Opportunities for Environmental Applications of Marine Biotechnology Proceedings of the October 5-6, 1999, Workshop (2000) / Chapter Skim
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Constraints on the Use of Bioremediation in Wetlands
Constraints on the Use of Bioremediation in Wetlands
Pages 68-72
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From page 68... ...
Although bioremediation has been demonstrated in laboratory, greenhouse, and some field trials, extensive field tests in a variety of different wetland types from coastal salt marsh to riparian forested wetlands have not been conducted. Wetland Biogeochemistry Institute and Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 68
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From page 69... ...
Wetland vegetation could reduce oil concentrations in the soil directly by plant uptake as well as indirectly by maintaining a more suitable soil environment for microbial degradation of the oil. Traditional bioremediation agents such as fertilizers may act not only to directly stimulate microbial activity but also to increase plant growth and thereby indirectly affect plant-mediated controls on oil removal and degradation in the soil.
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From page 70... ...
For example, the question of whether there are plant species-specific differences in capacities to accelerate oil degradation, tolerances to oil, soil oxidative capacity, root architecture and distribution, root exudate release, and rhizosphere development should be addressed. The wetland environment can be complex, with abiotic factors such as salinity, inundation, and pollutants other than oil, which affect the potential for bioremediation.
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From page 71... ...
The use of marsh plantings both to speed the recovery of the habitat and to accelerate oil degradation by phytoremediation is very appealing. Even if plantings are not needed because the original vegetation survived the spill, the application of fertilizer to increase plant growth rates and vegetative reproduction will accelerate habitat restoration and likely accelerate biodegradation.
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From page 72... ...
This will require additional sources of funding to those presently available. SUMMARY Bioremediation shows potential as an oil spill remediation technique for wetlands.
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