Articles | Volume 11, issue 23
Biogeosciences, 11, 6855–6869, 2014
https://doi.org/10.5194/bg-11-6855-2014

Special issue: Climate extremes and biogeochemical cycles in the terrestrial...

Biogeosciences, 11, 6855–6869, 2014
https://doi.org/10.5194/bg-11-6855-2014
Research article
09 Dec 2014
Research article | 09 Dec 2014

How drought severity constrains gross primary production(GPP) and its partitioning among carbon pools in a Quercus ilex coppice?

S. Rambal et al.

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Short summary
The partitioning of carbon input in biomass has a key role in the sink function of forests. We analyzed how carbon is allocated in relation to drought in an evergreen Mediterranean forest. Carbon exchanges were drastically affected by drought. Partitioning was impacted with a hierarchy of responses going from the most affected, the stem, to the least one, the leaves. 40% of carbon input is allocated in biomass and this proportion tended to decrease with drought due to acclimation of respiration.
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