A hierarchy of conceptual models of red-tide generation: Nutrition, behavior, and biological interactions

Jeong, Hae Jin; Lim, An Suk; Franks, Peter J. S.; Lee, Kyung Ha; Kim, Ji Hye; Kang, Nam Seon; Lee, Moo Joon; Jang, Se Hyeon; Lee, Sung Yeon; Yoon, Eun Young; Park, Jae Yeon; Yoo, Yeong Du; Seong, Kyeong Ah; Kwon, Ji Eun; Jang, Tae Young

doi:10.1016/j.hal.2015.06.004

Cited by 128 publications

(70 citation statements)

References 231 publications

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“…This characteristic is not linked to the competition for resources or interactions with specific grazers. Even the toxic blooms can be grazed extensively (Jeong et al, 2015). We can thus assume that many other cellular metabolites can have allelopathic effects without affecting animal physiology and conversely, are not measured.…”

Section: Silicate Dependencementioning

confidence: 99%

“…The familiar assumption in aquatic microbiology (Bass Becking, 1934) that all the species are in the environment (Everything Is Everywhere) but environmental selection leads to species succession, also identifies interspecific competition as one of the key processes in coastal environment management. However, HABs species are mainly simulated in the environment alone (MacIntyre et al, 2004;Fauchot et al, 2008;He et al, 2008;Jeong et al, 2015 for three of the four groups proposed) or with a physiological description that differs between the other phytoplankton functional types (Lacroix et al, 2007). The relevance of the competition for resources is thus difficult to estimate because a great part of the community adaptation is removed by this reduction.…”

Section: Introductionmentioning

confidence: 99%

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Resource Competition Affects Plankton Community Structure; Evidence from Trait-Based Modeling

et al. 2017

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Understanding the phenology of phytoplankton species is a challenge and despite a lot of theoretical work on competition for resources, this process is under-represented in deterministic models. To study the main driver of the species selection, we used a trait-based model that keeps phenotypic variability through physiological trait parameterization. Next, we validated the results by using the toxic dinoflagellate Alexandrium minutum which is a toxic species. Due to their monitoring, we show that harmful algae are ideal models for studying ecological niches and for contributing to this more global challenge. As a first step, a dimensionless model of an estuary (France) was built with water temperature and water exchanges deduced from a hydro-dynamic model. The biological parametrization takes into account the size (from pico-to microphytoplankton) and the type of assimilation. The results show that temperature, competition for nutrients and dilution are important factors regulating the community structure and Alexandrium minutum dynamics (more especially the bloom initiation and magnitude). These drivers contribute to the determination of the ecological niche of A. minutum, influence the shape of its blooms and provide potential explanations of its interannual variability. This approach makes the community structure more flexible in order to study how environmental forcings could drive its evolution.

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Section: Silicate Dependencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Resource Competition Affects Plankton Community Structure; Evidence from Trait-Based Modeling

et al. 2017

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“…In particular, some Gyrodinium species are effective grazers of various red‐tide organisms, and sometimes control prey populations (Jeong et al. ; Kim and Jeong ; Sherr and Sherr , ; Yoo et al. ).…”

mentioning

confidence: 99%

Gyrodinium jinhaense n. sp., a New Heterotrophic Unarmored Dinoflagellate from the Coastal Waters of Korea

Jang

Jeong

Lee

et al. 2019

J Eukaryotic Microbiology

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Four unarmored heterotrophic dinoflagellates were isolated from the coastal waters of southern Korea. The rDNA sequences of four clonal cultures were determined, and the morphology of one of the four strains was examined using light and scanning and transmission electron microscopy. The large subunit (LSU) and small subunit (SSU) rDNA sequences of each of the strains differed by 0–0.9% from those of the other strains, and the SSU rDNA sequence of the strain differed by 1.8–4.4% from those of other Gyrodinium species, whereas the LSU (D1–D2) rDNA sequence differed by 12.4–22.2%. Furthermore, phylogenetic trees showed that Gyrodinium jinhaense n. sp. formed a distinctive clade among the other Gyrodinium species. Meanwhile, microscopy revealed an elliptical bisected apical structure complex and a cingulum that was displaced by approximately one‐quarter of the cell length, which confirmed that the dinoflagellate belonged to the genus Gyrodinium. However, the cell surface was ornamented with 16 longitudinal striations, both on the episome and hyposome, unlike other Gyrodinium species. Furthermore, the cells were observed to have pusule systems and trichocysts but lacked mucocysts. Based on morphology and molecular data, we consider this strain to be a new species in the genus Gyrodinium and thus, propose that it be assigned to the name G. jinhaense n. sp.

