A field study on the acute effects of the dispersant Corexit 9527 on glucose uptake by marine microorganisms |
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| Authors: | RP Griffiths TM McNamara BA Caldwell RY Morita |
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| Institution: | Department of Microbiology, Oregon State University, Corvallis, OR 97331, USA |
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| Abstract: | The effects of the dispersant Corexit 9527 and Corexit with crude oil on the rate of glucose uptake and mineralisation were studied in Arctic and Subarctic marine waters and sediments. Essentially all of the 149 water and 95 sediment samples tested displayed decreased glucose uptake rates in the presence of either 15 or 50 ppm Corexit. Depressed uptake rates were observed at concentrations as low as 1 ppm. The mean concentration at which Corexit depressed glucose uptake by 50% was 12 ppm. The effect of Corexit was more pronounced on pelagic than on benthic microbial populations. |
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