Linking rhizospheric CH 4 oxidation and net CH 4 emissions in an arctic wetland based on 13 CH 4 labeling of mesocosms
Aims: Poorly drained arctic ecosystems are potential large emitters of methane (CH 4 ) due to their high soil organic carbon content and low oxygen availability. In wetlands, aerenchymatous plants transport CH 4 from the soil to the atmosphere, but concurrently transport O 2 to the rhizosphere, whic...
Published in: | Plant and Soil |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2017
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Online Access: | https://curis.ku.dk/portal/da/publications/linking-rhizospheric-ch4-oxidation-and-net-ch4-emissions-in-an-arctic-wetland-based-on-13ch4-labeling-of-mesocosms(ea5df5b3-8c1b-4e91-9c7c-3b2874b47689).html https://doi.org/10.1007/s11104-016-3061-4 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/ea5df5b3-8c1b-4e91-9c7c-3b2874b47689 2023-12-10T09:43:51+01:00 Linking rhizospheric CH 4 oxidation and net CH 4 emissions in an arctic wetland based on 13 CH 4 labeling of mesocosms Nielsen, Cecilie Skov Michelsen, Anders Ambus, Per Deepagoda, T. K. K. Chamindu Elberling, Bo 2017 https://curis.ku.dk/portal/da/publications/linking-rhizospheric-ch4-oxidation-and-net-ch4-emissions-in-an-arctic-wetland-based-on-13ch4-labeling-of-mesocosms(ea5df5b3-8c1b-4e91-9c7c-3b2874b47689).html https://doi.org/10.1007/s11104-016-3061-4 eng eng info:eu-repo/semantics/closedAccess Nielsen , C S , Michelsen , A , Ambus , P , Deepagoda , T K K C & Elberling , B 2017 , ' Linking rhizospheric CH 4 oxidation and net CH 4 emissions in an arctic wetland based on 13 CH 4 labeling of mesocosms ' , Plant and Soil , vol. 412 , no. 1-2 , pp. 201–213 . https://doi.org/10.1007/s11104-016-3061-4 Carex Greenhouse gases Methane Oxidation Stable isotopes Tundra article 2017 ftcopenhagenunip https://doi.org/10.1007/s11104-016-3061-4 2023-11-16T00:00:20Z Aims: Poorly drained arctic ecosystems are potential large emitters of methane (CH 4 ) due to their high soil organic carbon content and low oxygen availability. In wetlands, aerenchymatous plants transport CH 4 from the soil to the atmosphere, but concurrently transport O 2 to the rhizosphere, which may lead to oxidation of CH 4 . The importance of the latter process is largely unknown for arctic plant species and ecosystems. Here, we aim to quantify the subsurface oxidation of CH 4 in a waterlogged arctic ecosystem dominated by Carex aquatilis ssp. stans and Eriophorum angustifolium, and evaluate the overall effect of these plants on the CH 4 budget. Methods: A mesocosms study was established based on the upper 20 cm of an organic soil profile with intact plants retrieved from a peatland in West Greenland (69°N). We measured dissolved concentrations and emissions of 13 CO 2 and 13 CH 4 from mesocosms during three weeks after addition of 13 C-enriched CH 4 below the mesocosm. Results: Most of the recovered 13 C label (>98 %) escaped the ecosystem as CH 4 , while less than 2 % was oxidized to 13 CO 2 . Conclusions: It is concluded that aerenchymatous plants control the overall CH 4 emissions but, as a transport system for oxygen, are too inefficient to markedly reduce CH 4 emissions. Article in Journal/Newspaper Arctic Arctic Carex aquatilis Eriophorum Greenland Tundra University of Copenhagen: Research Arctic Greenland Plant and Soil 412 1-2 201 213 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Carex Greenhouse gases Methane Oxidation Stable isotopes Tundra |
spellingShingle |
