Assessment of CH4 oxidation in tidal flat sediments
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 강정원 | - |
dc.contributor.author | 현상민 | - |
dc.date.accessioned | 2020-07-15T09:54:12Z | - |
dc.date.available | 2020-07-15T09:54:12Z | - |
dc.date.created | 2020-02-11 | - |
dc.date.issued | 2018-11-03 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/22909 | - |
dc.description.abstract | In tidal flats that lack plants, methane (CH4) fluxes are both positive (gas emission) and negative (gas “sinking”) in nature. The levels of methanotroph populations significantly affect the extent of CH4 sinking. The chamber was deployed over decapods (mud shrimp, Laomedia astacina and crab, Macrophthalmus japonicus) burrows for ~ 2 h, and the CH4 and CO2 concentrations were continuously monitored using a closed, diffuse CH4/CO2 flux meter. We found that Laomedia astacina burrow (which is relatively long) site afforded higher-level CH4 production, likely due to diffusive emission of CH4 in deep-layer sediments. In addition, the large methanotrophic bacteria population found in the burrow wall sediments has CH4 oxidation (consumption) potential. Especially, nitrite-driven anaerobic oxidation of methane (AOM) may occur within burrows. The proposed CH4-oxidation process was supported by the decrease in the δ13C of headspace CO2 during the chamber experiment. over decapods (mud shrimp, Laomedia astacina and crab, Macrophthalmus japonicus) burrows for ~ 2 h, and the CH4 and CO2 concentrations were continuously monitored using a closed, diffuse CH4/CO2 flux meter. We found that Laomedia astacina burrow (which is relatively long) site afforded higher-level CH4 production, likely due to diffusive emission of CH4 in deep-layer sediments. In addition, the large methanotrophic bacteria population found in the burrow wall sediments has CH4 oxidation (consumption) potential. Especially, nitrite-driven anaerobic oxidation of methane (AOM) may occur within burrows. The proposed CH4-oxidation process was supported by the decrease in the δ13C of headspace CO2 during the chamber experiment. | - |
dc.description.uri | 2 | - |
dc.language | English | - |
dc.publisher | 한국환경과학회 | - |
dc.relation.isPartOf | 2018 한국환경과학회 정기학술대회 | - |
dc.title | Assessment of CH4 oxidation in tidal flat sediments | - |
dc.type | Conference | - |
dc.citation.conferencePlace | KO | - |
dc.citation.endPage | 2 | - |
dc.citation.startPage | 1 | - |
dc.citation.title | 2018 한국환경과학회 정기학술대회 | - |
dc.contributor.alternativeName | 강정원 | - |
dc.contributor.alternativeName | 현상민 | - |
dc.identifier.bibliographicCitation | 2018 한국환경과학회 정기학술대회, pp.1 - 2 | - |
dc.description.journalClass | 2 | - |