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“…DOM additions have been shown to stimulate algal growth; however, this growth stimulation is generally attributed to the DON (Doblin et al 1999;Fagerberg et al 2009;Loureiro et al 2009;Filippino et al 2011;Cawley et al 2013). In addition to osmotrophy, it is well-known that grazing by dinoflagellate mixotrophs can contribute to their nutrition (Jeong et al 2005a(Jeong et al , 2015Burkholder et al 2008). In a study of Alexandrium catenella, Collos et al (2013) found that only 47% of the C demand was met by bicarbonate uptake and the remainder was made up through grazing.…”

Section: Advantages Of Mixotrophymentioning

confidence: 99%

“…(Marshall et al 2003(Marshall et al , 2005(Marshall et al , 2009) that are known to be mixotrophic (Jeong et al 2005a(Jeong et al , b, 2015Lewitus 2006;Burkholder et al 2008). Mixotrophs are capable of photoautotrophic carbon (C) assimilation as well as heterotrophic C Communicated by Paul A. Montagna acquisition through grazing on co-occurring plankton (phagotrophy) and/or uptake of DOM (osmotrophy) (Graneli et al 1999;Stoecker 1999;Burkholder et al 2008;Hansen 2011;Jeong et al 2015). Mixotrophic metabolisms were originally thought to be advantageous in oligotrophic environments where inorganic nutrients might be limiting (e.g., Tittel et al 2003); however, metabolic flexibility is now known to be beneficial to organisms in eutrophic environments where light may limit photoautotrophic growth and N-rich organic compounds are abundant .…”

Section: Introductionmentioning

confidence: 99%

Blooms of Dinoflagellate Mixotrophs in a Lower Chesapeake Bay Tributary: Carbon and Nitrogen Uptake over Diurnal, Seasonal, and Interannual Timescales

Mulholland

Morse

Egerton

et al. 2018

Estuaries and Coasts

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A multi-year study was conducted in the eutrophic Lafayette River, a sub-tributary of the lower Chesapeake Bay during which uptake of inorganic and organic nitrogen (N) and C compounds was measured during multiple seasons and years when different dinoflagellate species were dominant. Seasonal dinoflagellate blooms included a variety of mixotrophic dinoflagellates including Heterocapsa triquetra in the late winter, Prorocentrum minimum in the spring, Akashiwo sanguinea in the early summer, and Scrippsiella trochoidea and Cochlodinium polykrikoides in late summer and fall. Results showed that no single N source fueled algal growth, rather rates of N and C uptake varied on seasonal and diurnal timescales, and within blooms as they initiated and developed. Rates of photosynthetic C uptake were low yielding low assimilation numbers during much of the study period and the ability to assimilate dissolved organic carbon augmented photosynthetic C uptake during bloom and non-bloom periods. The ability to use dissolved organic C during the day and night may allow mixotrophic bloom organisms a competitive advantage over co-occurring phytoplankton that are restricted to photoautotrophic growth, obtaining N and C during the day and in well-lit surface waters.

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A hierarchy of conceptual models of red-tide generation: Nutrition, behavior, and biological interactions

Cited by 128 publications

References 231 publications

Resource Competition Affects Plankton Community Structure; Evidence from Trait-Based Modeling

Resource Competition Affects Plankton Community Structure; Evidence from Trait-Based Modeling

Gyrodinium jinhaense n. sp., a New Heterotrophic Unarmored Dinoflagellate from the Coastal Waters of Korea

Blooms of Dinoflagellate Mixotrophs in a Lower Chesapeake Bay Tributary: Carbon and Nitrogen Uptake over Diurnal, Seasonal, and Interannual Timescales

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