Physical and biological control of aragonite saturation in the coastal waters of southern South Korea under the influence of freshwater
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Title
- Physical and biological control of aragonite saturation in the coastal waters of southern South Korea under the influence of freshwater
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Author(s)
- Kim, Dongseon; Park, Geun-Ha; Baek, Seung Ho; Choi, Yujeong; Kim, Tae-Wook
- KIOST Author(s)
- Kim, Dong Seon(김동선); Park, Geun-Ha(박근하); Baek, Seung Ho(백승호)
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Alternative Author(s)
- 김동선; 박근하; 백승호; 최유정
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Publication Year
- 2018-04
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Abstract
- We investigated the aragonite saturation state (Omega(arag)) during all four seasons in a coastal region of southern Korea that receives considerable freshwater input. The surface Omega(arag) values were higher during productive seasons with enhanced freshwater influences, likely due to an increased net removal of dissolved inorganic carbon (DIC) from the water column (i.e., biological control). In addition, during the productive seasons, enhancement of Omega(arag) was observed with decreasing salinity within a linear mixing zone present between river influenced surface and saltier bottom waters. DIC appeared to be effectively sequestered from the warmer, less salty surface water by downward flux of organic matter, but not significantly affected by the relatively DIC-rich, cooler and saltier bottom waters under strong stratification conditions during these seasons (i.e., physical control). Low phytoplankton productivity and seasonal breakdown of the stratification caused reduced saturation in other seasons and made the study area a weak sink for atmospheric CO2.
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ISSN
- 0025-326X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/987
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DOI
- 10.1016/j.marpolbul.2018.02.038
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Bibliographic Citation
- MARINE POLLUTION BULLETIN, v.129, no.1, pp.318 - 328, 2018
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Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
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Subject
- OCEAN ACIDIFICATION; CARBONATE SATURATION; SEAWATER; IMPACT; BAY; CO2; DISSOCIATION; ALKALINITY; CONSTANTS; DYNAMICS
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Keywords
- Ocean acidification; Aragonite saturation; Freshwater input; Susan coast; Nakdong River
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Type
- Article
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Language
- English
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Document Type
- Article
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