Insights into macroinvertebrate burrowing activity and methane flux in tidal flats
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Title
- Insights into macroinvertebrate burrowing activity and methane flux in tidal flats
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Author(s)
- 강정원; 구본주; 정갑식; 우한준; 서재환; 서현석; 김민섭; 권개경
- KIOST Author(s)
- Kang, Jeong Won(강정원); Koo, Bon Joo(구본주); Woo, Han Jun(우한준); Seo, Jae Hwan(서재환); Kwon, Kae Kyoung(권개경)
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Alternative Author(s)
- 강정원; 구본주; 정갑식; 우한준; 서재환; 서현석; 권개경
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Publication Year
- 2018-05-15
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Abstract
- The CH4 flux was examined preliminarily in tidal flats using a circular closed-chamber method to understand the effects of macroinvertebrate burrowing activity. 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. It founds 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 proposed CH4-oxidation process (i.e., reverse methanogenesis) was supported by the decrease in the δ13C of headspace CO2 during the chamber experiment. Therefore, macroinvertebrate burrows appear to be an important ecosystem environment for controlling atmospheric CH4 over tidal flats. Macrophthalmus japonicus) burrows for ~ 2 h, and the CH4 and CO2 concentrations were continuously monitored using a closed, diffuse CH4/CO2 flux meter. It founds 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 proposed CH4-oxidation process (i.e., reverse methanogenesis) was supported by the decrease in the δ13C of headspace CO2 during the chamber experiment. Therefore, macroinvertebrate burrows appear to be an important ecosystem environment for controlling atmospheric CH4 over tidal flats.
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/23365
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Bibliographic Citation
- ICS 2018, pp.14, 2018
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Publisher
- KIOST,
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Type
- Conference
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Language
- English
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