Currents in the Taiwan Strait as observed by surface drifters

Qiu, Yun; Li, Li; Chen, Chen‐Tung Arthur; Guo, Xiaogang; Jing, Chunsheng

doi:10.1007/s10872-011-0033-4

Cited by 40 publications

(27 citation statements)

References 32 publications

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“…Site 5 had the lowest metal concentrations perhaps mainly because the waters there are from the Kuroshio branch (Chen and Wang 2006;Hong et al 2011;Qiu et al 2011), which is of an open-ocean origin. Sites 1-4 are also affected by the Kuroshio branch but sediments from Taiwan played a major role (Liu et al 2008a, b).…”

Section: Metals In Total Concentrationsmentioning

confidence: 99%

Trace metals in surface sediments of the Taiwan Strait: geochemical characteristics and environmental indication

Gao

Zhou

Lui

et al. 2015

Environ Sci Pollut Res

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The concentration and geochemical fractionation of six trace metals related with environmental quality assessment, namely Cd, Cr, Cu, Ni, Pb, and Zn, in 30 surface sediments from both inshore and offshore areas of the Taiwan Strait were measured to investigate their distribution characteristics, evaluate their potential mobility, and assess their pollution status. The geoaccumulation index results indicated that, on average, the studied metals presented an order of Cd>Pb>Ni>Zn>Cu>Cr and were practically in uncontaminated status except Cd. The results of the sequential extraction analysis indicated that, on average, the studied metals were mostly accumulated in residual fraction except Cd whose concentration was the highest in the acid soluble fraction presenting a high risk to the environment, and their mobility decreased in the sequence of Cd>Pb>Ni>Cu>Zn>Cr. Based on the mean probable effect level quotients, the combination of the studied metals had an 8 % probability of being toxic at two sampling sites and had a 21 % probability of being toxic at the rest of sites. The spatial distribution of the studied metals in total concentrations and different geochemical fractions corroborated the previous findings about the possible sediment transportation routes in and around the Taiwan Strait.

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Section: Metals In Total Concentrationsmentioning

confidence: 99%

Trace metals in surface sediments of the Taiwan Strait: geochemical characteristics and environmental indication

Gao

Zhou

Lui

et al. 2015

Environ Sci Pollut Res

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“…The CCC starts in mid-September, peaks from October to January and weakens thereafter (Jan and Chao, 2003;Lin et al, 2005;Wu and Hsin, 2005;Pan et al, 2012). A number of studies have investigated the water volume transport through the TWS, either based on field measurements using shipboard acoustic Doppler current profilers (sbADCPs) Wang et al, 2003), bottommounted acoustic Doppler current profilers (bm-ADCPs) (Lin et al, 2005;Jan et al, 2006), surface drifters (Qiu et al, 2011), or high-frequency radar (Zhu et al, 2008), or based on numerical models (Jan et al, 1998;Wu and Hsin, 2005;Wu et al, 2007;Fang et al, 2009). However, studies dedicated to assessing the total volume transport of the CCC and its variability and biogeochemical significance have not yet been conducted.…”

Section: Study Areamentioning

confidence: 99%

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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“…Hydrographical conditions in the coastal waters of southern China and Taiwan are strongly influenced by the monsoon-driven China Coastal Current, Kuroshio Branch Current, and South China Sea Surface Current (Qiu et al 2010). In summer, strong Kuroshio Current flows northwards along the east coast of Taiwan; a branch of the Kuroshio flows to the Taiwan Strait (Fig.…”

Section: Phylogeography Of Sipunculus Nudusmentioning

confidence: 99%

DNA barcoding reveals cryptic diversity in the peanut worm Sipunculus nudus

Hsu

Ning

Gwo

et al. 2013

Molecular Ecology Resources

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Peanut worm (Sipunculus nudus) is a cosmopolitan species mainly distributed in tropical and subtropical coastal waters. Analysis of the mitochondrial cytochrome c oxidase subunit I (COI) gene sequences among S. nudus from GenBank revealed high genetic variation (p-distance, 0.115-0.235; k2p, 0.128-0.297) and paraphyletic relationships. These indicated misidentification and/or cryptic diversity may be present in the genus Sipunculus. To understand the genetic diversity and to manage the recourse of S. nudus, we collected specimens from coastal waters of southern China and Taiwan. In the phylogenetic topology, specimens can be separated into four distinct clades; three of these clades (clade A, B and C) were only represented from this region (southern China and Taiwan), but the clade D grouped with individuals from Central America (Atlantic coast). Furthermore, individuals of clades A and D were collected at the same location, which does not support the hypothesis that this genetic break reflects contemporary geographical isolation. The four distinct clades observed among coastal waters of southern China and Taiwan indicated underestimated diversity. It is noteworthy that the cryptic diversity is vulnerable under high pressure of human activity.

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Currents in the Taiwan Strait as observed by surface drifters

Cited by 40 publications

References 32 publications

Trace metals in surface sediments of the Taiwan Strait: geochemical characteristics and environmental indication

Trace metals in surface sediments of the Taiwan Strait: geochemical characteristics and environmental indication

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

DNA barcoding reveals cryptic diversity in the peanut worm Sipunculus nudus

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