2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/06/2017 | 2:00 PM - 2:15 PM | COMPARING SEASONAL PATTERNS OF STREAM MACROINVERTEBRATES IN URBAN STREAMS WITH VARYING STORMWATER CONTROL | 302A
COMPARING SEASONAL PATTERNS OF STREAM MACROINVERTEBRATES IN URBAN STREAMS WITH VARYING STORMWATER CONTROL
Urbanization decreases the abundance and diversity of macroinvertebrates in streams. Stormwater control measures (SCMs) are implemented to mitigate these impacts and improve overall stream health; however, few data exist quantifying whether SCMs positively influence stream ecosystem function. We investigated seasonal changes in stream macroinvertebrates from 2011 – 2013 in 4 small watersheds (2 urban; 2 suburban) with SCMs in Charlotte, NC. Samples were collected immediately upstream and downstream of the confluence of the SCM outlet and the stream channel and at two additional locations downstream using NC DENR Qual 4 methods. There were differences in community structure among sites indicating that there are factors contributing to the maintenance of local invertebrate communities in each watershed. We tested multiple watershed metrics that quantify the degree of urban impact and SCM mitigation and found that total imperviousness (TI) and not SCM type was a more important variable in predicting total and EPT diversity. While urbanization decreases the abundance and diversity of macroinvertebrates in streams, SCMs play an important role in preventing further macroinvertebrate species loss.
- C03 Invertebrates
- C17 Bioassessment
- C08 Urban Ecology
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Presenters/Authors
Sandra Clinton, PhD
(), University of North Carolina at Charlotte, sclinto1@uncc.edu;
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Colin Bell
(), Colorado School of Mines, cdbell@mines.edu;
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Suresh Rao
(), Purdue University, sureshrao@purdue.edu;
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Sara McMillan
(), Purdue University, mcmill@purdue.edu;
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