1997 annual report : environmental monitoring program Louisiana offshore oil port pipeline.
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1998-06-01
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Abstract:The Louisiana Offshore Oil Port (LOOP) Environmental Monitoring Program includes an onshore pipeline vegetation and wildlife survey as a continuing study designed to measure the immediate and long-term impacts of LOOP-related pipeline construction and operation on surrounding wetland plant communities and associated waterfowl, wading-bird, fur bearing mammal, and alligator populations. In 1997, the authors sampled the vegetation biomass in the intermediate salinity zone of the LOOP pipeline. They then analyzed the intermediate vegetation biomass data collected from 1978 through 1997. They included controls to assess "baseline" change rates in the absence of the pipeline because any impacts of the LOOP pipeline occur within a rapidly changing wetland ecosystem. The controls were compared to areas adjacent to the pipeline to test for any pipeline effects. In the marshes surrounding the Clovelly salt dome the authors assessed plant species and cover to characterize the spatial patterns of vegetation occurrence. Because the frequency of waterfowl and wildlife censusing was reduced to once every three years, semi-annual pipeline corridor overflights by trained wetland biologists were conducted in the 1997 monitoring program.
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