Quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment
We studied a subarctic lake in an area of sporadic permafrost in order to assess the quantitative importance of lake processes for the catchment carbon balance. Estimates of net ecosystem production and stable carbon-isotope composition of dissolved organic carbon (DOC) in the lake water suggest sub...
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ftcopenhagenunip:oai:pure.atira.dk:publications/022fb992-cd0b-4e41-8b2c-2d8b5a07fb0d 2023-06-11T04:15:55+02:00 Quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment Karlsson, Jan Christensen, Torben R. Friborg, Thomas Förster, Johannes Hammarlund, Dan Jackowicz-Korczyński, Marcin Kokfeit, Ulla Roehm, Charlotte Rosen, Peter 2009 https://curis.ku.dk/portal/da/publications/quantifying-the-relative-importance-of-lake-emissions-in-the-carbon-budget-of-a-subarctic-catchment(022fb992-cd0b-4e41-8b2c-2d8b5a07fb0d).html http://www.scopus.com/inward/record.url?scp=67649834116&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Karlsson , J , Christensen , T R , Friborg , T , Förster , J , Hammarlund , D , Jackowicz-Korczyński , M , Kokfeit , U , Roehm , C & Rosen , P 2009 , Quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment . in Land-atmosphere interaction of a subarctic palsa mire . 184 edn , Meddelanden fran Lunds Universitets Geografiska Institutioner, Avhandlingar , no. 184 , pp. 85-93 . Carbon emission Carbon export Lake respiration Net ecosystem exchange Permafrost Subarctic catchment Terrestrial organic carbon bookPart 2009 ftcopenhagenunip 2023-05-17T22:56:52Z We studied a subarctic lake in an area of sporadic permafrost in order to assess the quantitative importance of lake processes for the catchment carbon balance. Estimates of net ecosystem production and stable carbon-isotope composition of dissolved organic carbon (DOC) in the lake water suggest substantial input and respiration of terrestrial organic carbon in the lake. Total export of terrestrial carbon amounted to 9.5 g C m -2 yr -1 of which about half was mineralized in the lake and released as CO 2 and CH 4 to the atmosphere. The lateral carbon export and die return flux of carbon to the atmosphere from the lake was equivalent to 20% and 10%, respectively, of the terrestrial net uptake of carbon. The terrestrial NEE is biased towards the wet part of the catchment where the sink strength is highest, implying that the importance of carbon losses via aquatic systems is even higher than the budget calculation demonstrate. The results show that lakes are important sources of catchment carbon emission, potentially increasing the positive feedback from permafrost melting on global warming. Book Part permafrost Subarctic University of Copenhagen: Research |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Carbon emission Carbon export Lake respiration Net ecosystem exchange Permafrost Subarctic catchment Terrestrial organic carbon |
spellingShingle |
Carbon emission Carbon export Lake respiration Net ecosystem exchange Permafrost Subarctic catchment Terrestrial organic carbon Karlsson, Jan Christensen, Torben R. Friborg, Thomas Förster, Johannes Hammarlund, Dan Jackowicz-Korczyński, Marcin Kokfeit, Ulla Roehm, Charlotte Rosen, Peter Quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment |
topic_facet |
Carbon emission Carbon export Lake respiration Net ecosystem exchange Permafrost Subarctic catchment Terrestrial organic carbon |
description |
We studied a subarctic lake in an area of sporadic permafrost in order to assess the quantitative importance of lake processes for the catchment carbon balance. Estimates of net ecosystem production and stable carbon-isotope composition of dissolved organic carbon (DOC) in the lake water suggest substantial input and respiration of terrestrial organic carbon in the lake. Total export of terrestrial carbon amounted to 9.5 g C m -2 yr -1 of which about half was mineralized in the lake and released as CO 2 and CH 4 to the atmosphere. The lateral carbon export and die return flux of carbon to the atmosphere from the lake was equivalent to 20% and 10%, respectively, of the terrestrial net uptake of carbon. The terrestrial NEE is biased towards the wet part of the catchment where the sink strength is highest, implying that the importance of carbon losses via aquatic systems is even higher than the budget calculation demonstrate. The results show that lakes are important sources of catchment carbon emission, potentially increasing the positive feedback from permafrost melting on global warming. |
format |
Book Part |
author |
Karlsson, Jan Christensen, Torben R. Friborg, Thomas Förster, Johannes Hammarlund, Dan Jackowicz-Korczyński, Marcin Kokfeit, Ulla Roehm, Charlotte Rosen, Peter |
author_facet |
Karlsson, Jan Christensen, Torben R. Friborg, Thomas Förster, Johannes Hammarlund, Dan Jackowicz-Korczyński, Marcin Kokfeit, Ulla Roehm, Charlotte Rosen, Peter |
author_sort |
Karlsson, Jan |
title |
Quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment |
title_short |
Quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment |
title_full |
Quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment |
title_fullStr |
Quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment |
title_full_unstemmed |
Quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment |
title_sort |
quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment |
publishDate |
2009 |
url |
https://curis.ku.dk/portal/da/publications/quantifying-the-relative-importance-of-lake-emissions-in-the-carbon-budget-of-a-subarctic-catchment(022fb992-cd0b-4e41-8b2c-2d8b5a07fb0d).html http://www.scopus.com/inward/record.url?scp=67649834116&partnerID=8YFLogxK |
genre |
permafrost Subarctic |
genre_facet |
permafrost Subarctic |
op_source |
Karlsson , J , Christensen , T R , Friborg , T , Förster , J , Hammarlund , D , Jackowicz-Korczyński , M , Kokfeit , U , Roehm , C & Rosen , P 2009 , Quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment . in Land-atmosphere interaction of a subarctic palsa mire . 184 edn , Meddelanden fran Lunds Universitets Geografiska Institutioner, Avhandlingar , no. 184 , pp. 85-93 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1768373155776167936 |