2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/22/2019 | 9:15 AM - 9:30 AM | LOCALIZED RESOURCE RELIANCE OF YOUNG-OF-YEAR LARGEMOUTH BASS IN GLACIAL LAKES: IMPLICATIONS FOR NEARSHORE HABITAT MANAGEMENT | 250 CF
LOCALIZED RESOURCE RELIANCE OF YOUNG-OF-YEAR LARGEMOUTH BASS IN GLACIAL LAKES: IMPLICATIONS FOR NEARSHORE HABITAT MANAGEMENT
Midwestern glacial lakes support a diversity of economically and ecologically important fish species. Human activities can have significant purposeful and unintentional impacts on various in-lake biotic and abiotic processes. For instance, patches of nearshore vegetation are often removed for recreation and perceived aesthetic improvement by lakeshore landowners. However, the effects of such removals on fish populations are not well understood. We suggest that the extent to which fish rely on local versus lake-wide resources will have important implications as to how they respond to patchy habitat alterations. Based on stomach content analyses, young-of-year largemouth bass (YOY LMB) exhibit spatially localized trophic relationships within small lakes. We aim to determine if these localized patterns are consistent through time using stable isotope ratios (?13 Carbon, ?15 Nitrogen, ?18 Oxygen and ?2 Hydrogen). Elucidating the degree of reliance on local resources should have implications for the appropriate scale for nearshore habitat management.
- Diet
- Isotope
- Lentic
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Presenters/Authors
Patricia Nease
(), Purdue University, neasep@purdue.edu;
ASHA DISCLOSURE:
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Tomas Hook
(), Purdue University & Illinois-Indiana Sea Grant College Program, thook@purdue.edu;
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