Open AccessMicrobial oxidation of CH 4 at different temperatures in landfill cover soils
Author(s) -
Börjesson Gunnar,
Sundh Ingvar,
Svensson Bo
Publication year - 2004
Publication title -
fems microbiology ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.377
H-Index - 155
eISSN - 1574-6941
pISSN - 0168-6496
DOI - 10.1016/j.femsec.2004.02.006
Subject(s) - biology , soil water , methanotroph , sewage sludge , environmental chemistry , sewage , anaerobic oxidation of methane , cover (algebra) , bacteria , methane , ecology , environmental engineering , environmental science , chemistry , mechanical engineering , engineering , genetics
Biological oxidation of CH 4 is an important constraint on the emission of this gas from areas, such as landfills to the atmosphere. We studied the effect of temperature on methanotrophic bacteria in three different landfill cover soils, incubated in the laboratory. In samples of a young cover, consisting of wood chips and sewage sludge, the phospholipid fatty acids (PLFAs), regarded as biomarkers for type I methanotrophs (16:1ω5t, 16:1ω6c, 16:1ω8c), primarily increased at low temperatures (5–10 °C). On the other hand, the PLFA marker for type II methanotrophs (18:1ω8c) was highly elevated only at 20 °C. These results suggest that temperature can determine the selection of methanotroph populations.