Carex Greenhouse gases Methane Oxidation Stable isotopes Tundra Nielsen, Cecilie Skov Michelsen, Anders Ambus, Per Deepagoda, T. K. K. Chamindu Elberling, Bo Linking rhizospheric CH 4 oxidation and net CH 4 emissions in an arctic wetland based on 13 CH 4 labeling of mesocosms |
topic_facet |
Carex Greenhouse gases Methane Oxidation Stable isotopes Tundra |
description |
Aims: Poorly drained arctic ecosystems are potential large emitters of methane (CH 4 ) due to their high soil organic carbon content and low oxygen availability. In wetlands, aerenchymatous plants transport CH 4 from the soil to the atmosphere, but concurrently transport O 2 to the rhizosphere, which may lead to oxidation of CH 4 . The importance of the latter process is largely unknown for arctic plant species and ecosystems. Here, we aim to quantify the subsurface oxidation of CH 4 in a waterlogged arctic ecosystem dominated by Carex aquatilis ssp. stans and Eriophorum angustifolium, and evaluate the overall effect of these plants on the CH 4 budget. Methods: A mesocosms study was established based on the upper 20 cm of an organic soil profile with intact plants retrieved from a peatland in West Greenland (69°N). We measured dissolved concentrations and emissions of 13 CO 2 and 13 CH 4 from mesocosms during three weeks after addition of 13 C-enriched CH 4 below the mesocosm. Results: Most of the recovered 13 C label (>98 %) escaped the ecosystem as CH 4 , while less than 2 % was oxidized to 13 CO 2 . Conclusions: It is concluded that aerenchymatous plants control the overall CH 4 emissions but, as a transport system for oxygen, are too inefficient to markedly reduce CH 4 emissions. |
format |
Article in Journal/Newspaper |
author |
Nielsen, Cecilie Skov Michelsen, Anders Ambus, Per Deepagoda, T. K. K. Chamindu Elberling, Bo |
author_facet |
Nielsen, Cecilie Skov Michelsen, Anders Ambus, Per Deepagoda, T. K. K. Chamindu Elberling, Bo |
author_sort |
Nielsen, Cecilie Skov |
title |
Linking rhizospheric CH 4 oxidation and net CH 4 emissions in an arctic wetland based on 13 CH 4 labeling of mesocosms |
title_short |
Linking rhizospheric CH 4 oxidation and net CH 4 emissions in an arctic wetland based on 13 CH 4 labeling of mesocosms |
title_full |
Linking rhizospheric CH 4 oxidation and net CH 4 emissions in an arctic wetland based on 13 CH 4 labeling of mesocosms |
title_fullStr |
Linking rhizospheric CH 4 oxidation and net CH 4 emissions in an arctic wetland based on 13 CH 4 labeling of mesocosms |
title_full_unstemmed |
Linking rhizospheric CH 4 oxidation and net CH 4 emissions in an arctic wetland based on 13 CH 4 labeling of mesocosms |
title_sort |
linking rhizospheric ch 4 oxidation and net ch 4 emissions in an arctic wetland based on 13 ch 4 labeling of mesocosms |
publishDate |
2017 |
url |
https://curis.ku.dk/portal/da/publications/linking-rhizospheric-ch4-oxidation-and-net-ch4-emissions-in-an-arctic-wetland-based-on-13ch4-labeling-of-mesocosms(ea5df5b3-8c1b-4e91-9c7c-3b2874b47689).html https://doi.org/10.1007/s11104-016-3061-4 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Carex aquatilis Eriophorum Greenland Tundra |
genre_facet |
Arctic Arctic Carex aquatilis Eriophorum Greenland Tundra |
op_source |
Nielsen , C S , Michelsen , A , Ambus , P , Deepagoda , T K K C & Elberling , B 2017 , ' Linking rhizospheric CH 4 oxidation and net CH 4 emissions in an arctic wetland based on 13 CH 4 labeling of mesocosms ' , Plant and Soil , vol. 412 , no. 1-2 , pp. 201–213 . https://doi.org/10.1007/s11104-016-3061-4 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/s11104-016-3061-4 |
container_title |
Plant and Soil |
container_volume |
412 |
container_issue |
1-2 |
container_start_page |
201 |
op_container_end_page |
213 |
_version_ |
1784887073264631808 |