2754263 1363003 868276 0.637 0.393
2018 486272 2543558 1226591 778627 0.635 0.411
2019 622063 2421489 1161583 692609 0.596 0.429
2020 529571 2131600 923962 692903 0.750 0.479
2021 368238 1920246 792317 767284 0.968 0.561
2022 182355 1691782 674790 719211 1.066 0.582
2023 231028 1500905 709740 582552 0.821 0.589
Arith. Mean 718954 2193515 566280 673138 2.000 0.596
Table 3.18. Northeast Arctic COD. Summary table
Table 3.19a. Northeast Arctic COD. Input for the short term prediction
 
                 
2024                
Age N M Mat PF PM SWT Sel CWT
3 587000 0.342 0 0 0 0.246 0.030 0.571
4 167206 0.230 0.003 0 0 0.706 0.095 0.987
5 101584 0.222 0.009 0 0 1.075 0.239 1.573
6 91913 0.200 0.091 0 0 1.803 0.379 2.296
7 80106 0.2 0.345 0 0 2.667 0.483 3.240
8 55649 0.2 0.709 0 0 3.995 0.596 4.541
9 29258 0.2 0.946 0 0 5.950 0.757 5.931
10 12898 0.2 0.982 0 0 7.011 1.009 7.100
11 2596 0.2 1 0 0 9.436 1.066 8.466
12 817 0.2 1 0 0 11.714 1.181 10.249
13 406 0.2 1 0 0 13.477 0.871 11.400
14 208 0.2 1 0 0 15.683 0.432 12.920
15 463 0.2 1 0 0 17.707 0.432 14.168
                 
2025                
Age N M Mat PF PM SWT Sel CWT
3 450000 0.342 0.007 0 0 0.263 0.030 0.563
4   0.230 0.008 0 0 0.611 0.095 0.920
5   0.222 0.013 0 0 1.194 0.239 1.505
6   0.200 0.081 0 0 1.816 0.379 2.252
7   0.2 0.400 0 0 2.883 0.483 3.190
8   0.2 0.719 0 0 3.998 0.596 4.471
9   0.2 0.877 0 0 5.838 0.757 6.002
10   0.2 0.963 0 0 7.754 1.009 7.237
11   0.2 1.000 0 0 8.873 1.066 8.424
12   0.2 1 0 0 11.324 1.181 9.938
13   0.2 1 0 0 13.823 0.871 11.662
14   0.2 1 0 0 15.672 0.432 12.801
15   0.2 1 0 0 17.936 0.432 14.296
                 
2026                
Age N M Mat PF PM SWT Sel CWT
3 375000 0.342 0.007 0 0 0.268 0.030 0.563
4   0.230 0.008 0 0 0.628 0.095 0.920
5   0.222 0.013 0 0 1.099 0.239 1.505
6   0.200 0.081 0 0 1.935 0.379 2.252
7   0.2 0.400 0 0 2.896 0.483 3.190
8   0.2 0.719 0 0 4.214 0.596 4.471
9   0.2 0.877 0 0 5.841 0.757 6.002
10   0.2 0.963 0 0 7.642 1.009 7.237
11   0.2 1.000 0 0 9.616 1.066 8.424
12   0.2 1 0 0 10.761 1.181 9.938
13   0.2 1 0 0 13.433 0.871 11.662
14   0.2 1 0 0 16.018 0.432 12.801
15   0.2 1 0 0 17.924 0.432 14.296
Table 3.19b. Northeast Arctic COD. Input for the short term prediction using RCT3
 
Yearclass recruitment BST1 BST2 BST3 BSA1 BSA2 BSA3
1982 529 NA NA NA NA NA NA
1983 1361 NA NA NA NA NA NA
1984 355 NA NA NA NA NA NA
1985 332 NA NA NA NA NA NA
1986 159 NA NA NA NA NA NA
1987 133 NA NA NA NA NA NA
1988 299 NA NA NA NA NA NA
1989 714 NA NA NA NA NA NA
1990 987 NA NA NA NA NA NA
1991 749 NA NA 294 NA NA 324
1992 537 NA 557 283 NA 624 138
1993 401 1044 541 163 903 212 99
1994 773 5356 792 318 2175 272 159
1995 1044 5899 1423 355 1826 565