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Thawing sub-arctic permafrost: Effects on vegetation and methane emissions

Christensen, Torben LU ; Johansson, Torbjörn LU ; Åkerman, Jonas LU ; Mastepanov, Mikhail LU ; Malmer, Nils LU ; Friborg, T; Crill, P and Svensson, B H (2004) In Geophysical Research Letters 31(4). p.04501-04501
Abstract
Ecosystems along the 0degreesC mean annual isotherm are arguably among the most sensitive to changing climate and mires in these regions emit significant amounts of the important greenhouse gas methane (CH4) to the atmosphere. These CH4 emissions are intimately related to temperature and hydrology, and alterations in permafrost coverage, which affect both of those, could have dramatic impacts on the emissions. Using a variety of data and information sources from the same region in subarctic Sweden we show that mire ecosystems are subject to dramatic recent changes in the distribution of permafrost and vegetation. These changes are most likely caused by a warming, which has been observed during recent decades. A detailed study of one mire... (More)
Ecosystems along the 0degreesC mean annual isotherm are arguably among the most sensitive to changing climate and mires in these regions emit significant amounts of the important greenhouse gas methane (CH4) to the atmosphere. These CH4 emissions are intimately related to temperature and hydrology, and alterations in permafrost coverage, which affect both of those, could have dramatic impacts on the emissions. Using a variety of data and information sources from the same region in subarctic Sweden we show that mire ecosystems are subject to dramatic recent changes in the distribution of permafrost and vegetation. These changes are most likely caused by a warming, which has been observed during recent decades. A detailed study of one mire show that the permafrost and vegetation changes have been associated with increases in landscape scale CH4 emissions in the range of 22-66% over the period 1970 to 2000. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Geophysical Research Letters
volume
31
issue
4
pages
04501 - 04501
publisher
American Geophysical Union
external identifiers
  • wos:000189373100002
  • scopus:2542451846
ISSN
1944-8007
DOI
10.1029/2003GL018680
language
English
LU publication?
yes
id
d1d490c3-4188-427a-8fbf-bd5dc9d25440 (old id 137523)
date added to LUP
2007-07-02 08:59:36
date last changed
2017-12-17 03:53:41
@article{d1d490c3-4188-427a-8fbf-bd5dc9d25440,
  abstract     = {Ecosystems along the 0degreesC mean annual isotherm are arguably among the most sensitive to changing climate and mires in these regions emit significant amounts of the important greenhouse gas methane (CH4) to the atmosphere. These CH4 emissions are intimately related to temperature and hydrology, and alterations in permafrost coverage, which affect both of those, could have dramatic impacts on the emissions. Using a variety of data and information sources from the same region in subarctic Sweden we show that mire ecosystems are subject to dramatic recent changes in the distribution of permafrost and vegetation. These changes are most likely caused by a warming, which has been observed during recent decades. A detailed study of one mire show that the permafrost and vegetation changes have been associated with increases in landscape scale CH4 emissions in the range of 22-66% over the period 1970 to 2000.},
  author       = {Christensen, Torben and Johansson, Torbjörn and Åkerman, Jonas and Mastepanov, Mikhail and Malmer, Nils and Friborg, T and Crill, P and Svensson, B H},
  issn         = {1944-8007},
  language     = {eng},
  number       = {4},
  pages        = {04501--04501},
  publisher    = {American Geophysical Union},
  series       = {Geophysical Research Letters},
  title        = {Thawing sub-arctic permafrost: Effects on vegetation and methane emissions},
  url          = {http://dx.doi.org/10.1029/2003GL018680},
  volume       = {31},
  year         = {2004},
}