The China Coastal Current as a driving force for transporting Calanus sinicus (Copepoda: Calanoida) from its population centers to waters off Taiwan and Hong Kong during the winter northeast monsoon period

Hwang, Jiang‐Shiou

doi:10.1093/plankt/fbh162

Cited by 105 publications

(91 citation statements)

References 12 publications

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“…The zooplankton communities in the boundary waters of the northeastern South China Sea are unique and complex as a result of the collective impacts of these three water circulations (Hwang et al 1998;Shih and Chiu 1998;Hwang and Wong 2005;Hwang et al 2006). This notion could be substantiated by our present investigation.…”

Section: Discussionmentioning

confidence: 99%

“…Along the Taiwan Strait and the southern edge of the East China Sea, water circulations are strongly influenced by monsoon winds. During the NE monsoon period in winter (September to April), the China Coastal Current brings cold water from the Yellow Sea and from the East China Sea to the Taiwan Strait (Liu et al 2003;Tseng and Shen 2003;Hwang and Wong 2005;Hwang et al 2006;Chang et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Water mass transport through the northern Bashi Channel in the northeastern South China Sea affects copepod assemblages of the Luzon Strait

Dahms

Hwang

2014

Zool. Stud.

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Background: It is controversial to what extent the intrusion of the Kuroshio Branch Current to the Luzon Strait and the South China Sea circulation can shape copepod assemblages around southern Taiwan. We tested the hypothesis that currents such as the Kuroshio Current bring marine zooplankton and copepods from subtropical and tropical waters to the south of Taiwan. We studied copepod assemblages from the Bashi Channel in the northeastern South China Sea at the coast of southwest Taiwan during early October 1996. Results: A total of 77 copepod species were identified from 34 genera that included calanoids, cyclopoids, harpacticoids, and poecilostomatoids. Several indicator species suggest that the study area is highly influenced by water masses from the northern South China Sea as well as from the Kuroshio Current. Acrocalanus gracilis (Paracalanidae, Calanoida) was most abundant (with a relative abundance (RA) of 22.07 and an occurrence rate (OR) of 100%), followed by Paracalanus aculeatus (Paracalanidae, Calanoida) and Oncaea venusta (Cyclopoida). The stations close to the Kuroshio Current showed a higher species diversity (H') and a higher species richness with 3.9 to 4.6 at moderate abundance, whereas station 11 showed lowest species diversity (H') with (2.1), accompanied by the far lowest species number (14) and abundance (880 ind./100 m 3 ).

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water mass transport through the northern Bashi Channel in the northeastern South China Sea affects copepod assemblages of the Luzon Strait

Dahms

Hwang

2014

Zool. Stud.

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“…Shark assimilation of terrestrialderived carbon was probably through consumption of zooplanktivores, which assimilated carbon, via comsumption of zooplankton, from suspended particulate organic matter composed of phytoplankton, heterotrophic protists and detrital organic matter (including terrestrialderived carbon). Both pre-mature and adult sharks had higher levels of zooplankton FA biomarkers in the outer estuary during the dry season attributable to enhanced abundance of zooplankton (e.g., copepods) which are carried into the PRE by the China Coastal Current during the northeast monsoon period (Hwang and Wong 2005).…”

Section: Discussionmentioning

confidence: 99%

Monsoons and habitat influence trophic pathways and the importance of terrestrial‐marine linkages for estuary sharks

