Articles | Volume 12, issue 6
https://doi.org/10.5194/bg-12-1799-2015
https://doi.org/10.5194/bg-12-1799-2015
Research article
 | 
18 Mar 2015
Research article |  | 18 Mar 2015

Drivers of long-term variability in CO2 net ecosystem exchange in a temperate peatland

C. Helfter, C. Campbell, K. J. Dinsmore, J. Drewer, M. Coyle, M. Anderson, U. Skiba, E. Nemitz, M. F. Billett, and M. A. Sutton

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Cited articles

Aurela, M., Laurila, T., and Tuovinen, J. P.: Seasonal CO2 balances of a subarctic mire, J. Geophys. Res.-Atmos., 106, 1623–1637, https://doi.org/10.1029/2000jd900481, 2001.
Aurela, M., Lohila, A., Tuovinen, J.-P., Hatakka, J., Riutta, T., and Laurila, T.: Carbon dioxide exchange on a northern boreal fen, Boreal Environ. Res., 14, 699–710, 2009.
Bates, J. W., Thompson, K., and Grime, J. P.: Effects of simulated long-term climatic change on the bryophytes of a limestone grassland community, Glob. Change Biol., 11, 757–769, https://doi.org/10.1111/j.1365-2486.2005.00953.x, 2005.
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The CO2 sink strength of a temperate peatland in SE Scotland exhibited large inter-annual variability which was well-correlated to the length of the growing season. Mean winter air temperature explained 87% of the inter-annual variability in the sink strength of the following summer, indicating a phenological memory effect. Autotrophic respiration is thought to be dominant, but heterotrophic processes might have been enhanced during dry spells increasing the loss of CO2 to the atmosphere.
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