Carbon accumulation in thermokarst lakes: A biogeochemical comparison between Alaskan boreal and tundra lake deposits
Thermokarst lakes are widespread features of changing periglacial environments. In this study, we analyze total organic carbon content (TOC), C/N, stable carbon isotopes and methane concentration in pore water from sediments of 18 tundra lakes in West Alaska and 11 boreal lakes in Central Alaska in...
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Online Access: | https://epic.awi.de/id/eprint/47897/ https://epic.awi.de/id/eprint/47897/1/EUCOP2018_Poster_Lenz.pdf https://epic.awi.de/id/eprint/47897/6/EUCOP2018_Thermokarst_lake_dynamics_Lenz.pdf https://hal.archives-ouvertes.fr/hal-01816115/document https://hdl.handle.net/10013/epic.24f27154-a1f2-4dfd-b81b-1343911a177b |
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ftawi:oai:epic.awi.de:47897 2024-09-15T18:30:01+00:00 Carbon accumulation in thermokarst lakes: A biogeochemical comparison between Alaskan boreal and tundra lake deposits Lenz, Josefine Walter Anthony, Katey M. Winkel, Matthias Liebner, Susanne Fuchs, Matthias Strauss, Jens Maio, Christopher V. Jones, Benjamin M. Grosse, Guido 2018-06-28 application/pdf https://epic.awi.de/id/eprint/47897/ https://epic.awi.de/id/eprint/47897/1/EUCOP2018_Poster_Lenz.pdf https://epic.awi.de/id/eprint/47897/6/EUCOP2018_Thermokarst_lake_dynamics_Lenz.pdf https://hal.archives-ouvertes.fr/hal-01816115/document https://hdl.handle.net/10013/epic.24f27154-a1f2-4dfd-b81b-1343911a177b unknown https://epic.awi.de/id/eprint/47897/1/EUCOP2018_Poster_Lenz.pdf https://epic.awi.de/id/eprint/47897/6/EUCOP2018_Thermokarst_lake_dynamics_Lenz.pdf Lenz, J. orcid:0000-0002-4050-3169 , Walter Anthony, K. M. , Winkel, M. , Liebner, S. , Fuchs, M. orcid:0000-0003-3529-8284 , Strauss, J. orcid:0000-0003-4678-4982 , Maio, C. V. , Jones, B. M. and Grosse, G. orcid:0000-0001-5895-2141 (2018) Carbon accumulation in thermokarst lakes: A biogeochemical comparison between Alaskan boreal and tundra lake deposits , 5th European Conference on Permafrost, Chamonix Mont-Blanc, France, 23 June 2018 - 1 July 2018 . hdl:10013/epic.24f27154-a1f2-4dfd-b81b-1343911a177b info:eu-repo/semantics/openAccess EPIC35th European Conference on Permafrost, Chamonix Mont-Blanc, France, 2018-06-23-2018-07-01Chamonix Mont-Blanc, France Conference notRev info:eu-repo/semantics/conferenceObject 2018 ftawi 2024-06-24T04:21:00Z Thermokarst lakes are widespread features of changing periglacial environments. In this study, we analyze total organic carbon content (TOC), C/N, stable carbon isotopes and methane concentration in pore water from sediments of 18 tundra lakes in West Alaska and 11 boreal lakes in Central Alaska in order to discuss differences in carbon accumulation, sources of organic matter and their role in the carbon cycle. While a wide range of TOC content was measured in West Alaska with highest TOC in lakes that initiated in drained lake basins, some boreal lakes in Central Alaska, like Goldstream Lake show surprisingly low TOC. Similar finding in CH4 concentration suggest that state of permafrost, the age of the lakes and the catchment characteristics have an important influence on sources of organic carbon and, thus, different potential of thermokarst lakes to contribute to the global carbon cycle. Conference Object permafrost Thermokarst Tundra Alaska Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Thermokarst lakes are widespread features of changing periglacial environments. In this study, we analyze total organic carbon content (TOC), C/N, stable carbon isotopes and methane concentration in pore water from sediments of 18 tundra lakes in West Alaska and 11 boreal lakes in Central Alaska in order to discuss differences in carbon accumulation, sources of organic matter and their role in the carbon cycle. While a wide range of TOC content was measured in West Alaska with highest TOC in lakes that initiated in drained lake basins, some boreal lakes in Central Alaska, like Goldstream Lake show surprisingly low TOC. Similar finding in CH4 concentration suggest that state of permafrost, the age of the lakes and the catchment characteristics have an important influence on sources of organic carbon and, thus, different potential of thermokarst lakes to contribute to the global carbon cycle. |
format |
Conference Object |
author |
Lenz, Josefine Walter Anthony, Katey M. Winkel, Matthias Liebner, Susanne Fuchs, Matthias Strauss, Jens Maio, Christopher V. Jones, Benjamin M. Grosse, Guido |
spellingShingle |
Lenz, Josefine Walter Anthony, Katey M. Winkel, Matthias Liebner, Susanne Fuchs, Matthias Strauss, Jens Maio, Christopher V. Jones, Benjamin M. Grosse, Guido Carbon accumulation in thermokarst lakes: A biogeochemical comparison between Alaskan boreal and tundra lake deposits |
author_facet |
Lenz, Josefine Walter Anthony, Katey M. Winkel, Matthias Liebner, Susanne Fuchs, Matthias Strauss, Jens Maio, Christopher V. Jones, Benjamin M. Grosse, Guido |
author_sort |
Lenz, Josefine |
title |
Carbon accumulation in thermokarst lakes: A biogeochemical comparison between Alaskan boreal and tundra lake deposits |
title_short |
Carbon accumulation in thermokarst lakes: A biogeochemical comparison between Alaskan boreal and tundra lake deposits |
title_full |
Carbon accumulation in thermokarst lakes: A biogeochemical comparison between Alaskan boreal and tundra lake deposits |
title_fullStr |
Carbon accumulation in thermokarst lakes: A biogeochemical comparison between Alaskan boreal and tundra lake deposits |
title_full_unstemmed |
Carbon accumulation in thermokarst lakes: A biogeochemical comparison between Alaskan boreal and tundra lake deposits |
title_sort |
carbon accumulation in thermokarst lakes: a biogeochemical comparison between alaskan boreal and tundra lake deposits |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/47897/ https://epic.awi.de/id/eprint/47897/1/EUCOP2018_Poster_Lenz.pdf https://epic.awi.de/id/eprint/47897/6/EUCOP2018_Thermokarst_lake_dynamics_Lenz.pdf https://hal.archives-ouvertes.fr/hal-01816115/document https://hdl.handle.net/10013/epic.24f27154-a1f2-4dfd-b81b-1343911a177b |
genre |
permafrost Thermokarst Tundra Alaska |
genre_facet |
permafrost Thermokarst Tundra Alaska |
op_source |
EPIC35th European Conference on Permafrost, Chamonix Mont-Blanc, France, 2018-06-23-2018-07-01Chamonix Mont-Blanc, France |
op_relation |
https://epic.awi.de/id/eprint/47897/1/EUCOP2018_Poster_Lenz.pdf https://epic.awi.de/id/eprint/47897/6/EUCOP2018_Thermokarst_lake_dynamics_Lenz.pdf Lenz, J. orcid:0000-0002-4050-3169 , Walter Anthony, K. M. , Winkel, M. , Liebner, S. , Fuchs, M. orcid:0000-0003-3529-8284 , Strauss, J. orcid:0000-0003-4678-4982 , Maio, C. V. , Jones, B. M. and Grosse, G. orcid:0000-0001-5895-2141 (2018) Carbon accumulation in thermokarst lakes: A biogeochemical comparison between Alaskan boreal and tundra lake deposits , 5th European Conference on Permafrost, Chamonix Mont-Blanc, France, 23 June 2018 - 1 July 2018 . hdl:10013/epic.24f27154-a1f2-4dfd-b81b-1343911a177b |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1810471511973167104 |