Amazon Capims (floating grassmats): A source of 13C enriched methane to the troposphere ...
The 13C isotopic composition of methane emitted to the troposphere from Amazon capims (floating grassmats) ranged from −36.9 to −48.0‰, averaging −44.4 ± 4.2‰. All pools of methane associated with the grassmats were 13C enriched; methane withdrawn from plant stems ranged from −39 to −49‰ while bubbl...
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The University of North Carolina at Chapel Hill University Libraries
1989
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ftdatacite:10.17615/c9yd-2w22 2024-03-31T07:51:02+00:00 Amazon Capims (floating grassmats): A source of 13C enriched methane to the troposphere ... Bartlett, K. Chanton, J. Martens, C. Crill, P. 1989 https://dx.doi.org/10.17615/c9yd-2w22 https://cdr.lib.unc.edu/concern/articles/0z709626k en eng The University of North Carolina at Chapel Hill University Libraries In Copyright http://rightsstatements.org/vocab/InC/1.0/ Text article-journal Article ScholarlyArticle 1989 ftdatacite https://doi.org/10.17615/c9yd-2w22 2024-03-04T11:45:02Z The 13C isotopic composition of methane emitted to the troposphere from Amazon capims (floating grassmats) ranged from −36.9 to −48.0‰, averaging −44.4 ± 4.2‰. All pools of methane associated with the grassmats were 13C enriched; methane withdrawn from plant stems ranged from −39 to −49‰ while bubbles stirred from the root mat averaged −41.4‰. As the CH4 flux from these habitats makes up some 40% of the total flux from the Amazon floodplain, CH4 emissions from the region as a whole must be enriched in the heavy carbon isotope. Methane withdrawn from the stems of five genera of rooted macrophytes ranging in latitude from the Florida Everglades to the Alaskan Arctic exhibited 13C enrichment relative to the sedimentary methane bubble reservoir. Several hypotheses based upon isotopic fractionation by methane transport, oxidation and production processes are proposed to explain this phenomenon. ... Text Arctic DataCite Metadata Store (German National Library of Science and Technology) Arctic |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
description |
The 13C isotopic composition of methane emitted to the troposphere from Amazon capims (floating grassmats) ranged from −36.9 to −48.0‰, averaging −44.4 ± 4.2‰. All pools of methane associated with the grassmats were 13C enriched; methane withdrawn from plant stems ranged from −39 to −49‰ while bubbles stirred from the root mat averaged −41.4‰. As the CH4 flux from these habitats makes up some 40% of the total flux from the Amazon floodplain, CH4 emissions from the region as a whole must be enriched in the heavy carbon isotope. Methane withdrawn from the stems of five genera of rooted macrophytes ranging in latitude from the Florida Everglades to the Alaskan Arctic exhibited 13C enrichment relative to the sedimentary methane bubble reservoir. Several hypotheses based upon isotopic fractionation by methane transport, oxidation and production processes are proposed to explain this phenomenon. ... |
format |
Text |
author |
Bartlett, K. Chanton, J. Martens, C. Crill, P. |
spellingShingle |
Bartlett, K. Chanton, J. Martens, C. Crill, P. Amazon Capims (floating grassmats): A source of 13C enriched methane to the troposphere ... |
author_facet |
Bartlett, K. Chanton, J. Martens, C. Crill, P. |
author_sort |
Bartlett, K. |
title |
Amazon Capims (floating grassmats): A source of 13C enriched methane to the troposphere ... |
title_short |
Amazon Capims (floating grassmats): A source of 13C enriched methane to the troposphere ... |
title_full |
Amazon Capims (floating grassmats): A source of 13C enriched methane to the troposphere ... |
title_fullStr |
Amazon Capims (floating grassmats): A source of 13C enriched methane to the troposphere ... |
title_full_unstemmed |
Amazon Capims (floating grassmats): A source of 13C enriched methane to the troposphere ... |
title_sort |
amazon capims (floating grassmats): a source of 13c enriched methane to the troposphere ... |
publisher |
The University of North Carolina at Chapel Hill University Libraries |
publishDate |
1989 |
url |
https://dx.doi.org/10.17615/c9yd-2w22 https://cdr.lib.unc.edu/concern/articles/0z709626k |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_rights |
In Copyright http://rightsstatements.org/vocab/InC/1.0/ |
op_doi |
https://doi.org/10.17615/c9yd-2w22 |
_version_ |
1795029566842994688 |