Methanogenic activity and biomass in Holocene permafrost deposits of the Lena Delta, Siberian Arctic and its implication for the global methane budget
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 t...
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ftoceanrep:oai:oceanrep.geomar.de:28404 2023-05-15T14:27:25+02:00 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 text https://oceanrep.geomar.de/id/eprint/28404/ https://oceanrep.geomar.de/id/eprint/28404/1/2007_Wagner-etal-Methanogenic_GloChaBio-13.pdf https://doi.org/10.1111/j.1365-2486.2007.01331.x en eng Wiley https://oceanrep.geomar.de/id/eprint/28404/1/2007_Wagner-etal-Methanogenic_GloChaBio-13.pdf Wagner, D., Gattinger, A., Embacher, A., Pfeiffer, E. M., Schloter, M. and Lipski, A. (2007) Methanogenic activity and biomass in Holocene permafrost deposits of the Lena Delta, Siberian Arctic and its implication for the global methane budget. Open Access Global Change Biology, 13 (5). pp. 1089-1099. DOI 10.1111/j.1365-2486.2007.01331.x <https://doi.org/10.1111/j.1365-2486.2007.01331.x>. doi:10.1111/j.1365-2486.2007.01331.x cc_by_nc_3.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2007 ftoceanrep https://doi.org/10.1111/j.1365-2486.2007.01331.x 2023-04-07T15:18:46Z 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 CH4 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 CH4 production (range: 0.04–0.78 nmol CH4 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 Arctic Arctic lena delta permafrost OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Global Change Biology 13 5 1089 1099 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
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 CH4 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 CH4 production (range: 0.04–0.78 nmol CH4 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 |
https://oceanrep.geomar.de/id/eprint/28404/ https://oceanrep.geomar.de/id/eprint/28404/1/2007_Wagner-etal-Methanogenic_GloChaBio-13.pdf https://doi.org/10.1111/j.1365-2486.2007.01331.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic lena delta permafrost |
genre_facet |
Arctic Arctic lena delta permafrost |
op_relation |
https://oceanrep.geomar.de/id/eprint/28404/1/2007_Wagner-etal-Methanogenic_GloChaBio-13.pdf Wagner, D., Gattinger, A., Embacher, A., Pfeiffer, E. M., Schloter, M. and Lipski, A. (2007) Methanogenic activity and biomass in Holocene permafrost deposits of the Lena Delta, Siberian Arctic and its implication for the global methane budget. Open Access Global Change Biology, 13 (5). pp. 1089-1099. DOI 10.1111/j.1365-2486.2007.01331.x <https://doi.org/10.1111/j.1365-2486.2007.01331.x>. doi:10.1111/j.1365-2486.2007.01331.x |
op_rights |
cc_by_nc_3.0 info:eu-repo/semantics/openAccess |
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 |
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1766301136360308736 |