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Arctic Tundra: A Source or Sink for Atmospheric Carbon Dioxide in a Changing Environment?
W. D. Billings, J. O. Luken, D. A. Mortensen and K. M. Peterson
Vol. 53, No. 1 (1982), pp. 7-11
Stable URL: http://www.jstor.org/stable/4216641
Page Count: 5
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Intact cores from the wet coastal arctic tundra at Barrow, Alaska, were used as microcosms in the measurement of CO₂ fluxes between peat, vegetation, and atmosphere under controlled conditions. Net ecosystem CO₂ uptake was almost twice as high at present summer temperatures (4° C) than at 8°. Lowering the water table from the soil surface to -5 cm also had a pronounced effect in decreasing net ecosystem carbon storage. Warming of the tundra climate could change this ecosystem from a sink for atmospheric CO₂ to a source.
Oecologia © 1982 Springer