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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Veröffentlicht in:Fisheries management and ecology Jg. 29; H. 1; S. 16 - 28
Hauptverfasser: Gemert, Rob, Koemle, Dieter, Winkler, Helmut, Arlinghaus, Robert
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Oxford Wiley Subscription Services, Inc 01.02.2022
Schlagworte:
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
Online-Zugang:Volltext
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Zusammenfassung: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.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0969-997X
1365-2400
1365-2400
DOI:10.1111/fme.12514