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Title:
Recent change of Arctic tundra ecosystems from a net carbon dioxide sink to a source
Authors:
Oechel, Walter C.; Hastings, Steven J.; Vourlitis, George; Jenkins, Mitchell; Riechers, George; Grulke, Nancy
Affiliation:
AA(San Diego State Univ., CA), AB(San Diego State Univ., CA), AC(San Diego State Univ., CA), AD(San Diego State Univ., CA), AE(California Univ., Riverside), AF(USDA, Forest Service, Corvallis, OR)
Publication:
Nature (ISSN 0028-0836), vol. 361, no. 6412, p. 520-523. (Nature Homepage)
Publication Date:
02/1993
Category:
Geophysics
Origin:
STI
NASA/STI Keywords:
Arctic Regions, Atmospheric Composition, Carbon Dioxide, Climate Change, Ecosystems, Tundra, Carbon Cycle, Carbon Dioxide Concentration, Global Warming, Periodic Variations, Sinks
DOI:
10.1038/361520a0
Bibliographic Code:
1993Natur.361..520O

Abstract

Data are presented which indicate that the tundra on the North Slope of Alaska has become a source of CO2 in the atmosphere. This change coincides with recent warming in the Arctic. The results suggests that tundra ecosystems may exert a positive feedback on atmospheric CO2 and greenhouse warming.
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