Spatial and temporal variations in nutrient and chlorophyll-a concentrations in the northern East China Sea surrounding Cheju Island

Kim, Dong-Seon; Choi, Sang Hwa; Kim, Kyung Hee; Shim, Jae-Seol; Yoo, Sinjae; Kim, Chul Ho

doi:10.1016/j.csr.2009.03.012

Cited by 44 publications

(40 citation statements)

References 25 publications

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“…5a and b) to give a transsectional view of the distinctive CCC. At transect PN, the CCC featured low temperature (12.1-16.5 • C) and low salinity (31.4-32.9), and occupied the inner shelf with a water depth mostly shallower than 50 m. Seaward from the CCC, both temperature and salinity increased gradually and were vertically well mixed as reported previously (Hama et al, 1997;Kim et al, 2009).…”

Section: Hydrographysupporting

confidence: 54%

Inter-shelf nutrient transport from the East China Sea as a major nutrient source supporting winter primary production on the northeast South China Sea shelf

et al. 2013

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Abstract. The East China Sea (ECS) and the South China Sea (SCS) are two major marginal seas of the North Pacific with distinct seasonal variations of primary productivity. Based upon field observations covering both the ECS and the northern SCS (NSCS) during December 2008-January 2009, we examined southward long-range transport of nutrients from the ECS to the northeastern SCS (NESCS) carried by the China Coastal Current (CCC) driven by the prevailing northeast monsoon in wintertime. These escaped nutrients from the ECS shelf, where primary production (PP) was limited in winter, might however refuel the PP on the NESCS shelf at lower latitude, where the water temperature remained favorable, but river-sourced nutrients were limited. By combining the field observation of nitrate+nitrite (NO 3 +NO 2 , DIN) with our best estimate of volume transport of the CCC, we derived a first-order estimate for DIN flux of 1430 ± 1024 mol s −1 . Under the assumption that DIN was the limiting nutrient, such southward DIN transport would have stimulated 8.84 ± 6.33 × 10 11 gC of new production (NP), accounting for 33-74 % of the NP or 14-22 % of PP in winter on the NESCS shelf shallower than 100 m.

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Section: Hydrographysupporting

confidence: 54%

Inter-shelf nutrient transport from the East China Sea as a major nutrient source supporting winter primary production on the northeast South China Sea shelf

et al. 2013

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“…Therefore, it is possible that the temporary decrease in silicate concentration between the periods of mixing and stratification in the western KTS is the key factor that triggers the succession from diatoms to flagellates. This finding may be of particular interest since the Three Gorge Dam may result in a severe reduction in the concentration of silicate in the CDW (Gong et al 2006;Kim et al 2009), which could affect the phytoplankton biomass and assemblages in the study area. Figure 9 illustrates the succession of phytoplankton species that dominated over 10% of the total number of diatoms and dinoflagellates on any occasion in the upper layer of the water column during the survey periods.…”

Section: Resultsmentioning

confidence: 99%

Nutrient distribution and effects on phytoplankton assemblages in the western Korea/Tsushima Strait

Jang

Shin

Baek

et al. 2013

New Zealand Journal of Marine and Freshwater Research

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In this study, we investigated the relationship between seasonal/annual variation in water masses and nutrients, and the effects of nutrients on phytoplankton assemblages in the western Korea/ Tsushima Strait. We collected water samples at least once per month from March 2006 to January 2008. There was seasonal variation in nutrient concentrations, with higher values in winter than in summer, and there was annual variation in chlorophyll-a concentration and phytoplankton abundance during spring, with values being approximately three and 10 times higher, respectively, in 2007 than in 2006. Phytoplankton abundance was also approximately four times higher in 2007 than in 2006 during the stratification periods. Our findings suggest that when the supply of nutrients to the upper layer is increased as a result of the Tsushima Warm Water Current and the effect of typhoons, they regulate the abundance and composition of phytoplankton assemblages in the Korea/Tsushima Strait, inducing a succession from flagellates to diatoms.

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“…Additionally, primary productivity has been found to modulate the deposition of atmospheric PCBs in marine environments driven by biological pump (Dachs et al, 2002;Galbán-Malagón et al, 2012). Hence, high low-chlorinated PCBs (mono-to tetra-PCBs) corresponding to high primary productivity (Kim et al, 2009) in this region indicated that most of these sedimentary PCBs could be attributed to atmospheric transportation from North China.…”

Section: Spatial Distribution Of Pcbs and Tocmentioning

confidence: 99%

Use of lipid biomarkers for identification of regional sources and dechlorination characteristics of polychlorinated biphenyls in the East China Sea

Fan

Lan

et al. 2014

Science of The Total Environment

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Spatial and temporal variations in nutrient and chlorophyll-a concentrations in the northern East China Sea surrounding Cheju Island

Cited by 44 publications

References 25 publications

Inter-shelf nutrient transport from the East China Sea as a major nutrient source supporting winter primary production on the northeast South China Sea shelf

Inter-shelf nutrient transport from the East China Sea as a major nutrient source supporting winter primary production on the northeast South China Sea shelf

Nutrient distribution and effects on phytoplankton assemblages in the western Korea/Tsushima Strait

Use of lipid biomarkers for identification of regional sources and dechlorination characteristics of polychlorinated biphenyls in the East China Sea

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