Abstract
ARCTIC tundra has been a net sink for carbon dioxide during historic and recent geological times1–4, and large amounts of carbon are stored in the soils of northern ecosystems. Many regions of the Arctic are warmer now than they have been in the past5–10, and this warming may cause the soil to change from a carbon dioxide sink to a source by lowering the water table11–12, thereby accelerating the rate of soil decomposition (CO2 source)3,13–15 so that this dominates over photosynthesis (CO2 sink). Here we present data indicating that the tundra on the North Slope of Alaska has indeed become a source of carbon dioxide to the atmosphere. This change coincides with recent warming in the Arctic, whether this is due to increases in greenhouse gas concentrations in the atmosphere or to some other cause. Our results suggest that tundra ecosystems may exert a positive feedback on atmospheric carbon dioxide and greenhouse warming.
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References
- 1.
Miller, P. C. (ed.) in Carbon Balance in Northern Ecosystems and the Potential Effect of Carbon Dioxide Induced Climate Change (CONF-800033118) (NTIS, Springfield, Virginia, 1981).
- 2.
Miller, P. C., Kendall, R. & Oechel, W. C. Simulation 40, 119–131 (1983).
- 3.
Gorham, E. Ecol. Applic. 1, 182–195 (1991).
- 4.
Oechel, W. C. & Billings, W. D. in Arctic Physiological Processes in a Changing Climate (eds Chapin, F. S. III, Jeffries, R., Reynolds, J., Shaver, G. & Svoboda, J.) 139–169 (Academic, New York, 1991).
- 5.
Mitchell, J. F. B., Manabe, S., Meleshko, V. & Tokioka, T. in Climate Change: the IPCC Scientific Assessment 1990 (Cambridge Univ. Press, Cambridge, 1990).
- 6.
Lachenbruch, A. H. & Marshall, B. V. Science 234, 689–696 (1986).
- 7.
Jones, P. D. & Wigley, T. M. L. Scient. Am. 263, 84–91 (1990).
- 8.
Wiley, T. M. L., Jones, P. D. & Kelly, P. M. Nature 283, 17–21 (1980).
- 9.
Hengeveld, H. A State of the Environment Report, No. 91-2 (Atmospheric Environment Service, Environment Canada, 1991).
- 10.
Beltrami, H. & Mareschal, J. C. Geophys. Res. Let. 18, 605–608 (1991).
- 11.
Wigley, T. M. L. J. global biogeochem. Cycles 5, 373–382 (1991).
- 12.
Post, W. M. ORNL/ TM-11457 (Oak Ridge National Laboratory, Oak Ridge TN, 1990).
- 13.
Billings, W. C., Luken, J. O., Mortensen, D. A. & Peterson, K. M. Oecologia 52, 7–11 (1982).
- 14.
Billings, W. D., Peterson, K. M., Luken, J. O. & Mortenson, D. A. Oecologia 65, 26–29 (1984).
- 15.
Clymo, R. S. Phil. Trans. R. Soc. Lond. 303, 605–654 (1984).
- 16.
Brown, S., Lugo, A. E. & Wisniewski, J. Science 257, 11 (1992).
- 17.
Tans, P., Fung, I. & Takahashi, T. Science 247, 1431–1439 (1990).
- 18.
Sarmiento, J. L., Orr, J. C. & Siegenthaler, U. Geophys. Res. 97, 3621–3645 (1992).
- 19.
Wisniewski, J. & Lugo, A. E. (eds) Water Air Soil Pollut. 64 (1, 2) (1992).
- 20.
Lugo, A. E. & Brown, S. Forest Ecol. Manage. (in the press).
- 21.
Schell, D. M. Science 219, 1068 (1983).
- 22.
Schell, D. M. & Ziemann, P. J. in Permafrost, 4th int. Conf. (National Academy Press, Washington DC, 1983).
- 23.
Schlesinger, M. E. & Mitchell, J. F. B. Rev. Geophys. 25, 760–798 (1987).
- 24.
Chapin, F. S. III, Miller, P. C., Billings, W. D. & Coyne P. I. An Arctic Ecosystem, the Coastal Tundra at Barrow, Alaska (eds Brown, J., Miller, P. C., Tieszen, L. L. & Bunnell, F. K.) 458–484 (Dowden, Hutchinson & Ross, Stroudsburg PA, 1980).
- 25.
Coyne, P. I. & Kelley, J. J. J. appl. Ecol. 12, 587–611 (1975).
- 26.
Dutton, E. G. & Endres, D. J. Arct. Alp. Res. 23, 115–119 (1991).
- 27.
Hansen, J. & Lebedeff, S. J. geophys. Res. 92, 13345–13372 (1987).
- 28.
Hansen, J. & Lebedeff, S. Geophys. Lett. 15, 323–326 (1988).
- 29.
Folland, C. K., Karl, T. R. & Vinnikov, K. Ya. in Climate Change: the IPCC Scientific Assessment 1990 (Cambridge Univ. Press, Cambridge 1990).
- 30.
Wigley, T. M. L. & Barnett, T. P. in Climate Change: the IPCC Scientific Assessment 1990 (Cambridge Univ. Press, Cambridge, 1990).
- 31.
Oechel, W. C. et al. Funct. Ecol. 6, 86–100 (1992).
- 32.
Vourlitis, G. L., Oechel, W. C., Hastings, S. J. & Jenkins, M. A. Funct. Ecol. (in the press).
- 33.
Marion, G. M. & Oechel, W. C. Holocene (in the press).
- 34.
Lachenbruch, A. H., Cladouhos, T. T. & Saltus, R. W. in Permafrost Temperature and the Changing Climate, Proc. 5th int. Conf. Permafrost (ed. Senneset, K.) (Tapir, Trondheim, 1988).
- 35.
Kling, G. W., Kipphut, G. W. & Miller, M. C. Science 251, 298–301 (1991).
- 36.
Tissue, D. T. & Oechel, W. C. Ecology 68, 401–410 (1987).
Author information
Affiliations
Systems Ecology Research Group and Department of Biology, San Diego State University, San Diego, California 92182, USA
- Walter C. Oechel
- , Steven J. Hastings
- , George Vourlrtis
- & Mitchell Jenkins
Statewide Air Pollution Research Center, University of California, Riverside, California 92521, USA
- George Riechers
USDA Forest Service, 3200 Southwest Jefferson Way, Corvallis, Oregon 97331, USA
- Nancy Grulke
To whom correspondence should be addressed.
- Walter C. Oechel
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