Abstract
The response of marine bacteria to Corexit 9527, with and without Prudhoe Bay crude oil labeled withn−(1−14C)hexadecane, in a temperate pelagic environment was monitored over 22 days using controlled ecosystem enclosures. The results indicated that Corexit and Corexit-dispersed crude oil stimulated bacterial production by serving as substrates and/or by inducing the release of organic compounds from the indigenous phytoplankton population. Highest bacterial standing stock was observed in the enclosure treated with a mixture of Corexit and crude oil, in which a large fraction of the predominant bacterivores were eliminated. Biodegradation appeared to be more significant than abiotic processes in contributing to the loss of low volatility n-alkanes in Corexit-dispersed oil. Twenty-two days following its addition, 50% of the radiotracer was recovered: 3% in the suspended particulate fraction, 10% in sedimentary material, 36% as CO2, and less than 1% in the dissolved organic pool.
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Lee, K., Wong, C.S., Cretney, W.J. et al. Microbial response to crude oil and Corexit 9527: SEAFLUXES enclosure study. Microb Ecol 11, 337–351 (1985). https://doi.org/10.1007/BF02016816
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DOI: https://doi.org/10.1007/BF02016816