Spatiotemporal distribution of size-fractioned phytoplankton in the Yalu River Estuary, China

Yin, Luqiao; Song, Lu; Song, Guangjun; Wu, Jinhao; Wang, Kun; Wang, ZaoHui.; Liu, SuXuan.

doi:10.1080/20964129.2022.2133637

Cited by 2 publications

(2 citation statements)

References 35 publications

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“…All these species have a type E eyespot and small sizes with ranges of 9.6-15.5 µm in length and 7.3-12.4 µm in width (Jeong et al 2014a, Dawut et al 2018, Sampedro et al 2022). These species have been found in many regions globally as vegetative cells or cysts (Jeong et al 2014a, Belevich et al 2021, Liu et al 2022, 2023, Pratomo et al 2022, Sampedro et al 2022). The presence of A. granifera has been reported in Korea, China, Indonesia, the Yellow Sea, and the Kara Sea (Jeong et al 2014a, Belevich et al 2021, Liu et al 2022, 2023, Pratomo et al 2022.…”

Section: Preparation Of Experimental Organismsmentioning

confidence: 99%

“…These species have been found in many regions globally as vegetative cells or cysts (Jeong et al 2014a, Belevich et al 2021, Liu et al 2022, 2023, Pratomo et al 2022, Sampedro et al 2022). The presence of A. granifera has been reported in Korea, China, Indonesia, the Yellow Sea, and the Kara Sea (Jeong et al 2014a, Belevich et al 2021, Liu et al 2022, 2023, Pratomo et al 2022. Furthermore, A. granifera caused huge red tides in Manzanillo City, southeastern Cuba in August 2018, with a maximum concentration of 2.16 × 10 5 cells mL -1 (Moreira-González et al 2021).…”

Section: Preparation Of Experimental Organismsmentioning

confidence: 99%

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Feeding by common heterotrophic protists on the mixotrophic dinoflagellate Ansanella granifera (Suessiaceae, Dinophyceae)

Kang¹,

Jeong²,

Lim³

et al. 2023

Algae

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The mortality rate of red-tide dinoflagellates owing to predation is a major parameter that affects their population dynamics. The dinoflagellates Ansanella granifera and Ansanella sp. occasionally cause red tides. To understand the interactions between common heterotrophic protists and A. granifera, we explored the feeding occurrence of nine heterotrophic protists on A. granifera and the growth and ingestion rates of the heterotrophic dinoflagellate Gyrodinium dominans on A. granifera as a function of prey concentration and those of Oxyrrhis marina at a single high prey concentration. The heterotrophic dinoflagellates Aduncodinium glandula, G. dominans, Gyrodinium moestrupii, Luciella masanensis, Oblea rotunda, O. marina, Polykrikos kofoidii, and Pfiesteria piscicida and the naked ciliate Strombidium sp. were able to feed on A. granifera. With increasing mean prey concentrations, the growth and ingestion rates of G. dominans feeding on A. granifera rapidly increased and became saturated or slowly increased. The maximum growth and ingestion rates of G. dominans on A. granifera were 0.305 d-1 and 0.42 ng C predator-1 d-1 (3.8 cells predator-1 d-1), respectively. Furthermore, the growth and ingestion rates of O. marina on A. granifera at 1,700 ng C mL-1 (15,454 cells mL-1) were 0.037 d-1 and 0.19 ng C predator-1 d-1 (1.7 cells predator-1 d-1), respectively. The growth and ingestion rates of G. dominans and O. marina feeding on A. granifera were almost the lowest among those on the dinoflagellate prey species. Therefore, G. dominans and O. marina may prefer A. granifera less than other dinoflagellate prey species. The low mortality rate of A. granifera may positively affect its bloom formation.

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Section: Preparation Of Experimental Organismsmentioning

confidence: 99%

Section: Preparation Of Experimental Organismsmentioning

confidence: 99%

Feeding by common heterotrophic protists on the mixotrophic dinoflagellate Ansanella granifera (Suessiaceae, Dinophyceae)

Kang¹,

Jeong²,

Lim³

et al. 2023

Algae

View full text Add to dashboard Cite

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A Physical Perspective of Recurrent Water Quality Degradation: A Case Study in the Jiangsu Coastal Waters, China

et al. 2023

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Estuarine‐coastal systems receive pollutants from various sources at an alarming rate. Some systems are extremely susceptible to terrestrial input, as a relatively small amount of pollutant loading induces lasting water quality degradation. The Jiangsu coastal waters (JCWs), located in the southwestern Yellow Sea, are such areas that lack large river discharge but suffer from recurrent eutrophication recently. We hypothesize that the low flushing efficiency in the JCWs largely accounted for the susceptibility to coastal pollution. To test it, transit time (TT) and pollutant flushing rates in the JCWs were estimated under various scenarios using a validated three‐dimensional hydrodynamic model. Results show that TT in many inshore waters of the JCWs and the northern radial sand ridges is >240 days, which are consistent with the observed frequently eutrophic areas. The JCWs are better flushed and thus less eutrophic in summer, as a consequence of the stronger tidal residual coastal circulation. The baroclinic pressure gradient, modulated by the formation and destruction of thermal stratification in offshore waters, poses a dominant control on the seasonal variations of the coastal circulation and flushing rates, while wind effects are secondary. River‐borne pollutants from the Yangtze and Jiangsu local rivers are shown to primarily affect regions south and north of 32.5°N, respectively. Our study interprets the vulnerability of the JCWs to pollutant enrichment from a physical perspective and finds the flushing efficiency to be a good indicator of eutrophication, providing references for environmental managers of local and global estuarine‐coastal systems with recurrent pollution.

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Spatiotemporal distribution of size-fractioned phytoplankton in the Yalu River Estuary, China

Cited by 2 publications

References 35 publications

Feeding by common heterotrophic protists on the mixotrophic dinoflagellate Ansanella granifera (Suessiaceae, Dinophyceae)

Feeding by common heterotrophic protists on the mixotrophic dinoflagellate Ansanella granifera (Suessiaceae, Dinophyceae)

A Physical Perspective of Recurrent Water Quality Degradation: A Case Study in the Jiangsu Coastal Waters, China

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