A scalable model for methane consumption in arctic mineral soils
Abstract Recent field studies have documented a surprisingly strong and consistent methane sink in arctic mineral soils, thought to be due to high‐affinity methanotrophy. However, the distinctive physiology of these methanotrophs is poorly represented in mechanistic methane models. We developed a ne...
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| Format: | Article |
| Language: | English |
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Wiley
2016-05-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2016GL069049 |
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| author | Youmi Oh Brandon Stackhouse Maggie C. Y. Lau Xiangtao Xu Anna T. Trugman Jonathan Moch Tullis C. Onstott Christian J. Jørgensen Ludovica D'Imperio Bo Elberling Craig A. Emmerton Vincent L. St. Louis David Medvigy |
| author_facet | Youmi Oh Brandon Stackhouse Maggie C. Y. Lau Xiangtao Xu Anna T. Trugman Jonathan Moch Tullis C. Onstott Christian J. Jørgensen Ludovica D'Imperio Bo Elberling Craig A. Emmerton Vincent L. St. Louis David Medvigy |
| author_sort | Youmi Oh |
| collection | DOAJ |
| description | Abstract Recent field studies have documented a surprisingly strong and consistent methane sink in arctic mineral soils, thought to be due to high‐affinity methanotrophy. However, the distinctive physiology of these methanotrophs is poorly represented in mechanistic methane models. We developed a new model, constrained by microcosm experiments, to simulate the activity of high‐affinity methanotrophs. The model was tested against soil core‐thawing experiments and field‐based measurements of methane fluxes and was compared to conventional mechanistic methane models. Our simulations show that high‐affinity methanotrophy can be an important component of the net methane flux from arctic mineral soils. Simulations without this process overestimate methane emissions. Furthermore, simulations of methane flux seasonality are improved by dynamic simulation of active microbial biomass. Because a large fraction of the Arctic is characterized by mineral soils, high‐affinity methanotrophy will likely have a strong effect on its net methane flux. |
| format | Article |
| id | doaj-art-9db54237f9cd43d28f929bea21b4eaed |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-9db54237f9cd43d28f929bea21b4eaed2025-08-20T03:10:24ZengWileyGeophysical Research Letters0094-82761944-80072016-05-0143105143515010.1002/2016GL069049A scalable model for methane consumption in arctic mineral soilsYoumi Oh0Brandon Stackhouse1Maggie C. Y. Lau2Xiangtao Xu3Anna T. Trugman4Jonathan Moch5Tullis C. Onstott6Christian J. Jørgensen7Ludovica D'Imperio8Bo Elberling9Craig A. Emmerton10Vincent L. St. Louis11David Medvigy12Program in Atmospheric and Oceanic Sciences Princeton University Princeton New Jersey USADepartment of Geosciences Princeton University Princeton New Jersey USADepartment of Geosciences Princeton University Princeton New Jersey USADepartment of Geosciences Princeton University Princeton New Jersey USAProgram in Atmospheric and Oceanic Sciences Princeton University Princeton New Jersey USADepartment of Geosciences Princeton University Princeton New Jersey USADepartment of Geosciences Princeton University Princeton New Jersey USACenter for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management University of Copenhagen Copenhagen DenmarkCenter for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management University of Copenhagen Copenhagen DenmarkCenter for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management University of Copenhagen Copenhagen DenmarkDepartment of Biological Sciences University of Alberta Edmonton Alberta CanadaDepartment of Biological Sciences University of Alberta Edmonton Alberta CanadaProgram in Atmospheric and Oceanic Sciences Princeton University Princeton New Jersey USAAbstract Recent field studies have documented a surprisingly strong and consistent methane sink in arctic mineral soils, thought to be due to high‐affinity methanotrophy. However, the distinctive physiology of these methanotrophs is poorly represented in mechanistic methane models. We developed a new model, constrained by microcosm experiments, to simulate the activity of high‐affinity methanotrophs. The model was tested against soil core‐thawing experiments and field‐based measurements of methane fluxes and was compared to conventional mechanistic methane models. Our simulations show that high‐affinity methanotrophy can be an important component of the net methane flux from arctic mineral soils. Simulations without this process overestimate methane emissions. Furthermore, simulations of methane flux seasonality are improved by dynamic simulation of active microbial biomass. Because a large fraction of the Arctic is characterized by mineral soils, high‐affinity methanotrophy will likely have a strong effect on its net methane flux.https://doi.org/10.1002/2016GL069049methane modelsarcticterrestrial methane sinkhigh‐affinity methanotrophymicrobial biomass changesmineral cryosols |
| spellingShingle | Youmi Oh Brandon Stackhouse Maggie C. Y. Lau Xiangtao Xu Anna T. Trugman Jonathan Moch Tullis C. Onstott Christian J. Jørgensen Ludovica D'Imperio Bo Elberling Craig A. Emmerton Vincent L. St. Louis David Medvigy A scalable model for methane consumption in arctic mineral soils Geophysical Research Letters methane models arctic terrestrial methane sink high‐affinity methanotrophy microbial biomass changes mineral cryosols |
| title | A scalable model for methane consumption in arctic mineral soils |
| title_full | A scalable model for methane consumption in arctic mineral soils |
| title_fullStr | A scalable model for methane consumption in arctic mineral soils |
| title_full_unstemmed | A scalable model for methane consumption in arctic mineral soils |
| title_short | A scalable model for methane consumption in arctic mineral soils |
| title_sort | scalable model for methane consumption in arctic mineral soils |
| topic | methane models arctic terrestrial methane sink high‐affinity methanotrophy microbial biomass changes mineral cryosols |
| url | https://doi.org/10.1002/2016GL069049 |
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