Abstract
We investigated the aragonite saturation state (Ω arag ) during all four seasons in a coastal region of southern Korea that receives considerable freshwater input. The surface Ω 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 Ω 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 CO 2 .
| Original language | English |
|---|---|
| Pages (from-to) | 318-328 |
| Number of pages | 11 |
| Journal | Marine Pollution Bulletin |
| Volume | 129 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2018 Apr 1 |
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Keywords
- Aragonite saturation
- Busan coast
- Freshwater input
- Nakdong River
- Ocean acidification
ASJC Scopus subject areas
- Oceanography
- Aquatic Science
- Pollution
Cite this
Physical and biological control of aragonite saturation in the coastal waters of southern South Korea under the influence of freshwater. / Kim, Dongseon; Park, Geun Ha; Baek, Seung Ho; Choi, Yujeong; Kim, Tae-Wook.
In: Marine Pollution Bulletin, Vol. 129, No. 1, 01.04.2018, p. 318-328.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Physical and biological control of aragonite saturation in the coastal waters of southern South Korea under the influence of freshwater
AU - Kim, Dongseon
AU - Park, Geun Ha
AU - Baek, Seung Ho
AU - Choi, Yujeong
AU - Kim, Tae-Wook
PY - 2018/4/1
Y1 - 2018/4/1
N2 - We investigated the aragonite saturation state (Ω arag ) during all four seasons in a coastal region of southern Korea that receives considerable freshwater input. The surface Ω 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 Ω 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 CO 2 .
AB - We investigated the aragonite saturation state (Ω arag ) during all four seasons in a coastal region of southern Korea that receives considerable freshwater input. The surface Ω 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 Ω 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 CO 2 .
KW - Aragonite saturation
KW - Busan coast
KW - Freshwater input
KW - Nakdong River
KW - Ocean acidification
UR - http://www.scopus.com/inward/record.url?scp=85044116536&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85044116536&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2018.02.038
DO - 10.1016/j.marpolbul.2018.02.038
M3 - Article
C2 - 29680554
AN - SCOPUS:85044116536
VL - 129
SP - 318
EP - 328
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
SN - 0025-326X
IS - 1
ER -