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Low impact of dry conditions on the CO2 exchange of a Northern-Norwegian blanket bog

Lund, Magnus LU ; Bjerke, J. W.; Drake, B. G.; Engelsen, O.; Hansen, G. H.; Parmentier, Frans-Jan LU ; Powell, T. L.; Silvennoinen, H.; Sottocornola, M. and Tommervik, H., et al. (2015) In Environmental Research Letters 10(2).
Abstract
Northern peatlands hold large amounts of organic carbon (C) in their soils and are as such important in a climate change context. Blanket bogs, i.e. nutrient-poor peatlands restricted to maritime climates, may be extra vulnerable to global warming since they require a positive water balance to sustain their moss dominated vegetation and C sink functioning. This study presents a 4.5 year record of land-atmosphere carbon dioxide (CO2) exchange from the Andoya blanket bog in northern Norway. Compared with other peatlands, the Andoya peatland exhibited low flux rates, related to the low productivity of the dominating moss and lichen communities and the maritime settings that attenuated seasonal temperature variations. It was observed that... (More)
Northern peatlands hold large amounts of organic carbon (C) in their soils and are as such important in a climate change context. Blanket bogs, i.e. nutrient-poor peatlands restricted to maritime climates, may be extra vulnerable to global warming since they require a positive water balance to sustain their moss dominated vegetation and C sink functioning. This study presents a 4.5 year record of land-atmosphere carbon dioxide (CO2) exchange from the Andoya blanket bog in northern Norway. Compared with other peatlands, the Andoya peatland exhibited low flux rates, related to the low productivity of the dominating moss and lichen communities and the maritime settings that attenuated seasonal temperature variations. It was observed that under periods of high vapour pressure deficit, net ecosystem exchange was reduced, which was mainly caused by a decrease in gross primary production. However, no persistent effects of dry conditions on the CO2 exchange dynamics were observed, indicating that under present conditions and within the range of observed meteorological conditions the Andoya blanket bog retained its C uptake function. Continued monitoring of these ecosystem types is essential in order to detect possible effects of a changing climate. (Less)
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publication status
published
subject
keywords
peatland, carbon, blanket bog, eddy covariance, climate change, net, ecosystem exchange
in
Environmental Research Letters
volume
10
issue
2
publisher
IOP Publishing
external identifiers
  • wos:000350573500025
  • scopus:84923816872
ISSN
1748-9326
DOI
10.1088/1748-9326/10/2/025004
language
English
LU publication?
yes
id
5ebff6fd-f032-4b8f-970c-cd198043fb74 (old id 5297290)
date added to LUP
2015-04-27 09:13:08
date last changed
2017-10-22 04:10:50
@article{5ebff6fd-f032-4b8f-970c-cd198043fb74,
  abstract     = {Northern peatlands hold large amounts of organic carbon (C) in their soils and are as such important in a climate change context. Blanket bogs, i.e. nutrient-poor peatlands restricted to maritime climates, may be extra vulnerable to global warming since they require a positive water balance to sustain their moss dominated vegetation and C sink functioning. This study presents a 4.5 year record of land-atmosphere carbon dioxide (CO2) exchange from the Andoya blanket bog in northern Norway. Compared with other peatlands, the Andoya peatland exhibited low flux rates, related to the low productivity of the dominating moss and lichen communities and the maritime settings that attenuated seasonal temperature variations. It was observed that under periods of high vapour pressure deficit, net ecosystem exchange was reduced, which was mainly caused by a decrease in gross primary production. However, no persistent effects of dry conditions on the CO2 exchange dynamics were observed, indicating that under present conditions and within the range of observed meteorological conditions the Andoya blanket bog retained its C uptake function. Continued monitoring of these ecosystem types is essential in order to detect possible effects of a changing climate.},
  articleno    = {025004},
  author       = {Lund, Magnus and Bjerke, J. W. and Drake, B. G. and Engelsen, O. and Hansen, G. H. and Parmentier, Frans-Jan and Powell, T. L. and Silvennoinen, H. and Sottocornola, M. and Tommervik, H. and Weldon, S. and Rasse, D. P.},
  issn         = {1748-9326},
  keyword      = {peatland,carbon,blanket bog,eddy covariance,climate change,net,ecosystem exchange},
  language     = {eng},
  number       = {2},
  publisher    = {IOP Publishing},
  series       = {Environmental Research Letters},
  title        = {Low impact of dry conditions on the CO2 exchange of a Northern-Norwegian blanket bog},
  url          = {http://dx.doi.org/10.1088/1748-9326/10/2/025004},
  volume       = {10},
  year         = {2015},
}