2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/20/2019 | 11:00 AM - 11:15 AM | REDEFINING AQUATIC HABITAT CONNECTIVITY FOR URBAN CATCHMENTS | 151 ABC
REDEFINING AQUATIC HABITAT CONNECTIVITY FOR URBAN CATCHMENTS
Maintaining thermal habitat connectivity at larger spatial scales is essential for conservation of coldwater stream species. Coldwater fish and aquatic invertebrates have specific thermal tolerance ranges, and their ability to survive thermal stress requires dispersal through connected thermal habitat and thermal refugia. Effects of urbanization are widespread throughout stream networks at multiple spatial scales. Urban areas affect the stream thermal and hydrological regimes and the extent of their influence depends on different local drivers such the repartition of impervious surface within the drainage area. Our ability to quantify amounts of stream burial, sewer-stream connectivity, and pipe-to-stream ratios as drivers of thermal regimes in urban stream networks are important first steps in redefining thermal habitat connectivity. Our study uses logger and modelled data to quantify influences of underground pipe systems on stream temperature for Baltimore City area urban streams. Our results will be compared to other studies to discuss how specific urban drivers influence thermal regimes and thus, thermal habitat connectivity at larger spatial scales. Stream restoration strategies need to include effective management practices for thermal pollution mitigation to maintain a network of thermal refugia for aquatic species across the landscape.
- Connectivity
- Mitigation
- Dispersal
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Presenters/Authors
Anne Timm
(), USDA Forest Service, Northern Research Station, anne.l.timm@usda.gov;
ASHA DISCLOSURE:
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Nonfinancial -
Valerie Ouellet
(), University of Birmingham, v.ouellet@bham.ac.uk;
ASHA DISCLOSURE:
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Nonfinancial -