Comparative analysis of the impact of trawl and longline fishing on the Barents Sea ecosystem ...

• Main Authors: Grekov, Andrey A., Drevetnyak, Konstantin V.
• Format: Conference Object
• Language: unknown
• Published: ASC 2011 - Theme session I 2024
• Subjects: Ecosystem observation, processes and dynamics; Pressures, impacts, conservation, and management; Barents Sea
• Online Access: https://dx.doi.org/10.17895/ices.pub.25039103; https://ices-library.figshare.com/articles/conference_contribution/Comparative_analysis_of_the_impact_of_trawl_and_longline_fishing_on_the_Barents_Sea_ecosystem/25039103

No abstracts are to be cited without prior reference to the author.In the Barents Sea, bottom fish species are harvested by both bottom trawls and longlines. Despite the similar main target fish species for these gears (cod, haddock, halibut) they differ in selectivity. The species and length composition of catches by trawls and longlines is dissimilar. Because of this, fisheries by bottom trawl and longline have a diverse impact on separate fish stocks and the whole Barents Sea fish fauna. Some fish stocks of the Barents Sea are difficult to access by longlining although they are successfully fished by trawling; in contrast, longlines can be used to target fish species that are present in trawls as a bycatch. In fishery both gears intensively affect the bottom biotope and the biocenoses having formed there. A trawl is an active gear towed at the bottom, whereas a longline lies passively on the ground; therefore a trawl undoubtedly has a greater negative impact on bottom biocenoses. However, unlike a ...