2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/06/2017 | 2:15 PM - 2:30 PM | MICROPLASTIC DEPOSITION IN STREAMS: INFLUENCE OF POLYMER TYPE AND BIOFILM COLONIZATION | 302A
MICROPLASTIC DEPOSITION IN STREAMS: INFLUENCE OF POLYMER TYPE AND BIOFILM COLONIZATION
Environmental accumulation of plastic waste is an agent of environmental change that has stimulated a rapidly developing field of research in ecosystems worldwide. River networks are implicated as a primary source of microplastic (i.e., particles <5 mm) to oceans, but there are few measurements of microplastic abundance and dispersal in rivers and streams. We adapted spiraling metrics used for organic matter and solutes to quantify microplastic deposition in an outdoor experimental stream at the ND-LEEF facility. We conducted replicated pulse releases of 3 microplastics commonly found in rivers: polystyrene beads, fragments, and acrylic fibers. For each particle type, we repeated pulses using particles with and without biofilm colonization. We predicted the greatest retention for the densest particles (i.e., acrylic fibers) colonized by biofilms. We placed results in context by comparing deposition rates to ongoing research on microplastic abundance in water, sediment, invertebrates, and fish in Lake Michigan tributaries. Results from this research are the first empirical measurements of microplastic deposition in lotic ecosystems, and will contribute significantly to the broader field of research on the global ecology of plastic waste.
- S03 Stressing the 'Eco' in Freshwater Ecotoxicology
- C27 Landuse and Non-Point source Impacts
- C08 Urban Ecology
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Presenters/Authors
Timothy Hoellein
(), Loyola University Chicago, thoellein@luc.edu;
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Arial Shogren
(), Department of Earth and Environmental Sciences, Michigan State University, shogrena@msu.edu;
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Jennifer L. Tank
(), University of Notre Dame, tank.1@nd.edu;
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John Kelly
(), Loyola University Chicago, Jkelly7@luc.edu;
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