Sundblad, Göran
- Department of Aquatic Resources (SLU Aqua), Swedish University of Agricultural Sciences
Abstract
Estimates of recreational fishing effort and catch are needed to inform fisheries management, but such estimates can be challenging to obtain. We combined a zig-zag line transect survey of buoys, a fisheries enforcement survey and a drone survey to estimate recreational effort in the open-access trap fishery for signal crayfish (Pacifastacus leniusculus) in the sixth largest lake in Europe, Lake V & auml;ttern, Sweden. Using supporting variables such as size of nearby ports and bathymetry, our model-assisted estimate of total effort was 6400 (+/- 4300 CI) buoys during the three-weekend season. Using the frequency of buoys to traps as a constant, the total number of crayfish traps was estimated to be 25,500 (+/- 17,000 CI). The sampling design and methods presented are useful for ecologists and resource managers to design future multi-source surveys of recreational trap fishing effort.
Keywords
design-based estimation; inland fisheries; model-based estimation; recreational fisheries; Pacifastacus leniusculus; signal crayfish; survey sampling
Published in
Fisheries Management and Ecology
2024, volume: 31, number: 2, article number: e12675
Publisher: WILEY
SLU Authors
de Groote, Annica
- Department of Energy and Technology, Swedish University of Agricultural Sciences
- Department of Energy and Technology, Swedish University of Agricultural Sciences
Lundqvist, Peter
- Department of Energy and Technology, Swedish University of Agricultural Sciences
- Department of Energy and Technology, Swedish University of Agricultural Sciences
Associated SLU-program
Lakes and watercourses
Global goals (SDG)
UKÄ Subject classification
Fish and Aquacultural Science
Publication identifier
- DOI: https://doi.org/10.1111/fme.12675
Permanent link to this page (URI)
https://res.slu.se/id/publ/127593