title: Production and consumption of methane in freshwater lake ecosystems.
abstract: The atmospheric concentration of methane (CH(4)), a major greenhouse gas, is mainly controlled by the activities of methane-producing (methanogens) and methane-consuming (methanotrophs) microorganisms. Freshwater lakes are identified as one of the main CH(4) sources, as it was estimated that they contribute to 6-16% of natural CH(4) emissions. It is therefore critical to better understanding the biogeochemical cycling of CH(4) in these ecosystems. In this paper, the effects of environmental factors on methanogenic and methanotrophic rates are reviewed and an inventory of the methanogens and methanotrophs at the genus/species level in freshwater lakes is given. We focus on the anaerobic oxidation of methane, which is a still poorly known process but increasingly reported in freshwater lakes.
authors.affiliation: Clermont Université, Universite Blaise Pascal, Laboratoire Microorganismes: Génome et Environnement, BP 10448, UMR CNRS 6023, 63000 Clermont-Ferrand, France. guillaume.borrel@univ-bpclermont.fr
authors.forename: Guillaume
authors.initials: G
authors.lastname: Borrel
authors.forename: Didier
authors.initials: D
authors.lastname: Jézéquel
authors.forename: Corinne
authors.initials: C
authors.lastname: Biderre-Petit
authors.forename: Nicole
authors.initials: N
authors.lastname: Morel-Desrosiers
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Morel
authors.forename: Pierre
authors.initials: P
authors.lastname: Peyret
authors.forename: Gérard
authors.initials: G
authors.lastname: Fonty
authors.forename: Anne-Catherine
authors.initials: AC
authors.lastname: Lehours
mesh_terms: D000693:Anaerobiosis; D001105:Archaea / Q000145:classification / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D001420:Bacteria, Aerobic / Q000145:classification / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D001421:Bacteria, Anaerobic / Q000145:classification / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D017753:Ecosystem; D007501:Iron / Q000378:metabolism; D060106:Lakes / Q000382:microbiology*; D008345:Manganese / Q000378:metabolism; D008697:Methane / Q000378:metabolism; D059013:Microbial Consortia / Q000502:physiology*; D009566:Nitrates / Q000378:metabolism; D010084:Oxidation-Reduction; D010100:Oxygen / Q000378:metabolism; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000032:analysis / Q000235:genetics; D013431:Sulfates / Q000378:metabolism; D013696:Temperature; D014871:Water Microbiology
chemical_list: D009566:Nitrates; D012336:RNA, Ribosomal, 16S; D013431:Sulfates; D008345:Manganese; D007501:Iron; D008697:Methane; D010100:Oxygen