2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/26/2021 | 8:30 AM - 10:30 AM | Evaluating impacts of fisheries management practices on a freshwater fish community through size spectrum modeling | Virtual Platform
Evaluating impacts of fisheries management practices on a freshwater fish community through size spectrum modeling
Historically, fisheries management has been based on maximum sustainable yield theory of individual fish stocks; however, this approach has long been criticized for its inability to capture species interactions and dynamics of non-target species. Ecosystem-based fisheries management (EBFM), a framework that emphasizes a multispecies perspective, has been proposed as a method to address these issues. Size spectrum models, which can be used to assess interactions between species and simulate community dynamics under various scenarios, present an opportunity to apply an EBFM approach to fisheries management through modeling. Although size spectrum models have successfully been applied to numerous marine ecosystems, their use in freshwater systems is limited. Here, we develop a multispecies size spectrum model for Lake Nipissing, a large, north temperate lake with an economically and culturally important Walleye (Sander vitreus) fishery in Ontario, Canada. Through our simulations, we evaluate the impacts of various fisheries management practices on population and community dynamics of both target and non-target species. In doing so, we highlight the potential of this approach in freshwater systems.
- Management
- Ecosystem functioning
- Energy flows
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Presenters/Authors
David Benoit
(), University of Toronto, d.benoit@mail.utoronto.ca;
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