Table_2_Microbial Community Analyses Inform Geochemical Reaction Network Models for Predicting Pathways of Greenhouse Gas Production.XLSX
The mechanisms, pathways, and rates of CO 2 and CH 4 production are central to understanding carbon cycling and greenhouse gas flux in wetlands. Thawing permafrost regions are of particular interest because they are disproportionally affected by climate warming and store large reservoirs of organic...
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ftfrontimediafig:oai:figshare.com:article/7925186 2023-05-15T17:54:28+02:00 Table_2_Microbial Community Analyses Inform Geochemical Reaction Network Models for Predicting Pathways of Greenhouse Gas Production.XLSX Rachel M. Wilson Rebecca B. Neumann Kelsey B. Crossen Nicole M. Raab Suzanne B. Hodgkins Scott R. Saleska Ben Bolduc Ben J. Woodcroft Gene W. Tyson Jeffrey P. Chanton Virginia I. Rich 2019-03-29T15:09:23Z https://doi.org/10.3389/feart.2019.00059.s002 https://figshare.com/articles/Table_2_Microbial_Community_Analyses_Inform_Geochemical_Reaction_Network_Models_for_Predicting_Pathways_of_Greenhouse_Gas_Production_XLSX/7925186 unknown doi:10.3389/feart.2019.00059.s002 https://figshare.com/articles/Table_2_Microbial_Community_Analyses_Inform_Geochemical_Reaction_Network_Models_for_Predicting_Pathways_of_Greenhouse_Gas_Production_XLSX/7925186 CC BY 4.0 CC-BY Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change greenhouse gas flux peatlands organic matter decomposition climate warming carbon cycling Dataset 2019 ftfrontimediafig https://doi.org/10.3389/feart.2019.00059.s002 2019-04-03T22:59:07Z The mechanisms, pathways, and rates of CO 2 and CH 4 production are central to understanding carbon cycling and greenhouse gas flux in wetlands. Thawing permafrost regions are of particular interest because they are disproportionally affected by climate warming and store large reservoirs of organic C that may be readily converted to CO 2 and CH 4 upon thaw. This conversion is accomplished by a community of microorganisms interacting in complex ways to transform large organic compounds into fatty acids and ultimately CO 2 and CH 4 . While the central role of microbes in this process is well-known, geochemical rate models rarely integrate microbiological information. Herein, we expanded the geochemical rate model of Neumann et al., (2016, Biogeochemistry 127: 57–87) to incorporate a Bayesian probability analysis and applied the result to quantifying rates of CO 2 , CH 4 , and acetate production in closed-system incubations of peat collected from three habitats along a permafrost thaw gradient. The goals of this analysis were twofold. First, we integrated microbial community analyses with geochemical rate modeling by using microbial data to inform the best model choice among equally mathematically feasible model variants. Second, based on model results, we described changes in organic carbon transformation among habitats to understand the changing pathways of greenhouse gas production along the permafrost thaw gradient. We found that acetoclasty, hydrogenotrophy, CO 2 production, and homoacetogenesis were the important reactions in this system, with little evidence for anaerobic CH 4 oxidation. There was a distinct transition in the reactions across the thaw gradient. The collapsed palsa stage presents an initial disequilibrium where the abrupt (physically and temporally) change in elevation introduces freshly fixed carbon into anoxic conditions then fermentation products build up over time as the system transitions through the acid phase and electron acceptors are depleted. In the bog, fermentation slows, while ... Dataset palsa permafrost Frontiers: Figshare |
institution |
Open Polar |
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Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change greenhouse gas flux peatlands organic matter decomposition climate warming carbon cycling |
spellingShingle |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change greenhouse gas flux peatlands organic matter decomposition climate warming carbon cycling Rachel M. Wilson Rebecca B. Neumann Kelsey B. Crossen Nicole M. Raab Suzanne B. Hodgkins Scott R. Saleska Ben Bolduc Ben J. Woodcroft Gene W. Tyson Jeffrey P. Chanton Virginia I. Rich Table_2_Microbial Community Analyses Inform Geochemical Reaction Network Models for Predicting Pathways of Greenhouse Gas Production.XLSX |
