Interactive comment on “Anaerobic oxidation of methane in grassland soils used for cattle husbandry” by A. Bannert et al
نویسنده
چکیده
My main concern relates to the chemotaxonomic interpretation of PLFA, particularly of 16:1!7. 16:1!7 (syn. 16:1_9) is in fact a ubiquitous FA in microbial systems and can not serve as biomarker strictu sensu. Anyway, despite the fact that some of the conclusions made by Raghoebarsing et al. (2006) were wrong (meaning the co-existence between archaea and bacteria), the result, which they gained from their 13CH4 labelling experiment, can be used also for the interpretation of the data presented here. Although 16:1!7 is very common, it was also observed as most enriched FA after 13CH4 addition by Raghoebarsing et al (similarities hold also for n14:0, 18:1!7 etc.). This can be used as a support for nitrate/nitrite based AOM and the very weak line of evidence favoring growth of aerobic MO should be omitted (as other marker PLFA of type I and type II
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Interactive comment on “Anaerobic oxidation of methane in grassland soils used for cattle
The paper “Anaerobic oxidation of methane in grassland soils used for cattle husbandry” reports interesting laboratory data showing methane oxidation in an agricultural soil under anaerobic conditions. Moreover, by using 13CH4 the authors are able to trace the carbon into PLFA and make some interpretation on methanotrophic sources. In concert with geochemical data and calculations, it appears p...
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The paper “Anaerobic oxidation of methane in grassland soils used for cattle husbandry” reports interesting laboratory data showing methane oxidation in an agricultural soil under anaerobic conditions. Moreover, by using 13CH4 the authors are able to trace the carbon into PLFA and make some interpretation on methanotrophic sources. In concert with geochemical data and calculations, it appears p...
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