2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/23/2018 | 9:45 AM - 10:00 AM | EVIDENCE FOR BIOLOGICAL CONNECTEDNESS: FISH DISPERSAL ALONG INTERMITTENT FLOW PATHS AMONG SEASONAL WETLANDS | 430 B
EVIDENCE FOR BIOLOGICAL CONNECTEDNESS: FISH DISPERSAL ALONG INTERMITTENT FLOW PATHS AMONG SEASONAL WETLANDS
While seasonal wetlands (SWs) often support high biodiversity, fish are generally uncommon due to seasonal drying. However, fish dispersal can occur when hydrologically wet periods create intermittent flow paths between wetlands. We examined fish dispersal and biological connectedness along such a flow path in southwestern Georgia. Using passive trapping, fish movement was assessed in 2014 and 2016. In both years, the dominant species among the 10 fish species captured was Ameiurus nebulosus followed by Lepomis sp. Ameiurus nebulosus moved quickly from perennial upstream refugia within days of surface flow while most Lepomis sp. individuals were encountered later, indicating both temperature and velocity changes may play a role in signaling movement. Aside from the many fish species encountered during trapping, two species of crayfish and 10 species of amphibians also utilized the flow path to move across the landscape. Our study shows that biological dispersal during hydrologically favorable periods serve as a potential nexus among SWs and between wetlands and perennial waters. SWs are already recognized as hotspots for biogeochemical transformations; future studies will reveal the role aquatic fauna play in nutrient redistribution at a landscape scale.
- Fish
- Community
- Vertebrate
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Presenters/Authors
Chelsea Smith
(), The Jones Center at Ichauway, chelsea.smith@jonesctr.org;
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Stephen W. Golladay
(), J.W.Jones Research Center, steve.golladay@jonesctr.org;
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