Articles | Volume 12, issue 6
Biogeosciences, 12, 1799–1811, 2015
https://doi.org/10.5194/bg-12-1799-2015
Biogeosciences, 12, 1799–1811, 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 et al.

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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.
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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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