Wai¹,

Yeung²,

Lam³

et al. 2012

Ecosphere

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Abstract. Tropical estuaries often receive enhanced fluxes of terrestrial derived organic matter and phytoplankton during the wet season, and such monsoonal events may significantly influence the trophic dynamics of these systems. This study examined spatio-temporal terrestrial-marine linkages in a tropical estuary, the Pearl River Estuary (PRE), southern China, by investigating trophic pathways leading to estuary sharks. We investigated spatial (inshore vs. offshore) and seasonal (wet vs. dry season) variation in the relative importance of terrestrial-and marine-derived carbon, so as to assess the contribution of detrital pathways to the pelagic spadenose shark, Scoliodon laticaudus; ontogentic changes in shark diets were also documented. Stable isotope analyses (SIA) and fatty acid (FA) profiling indicated that spadenose sharks assimilated both marine and terrestrial carbon via consumption of zooplantivorous fish and shrimps. Detrital carbon sources were more important to juvenile and pre-mature sharks at inshore locations, especially during the wet season when river discharge increased and terrestrial detritus was more abundant. Ontogenetic dietary shifts were evident: juvenile and pre-mature sharks had significantly higher levels of bacterial (detrital) FA than adults which contained more animal-derived FA. Inshore sharks, with more depleted d 13 C signatures, relied more on terrestrial carbon than sharks offshore. Comparison of spadenose shark FA profiles with those of the sympatric, white-spotted bamboo shark (Chiloscyllium plagiosum)-a benthic predator that acquires detrital carbon via consumption of polychaetes and crustaceans-revealed that they made greater use of detrital carbon sources. However, spadenose sharks in the inner estuary assimilated higher proportions of terrestrial detritus (44-56%) than bamboo sharks (31-45%). The importance of terrestrial detritus for both shark species demonstrated the important contribution of terrestrial detritus to both pelagic and benthic food webs in the PRE. Terrestrial-marine linkages are therefore of great significance, particularly during the wet season, in this estuarine system, which serves as feeding and nursery grounds for both shark species, and trophic subsidies from land are likely to be important for marine predators in other tropical estuaries.

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“…This is the first direct evidence for the possible seasonal transport of MSP community between southeastern Arabian Sea and southwestern Bay of Bengal. The importance of coastal currents in transporting copepods between geographically distant regions has been fairly known from elsewhere (see Hwang and Wong, 2005 and references therein).…”

Section: Winter Monsoonmentioning

confidence: 99%

Re-evaluation of ‘paradox of mesozooplankton’ in the eastern Arabian Sea based on ship and satellite observations

Jyothibabu

Madhu

Habeebrehman

et al. 2010

Journal of Marine Systems

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In the central and eastern Arabian Sea (EAS), biomass and production of phytoplankton are known to vary spatially and seasonally whereas, biomass of mesozooplankton (MSP) is reported to be constant. This apparent contradiction has been called 'Arabian Sea Paradox'. However, it is important to note that the paradox of MSP is based on a very limited seasonal data (from 5-7 locations). Therefore, we reconsidered the paradox of MSP based on intensive in-situ observations at 39 -40 locations in the EAS. In agreement with the known seasonal difference in phytoplankton standing stock in the EAS, we analysed the MSP data in two ways using two-way nested ANOVA. In 'basin scale' analysis, MSP data were analysed from the EAS were pooled and seasonal and inshore -offshore variations were analysed for the entire region. In 'regional scale' analysis, MSP data were analysed separately for (a) northern region (north of 15°N) and (b) southern regions (15°N and south of it). Satellite data of chlorophyll a, SST and wind speed were also analysed to show the major differences in oceanographic features in the northern and southern EAS. The analyses showed prominently high chlorophyll a (av. 1mg m ) in the southern region during most of the year mainly due to thermohaline stratification. The MSP biomass was distributed almost in a similar way as that of phytoplankton stock with statistically significant spatial and seasonal variations in the northern and southern regions. In this paper, we review the 'paradox of MSP' and present clear and new evidences to show that this concept is not logically applicable for EAS.

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The China Coastal Current as a driving force for transporting Calanus sinicus (Copepoda: Calanoida) from its population centers to waters off Taiwan and Hong Kong during the winter northeast monsoon period

Cited by 105 publications

References 12 publications

Water mass transport through the northern Bashi Channel in the northeastern South China Sea affects copepod assemblages of the Luzon Strait

Water mass transport through the northern Bashi Channel in the northeastern South China Sea affects copepod assemblages of the Luzon Strait

Monsoons and habitat influence trophic pathways and the importance of terrestrial‐marine linkages for estuary sharks

Re-evaluation of ‘paradox of mesozooplankton’ in the eastern Arabian Sea based on ship and satellite observations

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