Distributions, stoichiometric patterns and cross-shelf exports of dissolved organic matter in the East China Sea

Hung, Jia‐Jang; Chen, C.-H.; Gong, Gwo‐Ching; Sheu, David D.; Shiah, Fuh‐Kwo

doi:10.1016/s0967-0645(03)00014-6

Cited by 109 publications

(77 citation statements)

References 48 publications

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“…Concentrations of POC in eastern Taiwan generally shared similar vertical profiles, which basically enriched the surface and upper column of seawater and remained at a relatively low level in the under layer water (Figures 4j and 5j). Values of POC measured in this article were comparable to those reported in the northeastern Taiwan [61]. …”

Section: Profiles Of Hydrological and Carbonate Parameters In Mainstrsupporting

confidence: 86%

Carbon Chemistry in the Mainstream of Kuroshio Current in Eastern Taiwan and Its Transport of Carbon into the East China Sea Shelf

Song

Yuan

et al. 2018

Sustainability

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Abstract:Comprehensive carbon chemistry data were measured from the mainstream of Kuroshio, off eastern Taiwan, in May 2014. Results indicated that variations of pH@25 • C, POC, Ω Ca , DIC, pCO 2 and RF were closely related to the characteristics of various water types. Phytoplankton photosynthesis played important roles in DIC variation in Kuroshio Surface Water (KSW), whereas the DIC variation in Kuroshio Subsurface Water (KSSW) was probably influenced by the external transport of DIC-enriched water from the South China Sea. Vertical profiles of hydrological parameters and carbonate species indicated that the Kuroshio Current off eastern Taiwan could intrude into the ECS shelf as far as 27.9 • E, 125.5 • N in spring. What is more, the KSW, KSSW and Kuroshio Intermediate Water (KIW) could convey DIC into the East China Sea (ECS) with flux of 285, 305 and 112 Tg C/half year (1 Tg = 10 12 g), respectively. The relevant flux of POC was 0.16, 2.93 and 0.04 Tg C/half year, respectively. Consequently, the intrusion of Kuroshio could probably exert a counteracting influence on the potential of CO 2 uptake in the ECS, which needs further study.

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Section: Profiles Of Hydrological and Carbonate Parameters In Mainstrsupporting

confidence: 86%

Carbon Chemistry in the Mainstream of Kuroshio Current in Eastern Taiwan and Its Transport of Carbon into the East China Sea Shelf

Song

Yuan

et al. 2018

Sustainability

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“…an index of concentration) of colored DOM in the study area decreased with increasing salinity. Dissolved organic carbon (DOC) concentrations during the July 1998 cruise ranged from 120 µM over the inner shelf to 75 µM over the outer shelf (Hung et al 2003). Table 4 shows that the intercepts in the mixing zone (0.111 ± 0.073) were about 3 times as great as those in the oceanic zone (0.036 ± 0.025, ANCOVA, x-and y-axes are in log scales for better presentation n = 6, p < 0.05).…”

Section: Discussionmentioning

confidence: 99%

Effects of ChangJiang River summer discharge on bottom-up control of coastal bacterial growth

Shiah

Gong²,

Xiao³

2006

Aquat. Microb. Ecol.

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The East China Sea (ECS) has one of the largest shelf ecosystems in the world, and among the major external forces that affect physical and biogeochemical processes over the ECS shelf is discharge from the ChangJiang (CJ) River. This is particularly true during summer when prevailing flooding leads to the annual maxima of CJ River discharge. To explore the effects of interannual variations in CJ River summer discharge on bacterial growth rate (BGR), 6 cruises were conducted over the entire width of the ECS shelf in July ) were all negatively correlated with salinity (22.4 to 34.9 psu) during each cruise, a clear sign that river discharge had a significant effect on chemical and biological structures over the ECS shelf. Variations in BGR in the mixing zone (salinity < 33 psu) and oceanic zone (salinity > 33 psu) were positively correlated with chl a. However, the intercepts and slopes of the BGR-chl a relationship in the mixing zone were significantly higher than those in the oceanic zone. Noteworthy too is that on monthly and/or inter-annual scales, BGR-chl a coupling (i.e. the slope) in both zones changed positively with river discharge, and this coupling of the oceanic zone seems to have been more sensitive to changes in discharge. This suggests that bacterial growth in the oligotrophic zone might be more substrate-limited than that in the mixing zone. Our study is one of the few to suggest that, in summer, monthly and/or inter-annual variations in CJ River discharge might significantly alter the supply rates of inorganic nutrients and dissolved organic matter, which in turn affects the relationship between auto-and hetero-trophic processes in the ecosystem of the ECS shelf.

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“…2d, h). Although we do not have DOP measurements, previous study indicated that DOP concentrations was sufficient at the plume fringe (0.15-0.25 µM; Hung et al, 2003).…”

Section: Joint Effect Of Cdw and Coastal Upwelling On Phytoplankton Pmentioning

confidence: 94%

Joint effect of freshwater plume and coastal upwelling on phytoplankton growth off the Changjiang River

Tseng¹,

Lin

Dai

et al. 2014

Biogeosciences

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Distributions, stoichiometric patterns and cross-shelf exports of dissolved organic matter in the East China Sea

Cited by 109 publications

References 48 publications

Carbon Chemistry in the Mainstream of Kuroshio Current in Eastern Taiwan and Its Transport of Carbon into the East China Sea Shelf

Carbon Chemistry in the Mainstream of Kuroshio Current in Eastern Taiwan and Its Transport of Carbon into the East China Sea Shelf

Effects of ChangJiang River summer discharge on bottom-up control of coastal bacterial growth

Joint effect of freshwater plume and coastal upwelling on phytoplankton growth off the Changjiang River

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