skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thaw Transitions and Redox Conditions Drive Methane Oxidation in a Permafrost Peatland

Journal Article · · Journal of Geophysical Research. Biogeosciences
DOI:https://doi.org/10.1029/2019jg005526· OSTI ID:1802991
ORCiD logo [1]; ORCiD logo [2];  [3];  [4];  [5];  [4];  [6]; ORCiD logo [1]
  1. Univ. of New Hampshire, Durham, NH (United States); Univ. of New Hampshire, Durham, NH (United States). Inst. for the Study of Earth, Oceans, and Space
  2. Rochester Inst. of Technology, Rochester, NY (United States)
  3. Stanford Univ., CA (United States)
  4. Univ. of New Hampshire, Durham, NH (United States)
  5. Univ. of New Hampshire, Durham, NH (United States). Inst. for the Study of Earth, Oceans, and Space
  6. Umeå Univ. (Sweden). Climate Impacts Research Centre

Abstract Permafrost peatlands are a significant source of methane (CH 4 ) emissions to the atmosphere and could emit more CH 4 with continued permafrost thaw. Aerobic methane‐oxidizing bacteria may attenuate a substantial fraction of CH 4 emissions in thawing permafrost peatlands; however, the impact of permafrost thaw on CH 4 oxidation is uncertain. We measured potential CH 4 oxidation rates (hereafter, CH 4 oxidation) and their predictors using laboratory incubations and in situ porewater redox chemistry across a permafrost thaw gradient of eight thaw stages at Stordalen Mire, a permafrost peatland complex in northernmost Sweden. Methane oxidation rates increased across a gradient of permafrost thaw and differed in transitional thaw stages relative to end‐member stages. Oxidation was consistently higher in submerged fens than in bogs or palsas across a range of CH 4 concentrations. We also observed that CH 4 oxidation increased with decreasing in situ redox potential and was highest in sites with lower redox potential (Eh < 10 mV) and high water table. Our results suggest that redox potential can be used as an important predictor of CH 4 oxidation, especially in thawed permafrost peatlands. Our results also highlight the importance of considering transitional thaw stages when characterizing landscape‐scale CH 4 dynamics, because these transitional areas have different rates and controls of CH 4 oxidation relative to intact or completely thawed permafrost areas. As permafrost thaw increases the total area of semiwet and wet thaw stages in permafrost peatlands, CH 4 oxidation represents an important control on CH 4 emissions to the atmosphere.

Research Organization:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; National Science Foundation (NSF)
Grant/Contract Number:
SC0016440; DGE145027; EAR 1063037; DE‐SC0016440
OSTI ID:
1802991
Alternate ID(s):
OSTI ID: 1605456
Journal Information:
Journal of Geophysical Research. Biogeosciences, Vol. 125, Issue 3; ISSN 2169-8953
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

References (66)

