Abstract
WETLANDS, both natural and agricultural, contribute an estimated 40 to 50% of the total methane emitted to the atmosphere each year. Recent efforts in atmospheric modelling1 and attempts to constrain CH4 source strengths2 have indicated the need to delineate the processes responsible for the large variations in emission rates found within and across wetland types. Numerous biogeochemical factors are known to affect the activity of methanogenic bacteria3,4 and although there has been some success in relating water level5â7 and temperature8,9 to CH4 emissions within particular systems, these variables are insufficient for predicting emissions across a variety of wetlands2,10. From simultaneous measurements of CO2 and CH4 exchange in wetlands extending from subarctic peatlands to subtropical marshes, we report here a positive correlation between CH4 emission and net ecosystem production and suggest that net ecosystem production is a master variable, integrating many factors which control CH4 emission in vegetated wetlands. We find that about 3 per cent of the daily net ecosystem production is emitted back to the atmosphere as CH4. With projected stimulation of primary production and soil microbial activity in wetlands associated with elevated atmospheric CO2 concentrations11, we envisage the potential for increasing CH4 emissions from inundated wetlands, further enhancing the greenhouse effect.
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References
Taylor, J. A., Brasseur, G. P., Zimmerman, P. R. & Cicerone, R. J. J. geophys. Res. 96, 3013â3044 (1991).
Aselmann, I. & Crutzen, P. J. J. atmos. Chem. 8, 307â358 (1989).
Rudd, J. W. M. & Taylor, C. D. Adv. aquat. Microbiol. 2, 77â150 (1980).
Conrad, R. in Exchange of Trace Gases between Terrestrial Ecosystems and the Atmosphere (eds Andreae, M. O. & Schimel, D. S.) 39â58 (Wiley, New York, 1989).
Harriss, R. C., Sebacher, D. I. & Day, F. P. Nature 297, 673â674 (1982).
Moore, T., Roulet, N. & Knowles, R. Global biogeochem. Cycles 4, 29â46 (1990).
Roulet, N. T., Ash, R. & Moore, T. R. J. geophys. Res. 97, 3739â3749 (1992).
Crill, P. M. et al. Global biogeochem. Cycles 2, 371â384 (1988).
Schutz, H., Holzapfel-Pschorn, A., Conrad, R., Rennenberg, H. & Seiler, W. J. geophys. Res. 94, 16405â16416 (1989).
Whalen, S. C. & Reeburgh, W. S. Global biogeochem. Cycles 6, 139â160 (1992).
Lamborg, M. R., Hardy, R. W. F. & Paul, E. A. in CO2 and Plants: The Response of Plants to Rising Levels of Atmospheric Carbon Dioxide (ed. Lemon, E. R.) 131â176 (AAAS Selected Symp. 84, 1983).
Whiting, G. J., Chanton, J., Bartlett, D. & Happell, J. J. geophys. Res. 96, 13067â13071 (1991).
Whiting, G. J. & Chanton, J. P. Global biogeochem. Cycles 6, 225â231 (1992).
Whiting, G. J., Bartlett, D. S., Fan, S. M., Bakwin, P. & Wofsy, S. J. geophys. Res. 97, 16671â16680 (1992).
Bartlett, K. B., Crill, P. M., Sass, R. L., Harriss, R. C. & Dise, N. B. J. geophys. Res. 97, 16645â16660 (1992).
Fan, S. M. et al. J. geophys. Res. 97, 16627â16643 (1992).
Seiler, W., Holzapfel-Pschorn, A., Conrad, R. & Scharffe, D. J. atmos. Chem. 1, 241â268 (1984).
Holzapfel-Pschorn, A., Conrad, R. & Seiler, W. Plant and Soil 92, 223â233 (1986).
Van Veen, J. A., Merckx, R. & Van de Geijn, S. C. Plant and Soil 115, 179â188 (1989).
Cicerone, R. J., Delwiche, C. C., Tyler, S. C. & Zimmerman, P. R. Global biogeochem. Cycles 6, 233â248 (1992).
Valentine, D. W., Holland, E. A. & Schimel, D. S. J. geophys. Res. (in the press).
Sass, R. L., Fisher, F. M. & Harcombe, P. A. Global biogeochem. Cycles 4, 47â68 (1990).
Jeris, J. S. & McCarty, P. L. J. water poll. contr. Fed. 37, 178â192 (1965).
Hale, M. G., Moore, L. D. & Griffin, G. J. in Interactions Between Non-pathogenic Soil Microorganisms and Plants (eds Dommergues, Y. R. & Krupa, S. V.) 163â203 (Elsevier, New York, 1978).
Chanton, J. P. & Dacey, J. W. H. in Trace Gas Emissions from Plants (eds Sharkey, T., Holland, E. & Mooney, H.) 65â92 (Academic, San Diego, 1991).
Schutz, H., Schroder, P. & Rennenberg, H. in Trace Gas Emissions from Plants (eds Sharkey, T., Holland, E. & Mooney, H.) 29â64 (Academic, San Diego, 1991).
Nouchi, I., Mariko, S. & Aoki, K. Plant Physiol. 94, 59â66 (1990).
Chanton, J. P., Whiting, G. J., Showers, W. J. & Crill, P. M. Global biogeochem. Cycles 6, 15â31 (1992).
Whigham, D. F. & Simpson, R. L. Aquat. Bot. 5, 355â364 (1978).
Gross, M. F., Hardisky, M. A., Wolf, P. L. & Klemas, V. Estuaries 14, 180â191 (1991).
Arenovski, A. L. & Howes, B. L. Oecologia 90, 316â322 (1992).
Klinger, L. F., Zimmerman, P. R., Greenberg, J. P., Heidt, L. E. & Guenther, A. B. J. geophys. Res. (in the press).
Conrad, R., Schutz, H. & Babbel, M. FEMS microbiol. Ecol. 45, 281â289 (1987).
Kelly, C. A. & Chynoweth, D. P. Limnol. Oceanogr. 26, 891â897 (1981).
Yavitt, J. B., Lang, G. E. & Sexstone, A. J. J. geophys. Res. 95, 22463â22474 (1990).
Svensson, B. H. Ecol. Bull. 30, 235â250 (1980).
Svensson, B. H. & Rosswall, T. Ecol. Bull. 30, 283â301 (1980).
Morrissey, L. A. & Livingston, G. P. J. geophys. Res. 97, 16661â16670 (1992).
Cihlar, J., Caramori, P. H., Schuepp, P. H., Desjardins, R. L. & MacPherson, J. I. J. geophys. Res. 97, 18515â18521 (1992).
Goward, S. N., Tucker, C. J. & Dye, D. G. Vegetatio 64, 3â14 (1985).
Chanton, J. P., Whiting, G. J., Happell, J. D. & Gerard, G. Aquat. Bot. (in the press).
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Whiting, G., Chanton, J. Primary production control of methane emission from wetlands. Nature 364, 794â795 (1993). https://doi.org/10.1038/364794a0
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DOI: https://doi.org/10.1038/364794a0