February 28, 2007
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Published July 1988 through June 1999
FROM VOLUME 8, NUMBER 6, JUNE 1995
IMPACTS OF CLIMATE CHANGE: CARBON CYCLE
Flushing of Pore Water in Peatlands," D.I. Siegel (Dept. Earth Sci.,
Syracuse Univ., Syracuse NY 13244), A.S. Reeve et al.,
Nature, 374(6522), 531-533, Apr. 6, 1995.
Reports on the response of groundwater flow and porewater chemistry in the
Glacial Lake Agassiz peatlands of northern Minnesota to the regional drought
cycle. Periods of drought lasting for at least 3-5 years produce striking
changes in the chemistry of the pore water and directly affect the rates of
fermentation and methanogenesis and the export of dissolved carbon compounds.
"Responses in NPP
and Carbon Stores of the Northern Biomes to a CO2-Induced Climatic
Change, as Evaluated by the Frankfurt Biosphere Model (FBM)," M.K.B. Lüdeke
(Inst. Phys. Chem., J.W. Goethe Univ., Marie Curie Str. 11, 60439 Frankfurt am
Main, Ger.), S. Dönges et al., Tellus,
47B, 191-205, 1995.
For tripled CO2, the prediction for a pure climate effect is a
22% decrease of net primary production (NPP), resulting in a 170 Gt carbon
source. Considering a CO2-induced enhancement of maximum
photosynthesis, the pure climate effect is more than compensated, with a NPP
increase of 9% and a total carbon sink of 50 Gt.
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