Effect of bioremediation on the microbial community in oiled mangrove sediments

Ramsay, Michelle A., Swannell, Richard P.J., Shipton, Warren A., Duke, Norman C., and Hill, Russell T. (2000) Effect of bioremediation on the microbial community in oiled mangrove sediments. Marine Pollution Bulletin, 41 (7-12). pp. 413-419.

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Bioremediation was conducted in the field on a mature Rhizophora stylosa mangrove stand on land to be reclaimed near Fisherman's Landing Wharf, Gladstone Australia. Gippsland crude oil was added to six large plots (>40 m2) and three plots were left untreated as controls. Bioremediation was used to treat three oiled plots and the remaining three were maintained as oiled only plots. The bioremediation strategy consisted of actively aerating the sediment and adding a slow-release fertilizer in order to promote oil biodegradation by indigenous micro-organisms. Oil addition stimulated the numbers of alkane-degrading bacteria slightly to levels of 104–105/g sediment. Bioremediation of the oiled sediment had a marked effect on the alkane-degrading population, increasing the population size by three orders of magnitude from 105 to 108 cells/g of sediment. An effect of bioremediation on the growth of aromatic-degraders was detected with numbers of aromatic-degraders increasing from 104 to 106 cells/g of sediment. Active aeration and nutrient addition significantly stimulated the growth of hydrocarbon-degraders in oiled mangrove sediment in the field.

Item ID: 12952
Item Type: Article (Research - C1)
ISSN: 1879-3363
Keywords: bacteria; bioremediation; degradation; enumeration; hydrocarbons; oil spills
Date Deposited: 22 Jul 2012 11:53
FoR Codes: 09 ENGINEERING > 0907 Environmental Engineering > 090703 Environmental Technologies @ 51%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050299 Environmental Science and Management not elsewhere classified @ 49%
SEO Codes: 96 ENVIRONMENT > 9612 Rehabilitation of Degraded Environments > 961201 Rehabilitation of Degraded Coastal and Estuarine Environments @ 51%
96 ENVIRONMENT > 9699 Other Environment > 969999 Environment not elsewhere classified @ 49%
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