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논문 기본 정보

자료유형
학술저널
저자정보
Kim, Ju-Hyoung (Faculty of Marine Applied Biosciences, Kunsan National University) Kang, Eun Ju (Department of Oceanography, College of Natural Sciences Chonnam National University) Kim, Keunyong (Department of Oceanography, College of Natural Sciences Chonnam National University) Jeong, Hae Jin (School of Earth and Environmental Sciences, College of Natural Sciences, Seoul National University) Lee, Kitack (School of Environmental Science and Engineering, Pohang University of Science and Technology) Edwards, Matthew S. (Department of Biology, San Diego State University) Park, Myung Gil (Department of Oceanography, College of Natural Sciences Chonnam National University) Lee, Byeong-Gweon (Department of Oceanography, College of Natural Sciences Chonnam National University) Kim, Kwang Young (Department of Oceanography, College of Natural Sciences Chonnam National University)
저널정보
한국조류학회(藻類) Algae Algae 제30권 제2호
발행연도
2015.1
수록면
121 - 137 (17page)

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초록· 키워드

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Studies on carbon flux in the oceans have been highlighted in recent years due to increasing awareness about climate change, but the coastal ecosystem remains one of the unexplored fields in this regard. In this study, the dynamics of carbon flux in a vegetative coastal ecosystem were examined by an evaluation of net and gross ecosystem production (NEP and GEP) and $CO_2$ exchange rates (net ecosystem exchange, NEE). To estimate NEP and GEP, community production and respiration were measured along different habitat types (eelgrass and macroalgal beds, shallow and deep sedimentary, and deep rocky shore) at Gwangyang Bay, Korea from 20 June to 20 July 2007. Vegetative areas showed significantly higher ecosystem production than the other habitat types. Specifically, eelgrass beds had the highest daily GEP ($6.97{\pm}0.02g\;C\;m^{-2}\;d^{-1}$), with a large amount of biomass and high productivity of eelgrass, whereas the outer macroalgal vegetation had the lowest GEP ($0.97{\pm}0.04g\;C\;m^{-2}\;d^{-1}$). In addition, macroalgal vegetation showed the highest daily NEP ($3.31{\pm}0.45g\;C\;m^{-2}\;d^{-1}$) due to its highest P : R ratio (2.33). Furthermore, the eelgrass beds acted as a $CO_2$ sink through the air-seawater interface according to NEE data, with a carbon sink rate of $0.63mg\;C\;m^{-2}\;d^{-1}$. Overall, ecosystem production was found to be extremely high in the vegetated systems (eelgrass and macroalgal beds), which occupy a relatively small area compared to the unvegetated systems according to our conceptual diagram of a carbon-flux box model. These results indicate that the vegetative ecosystems showed significantly high capturing efficiency of inorganic carbon through coastal primary production.

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