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earth GRL

Groundwater microbial community composition affected during 30-day exposure
to sub mg/L concentrations of the antibiotic, sulfamethoxazole.

Groundwater microbial community.
Two microbial communities from a sandy aquifer, one acclimated historically to wastewater with sulfamethoxazole and the other unacclimated were exposed to in situ 240-520 μg/L sulfamethoxazole using filter chambers suspended ambient groundwater for 30 days. The unacclimated microbial community displayed greater changes in mortality and impairment, sensitivity to sulfamethoxazole, and community composition than the unacclimated microbial community. The study shows that microbial communities can be affected by concentrations 2-3 orders of magnitude less than those used in clinical applications.

Suggested citation: Haack, S.K., Metge, D.W., Fogarty, L.R., Meyer, M.T., Barber, L.B., Harvey, R.W., LeBlanc, D.R., Kolpin, D.W., 2012. Effects on Groundwater Microbial Communities of an Engineered 30-Day In Situ Exposure to the Antibiotic Sulfamethoxazole, Environmental Science & Technology, 46, 7478-7486.
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Page Last Modified: 2015-10-28 13:42:46 CDT