Effect of Gillnet Twine Thickness on Capture Pattern and Efficiency in the Northeast Arctic Cod (Gadus Morhua) Fishery

Retrieval Operations of Derelict Fishing Gears Give Insight on the Impact on Marine Life

“…Indicators were used to evaluate how ALD gillnets and king crab pots influenced species richness, dominance, biodiversity, and evenness. Due to the lower catch selectivity of gillnets compared to king crab pots, as observed in literature (Starbatty, 2016;Brinkhof, 2022), retrieved ALD gillnets had a more pronounced impact on species richness and biodiversity than ALD king crab pots. Accordingly, a higher species dominance was observed in the retrieved ALD king crab pots as opposed to ALD gillnets.…”

“…In the context of this study, each retrieved longline was considered as a single longline unit. The stretched gillnet mesh size, gillnet twine diameter, gillnet top / bottom rope diameter, king crab pot line rope diameter, longline diameter, and marker buoy-to-anchor rope diameter, were measured using a vernier caliper (Brinkhof, 2022). The escape mechanism in the retrieved ALD king crab pots was checked to determine if it was open or closed.…”