Effects of trawling and longlining on the yield and biomass of cod stocks - numerically simulated

• Main Authors: Bjordal, Åsmund, Laevastu, Taivo
• Format: Report
• Language: English
• Published: ICES 1990
• Subjects: cod; torsk; trawl; trål; long line; line; stock assessment; bestandsberegning; VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925; VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452; Bering Sea; Pacific; Tac
• Online Access: http://hdl.handle.net/11250/104771

Numerical studies were conducted on the effects of trawl and longline catches on a cod stock and possible yields from it. Five year mean age composition of Pacific cod (Gadus macrocephalus) from the Bering Sea was used as initial age composition of the stock, which was normalized to 1 ton. Age speci...