Methane fluxes in permafrost habitats of the Lena Delta: effects of microbial community structure and organic matter quality
Summary For the understanding and assessment of recent and future carbon dynamics of arctic permafrost soils the processes of CH 4 production and oxidation, the community structure and the quality of dissolved organic matter (DOM) were studied in two soils of a polygonal tundra. Activities of methan...
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Online Access: | http://dx.doi.org/10.1111/j.1462-2920.2005.00849.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1462-2920.2005.00849.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1462-2920.2005.00849.x/fullpdf |
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crwiley:10.1111/j.1462-2920.2005.00849.x 2024-10-06T13:46:18+00:00 Methane fluxes in permafrost habitats of the Lena Delta: effects of microbial community structure and organic matter quality Wagner, Dirk Lipski, André Embacher, Arndt Gattinger, Andreas 2005 http://dx.doi.org/10.1111/j.1462-2920.2005.00849.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1462-2920.2005.00849.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1462-2920.2005.00849.x/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Microbiology volume 7, issue 10, page 1582-1592 ISSN 1462-2912 1462-2920 journal-article 2005 crwiley https://doi.org/10.1111/j.1462-2920.2005.00849.x 2024-09-23T04:34:52Z Summary For the understanding and assessment of recent and future carbon dynamics of arctic permafrost soils the processes of CH 4 production and oxidation, the community structure and the quality of dissolved organic matter (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 ester‐linked phospholipid fatty acids (PLFAs) and differences in the fraction of unsaponifiable PLFAs and phospholipid ether lipids. 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 first 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 second that these microorganisms are well adapted to the extreme temperature gradient of their environment. Article in Journal/Newspaper Arctic lena delta permafrost Tundra Wiley Online Library Arctic Environmental Microbiology 7 10 1582 1592 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Summary For the understanding and assessment of recent and future carbon dynamics of arctic permafrost soils the processes of CH 4 production and oxidation, the community structure and the quality of dissolved organic matter (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 ester‐linked phospholipid fatty acids (PLFAs) and differences in the fraction of unsaponifiable PLFAs and phospholipid ether lipids. 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 first 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 second that these microorganisms are well adapted to the extreme temperature gradient of their environment. |
format |
Article in Journal/Newspaper |
author |
Wagner, Dirk Lipski, André Embacher, Arndt Gattinger, Andreas |
spellingShingle |
Wagner, Dirk Lipski, André Embacher, Arndt Gattinger, Andreas Methane fluxes in permafrost habitats of the Lena Delta: effects of microbial community structure and organic matter quality |
author_facet |
Wagner, Dirk Lipski, André Embacher, Arndt Gattinger, Andreas |
author_sort |
Wagner, Dirk |
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 |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1111/j.1462-2920.2005.00849.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1462-2920.2005.00849.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1462-2920.2005.00849.x/fullpdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic lena delta permafrost Tundra |
genre_facet |
Arctic lena delta permafrost Tundra |
op_source |
Environmental Microbiology volume 7, issue 10, page 1582-1592 ISSN 1462-2912 1462-2920 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
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 |
_version_ |
1812174591335858176 |