Rachel M Wilson, Malak M Tfaily, Max Kolton, Eric R Johnston, Caitlin Petro, Cassandra A Zalman, Paul J Hanson, Heino M Heyman, Jennifer E Kyle, David W Hoyt, Elizabeth K Eder, Samuel O Purvine, Randall K Kolka, Stephen D Sebestyen, Natalie A Griffiths, Christopher W Schadt, Jason K Keller, Scott D Bridgham, Jeffrey P Chanton, Joel E Kostka
In this study, a suite of complementary environmental geochemical analyses, including NMR and gas chromatography-mass spectrometry (GC-MS) analyses of central metabolites, Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) of secondary metabolites, and lipidomics, was used to investigate the influence of organic matter (OM) quality on the heterotrophic microbial mechanisms controlling peatland CO2 , CH4 , and CO2 :CH4 porewater production ratios in response to climate warming. Our investigations leverage the Spruce and Peatland Responses under Changing Environments (SPRUCE) experiment, where air and peat warming were combined in a whole-ecosystem warming treatment...
June 22, 2021: Proceedings of the National Academy of Sciences of the United States of America