2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/25/2021 | 8:30 AM - 10:30 AM | How wastewater discharge is structuring communities in the urban Santa Ana River headwaters | Virtual Platform
How wastewater discharge is structuring communities in the urban Santa Ana River headwaters
The Santa Ana River runs through dense urban development, and common invasive species include largemouth bass, yellow bullhead, and mosquitofish. These species are frequently found in and around the wastewater discharge channels that maintain flow in the urban Santa Ana River. Wastewater discharge and invasive species are impacting native Santa Ana sucker survival. Invasive species, alongside effluent, are changing community structure in the Santa Ana River as novel biotic filters. We assessed the trophic niche of three common invasive species and Santa Ana sucker across two wastewater discharge channels. Bulk C/N isotope analyses show that there are significant differences in the invasive communities along the assessed reaches of the Santa Ana River. This work demonstrated differences in food web composition between the two discharge channels, and the same species held different isotopic niches in the two channels. Santa Ana sucker were determined to not be a significant food source in one of the two wastewater channels despite a lack of physical dispersal barriers. Future work will include further isotopic analysis to more fully examine how food webs are altered along the Santa Ana River's length.
- Urban
- Species interactions
- Biodiversity
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Presenters/Authors
William Ota
(), UC Riverside, williemota@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Kurt Anderson
(), University of California, Riverside, kurt.anderson@ucr.edu;
ASHA DISCLOSURE:
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Nonfinancial -