The Correlation between Prorocentrum donghaiense Blooms and the Taiwan Warm Current in the East China Sea - Evidence for the “Pelagic Seed Bank” Hypothesis

Dai, Xinfeng; Lu, Douding; Guan, Weibing; Xia, Ping; Wang, Hongxia; He, Peimin; Zhang, Dongsheng

doi:10.1371/journal.pone.0064188

Cited by 26 publications

(24 citation statements)

References 18 publications

(30 reference statements)

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“…However, the abundance‐based approach has its limitations that it might not work well in distinguishing algal blooms of different PSCs with the same chlorophyll concentration, since it assumes that larger cells dominate in higher concentrations and smaller cells in low concentrations. Many studies found that microplankton such as dinoflagellates were the most common dominances along coastal waters in the study area (e.g., Dai et al, ; Lou & Hu, ; Xia et al, ; Zhou et al, ) which confirmed the assumptions of the abundance‐based model. Although there are few reports, there is the possibility that small size or mixed sizes phytoplankton blooms could exist.…”

Section: Discussionsupporting

confidence: 76%

In Situ and Satellite Observations of Phytoplankton Size Classes in the Entire Continental Shelf Sea, China

et al. 2018

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Phytoplankton size classes (PSCs) is of great significance for exploring marine ecological and biogeochemical processes. Remote sensing of PSCs has been successfully applied to open oceans; however, it is still quite limited for optically complex coastal oceans. In this study, the entire continental shelf sea of China including Bohai Sea (BS), Yellow Sea (YS), and East China Sea (ECS) characterized by distinctive turbid waters and impacted by plumes of large world‐class river (the Changjiang River) was taken as an example of turbid coastal ocean for remotely sensed spatial‐temporal distributions of PSCs. In situ data were collected from cruises during April to June in 2014 and an improved algorithm for PSCs retrieval was proposed. PSCs derived from GOCI (Geostationary Ocean Color Imager) images revealed that microplankton was dominant in the BS, the YS, and the nearshore ECS and nanoplankton distributed widely in the entire study area, while picoplankton mainly distributed in the offshore ECS in April, which was consistent with in situ investigation and related to environmental factors. Validation indicated that the improved algorithm provided a more accurate estimation of PSCs, with the root mean square error (RMSE) between estimated and measured size‐fractionated concentrations been 0.774, 0.257, and 0.142 mg m−3 for micro, nano, and picoplankton, respectively. Diurnal variations of PSCs were mainly affected by tidal currents and light intensity depending on different water types. These illustrated that remote sensed spatial distributions as well as diurnal variations of PSCs are effective in turbid continental shelf seas of China.

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Section: Discussionsupporting

confidence: 76%

In Situ and Satellite Observations of Phytoplankton Size Classes in the Entire Continental Shelf Sea, China

et al. 2018

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“…Microorganisms can travel long distances by hitchhiking on ocean currents, influencing microbial community assemblies (Brum et al., ; Doblin & van Sebille, ) from prokaryotes (Hamdan et al., ; Zhao et al., ) to microeukaryotes (Pernice et al., ). Previous studies have reported algae and plankton as intruders in the ECS through the KSWM (Dai et al., ; Hsieh et al., ). Here, the KSWM also appears responsible for fungal dispersal, as highlighted by the high occurrence of OTU_26404 (close affiliation with Aspergillus nidulans ) in the KSWM and TWM and the low occurrence in the CWM.…”

Section: Discussionmentioning

confidence: 97%

“…The huge nutrient input (organic and inorganic compounds) by coastal rivers and Kuroshio water greatly influences the diversity and distribution patterns of many microorganisms in the ECS including planktonic bacteria, microalgae and zooplankton (e.g., Dai et al., ; Hsieh et al., ; Zhao et al., ). For example, Synechococcus and picoeukaryotes abundance was found to covary with nutritional conditions such as the NO 3 − , NO 2 − , PO 4 3− and SiO 3 2− concentrations (Zhao et al., ).…”

Section: Discussionmentioning

confidence: 99%

Highlighting patterns of fungal diversity and composition shaped by ocean currents using the East China Sea as a model

