2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/05/2017 | 3:00 PM - 3:15 PM | COAL ASH DERIVED SULFUR IN THE DAN RIVER FOOD WEB | 305B
COAL ASH DERIVED SULFUR IN THE DAN RIVER FOOD WEB
In February of 2014, a coal ash spill occurred in the Dan River in Eden, NC. Coal ash is a potential sulfur and heavy metal source and can disrupt aquatic and riparian food webs. Sulfur can stimulate mercury methylation, which bioaccumulates in the food web, threatening human and wildlife health. This study aimed to determine if dominant river and riparian invertebrates assimilated coal ash derived sulfur in relation to distance from the spill using stable isotopes of sulfur and carbon. Sulfur d34S analysis showed that approximately 1.5 years after the spill, riparian spiders downstream from the spill were more enriched in 34S than upstream spiders, consistent with incorporation of coal ash derived sulfur. Spider d34S also increased with distance from the spill site. d34S of the Asian clam, Corbicula fluminea, declined downstream of the spill site, a change that was not consistent with coal ash S, and d13C suggested that Corbicula shifted their feeding mode away from sediment organic matter at downstream sites.
- C25 Food Webs
- C17 Bioassessment
- C13 Ecotoxicology
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Presenters/Authors
Kimber Corson
(), University of North Carolina at Greensboro, kbcorson@uncg.edu;
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Anne Hershey
(), The University of North Carolina at Greensboro, aehershe@uncg.edu;
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M.T.K. Tsui
(), The University of North Carolina at Greensboro, tmtsui@uncg.edu;
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Parke Rublee
(), University of North Carolina at Greensboro, parublee@uncg.edu;
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