Methane release from Gulf coast wetlands
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A seasonal study of methane release from adjoining salt, brackish and fresh marsh sediment and adjacent open water areas in Louisiana's Barataria Basin indicates that methane emission is a significant process in the carbon and energy flow of the ecosystem.Abstract:
A seasonal study of methane release from adjoining salt, brackish and fresh marsh sediment andthe adjacent open water areas in Louisiana’s Barataria Basin indicates that methane emission isa significant process in the carbon and energy flow of the ecosystem. Methane emission wasinversely related to salinity and sulfate concentration, with methane increasing and salinity andsulfate decreasing with increasing distance from the coast. The annual amounts of methaneevolved were 4.3, 73 and 160 g C m -2 for the salt, brackish and fresh marshes, respectively. Invitro experiments show that methane production is sensitive to the addition of sulfate, highconcentrations (10 mM SO,) inhibiting methane evolution. DOI: 10.1111/j.1600-0889.1983.tb00002.xread more
Citations
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Methane emission from natural wetlands: Global distribution, area, and environmental characteristics of sources
E. Matthews,Inez Fung +1 more
TL;DR: A global data base of wetlands at 1° resolution has been developed from the integration of three independent global, digital sources: vegetation, soil properties and fractional inundation in each 1° cell as discussed by the authors.
Journal ArticleDOI
The carbon balance of north american wetlands
TL;DR: In this paper, the carbon balance of North American wetlands was examined by reviewing and synthesizing the published literature and soil databases, with the largest unknown being the role of carbon sequestration by sedimentation in freshwater mineral-soil wetlands.
Journal ArticleDOI
Review and assessment of methane emissions from wetlands
TL;DR: In this paper, the authors reviewed progress on estimating and understanding both the magnitude of, and controls on, emissions of CH4 from natural wetlands and calculated global wetland CH4 emissions using this extensive flux data base and the wetland areas compiled and published by Matthews and Fung (1987).
Journal ArticleDOI
Global distribution of natural freshwater wetlands and rice paddies, their net primary productivity, seasonality and possible methane emissions
I. Aselmann,Paul J. Crutzen +1 more
TL;DR: A global data set on the geographic distribution and seasonality of freshwater wetlands and rice paddies has been compiled, comprising information at a spatial resolution of 2.5° by latitude and 5° by longitude as discussed by the authors.
Journal ArticleDOI
Comparative ecology of tidal freshwater and salt marshes
TL;DR: Historically, tidal freshwater environments have been ignored by limnologists because of the presence of oceanic tidal influence, and neglected by marine ecologists because they are bathed by freshwater and inhabited primarily by freshwater organisms.
References
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Methane consumption in cariaco trench waters and sediments
TL;DR: In this article, the water column and the sediments of the Cariaco Trench were measured and the results showed that CH4 is non-conservative in both environments, and the concentrations of CH4 were found to be non-consistency.
Journal ArticleDOI
Methane production in the interstitial waters of sulfate-depleted marine sediments.
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M R Winfrey,J G Zeikus +1 more
TL;DR: Results indicate that carbon and electron flow are altered when sulfate is added to sediments, and sulfate-reducing organisms appear to assume the role of methanogenic bacteria in sulfate-containing sediments by utilizing meethanogenic precursors.
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Sources of atmospheric methane: Measurements in rice paddies and a discussion
Ralph J. Cicerone,J. D. Shetter +1 more
TL;DR: In this paper, the authors show that the principal means of methane escape is through the plants themselves as opposed to transport across the water-air interface via bubbles or molecular diffusion, and that existing data and flux-measurement methods are insufficient for reliable global extrapolations.
Journal ArticleDOI
The atmospheric cycle of methane
TL;DR: The atmospheric distribution of CH 4 is rather uniform zonally and vertically but exhibits a slight gradient with latitude in the troposphere; in the stratosphere it shows a definite decrease with altitude as discussed by the authors.
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