Data‐poor stock assessment of fish stocks co‐exploited by commercial and recreational fisheries: Applications to pike Esox lucius in the western Baltic Sea

Information on catch and effort of recreational angling in mixed‐use fisheries (co‐exploited by commercial and recreational fishers) is often scarce, preventing the application of data‐rich stock assessments typically performed for industrialised commercial fisheries. This study shows how data‐poor...

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Vydané v:	Fisheries management and ecology Ročník 29; číslo 1; s. 16 - 28
Hlavní autori:	Gemert, Rob, Koemle, Dieter, Winkler, Helmut, Arlinghaus, Robert
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Oxford Wiley Subscription Services, Inc 01.02.2022
Predmet:	administrative management Angling Baltic Sea case studies Catch per unit effort catch‐only models coastal stocks ecology ensemble models Esox lucius Exploitation Fish Fish and Aquacultural Science Fish stocks Fisheries Fishers Fishing effort Fishing pressure Fisk- och akvakulturforskning Freshwater Freshwater fish freshwater stocks industrialization Inland water environment Marine fish Marine fisheries mixed‐use fisheries pike Recreation Recreational use Sport fishing Stock assessment stock status time series analysis Baltic Sea
ISSN:	0969-997X, 1365-2400, 1365-2400
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Shrnutí:	Information on catch and effort of recreational angling in mixed‐use fisheries (co‐exploited by commercial and recreational fishers) is often scarce, preventing the application of data‐rich stock assessments typically performed for industrialised commercial fisheries. This study shows how data‐poor stock assessment methods developed for marine fisheries, particularly a model class labelled as “catch‐only” models (COMs), offer a possible solution. As a case study, COMs are used to assess a northern pike Esox lucius L. stock around the German Baltic island of Rügen. Multiple COMs were fitted to a time series of total pike removals, and their outputs were used as explanatory variables in ensemble models. The stock was found to be fully exploited and currently declining. This study highlights the potential for using COMs to determine status of previously unassessed coastal and freshwater stocks facing recreational fishing pressure and demonstrates how incorporating recreational removals is crucial for achieving reliable insights into the status of mixed‐use stocks.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	0969-997X 1365-2400 1365-2400
DOI:	10.1111/fme.12514