Here
we use the severe heat and drought event in Europe
from summer 2003 as a natural experiment to study the impact of a climatic
extreme event on ecosystem physiology and its feedback to the atmosphere. The
combination of continuous eddy covariance and tree growth measurements at two nearby
located deciduous forests showed a large reduction in carbon uptake during the
drought (-30%) and a strong carry-over effect into the next year. Both forests,
however, responded differently, although climatic forcing was almost identical.
Species composition and site condition of the ecosystems seemed to play a major
role in the ecosystems response to the drought.
Author: A. Knohl, W. Kutsch, M. Mund, P. Anthoni, O. Kolle, et al (aknohl at bgc-jena dot mpg dot de)
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