A5028844992- Marine and coastal ecosystems
- Microbial Community Ecology and Physiology
- Marine Toxins and Detection Methods
- Marine Biology and Ecology Research
- Protist diversity and phylogeny
- Marine and coastal plant biology
- Coastal wetland ecosystem dynamics
- Aquatic Ecosystems and Phytoplankton Dynamics
- Isotope Analysis in Ecology
- Coral and Marine Ecosystems Studies
- Marine Bivalve and Aquaculture Studies
- Effects and risks of endocrine disrupting chemicals
- Toxic Organic Pollutants Impact
- bioluminescence and chemiluminescence research
- European Law and Migration
- Geological formations and processes
- Linguistics and language evolution
- Photoreceptor and optogenetics research
- Marine and Coastal Research
- Marine Invertebrate Physiology and Ecology
- Aeolian processes and effects
- Mycorrhizal Fungi and Plant Interactions
- Environmental Toxicology and Ecotoxicology
- Genomics and Phylogenetic Studies
Anyang University
2017-2024
Seoul National University
2012-2022
New Generation University College
2022
Gyeongsang National University
2022
National University College
2022
Kunsan National University
2022
Survival of free-living and symbiotic dinoflagellates ( Symbiodinium spp.) in coral reefs is critical to the maintenance a healthy community. Most exist oligotrophic waters, their survival strategy such nutrient-depleted waters remains largely unknown. In this study, we found that two strains spp. cultured from environment acquired tissues Alveopora japonica had ability feed heterotrophically. fed on heterotrophic bacteria, cyanobacteria Synechococcus spp.), small microalgae both...
Red tides – discolorations of the sea surface due to dense plankton blooms occur regularly in coastal and offshore waters along much world's coastline. often cause large-scale mortalities fish shellfish significant losses aquaculture tourist industries many countries. Therefore, understanding predicting mechanisms controlling outbreak, persistence, spread, decline red are important concerns scientists, officials, industry, public. With increasing knowledge red-tide species events, new have...
Dinoflagellates in the genus Symbiodinium are ubiquitous shallow marine habitats where they commonly exist symbiosis with cnidarians. Attempts to culture them often retrieve isolates that may not be symbiotic, but instead as free-living species. In particular, cultures of clade E obtained from temperate environments were recently shown feed phagotrophically on bacteria and microalgae. Genetic, behavioral, morphological evidence indicate strains northwestern, southwestern, northeastern...
The ichthyotoxic Cochlodinium polykrikoides red tides have caused great economic losses in the aquaculture industry waters of Korea and other countries. Predicting outbreak C. 1–2 weeks advance is a critical step minimizing losses. In South Sea Korea, large tide patches often been recorded offshore transported to nearshore waters. To explore processes tides, temporal variations 3-dimensional (3-D) distributions organisms environmental parameters were investigated by analyzing 4,432 water...
Historical trends of polycyclic aromatic hydrocarbons (PAHs) contamination were reconstructed from eleven sediment cores located in intertidal zones the Yellow and Bohai seas for a period encompassing last 80 years. The analysis encompassed 15 traditional PAHs (t-PAHs), 9 emerging (e-PAHs), 30 halogenated (Hl-PAHs), including 10 chlorinated (Cl-PAHs) 20 brominated (Br-PAHs). Concentrations target highest industrial municipal areas situated along coast Sea, Huludao, Yingkou, Tianjin, Dandong,...
Abstract Copepods are a major component of metazooplankton and important prey for fish invertebrates such as crabs, shrimps, flatworms. Certain bloom-forming dinoflagellates can kill copepods, but there is little research on the interactions between copepods Karenia bicuneiformis K. selliformis . In this study, survival ingestion rates calanoid copepod Acartia hongi feeding were determined function concentration. On day 2, A. incubated with was 90–100% at all tested concentrations, while...
