EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
6/06/2017 | 11:45 AM - 12:00 PM | Using the Species at Risk index as a tool for adaptive management to reduce impacts of pesticides to aquatic ecosystems | 302C
Using the Species at Risk index as a tool for adaptive management to reduce impacts of pesticides to aquatic ecosystems
The Species at Risk pesticides index (SPEARpesticides) is a trait-based approach to evaluating responses of aquatic macroinvertebrate communities to pesticides. It was developed in Europe and has recently been adapted and applied to multiple regions of North and South America. In intensive agricultural regions in Argentina and California where there are almost no riparian buffers, we found a clear relationship between pesticide levels and changes to macroinvertebrate communities (measured by correlation between pesticide levels and SPEARpesticides values, with R2 of 0.35 to 0.53). In intensive agricultural regions in Paraguay and Brazil where there are large riparian buffers, the SPEARpesticides index did not indicate any clear effect of pesticides on macroinvertebrate communities. In California, we used the SPEARpesticides index in conjunction with a watershed-based model (Soil and Water Assessment Tool ) to predict how pesticide-related impacts to aquatic ecosystems would be affected by climate change. We concluded that without changes to management practices, there would be increases in pesticide application and in effects to macroinvertebrate communities. We are currently using the SPEAR and SWAT tools to model various scenarios with implementation of different management practices, focusing on increasing riparian buffers.
- S03 Stressing the 'Eco' in Freshwater Ecotoxicology
- C13 Ecotoxicology
- C17 Bioassessment
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Presenters/Authors
Lisa Hunt
(), University of California, Berkeley, lisahunt@berkeley.edu;
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Vincent Resh
(), University of California, Berkeley, resh@berkeley.edu;
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Ming-Chih Chiu
(), University of California, Berkeley, mcchiu@berkeley.edu;
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Matthias Liess
(), UFZ - Helmholtz Centre for Environmental Research, matthias.liess@ufz.de;
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