Soil incubations reproduce field methane dynamics in a subarctic wetland

Verfasser / Beitragende:
[Suzanne Hodgkins, Jeffrey Chanton, Lauren Langford, Carmody McCalley, Scott Saleska, Virginia Rich, Patrick Crill, William Cooper]
Ort, Verlag, Jahr:
2015
Enthalten in:
Biogeochemistry, 126/1-2(2015-11-01), 241-249
Format:
Artikel (online)
ID: 605517401
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024 7 0 |a 10.1007/s10533-015-0142-z  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10533-015-0142-z 
245 0 0 |a Soil incubations reproduce field methane dynamics in a subarctic wetland  |h [Elektronische Daten]  |c [Suzanne Hodgkins, Jeffrey Chanton, Lauren Langford, Carmody McCalley, Scott Saleska, Virginia Rich, Patrick Crill, William Cooper] 
520 3 |a A major challenge in peatland carbon cycle modeling is the estimation of subsurface methane (CH4) and carbon dioxide (CO2) production and consumption rates and pathways. The most common methods for modeling these processes are soil incubations and stable isotope modeling, both of which may involve departures from field conditions. To explore the impacts of these departures, we measured CH4/CO2 concentration ratios and 13C fractionation factors (αC, indicating CH4 production pathways) in field pore water from a thawing subarctic peatland, and compared these values to those observed in incubations of corresponding peat samples. Incubation CH4/CO2 production ratios were significantly and positively correlated with observed field CH4/CO2 concentration ratios, though observed field ratios were ~20% of those in incubations due to CH4's lower solubility in pore water. After correcting the field ratios for CH4 loss with an isotope mass balance model, the incubation CH4/CO2 ratios and αC were both significantly positively correlated with field ratios and αC (respectively), both with slopes indistinguishable from 1. Although CH4/CO2 ratios and αC were slightly higher in the incubations, these shifts were consistent along the thaw progression, indicating that ex situ incubations can replicate trends in in situ CH4 production. 
540 |a Springer International Publishing Switzerland, 2015 
690 7 |a Peatlands  |2 nationallicence 
690 7 |a Methane  |2 nationallicence 
690 7 |a Geochemistry  |2 nationallicence 
690 7 |a Soil incubations  |2 nationallicence 
690 7 |a Stable isotopes  |2 nationallicence 
700 1 |a Hodgkins  |D Suzanne  |u Department of Earth, Ocean, and Atmospheric Science, Florida State University, 32306, Tallahassee, FL, USA  |4 aut 
700 1 |a Chanton  |D Jeffrey  |u Department of Earth, Ocean, and Atmospheric Science, Florida State University, 32306, Tallahassee, FL, USA  |4 aut 
700 1 |a Langford  |D Lauren  |u Department of Earth, Ocean, and Atmospheric Science, Florida State University, 32306, Tallahassee, FL, USA  |4 aut 
700 1 |a McCalley  |D Carmody  |u Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, 14623, Rochester, NY, USA  |4 aut 
700 1 |a Saleska  |D Scott  |u Department of Ecology and Evolutionary Biology, University of Arizona, 85716, Tucson, AZ, USA  |4 aut 
700 1 |a Rich  |D Virginia  |u Department of Soil, Water and Environmental Science, University of Arizona, 85716, Tucson, AZ, USA  |4 aut 
700 1 |a Crill  |D Patrick  |u Department of Geological Sciences, Stockholm University, 10691, Stockholm, Sweden  |4 aut 
700 1 |a Cooper  |D William  |u Department of Chemistry and Biochemistry, Florida State University, 32306, Tallahassee, FL, USA  |4 aut 
773 0 |t Biogeochemistry  |d Springer International Publishing  |g 126/1-2(2015-11-01), 241-249  |x 0168-2563  |q 126:1-2<241  |1 2015  |2 126  |o 10533 
856 4 0 |u https://doi.org/10.1007/s10533-015-0142-z  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a brief-communication  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10533-015-0142-z  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Hodgkins  |D Suzanne  |u Department of Earth, Ocean, and Atmospheric Science, Florida State University, 32306, Tallahassee, FL, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Chanton  |D Jeffrey  |u Department of Earth, Ocean, and Atmospheric Science, Florida State University, 32306, Tallahassee, FL, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Langford  |D Lauren  |u Department of Earth, Ocean, and Atmospheric Science, Florida State University, 32306, Tallahassee, FL, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a McCalley  |D Carmody  |u Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, 14623, Rochester, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Saleska  |D Scott  |u Department of Ecology and Evolutionary Biology, University of Arizona, 85716, Tucson, AZ, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Rich  |D Virginia  |u Department of Soil, Water and Environmental Science, University of Arizona, 85716, Tucson, AZ, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Crill  |D Patrick  |u Department of Geological Sciences, Stockholm University, 10691, Stockholm, Sweden  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Cooper  |D William  |u Department of Chemistry and Biochemistry, Florida State University, 32306, Tallahassee, FL, USA  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Biogeochemistry  |d Springer International Publishing  |g 126/1-2(2015-11-01), 241-249  |x 0168-2563  |q 126:1-2<241  |1 2015  |2 126  |o 10533