Mixotrophic protists play diverse roles in marine food webs as predators and prey.Thus, exploring mixotrophy phototrophic has emerged a critical step understanding cycling of materials ecosystem.To investigate the feeding newly described mixotrophic dinoflagellate Ansanella granifera, we explored mechanism different types species that A. granifera was able to feed on.In addition, measured growth ingestion rates on prasinophyte Pyramimonas sp., only algal prey, function prey concentration.A....
Occurrence of Cochlodinium polykrikoides red tides have resulted in considerable economic losses the aquaculture industry many countries, and thus predicting process C. is a critical step toward minimizing those losses. Models tide dynamics define mortality due to predation as one most important parameters. To investigate roles heterotrophic protists South Sea Korea, abundances dinoflagellates (HTDs), tintinnid ciliates (TCs), naked (NCs) were measured over one- or two-week intervals from...
Total annual net primary productions in marine and terrestrial ecosystems are similar. However, a large portion of the newly produced phytoplankton biomass is converted to carbon dioxide because predation. Which food web structure retains high plankton community global ocean? In 6954 individual samples or locations containing phytoplankton, unicellular protozooplankton, multicellular metazooplankton ocean, phytoplankton-dominated bottom-heavy pyramids held higher than...
Abstract To investigate heterotrophic protists grazing on Symbiodinium sp., we tested whether the common dinoflagellates Gyrodinium dominans , moestrupii spirale Oblea rotundata Oxyrrhis marina and Polykrikos kofoidii ciliates Balanion sp. Parastrombidinopsis preyed free‐living dinoflagellate (clade E). We measured growth ingestion rates of O. G. as a function prey concentration. Furthermore, compared results to those obtained for other algal species. In addition, predators at single...
The mixotrophic dinoflagellate Tripos furca causes red tides in the waters of many countries. To understand its population dynamics, mortality due to predation as well growth rate should be assessed. Prior present study, heterotrophic dinoflagellates Noctiluca scintillans, Polykrikos kofoidii, Protoperidinium steinii, and Fragilidium subglobosum were known ingest T. furca. However, if other common protists are able feed on has not been tested. We explored interactions between nine one naked...
Abstract Many dinoflagellate species are bioluminescent, which is one of the anti-predation mechanisms in these species. In addition, experience a wide range salinities ocean. However, effects salinity on their bioluminescence intensity has only been investigated for Here, we explored effect heterotrophic Noctiluca scintillans NSDJ2010 feeding chlorophyte Dunaliella salina , Polykrikos kofoidii PKJH1607 Alexadrium minutum and autotrophic Alexandrium mediterraneum AMYS1807. Moreover, to...
Biecheleriopsis is a genus of small marine planktonic dinoflagellates. Here, we present detailed morphological, molecular and ecophysiological characterizations adriatica based on number strains from Korea. The subunit (SSU) ribosomal DNA (rDNA) sequences two the three Korean were closely related to those previously described B. adriatica, one was identical. However, large (LSU) internal transcribed spacer region (ITS1, ITS2 5.8S) differed by 0.1–0.6% 1.0–1.6%, respectively, non-Korean...
Amphidinium massartii Biecheler is an epiphytic and toxic dinoflagellate.Prior to the present study, A. has been reported in waters off Mediterranean, Australian, USA, Canadian coasts.We isolated cells from coastal of Jeju Island, Korea their morphology rDNA sequences indicated that they were massartii.Herein, we report for first time occurrence temperate region northwestern Pacific Ocean.The large subunit (LSU) Korean strains 0.7% different those Australian strain CS-259, closest species,...
The marine phototrophic dinoflagellate Gymnodinium smaydae n. sp. is described from cells prepared for light, scanning, and transmission electron microscopy. Also, sequences of the small (SSU) large subunits (LSU) internal transcribed spacer region (ITS1-5.8S-ITS2) ribosomal DNA were analyzed. This newly isolated possessed nuclear chambers, fibrous connective, an apical groove running in a counterclockwise direction around apex, major accessory pigment peridinin, which are four key features...