Abstract
In arctic ecosystems, winter soil respiration can contribute substantially to annual CO2 release, yet the source of this C is not clear. We analysed the C-14 content of C released from plant-free plots in mountain birch forest and tundra-heath. Winter-respired CO2 was found to be a similar age (tundra) or older (forest) than C released during the previous autumn. Overall, our study demonstrates that the decomposition of older C can continue during the winter, in these two contrasting arctic ecosystems. (c) 2013 Elsevier Ltd. All rights reserved.
Original language | English |
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Pages (from-to) | 1-4 |
Number of pages | 4 |
Journal | Soil Biology and Biochemistry |
Volume | 63 |
DOIs | |
Publication status | Published - Aug 2013 |
Keywords
- (CO2)-C-14
- Passive sampling
- Mountain birch
- Radiocarbon
- Tree-line
- Tundra-heath
- Winter respiration
- TEMPERATURE SENSITIVITY
- MOLECULAR-SIEVE
- VEGETATION TYPE
- ORGANIC-CARBON
- CLIMATE-CHANGE
- RESPIRATION
- DECOMPOSITION
- REGION
- TUNDRA
- STOCKS