Ecological controls on methane emissions from a Northern Peatland Complex in the zone of discontinuous permafrost, Manitoba, Canada journal December 1995
Improved quantification of microbial CH 4 oxidation efficiency in arctic wetland soils using carbon isotope fractionation journal January 2013
The influence of temperature and water table position on carbon dioxide and methane emissions from laboratory columns of peatland soils journal December 1993
CH4 production, oxidation and emission in a U.K. ombrotrophic peat bog: Influence of SO42− from acid rain journal July 1995
Dynamics of redox processes in a minerotrophic fen exposed to a water table manipulation journal November 2009
Methanotrophic symbionts provide carbon for photosynthesis in peat bogs journal August 2005
Metagenomic analysis of a permafrost microbial community reveals a rapid response to thaw journal November 2011
Regulation of methane production, oxidation, and emission by vascular plants and bryophytes in ponds of the northeast Siberian polygonal tundra journal December 2015
Methane fluxes and the functional groups of methanotrophs and methanogens in a young Arctic landscape on Disko Island, West Greenland journal August 2014
CH 4 oxidation by tundra wetlands as measured by a selective inhibitor technique journal November 1998
Circumpolar distribution and carbon storage of thermokarst landscapes journal October 2016
Effects of permafrost and hydrology on the composition and transport of dissolved organic carbon in a subarctic peatland complex: DOC IN A SUBARCTIC PEATLAND COMPLEX journal January 2012
Evidence for Anaerobic CH 4 Oxidation in Freshwater Peatlands journal December 2007
A new climate era in the sub-Arctic: Accelerating climate changes and multiple impacts: CHANGING CLIMATE IN THE SUB-ARCTIC journal July 2010
Major Biogeochemical Processes in Soils-A Microcosm Incubation from Reducing to Oxidizing Conditions journal January 2007
Effect of Carex rostrata on seasonal and interannual variability in peatland methane emissions: EFFECT OF C. ROSTRATA ON CH 4 EMISSIONS journal January 2014
Assessing effects of permafrost thaw on C fluxes based on multiyear modeling across a permafrost thaw gradient at Stordalen, Sweden journal January 2014
Summertime variation of methane oxidation in the rhizosphere of a Carex dominated freshwater marsh journal August 2004
Methane and carbon dioxide exchange potentials of peat soils in aerobic and anaerobic laboratory incubations journal August 1997
Oxidation of methane in peat: Kinetics of CH4 and O2 removal and the role of plant roots journal August 1997
Adding stable carbon isotopes improves model representation of the role of microbial communities in peatland methane cycling journal May 2017
Erratum: Effect of permafrost thaw on CO 2 and CH 4 exchange in a western Alaska peatland chronosequence (2013 Environ. Res. Lett. 9 085004) journal October 2014
Micro-aerobic bacterial methane oxidation in the chemocline and anoxic water column of deep south-Alpine Lake Lugano (Switzerland) journal January 2014
Changes in peat chemistry associated with permafrost thaw increase greenhouse gas production journal April 2014
Oxidation of methane in boreal forest soils: a comparison of seven measures journal January 1992
Isotopic insights into methane production, oxidation, and emissions in Arctic polygon tundra journal June 2016
Methane Oxidation and the Competition for Oxygen in the Rice Rhizosphere journal August 2001
Effect of temperature on methane dynamics and evaluation of methane oxidation kinetics in shallow Arctic Alaskan lakes journal August 2013
Plant-induced changes in the redox potentials of rice rhizospheres journal June 1992
Methanotrophy potential versus methane supply by pore water diffusion in peatlands journal January 2009
Genome-centric view of carbon processing in thawing permafrost journal July 2018
Methane Oxidation, Production, and Emission at Contrasting Sites in a Boreal Bog journal July 2000
Vegetation, climatic changes and net carbon sequestration in a North-Scandinavian subarctic mire over 30 years journal October 2005
Evaluation of methane oxidation in therhizosphere of a Carex dominated fen in northcentral Alberta, Canada journal January 2000
The role of Sphagnum mosses in the methane cycling of a boreal mire journal August 2010
Potential aerobic methane oxidation in a Sphagnum-dominated peatland—Controlling factors and relation to methane emission journal June 1995
Genomic Reconstruction of an Uncultured Hydrothermal Vent Gammaproteobacterial Methanotroph (Family Methylothermaceae) Indicates Multiple Adaptations to Oxygen Limitation journal December 2015
Environmental correlates of peatland carbon fluxes in a thawing landscape: do transitional thaw stages matter? journal January 2015
Plant functional group effects on peat carbon cycling in a boreal rich fen journal September 2019
Anaerobic oxidation of methane: an underappreciated aspect of methane cycling in peatland ecosystems? journal January 2011
Abundance, distribution and potential activity of methane oxidizing bacteria in permafrost soils from the Lena Delta, Siberia journal January 2007
Thawing sub-arctic permafrost: Effects on vegetation and methane emissions journal January 2004
Decadal vegetation changes in a northern peatland, greenhouse gas fluxes and net radiative forcing journal December 2006
Determining Subarctic Peatland Vegetation Using an Unmanned Aerial System (UAS) journal September 2018
Permafrost collapse is accelerating carbon release journal April 2019
Linking Soil O 2 , CO 2 , and CH 4 Concentrations in a Wetland Soil: Implications for CO 2 and CH 4 Fluxes journal April 2011
Electron accepting capacity of dissolved and particulate organic matter control CO2 and CH4 formation in peat soils journal January 2019
Methane production and oxidation potentials in relation to water table fluctuations in two boreal mires journal October 1999
Net carbon accumulation of a high-latitude permafrost palsa mire similar to permafrost-free peatlands: CARBON BALANCE OF A SUBARCTIC PEATLAND journal February 2012
Annual carbon gas budget for a subarctic peatland, Northern Sweden journal January 2010
Water table control of CH 4 emission enhancement by vascular plants in boreal peatlands journal October 1996
Boreal peatland C fluxes under varying permafrost regimes journal July 2002
Long‐Term Measurements of Methane Ebullition From Thaw Ponds journal July 2019
Methane oxidation associated with submerged brown mosses reduces methane emissions from Siberian polygonal tundra: Moss-associated methane oxidation journal March 2011
Methane dynamics regulated by microbial community response to permafrost thaw journal October 2014
Diversity and potential activity of methanotrophs in high methane-emitting permafrost thaw ponds journal November 2017
Post-thaw variability in litter decomposition best explained by microtopography at an ice-rich permafrost peatland journal January 2018
Methane emissions, groundwater levels and redox potentials of common wetland soils in a temperate-humid climate journal December 2000
In situ Methane Production from Acid Peat in Plant Communities with Different Moisture Regimes in a Subarctic Mire journal December 1984
Multiyear measurements of ebullitive methane flux from three subarctic lakes: METHANE EBULLITION FROM SUBARCTIC LAKES journal July 2013
Anaerobic oxidation of methane in tropical and boreal soils: Ecological significance in terrestrial methane cycling: ANAEROBIC OXIDATION OF METHANE IN SOILS journal June 2012
Sources of spatial variation in methane emission from mires in northern Sweden: A mechanistic approach in statistical modeling journal June 1997
Methanotrophy across a natural permafrost thaw environment journal June 2018
Redox dynamics in the active layer of an Arctic headwater catchment; examining the potential for transfer of dissolved methane from soils to stream water: Arctic Redox Dynamics and Soil Methane journal November 2016
Emissions from thaw ponds largely offset the carbon sink of northern permafrost wetlands journal June 2018
Radiocarbon evidence for the substrates supporting methane formation within northern Minnesota peatlands journal September 1995

Similar Records

Methanotrophy across a natural permafrost thaw environment
Journal Article · Thu Jun 28 00:00:00 EDT 2018 · The ISME Journal · OSTI ID:1802991

Controls on Soil Organic Matter Degradation and Subsequent Greenhouse Gas Emissions Across a Permafrost Thaw Gradient in Northern Sweden
Journal Article · Mon Sep 28 00:00:00 EDT 2020 · Frontiers in Earth Science · OSTI ID:1802991

Permafrost thaw driven changes in hydrology and vegetation cover increase trace gas emissions and climate forcing in Stordalen Mire from 1970 to 2014
Journal Article · Mon Dec 06 00:00:00 EST 2021 · Philosophical Transactions of the Royal Society. A, Mathematical, Physical and Engineering Sciences · OSTI ID:1802991