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Biogeochemical factors which regulate the formation and fate of sulfide in wetlandsCoastal wetland areas occupy a small percentage of the terrestrial environment yet are extremely productive regions which support rapid rates of below ground bacterial activity. Wetlands appear to be significant as biogenic sources of gaseous sulfur, carbon, and nitrogen. These gases are important as tracers of man's activities, and they influence atmospheric chemistry. The interactions among wetland biogeochemical processes regulate the anaerobic production of reduced gases and influence the fate of these volatiles. Therefore, spatial and temporal variations in hydrology, salinity, temperature, and speciation and growth of vegetation affect the type and magnitude of gas emissions thus hindering predictive estimates of gas flux. The research is divided into two major parts, the first is the biogeochemical characterization of a selected tidal wetland area in terms of factors likely to regulate sulfide flux; the second is a direct measurement of gaseous sulfur flux as related to changes in these biogeochemical conditions. Variant factors affecting sulfide flux include the wetlands' tidal range, seasonal salinity, and other hydrological conditions, grass species and plant growth, soil composition, and microbial activity.
Document ID
19930073170
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hines, Mark E.
(New Hampshire Univ. Durham, NH, United States)
Lyons, W. Berry
(New Hampshire Univ. Durham, NH, United States)
Gaudette, H. E.
(New Hampshire Univ. Durham, NH, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1985
Publication Information
Publication: NASA. Ames Research Center, First Symposium on Biospheric Research
Subject Category
Environment Pollution
Accession Number
93N70617
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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