2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/25/2021 | 2:00 PM - 3:30 PM | CROSSING ECOSYSTEM BOUNDARIES TO BETTER UNDERSTAND MACROSCALE FISH DIVERSITY IN LAKES AND STREAMS | Virtual Platform
CROSSING ECOSYSTEM BOUNDARIES TO BETTER UNDERSTAND MACROSCALE FISH DIVERSITY IN LAKES AND STREAMS
Stream and lake fishes are important economic and recreational resources and serve as indicators of ecological stressors on aquatic ecosystems. Research suggests that fish species diversity is largely influenced by surface water connectivity and fragmentation. For example, lake and stream connections support fish movement among ecosystems and provide access to refugia, food, and spawning sites. Unfortunately, connections can also distribute contaminants and invasive species and contribute to homogenization of fish communities. Interestingly, few studies consider freshwater connections and their effect on both lake and stream fish communities across broad spatial extents. Therefore, this talk examines 1) the relationship between connectivity and fish species diversity for lakes versus streams and 2) how these relationships change in response to regional anthropogenic drivers. Using fish data from 559 lakes and 854 streams from the midwestern/northeastern U.S. and Bayesian hierarchical modeling, we found that connectivity was associated with higher species richness, but that connectivity has different effects on richness depending on regional-scale land use. By studying lakes and streams together and incorporating multi-scale drivers into models, our results inform scientific understanding of what drives variation in fish species diversity at broad spatial scales.
- Biodiversity
- Connectivity
- Landscape
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Presenters/Authors
Katelyn King
(), Michigan State University , kingka21@msu.edu;
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Tyler Wagner
(), U.S. Geological Survey, Pennsylvania Cooperative Fish and Wildlife Research Unit, Pennsylvania State University, txw19@psu.edu;
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Mary Tate Bremigan
(), Michigan State University, bremigan@msu.edu;
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Dana Infante
(), Department of Fisheries and Wildlife, Michigan State University, infanted@msu.edu;
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Kendra Cheruvelil
(), Michigan State University, ksc@msu.edu;
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