2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/26/2021 | 8:30 AM - 10:30 AM | STREAM DRYING PATTERNS AND FISH ASSEMBLAGES IN THE BLUE RIVER WATERSHED, OKLAHOMA | Virtual Platform
STREAM DRYING PATTERNS AND FISH ASSEMBLAGES IN THE BLUE RIVER WATERSHED, OKLAHOMA
Stream drying is thought to have an important, but understudied, influence on ecosystem structure and function. Previous research has indicated that changes in climate have the potential to reduce habitat availability and connectivity for fish in non-perennial streams. Here, we aim to understand how historical fish assemblages are related to spatiotemporal drying patterns in the headwaters of the Blue River, Oklahoma, and how stream drying under future climate scenarios may alter these assemblages. We integrated historical fish occurrence data with hydrologic model outputs for historic and future climate scenarios. Using the hydrologic model outputs, we calculated metrics of stream connectivity and flow variability (wetted length, dendritic connectivity index, and ecologically scaled landscape index) at a daily timestep for both historical and future climate scenarios. We describe how species assemblages, species probability of detection, and watershed connectivity may change in the future and vary among future climate scenarios. Our approach will provide insight on how climate induced changes in stream drying patterns may affect distributions of fish species in the Southern Plains region of the United States.
- Dry rivers
- Connectivity
- Flow
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Presenters/Authors
Megan C. Malish
(), University of Oklahoma, megan.malish@ou.edu;
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Shang Gao
(), University of Oklahoma, shang.gao@ou.edu;
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Thomas Neeson
(), University of Oklahoma, thomas.neeson@gmail.com;
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Daniel Allen
(), University of Oklahoma, dcallen@ou.edu;
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