Methanogenic activity and biomass in Holocene permafrost deposits of the Lena Delta, Siberian Arctic and its implication for the global methane budget
Abstract Permafrost environments within the Siberian Arctic are natural sources of the climate relevant trace gas methane. In order to improve our understanding of the present and future carbon dynamics in high latitudes, we studied the methane concentration, the quantity and quality of organic matt...
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crwiley:10.1111/j.1365-2486.2007.01331.x 2024-09-15T18:17:39+00:00 Methanogenic activity and biomass in Holocene permafrost deposits of the Lena Delta, Siberian Arctic and its implication for the global methane budget WAGNER, DIRK GATTINGER, ANDREAS EMBACHER, ARNDT PFEIFFER, EVA‐MARIA SCHLOTER, MICHAEL LIPSKI, ANDRÉ 2007 http://dx.doi.org/10.1111/j.1365-2486.2007.01331.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2486.2007.01331.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2486.2007.01331.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 13, issue 5, page 1089-1099 ISSN 1354-1013 1365-2486 journal-article 2007 crwiley https://doi.org/10.1111/j.1365-2486.2007.01331.x 2024-08-01T04:21:04Z Abstract Permafrost environments within the Siberian Arctic are natural sources of the climate relevant trace gas methane. In order to improve our understanding of the present and future carbon dynamics in high latitudes, we studied the methane concentration, the quantity and quality of organic matter, and the activity and biomass of the methanogenic community in permafrost deposits. For these investigations a permafrost core of Holocene age was drilled in the Lena Delta (72°22′N, 126°28′E). The organic carbon of the permafrost sediments varied between 0.6% and 4.9% and was characterized by an increasing humification index with permafrost depth. A high CH 4 concentration was found in the upper 4 m of the deposits, which correlates well with the methanogenic activity and archaeal biomass (expressed as PLEL concentration). Even the incubation of core material at −3 and −6°C with and without substrates showed a significant CH 4 production (range: 0.04–0.78 nmol CH 4 h −1 g −1 ). The results indicated that the methane in Holocene permafrost deposits of the Lena Delta originated from modern methanogenesis by cold‐adapted methanogenic archaea. Microbial generated methane in permafrost sediments is so far an underestimated factor for the future climate development. Article in Journal/Newspaper lena delta permafrost Wiley Online Library Global Change Biology 13 5 1089 1099 |
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English |
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Abstract Permafrost environments within the Siberian Arctic are natural sources of the climate relevant trace gas methane. In order to improve our understanding of the present and future carbon dynamics in high latitudes, we studied the methane concentration, the quantity and quality of organic matter, and the activity and biomass of the methanogenic community in permafrost deposits. For these investigations a permafrost core of Holocene age was drilled in the Lena Delta (72°22′N, 126°28′E). The organic carbon of the permafrost sediments varied between 0.6% and 4.9% and was characterized by an increasing humification index with permafrost depth. A high CH 4 concentration was found in the upper 4 m of the deposits, which correlates well with the methanogenic activity and archaeal biomass (expressed as PLEL concentration). Even the incubation of core material at −3 and −6°C with and without substrates showed a significant CH 4 production (range: 0.04–0.78 nmol CH 4 h −1 g −1 ). The results indicated that the methane in Holocene permafrost deposits of the Lena Delta originated from modern methanogenesis by cold‐adapted methanogenic archaea. Microbial generated methane in permafrost sediments is so far an underestimated factor for the future climate development. |
format |
Article in Journal/Newspaper |
author |
WAGNER, DIRK GATTINGER, ANDREAS EMBACHER, ARNDT PFEIFFER, EVA‐MARIA SCHLOTER, MICHAEL LIPSKI, ANDRÉ |
spellingShingle |
WAGNER, DIRK GATTINGER, ANDREAS EMBACHER, ARNDT PFEIFFER, EVA‐MARIA SCHLOTER, MICHAEL LIPSKI, ANDRÉ Methanogenic activity and biomass in Holocene permafrost deposits of the Lena Delta, Siberian Arctic and its implication for the global methane budget |
author_facet |
WAGNER, DIRK GATTINGER, ANDREAS EMBACHER, ARNDT PFEIFFER, EVA‐MARIA SCHLOTER, MICHAEL LIPSKI, ANDRÉ |
author_sort |
WAGNER, DIRK |
title |
Methanogenic activity and biomass in Holocene permafrost deposits of the Lena Delta, Siberian Arctic and its implication for the global methane budget |
title_short |
Methanogenic activity and biomass in Holocene permafrost deposits of the Lena Delta, Siberian Arctic and its implication for the global methane budget |
title_full |
Methanogenic activity and biomass in Holocene permafrost deposits of the Lena Delta, Siberian Arctic and its implication for the global methane budget |
title_fullStr |
Methanogenic activity and biomass in Holocene permafrost deposits of the Lena Delta, Siberian Arctic and its implication for the global methane budget |
title_full_unstemmed |
Methanogenic activity and biomass in Holocene permafrost deposits of the Lena Delta, Siberian Arctic and its implication for the global methane budget |
title_sort |
methanogenic activity and biomass in holocene permafrost deposits of the lena delta, siberian arctic and its implication for the global methane budget |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1111/j.1365-2486.2007.01331.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2486.2007.01331.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2486.2007.01331.x |
genre |
lena delta permafrost |
genre_facet |
lena delta permafrost |
op_source |
Global Change Biology volume 13, issue 5, page 1089-1099 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2486.2007.01331.x |
container_title |
Global Change Biology |
container_volume |
13 |
container_issue |
5 |
container_start_page |
1089 |
op_container_end_page |
1099 |
_version_ |
1810455715053043712 |