2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/25/2021 | 8:30 AM - 10:30 AM | WATERSHED IMPERVIOUSNESS AND STREAM SIZE MORE STRONGLY RELATED TO BENTHIC MACROINVERTEBRATE COMMUNITIES THAN INVASIVE RIPARIAN HONEYSUCKLE | Virtual Platform
WATERSHED IMPERVIOUSNESS AND STREAM SIZE MORE STRONGLY RELATED TO BENTHIC MACROINVERTEBRATE COMMUNITIES THAN INVASIVE RIPARIAN HONEYSUCKLE
Urban streams are subject to stressors such as increased imperviousness; widespread hydrogeomorphic, chemical, and biological alterations; and invasive species. We investigated associations of invasive riparian honeysuckle and benthic macroinvertebrate communities through both observational and experimental studies at 21 streams in the Columbus Metropolitan Area, Ohio. Although honeysuckle density was related to lower relative abundance of herbivorous and small-bodied invertebrates, it was a poor predictor of benthic invertebrate density, diversity, and community composition. We also found no indication that experimental removal of honeysuckle influenced invertebrate density, diversity, %Ephemeroptera, Plecoptera, Trichoptera (EPT), or %detritivores. Instead, impervious surface and/or bankfull width were implicated as negative and positive drivers, respectively, of invertebrate density, diversity, and %EPT. Taken together, our results indicate that properties such as stream size, channel adjustment, and impervious surface in the watershed may overwhelm potential signals from invasive honeysuckle. Thus, expanding green spaces and reducing imperviousness may be the most effective management strategies for biological water quality in urban catchments
- Aquatic–terrestrial biodiversity
- Urban
- Stream
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Presenters/Authors
Kristen M. Diesburg
(), The Ohio State University, diesburg.1@osu.edu;
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S. Mažeika P. Sullivan
(), The Ohio State University, sullivan.191@osu.edu;
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