title: Different temperature optima for methane formation when enrichments from Acid peat are supplemented with acetate or hydrogen.
abstract: Laboratory studies of methane formation in peat samples from an acid subarctic mire in Sweden indicated the presence of a low-temperature-adapted methanogenic flora. Enrichment culture studies with ethanol, acetate, hydrogen, or a combination of these as substrate for methane formation provided evidence for the existence of two different methanogenic populations in the peat: one, unaffected by hydrogen and using acetate, with a temperature optimum at 20 degrees C; the other, oxidizing hydrogen, with a temperature optimum at ca. 28 degrees C.
authors.affiliation: Department of Microbiology, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden.
authors.forename: B H
authors.initials: BH
authors.lastname: Svensson