Journal
ENVIRONMENTAL POLLUTION
Volume 164, Issue -, Pages 42-45Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2012.01.009
Keywords
Oil spill; Nitrification; Ammonia-oxidizing bacteria; Ammonia-oxidizing archaea; Nitrosopumilus maritimus
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Funding
- U.S. Department of Defense
- Florida Gulf Coast University Office of Research
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The sensitivity of nitrifiers to crude oil released by the BP Deepwater Horizon oil spill in Gulf of Mexico was examined using characterized ammonia-oxidizing bacteria and archaea to develop a bioassay and to gain further insight into the ecological response of these two groups of microorganisms to marine oil spills. Inhibition of nitrite production was observed among all the tested ammonia-oxidizing organisms at 100 ppb crude oil. Nitrosopumilus maritimus, a cultured representative of the abundant Marine Group I Archaea, showed 20% inhibition at 1 ppb, a much greater degree of sensitivity to petroleum than the tested ammonia-oxidizing and heterotrophic bacteria. The differing susceptibility may have ecological significance since a shift to bacterial dominance in response to an oil spill could potentially persist and alter trophic interactions influenced by availability of different nitrogen species. (C) 2012 Elsevier Ltd. All rights reserved.
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