Microbial oxidation of CH4 at high partial pressures in an organic landfill cover soil under different moisture regimes
✍ Scribed by Gunnar Börjesson; Ingvar Sundh; Anders Tunlid; Åsa Frostegård; Bo H Svensson
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 529 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0168-6496
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✦ Synopsis
The uptake and utilization of CH R at high concentrations (5^18% vol.) and different soil moistures were followed for samples from a landfill cover soil with a high organic matter content. Measurements of the utilization of CH R and O P , and production of CO P indicated that the activity of methanotrophic organisms accounted for most of the O P respiration. At water saturation, CH R oxidation rates decreased with time, probably because xr R accumulated. Denitrification rates, estimated based on both N P and N P O production, were positively related to soil moisture and only slightly influenced by the extent of CH R oxidation. Total phospholipid fatty acid concentrations increased, and concentrations of phospholipid fatty acids, typical for obligate methanotrophic bacteria (e.g. 16:1g8 and 18:1g8), increased in the CH R -amended samples, indicating growth of both type I and type II methanotrophs.