topic_facet |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change greenhouse gas flux peatlands organic matter decomposition climate warming carbon cycling |
description |
The mechanisms, pathways, and rates of CO 2 and CH 4 production are central to understanding carbon cycling and greenhouse gas flux in wetlands. Thawing permafrost regions are of particular interest because they are disproportionally affected by climate warming and store large reservoirs of organic C that may be readily converted to CO 2 and CH 4 upon thaw. This conversion is accomplished by a community of microorganisms interacting in complex ways to transform large organic compounds into fatty acids and ultimately CO 2 and CH 4 . While the central role of microbes in this process is well-known, geochemical rate models rarely integrate microbiological information. Herein, we expanded the geochemical rate model of Neumann et al., (2016, Biogeochemistry 127: 57–87) to incorporate a Bayesian probability analysis and applied the result to quantifying rates of CO 2 , CH 4 , and acetate production in closed-system incubations of peat collected from three habitats along a permafrost thaw gradient. The goals of this analysis were twofold. First, we integrated microbial community analyses with geochemical rate modeling by using microbial data to inform the best model choice among equally mathematically feasible model variants. Second, based on model results, we described changes in organic carbon transformation among habitats to understand the changing pathways of greenhouse gas production along the permafrost thaw gradient. We found that acetoclasty, hydrogenotrophy, CO 2 production, and homoacetogenesis were the important reactions in this system, with little evidence for anaerobic CH 4 oxidation. There was a distinct transition in the reactions across the thaw gradient. The collapsed palsa stage presents an initial disequilibrium where the abrupt (physically and temporally) change in elevation introduces freshly fixed carbon into anoxic conditions then fermentation products build up over time as the system transitions through the acid phase and electron acceptors are depleted. In the bog, fermentation slows, while ... |
format |
Dataset |
author |
Rachel M. Wilson Rebecca B. Neumann Kelsey B. Crossen Nicole M. Raab Suzanne B. Hodgkins Scott R. Saleska Ben Bolduc Ben J. Woodcroft Gene W. Tyson Jeffrey P. Chanton Virginia I. Rich |
author_facet |
Rachel M. Wilson Rebecca B. Neumann Kelsey B. Crossen Nicole M. Raab Suzanne B. Hodgkins Scott R. Saleska Ben Bolduc Ben J. Woodcroft Gene W. Tyson Jeffrey P. Chanton Virginia I. Rich |
author_sort |
Rachel M. Wilson |
title |
Table_2_Microbial Community Analyses Inform Geochemical Reaction Network Models for Predicting Pathways of Greenhouse Gas Production.XLSX |
title_short |
Table_2_Microbial Community Analyses Inform Geochemical Reaction Network Models for Predicting Pathways of Greenhouse Gas Production.XLSX |
title_full |
Table_2_Microbial Community Analyses Inform Geochemical Reaction Network Models for Predicting Pathways of Greenhouse Gas Production.XLSX |
title_fullStr |
Table_2_Microbial Community Analyses Inform Geochemical Reaction Network Models for Predicting Pathways of Greenhouse Gas Production.XLSX |
title_full_unstemmed |
Table_2_Microbial Community Analyses Inform Geochemical Reaction Network Models for Predicting Pathways of Greenhouse Gas Production.XLSX |
title_sort |
table_2_microbial community analyses inform geochemical reaction network models for predicting pathways of greenhouse gas production.xlsx |
publishDate |
2019 |
url |
https://doi.org/10.3389/feart.2019.00059.s002 https://figshare.com/articles/Table_2_Microbial_Community_Analyses_Inform_Geochemical_Reaction_Network_Models_for_Predicting_Pathways_of_Greenhouse_Gas_Production_XLSX/7925186 |
genre |
palsa permafrost |
genre_facet |
palsa permafrost |
op_relation |
doi:10.3389/feart.2019.00059.s002 https://figshare.com/articles/Table_2_Microbial_Community_Analyses_Inform_Geochemical_Reaction_Network_Models_for_Predicting_Pathways_of_Greenhouse_Gas_Production_XLSX/7925186 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/feart.2019.00059.s002 |
_version_ |
1766162229177090048 |