Temporal, Spatial, and Temperature Controls on Organic Carbon Mineralization and Methanogenesis in Arctic High-Centered Polygon Soils
Warming temperatures in continuous permafrost zones of the Arctic will alter both hydrological and geochemical soil conditions, which are strongly linked with heterotrophic microbial carbon (C) cycling. Heterogeneous permafrost landscapes are often dominated by polygonal features formed by expanding...
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ftpubmed:oai:pubmedcentral.nih.gov:7829362 2023-05-15T14:56:44+02:00 Temporal, Spatial, and Temperature Controls on Organic Carbon Mineralization and Methanogenesis in Arctic High-Centered Polygon Soils Roy Chowdhury, Taniya Berns, Erin C. Moon, Ji-Won Gu, Baohua Liang, Liyuan Wullschleger, Stan D. Graham, David E. 2021-01-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7829362/ http://www.ncbi.nlm.nih.gov/pubmed/33505383 https://doi.org/10.3389/fmicb.2020.616518 en eng Frontiers Media S.A. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7829362/ http://www.ncbi.nlm.nih.gov/pubmed/33505383 http://dx.doi.org/10.3389/fmicb.2020.616518 Copyright © 2021 Roy Chowdhury, Berns, Moon, Gu, Liang, Wullschleger and Graham. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. CC-BY Front Microbiol Microbiology Text 2021 ftpubmed https://doi.org/10.3389/fmicb.2020.616518 2021-01-31T01:50:21Z Warming temperatures in continuous permafrost zones of the Arctic will alter both hydrological and geochemical soil conditions, which are strongly linked with heterotrophic microbial carbon (C) cycling. Heterogeneous permafrost landscapes are often dominated by polygonal features formed by expanding ice wedges: water accumulates in low centered polygons (LCPs), and water drains outward to surrounding troughs in high centered polygons (HCPs). These geospatial differences in hydrology cause gradients in biogeochemistry, soil C storage potential, and thermal properties. Presently, data quantifying carbon dioxide (CO(2)) and methane (CH(4)) release from HCP soils are needed to support modeling and evaluation of warming-induced CO(2) and CH(4) fluxes from tundra soils. This study quantifies the distribution of microbial CO(2) and CH(4) release in HCPs over a range of temperatures and draws comparisons to previous LCP studies. Arctic tundra soils were initially characterized for geochemical and hydraulic properties. Laboratory incubations at −2, +4, and +8°C were used to quantify temporal trends in CO(2) and CH(4) production from homogenized active layer organic and mineral soils in HCP centers and troughs, and methanogen abundance was estimated from mcrA gene measurements. Results showed that soil water availability, organic C, and redox conditions influence temporal dynamics and magnitude of gas production from HCP active layer soils during warming. At early incubation times (2–9 days), higher CO(2) emissions were observed from HCP trough soils than from HCP center soils, but increased CO(2) production occurred in center soils at later times (>20 days). HCP center soils did not support methanogenesis, but CH(4)-producing trough soils did indicate methanogen presence. Consistent with previous LCP studies, HCP organic soils showed increased CO(2) and CH(4) production with elevated water content, but HCP trough mineral soils produced more CH(4) than LCP mineral soils. HCP mineral soils also released substantial ... Text Arctic Ice permafrost Tundra wedge* PubMed Central (PMC) Arctic Frontiers in Microbiology 11 |
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English |
topic |
Microbiology |
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Microbiology Roy Chowdhury, Taniya Berns, Erin C. Moon, Ji-Won Gu, Baohua Liang, Liyuan Wullschleger, Stan D. Graham, David E. Temporal, Spatial, and Temperature Controls on Organic Carbon Mineralization and Methanogenesis in Arctic High-Centered Polygon Soils |
topic_facet |
Microbiology |
description |
Warming temperatures in continuous permafrost zones of the Arctic will alter both hydrological and geochemical soil conditions, which are strongly linked with heterotrophic microbial carbon (C) cycling. Heterogeneous permafrost landscapes are often dominated by polygonal features formed by expanding ice wedges: water accumulates in low centered polygons (LCPs), and water drains outward to surrounding troughs in high centered polygons (HCPs). These geospatial differences in hydrology cause gradients in biogeochemistry, soil C storage potential, and thermal properties. Presently, data quantifying carbon dioxide (CO(2)) and methane (CH(4)) release from HCP soils are needed to support modeling and evaluation of warming-induced CO(2) and CH(4) fluxes from tundra soils. This study quantifies the distribution of microbial CO(2) and CH(4) release in HCPs over a range of temperatures and draws comparisons to previous LCP studies. Arctic tundra soils were initially characterized for geochemical and hydraulic properties. Laboratory incubations at −2, +4, and +8°C were used to quantify temporal trends in CO(2) and CH(4) production from homogenized active layer organic and mineral soils in HCP centers and troughs, and methanogen abundance was estimated from mcrA gene measurements. Results showed that soil water availability, organic C, and redox conditions influence temporal dynamics and magnitude of gas production from HCP active layer soils during warming. At early incubation times (2–9 days), higher CO(2) emissions were observed from HCP trough soils than from HCP center soils, but increased CO(2) production occurred in center soils at later times (>20 days). HCP center soils did not support methanogenesis, but CH(4)-producing trough soils did indicate methanogen presence. Consistent with previous LCP studies, HCP organic soils showed increased CO(2) and CH(4) production with elevated water content, but HCP trough mineral soils produced more CH(4) than LCP mineral soils. HCP mineral soils also released substantial ... |
format |
Text |
author |
Roy Chowdhury, Taniya Berns, Erin C. Moon, Ji-Won Gu, Baohua Liang, Liyuan Wullschleger, Stan D. Graham, David E. |
author_facet |
Roy Chowdhury, Taniya Berns, Erin C. Moon, Ji-Won Gu, Baohua Liang, Liyuan Wullschleger, Stan D. Graham, David E. |
author_sort |
Roy Chowdhury, Taniya |
title |
Temporal, Spatial, and Temperature Controls on Organic Carbon Mineralization and Methanogenesis in Arctic High-Centered Polygon Soils |
title_short |
Temporal, Spatial, and Temperature Controls on Organic Carbon Mineralization and Methanogenesis in Arctic High-Centered Polygon Soils |
title_full |
Temporal, Spatial, and Temperature Controls on Organic Carbon Mineralization and Methanogenesis in Arctic High-Centered Polygon Soils |
title_fullStr |
Temporal, Spatial, and Temperature Controls on Organic Carbon Mineralization and Methanogenesis in Arctic High-Centered Polygon Soils |
title_full_unstemmed |
Temporal, Spatial, and Temperature Controls on Organic Carbon Mineralization and Methanogenesis in Arctic High-Centered Polygon Soils |
title_sort |
temporal, spatial, and temperature controls on organic carbon mineralization and methanogenesis in arctic high-centered polygon soils |
publisher |
Frontiers Media S.A. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7829362/ http://www.ncbi.nlm.nih.gov/pubmed/33505383 https://doi.org/10.3389/fmicb.2020.616518 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost Tundra wedge* |
genre_facet |
Arctic Ice permafrost Tundra wedge* |
op_source |
Front Microbiol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7829362/ http://www.ncbi.nlm.nih.gov/pubmed/33505383 http://dx.doi.org/10.3389/fmicb.2020.616518 |
op_rights |
Copyright © 2021 Roy Chowdhury, Berns, Moon, Gu, Liang, Wullschleger and Graham. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2020.616518 |
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Frontiers in Microbiology |
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11 |
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1766328806191136768 |