2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/21/2019 | 11:15 AM - 11:30 AM | A MULTI-SCALE APPROACH TO ASSESSING THE EFFECTS OF EMERGING CONTAMINANTS ON MICROBIAL COMMUNITIES IN LOTIC ECOSYSTEMS | 150 G
A MULTI-SCALE APPROACH TO ASSESSING THE EFFECTS OF EMERGING CONTAMINANTS ON MICROBIAL COMMUNITIES IN LOTIC ECOSYSTEMS
A variety of emerging contaminants, including pharmaceuticals, personal care products, illicit drugs, engineered nanomaterials, and microplastics, are detectable in freshwater ecosystems throughout the world as a result of human activities. Because these contaminants are most often found at low concentrations in the environment, they are generally not toxic to aquatic life. However, there is growing concern about the potential for these contaminants to disrupt ecological processes. We are investigating the relationships between emerging contaminants and the activity and composition of benthic microbial communities, which are essential components of stream ecosystems due to their contributions to nutrient cycling and primary production. Understanding mechanistic relationships between contaminants and microbial communities can be challenging in the field, so we have adopted a multi-scale approach that includes field studies, laboratory model systems, and high-throughput screening. Our results have demonstrated that environmentally relevant concentrations of a variety of emerging contaminants can have significant impacts on the composition and activity of benthic microbial communities, including decreases in respiration and primary production and selection for resistant organisms. These results support the conclusion that emerging contaminants can be agents of ecosystem change.
- Ecotoxicology
- Microbial
- Multi-stressors
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Presenters/Authors
John Kelly
(), Loyola University Chicago, Jkelly7@luc.edu;
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Emma Rosi
(), Cary Institute of Ecosystem Studies, rosie@caryinstitute.org;
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