EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
6/06/2017 | 3:00 PM - 3:15 PM | FISHING IN THE CITY’S SHADOW: TOWARDS AN UNDERSTANDING OF FISH POPULATION REGULATION IN AN ANGLER-DOMINATED LANDSCAPE | 302A
FISHING IN THE CITY’S SHADOW: TOWARDS AN UNDERSTANDING OF FISH POPULATION REGULATION IN AN ANGLER-DOMINATED LANDSCAPE
Recreational fisheries are spatially structured social-ecological systems where waterbodies are linked by mobile anglers. It has been hypothesized that the reduction or collapse of fish populations should occur in areas near large aggregations of recreational anglers where harvest pressure is presumed to be greatest. To test this hypothesis, we evaluated the direct and indirect influences of recreational anglers on bluegill (Lepomis macrochirus) and largemouth bass (Micropterous salmoides) fisheries across the landscape using path analysis and structural equation modeling. Across 29 lakes, the impacts and responses of angler numbers and movements manifested differently across the landscape. High angler abundances located near large cities reduced bluegill but not largemouth bass abundances, perhaps owing to anglers participating in the catch-and-release of bass but not bluegill. In contrast, angler movements positively tracked bass abundance, indicating anglers traveled further to lakes with more bass. Angler travel distances were also shortest near large cities. Findings support the hypothesis that large angler populations can reduce fish abundances, but indicate impacts will differ in mixed-stock fisheries.
- C02 Fish and Other Aquatic Vertebrates
- S05 Social-Ecological Freshwater Systems
- C08 Urban Ecology
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Presenters/Authors
Scott Collins
(), Texas Tech University, Scott.Collins@ttu.edu;
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David Wahl
(), University of Illinois, d-wahl@illinois.edu;
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