Figure 4: Observed densities as number of scallops per m2 caught by dredging and counted on video transects (left) and gear effects in GAMM used to estimate density (right). Dots in left figure are pairs of parallel dredge and video stations with a maximum distance of 3 NM between them. Size of dots is inversely scaled to their distance (the closer the larger) and colors represent the different scallop beds from the survey in 2022 (Moffen and Parryflaket). The dashed line represents a linear regression between the two gear types. Right figure shows the estimated mean and 95% confidence intervals per scallop bed and gear type, while smaller dots represents observed densities.
