Abundance, distribution and potential activity of methane oxidizing bacteria in permafrost soils from the Lena Delta, Siberia
Summary The methane oxidation potential of active layer profiles of permafrost soils from the Lena Delta, Siberia, was studied with regard to its respond to temperature, and abundance and distribution of type I and type II methanotrophs. Our results indicate vertical shifts within the optimal methan...
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crwiley:10.1111/j.1462-2920.2006.01120.x 2024-06-23T07:54:28+00:00 Abundance, distribution and potential activity of methane oxidizing bacteria in permafrost soils from the Lena Delta, Siberia Liebner, Susanne Wagner, Dirk 2006 http://dx.doi.org/10.1111/j.1462-2920.2006.01120.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1462-2920.2006.01120.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1462-2920.2006.01120.x/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Microbiology volume 9, issue 1, page 107-117 ISSN 1462-2912 1462-2920 journal-article 2006 crwiley https://doi.org/10.1111/j.1462-2920.2006.01120.x 2024-06-06T04:22:34Z Summary The methane oxidation potential of active layer profiles of permafrost soils from the Lena Delta, Siberia, was studied with regard to its respond to temperature, and abundance and distribution of type I and type II methanotrophs. Our results indicate vertical shifts within the optimal methane oxidation temperature and within the distribution of type I and type II methanotrophs. In the upper active layer, maximum methane oxidation potentials were detected at 21°C. Deep active layer zones that are constantly exposed to temperatures below 2°C showed a maximum potential to oxidize methane at 4°C. Our results indicate a dominance of psychrophilic methanotrophs close to the permafrost table. Type I methanotrophs dominated throughout the active layer profiles but their number strongly fluctuated with depth. In contrast, type II methanotrophs were constantly abundant through the whole active layer and displaced type I methanotrophs close to the permafrost table. No correlation between in situ temperatures and the distribution of type I and type II methanotrophs was found. However, the distribution of type I and type II methanotrophs correlated significantly with in situ methane concentrations. Beside vertical fluctuations, the abundance of methane oxidizers also fluctuated according to different geomorphic units. Similar methanotroph cell counts were detected in samples of a flood plain and a polygon rim, whereas cell counts in samples of a polygon centre were up to 100 times lower. Article in Journal/Newspaper lena delta permafrost Siberia Wiley Online Library Environmental Microbiology 9 1 107 117 |
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English |
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Summary The methane oxidation potential of active layer profiles of permafrost soils from the Lena Delta, Siberia, was studied with regard to its respond to temperature, and abundance and distribution of type I and type II methanotrophs. Our results indicate vertical shifts within the optimal methane oxidation temperature and within the distribution of type I and type II methanotrophs. In the upper active layer, maximum methane oxidation potentials were detected at 21°C. Deep active layer zones that are constantly exposed to temperatures below 2°C showed a maximum potential to oxidize methane at 4°C. Our results indicate a dominance of psychrophilic methanotrophs close to the permafrost table. Type I methanotrophs dominated throughout the active layer profiles but their number strongly fluctuated with depth. In contrast, type II methanotrophs were constantly abundant through the whole active layer and displaced type I methanotrophs close to the permafrost table. No correlation between in situ temperatures and the distribution of type I and type II methanotrophs was found. However, the distribution of type I and type II methanotrophs correlated significantly with in situ methane concentrations. Beside vertical fluctuations, the abundance of methane oxidizers also fluctuated according to different geomorphic units. Similar methanotroph cell counts were detected in samples of a flood plain and a polygon rim, whereas cell counts in samples of a polygon centre were up to 100 times lower. |
format |
Article in Journal/Newspaper |
author |
Liebner, Susanne Wagner, Dirk |
spellingShingle |
Liebner, Susanne Wagner, Dirk Abundance, distribution and potential activity of methane oxidizing bacteria in permafrost soils from the Lena Delta, Siberia |
author_facet |
Liebner, Susanne Wagner, Dirk |
author_sort |
Liebner, Susanne |
title |
Abundance, distribution and potential activity of methane oxidizing bacteria in permafrost soils from the Lena Delta, Siberia |
title_short |
Abundance, distribution and potential activity of methane oxidizing bacteria in permafrost soils from the Lena Delta, Siberia |
title_full |
Abundance, distribution and potential activity of methane oxidizing bacteria in permafrost soils from the Lena Delta, Siberia |
title_fullStr |
Abundance, distribution and potential activity of methane oxidizing bacteria in permafrost soils from the Lena Delta, Siberia |
title_full_unstemmed |
Abundance, distribution and potential activity of methane oxidizing bacteria in permafrost soils from the Lena Delta, Siberia |
title_sort |
abundance, distribution and potential activity of methane oxidizing bacteria in permafrost soils from the lena delta, siberia |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1462-2920.2006.01120.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1462-2920.2006.01120.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1462-2920.2006.01120.x/fullpdf |
genre |
lena delta permafrost Siberia |
genre_facet |
lena delta permafrost Siberia |
op_source |
Environmental Microbiology volume 9, issue 1, page 107-117 ISSN 1462-2912 1462-2920 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1462-2920.2006.01120.x |
container_title |
Environmental Microbiology |
container_volume |
9 |
container_issue |
1 |
container_start_page |
107 |
op_container_end_page |
117 |
_version_ |
1802646626531016704 |