Methane fluxes in permafrost habitats of the Lena Delta: effects of microbial community structure and organic matter quality
For the understanding and assessment of recent and future carbon dynamics of arctic permafrost soils the processes of CH4 production and oxidation, the community structure and the quality of DOM were studied in two soils of a polygonal tundra. Activities of methanogens and methanotrophs differed sig...
Published in: | Environmental Microbiology |
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2005
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Online Access: | https://gfzpublic.gfz-potsdam.de/pubman/item/item_245017 |
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_245017 2023-05-15T14:57:41+02:00 Methane fluxes in permafrost habitats of the Lena Delta: effects of microbial community structure and organic matter quality Wagner, D. Lipski, A. Embacher, A. Gattinger, A. 0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum 2005 https://gfzpublic.gfz-potsdam.de/pubman/item/item_245017 unknown info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1462-2920.2005.00849.x https://gfzpublic.gfz-potsdam.de/pubman/item/item_245017 Environmental Microbiology 550 - Earth sciences info:eu-repo/semantics/article 2005 ftgfzpotsdam https://doi.org/10.1111/j.1462-2920.2005.00849.x 2022-09-14T05:57:08Z For the understanding and assessment of recent and future carbon dynamics of arctic permafrost soils the processes of CH4 production and oxidation, the community structure and the quality of DOM were studied in two soils of a polygonal tundra. Activities of methanogens and methanotrophs differed significantly in their rates and distribution patterns among the two investigated profiles. Community structure analysis showed similarities between both soils for esterlinked PLFAs and differences in the fraction of unsaponifiable PLFAs and PLELs. Furthermore, a shift of the overall composition of the microbiota with depth at both sites was indicated by an increasing portion of iso- and anteiso-branched fatty acids related to the amount of straight chain fatty acids. Although permafrost soils represent a large carbon pool, it was shown, that the reduced quality of organic matter leads to a substrate limitation of the microbial metabolism. It can be concluded from our and previous findings firstly that microbial communities in the active layer of an Arctic polygon tundra are composed by members of all three domains of life, with a total biomass comparable to temperate soil ecosystems. And secondly that these microorganisms are well adapted to the extreme temperature gradient of their environment. Article in Journal/Newspaper Arctic lena delta permafrost Tundra GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Arctic Environmental Microbiology 7 10 1582 1592 |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
unknown |
topic |
550 - Earth sciences |
spellingShingle |
550 - Earth sciences Wagner, D. Lipski, A. Embacher, A. Gattinger, A. Methane fluxes in permafrost habitats of the Lena Delta: effects of microbial community structure and organic matter quality |
topic_facet |
550 - Earth sciences |
description |
For the understanding and assessment of recent and future carbon dynamics of arctic permafrost soils the processes of CH4 production and oxidation, the community structure and the quality of DOM were studied in two soils of a polygonal tundra. Activities of methanogens and methanotrophs differed significantly in their rates and distribution patterns among the two investigated profiles. Community structure analysis showed similarities between both soils for esterlinked PLFAs and differences in the fraction of unsaponifiable PLFAs and PLELs. Furthermore, a shift of the overall composition of the microbiota with depth at both sites was indicated by an increasing portion of iso- and anteiso-branched fatty acids related to the amount of straight chain fatty acids. Although permafrost soils represent a large carbon pool, it was shown, that the reduced quality of organic matter leads to a substrate limitation of the microbial metabolism. It can be concluded from our and previous findings firstly that microbial communities in the active layer of an Arctic polygon tundra are composed by members of all three domains of life, with a total biomass comparable to temperate soil ecosystems. And secondly that these microorganisms are well adapted to the extreme temperature gradient of their environment. |
author2 |
0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum |
format |
Article in Journal/Newspaper |
author |
Wagner, D. Lipski, A. Embacher, A. Gattinger, A. |
author_facet |
Wagner, D. Lipski, A. Embacher, A. Gattinger, A. |
author_sort |
Wagner, D. |
title |
Methane fluxes in permafrost habitats of the Lena Delta: effects of microbial community structure and organic matter quality |
title_short |
Methane fluxes in permafrost habitats of the Lena Delta: effects of microbial community structure and organic matter quality |
title_full |
Methane fluxes in permafrost habitats of the Lena Delta: effects of microbial community structure and organic matter quality |
title_fullStr |
Methane fluxes in permafrost habitats of the Lena Delta: effects of microbial community structure and organic matter quality |
title_full_unstemmed |
Methane fluxes in permafrost habitats of the Lena Delta: effects of microbial community structure and organic matter quality |
title_sort |
methane fluxes in permafrost habitats of the lena delta: effects of microbial community structure and organic matter quality |
publishDate |
2005 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_245017 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic lena delta permafrost Tundra |
genre_facet |
Arctic lena delta permafrost Tundra |
op_source |
Environmental Microbiology |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1462-2920.2005.00849.x https://gfzpublic.gfz-potsdam.de/pubman/item/item_245017 |
op_doi |
https://doi.org/10.1111/j.1462-2920.2005.00849.x |
container_title |
Environmental Microbiology |
container_volume |
7 |
container_issue |
10 |
container_start_page |
1582 |
op_container_end_page |
1592 |
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1766329820071854080 |