Winter fluxes of methane from Minnesota peatlands (original) (raw)

Abstract

Winter fluxes of methane were investigated in northern Minnesota during 1988–89 and 1989–90. Two bogs and a fen emitted methane throughout the snow-covered season (November through March). Fluxes decreased to a low level of 3–16 mg CH4 m−2 d−1 in late March, reflecting decreasing peat temperatures and (in 1989–90) increasing depth of frost in the peat. Winter fluxes calculated by integration for an open poor fen, an open bog, a forested bog hollow, and a hummock site in the forested bog averaged 49, 12, 13, and 5 mg m−2 d−1, respectively, in 1989–1990 (the year most measurements were made). These comprised 11%, 4%, 15%, and 21% of total annual flux.

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Author notes

1. Nancy B. Dise
   Present address: Norwegian Institute for Water Research (NIVA), Postboks 69 Korsvoll, N-0808, Oslo 8, Norway

Authors and Affiliations

1. Dept. of Ecology, Evolution and Behavior, University of Minnesota, 318 Church St. SE, 55455, Minneapolis, MN, USA
   Nancy B. Dise

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1. Nancy B. Dise
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Dise, N.B. Winter fluxes of methane from Minnesota peatlands.Biogeochemistry 17, 71–83 (1992). https://doi.org/10.1007/BF00002641

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• Received: 08 June 1991
• Accepted: 06 March 1992
• Issue Date: January 1992
• DOI: https://doi.org/10.1007/BF00002641

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