Wang

Pan

et al. 2017

Molecular Ecology

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How ocean currents shape fungal transport, dispersal and more broadly fungal biogeography remains poorly understood. The East China Sea (ECS) is a complex and dynamic habitat with different water masses blending microbial communities. The internal transcribed spacer 2 region of fungal rDNA was analysed in water and sediment samples directly collected from the coastal (CWM), Kuroshio (KSWM), Taiwan warm (TWM) and the shelf mixed water mass (MWM), coupled with hydrographic properties measurements, to determine how ocean currents impact the fungal community composition. Almost 9k fungal operational taxonomic units (OTUs) spanning six phyla, 25 known classes, 102 orders and 694 genera were obtained. The typical terrestrial and freshwater fungal genus, Byssochlamys, was dominant in the CWM, while increasing abundance of a specific OTU affiliated with Aspergillus was revealed from coastal to open ocean water masses (TWM and KSWM). Compared with water samples, sediment harboured an increased diversity with distinct fungal communities. The proximity of the Yangtze and Qiantang estuaries homogenizes the surface water and sediment communities. A significant influence of ocean currents on community structure was found, which is believed to reduce proportionally the variation explained by environmental parameters at the scale of the total water masses. Dissolved oxygen and depth were identified as the major parameters structuring the fungal community. Our results indicate that passive fungal dispersal driven by ocean currents and river run-off, in conjunction with the distinct hydrographic conditions of individual water masses, shapes the fungal community composition and distribution pattern in the ECS.

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“…Particularly, compared to the southward flowing ZMCC, the direction and velocity of the TWC are relatively stable, flowing northeastward with annual mean speed about 14 cm s 21 , and seasonal mean speed about 13 and 17 cm s 21 in winter and summer, respectively [Guan and Fang, 2006]. As one of major currents in the ECS, the TWC has an overwhelming influence on the heat, salt, and nutrients balance on the ECS shelf [Fang et al, 1991;Guan and Fang, 2006;Chen, 2009], and to some extent results in upwelling, hypoxia, and algal bloom in the Changjiang Estuary and adjacent shelf areas [Qiao et al, 2006;Wei et al, 2007;Wang, 2009;Dai et al, 2013]. Despite the significant influence of the TWC on the shelf environment and ecosystem, its origin and flow pathway have been intensely debated over the last several decades.Early hydrographic surveys suggest that the TWC originates from the branching of Kuroshio Current northeast of Taiwan [Uda, 1934;Mao et al, 1964], while Guan [1984 pointed out that in summer it should stem in the Taiwan Strait and flows northeastward based on the historical current data from 1932 to 1977 (Figure 1a).…”

mentioning

confidence: 99%

Kuroshio subsurface water feeds the wintertime Taiwan Warm Current on the inner East China Sea shelf

Lian

Yang

et al. 2016

JGR Oceans

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The Taiwan Warm Current (TWC) has an overwhelming influence on the heat, salt, and nutrients balance on one of the broadest shelf in the world, the East China Sea shelf. In winter, the TWC flows in an unusual upwind direction and reaches the Changjiang (Yangtze River) Estuary, but its origin and pathway are intensely debated. Here combined evidences from current measurement, hydrographic, and stable isotopic data all suggest that the wintertime TWC intrusion off the Changjiang Estuary mainly originates from the Kuroshio subsurface water northeast of Taiwan, rather than from the Taiwan Strait warm water. The Kuroshio‐branched water northeast of Taiwan can intrude into the inner shelf near the Zhe‐Min Coast via bottom layer, manifesting by a pronounced boundary at 50 m isobath around 28°N, and thereby feeds the TWC intrusion into the Changjiang Estuary. The intrusion complicates the hydrological process in the estuary and shelf sea, and its impact on marine environment deserves more research attentions.

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The Correlation between Prorocentrum donghaiense Blooms and the Taiwan Warm Current in the East China Sea - Evidence for the “Pelagic Seed Bank” Hypothesis

Cited by 26 publications

References 18 publications

In Situ and Satellite Observations of Phytoplankton Size Classes in the Entire Continental Shelf Sea, China

In Situ and Satellite Observations of Phytoplankton Size Classes in the Entire Continental Shelf Sea, China

Highlighting patterns of fungal diversity and composition shaped by ocean currents using the East China Sea as a model

Kuroshio subsurface water feeds the wintertime Taiwan Warm Current on the inner East China Sea shelf

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