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Simultaneous measurements of dissolved CH4 and H2 in wetland soils.
Environ Monit Assess 2018; 190(3):176EM

Abstract

Biogeochemical processes in wetland soils are complex and are driven by a microbiological community that competes for resources and affects the soil chemistry. Depending on the availability of various electron acceptors, the high carbon input to wetland soils can make them important sources of methane production and emissions. There are two significant pathways for methanogenesis: acetoclastic and hydrogenotrophic methanogenesis. The hydrogenotrophic pathway is dependent on the availability of dissolved hydrogen gas (H2), and there is significant competition for available H2. This study presents simultaneous measurements of dissolved methane and H2 over a 2-year period at three tidal marshes in the New Jersey Meadowlands. Methane reservoirs show a significant correlation with dissolved organic carbon, temperature, and methane emissions, whereas the H2 concentrations measured with dialysis samplers do not show significant relationships with these field variables. Data presented in this study show that increased dissolved H2 reservoirs in wetland soils correlate with decreased methane reservoirs, which is consistent with studies that have shown that elevated levels of H2 inhibit methane production by inhibiting propionate fermentation, resulting in less acetate production and hence decreasing the contribution of acetoclastic methanogenesis to the overall production of methane.

Authors+Show Affiliations

Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, USA.Department of Biological Sciences, Rutgers University, Newark, NJ, USA.School of Civil and Environmental Engineering, Cornell University, Ithaca, NY, USA.Department of Biological Sciences, Rutgers University, Newark, NJ, USA.Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, USA. jaffe@princeton.edu.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29484491

Citation

Pal, David S., et al. "Simultaneous Measurements of Dissolved CH4 and H2 in Wetland Soils." Environmental Monitoring and Assessment, vol. 190, no. 3, 2018, p. 176.
Pal DS, Tripathee R, Reid MC, et al. Simultaneous measurements of dissolved CH4 and H2 in wetland soils. Environ Monit Assess. 2018;190(3):176.
Pal, D. S., Tripathee, R., Reid, M. C., Schäfer, K. V. R., & Jaffé, P. R. (2018). Simultaneous measurements of dissolved CH4 and H2 in wetland soils. Environmental Monitoring and Assessment, 190(3), p. 176. doi:10.1007/s10661-018-6552-3.
Pal DS, et al. Simultaneous Measurements of Dissolved CH4 and H2 in Wetland Soils. Environ Monit Assess. 2018 Feb 26;190(3):176. PubMed PMID: 29484491.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Simultaneous measurements of dissolved CH4 and H2 in wetland soils. AU - Pal,David S, AU - Tripathee,Rajan, AU - Reid,Matthew C, AU - Schäfer,Karina V R, AU - Jaffé,Peter R, Y1 - 2018/02/26/ PY - 2017/11/12/received PY - 2018/02/12/accepted PY - 2018/2/28/entrez PY - 2018/2/28/pubmed PY - 2018/6/1/medline KW - Hydrogen KW - Methane KW - Sediments KW - Wetlands SP - 176 EP - 176 JF - Environmental monitoring and assessment JO - Environ Monit Assess VL - 190 IS - 3 N2 - Biogeochemical processes in wetland soils are complex and are driven by a microbiological community that competes for resources and affects the soil chemistry. Depending on the availability of various electron acceptors, the high carbon input to wetland soils can make them important sources of methane production and emissions. There are two significant pathways for methanogenesis: acetoclastic and hydrogenotrophic methanogenesis. The hydrogenotrophic pathway is dependent on the availability of dissolved hydrogen gas (H2), and there is significant competition for available H2. This study presents simultaneous measurements of dissolved methane and H2 over a 2-year period at three tidal marshes in the New Jersey Meadowlands. Methane reservoirs show a significant correlation with dissolved organic carbon, temperature, and methane emissions, whereas the H2 concentrations measured with dialysis samplers do not show significant relationships with these field variables. Data presented in this study show that increased dissolved H2 reservoirs in wetland soils correlate with decreased methane reservoirs, which is consistent with studies that have shown that elevated levels of H2 inhibit methane production by inhibiting propionate fermentation, resulting in less acetate production and hence decreasing the contribution of acetoclastic methanogenesis to the overall production of methane. SN - 1573-2959 UR - https://www.unboundmedicine.com/medline/citation/29484491/Simultaneous_measurements_of_dissolved_CH4_and_H2_in_wetland_soils_ L2 - https://doi.org/10.1007/s10661-018-6552-3 DB - PRIME DP - Unbound Medicine ER -