Münchberger, Wiebke; Knorr, Klaus-Holger; Blodau, Christian; Pancotto, Verónica A.; Kleinebecker, Till; Hanneforth, Till: Zero to moderate methane emissions in a densely rooted, pristine Patagonian bog – biogeochemical controls as revealed from isotopic evidence
Inhalt
- Introduction
- Material and methods
- Description of the study site
- Sampling and analysis of solid peat and root biomass
- Environmental variables
- Chamber measurements and analyses of soil--atmosphere CH4 fluxes
- Depth profiles of peat pore water concentrations
- Results
- Characteristics of solid peat and root biomass
- Environmental conditions and potential controls on CH4 fluxes
- Soil--atmosphere CH4 fluxes and features of microforms possibly affecting CH4 emissions
- Pore water CH4 and DIC concentration profiles
- Carbon isotopic values in pore water and apparent fractionation
- Hydrogen, oxygen and sulfate concentrations in pore water profiles
- Discussion
- Environmental controls on CH4 emissions
- Astelia lawns -- zero emission scenario
- Pools -- low-emission scenario
- Sphagnum and Donatia lawns -- low- to moderate-emission scenario
- Implications for ecosystem CH4 emissions from Patagonian cushion bogs
- Conclusion
- Data availability
- Supplement
- Author contributions
- Competing interests
- Acknowledgements
- References