2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
6/06/2017 | 11:15 AM - 11:30 AM | AN ECOTOXICOLOGY APPROACH TO RESEARCHING PETROLEUM SPILLS THROUGH MESOCOSMS AND FIELD OBSERVATIONS | 305B
AN ECOTOXICOLOGY APPROACH TO RESEARCHING PETROLEUM SPILLS THROUGH MESOCOSMS AND FIELD OBSERVATIONS
Oil development has expanded dramatically in the Western United States over the last decade. Associated with the rapid expansion has been an increase in the number of accidental releases into the environment. Here, we explored acute and chronic biological effects of petroleum spills on coldwater streams using data collected from a spill site, as well as data from spills simulated in a mesocosm facility. First, we analyzed stream health indicators across multiple levels of biological organization to identify long-term impacts of a petroleum spill that resulted in a large fish-kill. Histological pathologies in mottled sculpin, Cottus bairdii, and alterations in benthic macroinvertebrate communities were discovered at the spill site and at downstream sites more than two years after the spill occurred. Subsequently, we conducted two mesocosm experiments, using naturally colonized benthic macroinvertebrate communities, to identify short-term impacts of simulated spills. Exposure to simulated spill conditions caused concentration-dependent macroinvertebrate drift and mortality that occurred rapidly after the spills were initiated and at lower concentrations than expected. By utilizing both field observations and mesocosm experimentation we gained insights into consequences of petroleum spills on stream communities using an ecotoxicological weight-of-evidence approach.
- C13 Ecotoxicology
- S25 Do mesocosm experiments play a meaningful role in freshwater research
- S03 Stressing the 'Eco' in Freshwater Ecotoxicology
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Presenters/Authors
William Clements
(), Colorado State University, William.Clements@colostate.edu ;
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Sam Duggan
(), University of Minnesota, sambduggan@gmail.com;
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Paula Schaffer
(), Colorado State University, aluapa@gmail.com;
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Pete Cadmus
(), Colorado Parks and Wildlife, pete.cadmus@state.co.us;
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