A5064842107- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Fish Ecology and Management Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and coastal plant biology
- Marine Bivalve and Aquaculture Studies
- Agriculture, Soil, Plant Science
- Microbial Community Ecology and Physiology
- Marine and Coastal Research
- Marine and fisheries research
- Coastal and Marine Management
- Fecal contamination and water quality
- Isotope Analysis in Ecology
- Protein Hydrolysis and Bioactive Peptides
- Meat and Animal Product Quality
- Aquatic and Environmental Studies
- Algal biology and biofuel production
- Protist diversity and phylogeny
- Food Quality and Safety Studies
- Statistical and Computational Modeling
- Marine and environmental studies
- Lattice Boltzmann Simulation Studies
- Optical Network Technologies
- Child Nutrition and Water Access
- Diatoms and Algae Research
Mokpo National Maritime University
2014-2023
Environmental Protection Agency
2007
William & Mary
1998-2002
The dynamics of phytoplankton size structure were investigated in the freshwater, transitional and estuarine zones York River over an annual cycle. contribution large cells (microplankton, >20 μm) to total concentrations chlorophyll a increased downstream during winter, whereas that small (nanoplankton, 3–20 μm; picoplankton, <3 summer. In freshwater region, micro was significant warm seasons (spring summer) but not colder (winter), small-sized (especially picoplankton) cold seasons....
The Yeongsan River estuary (the Republic of Korea) is turbid and eutrophic under a temperate monsoon climate has recently undergone weir impoundments in its freshwater zone. We conducted analyses to determine changes the hydrology, water quality, algal blooms caused by impoundment 2011. Historical records (2004–2016) sampling data collected along channel zones over annual cycles from 2014 2015 were analyzed identify these their underlying mechanisms. Kruskal–Wallis test, Mann–Whitney U test...
Mullet, a coastal fish species, is commonly used as salted dried in many countries, including Korea, Japan, and the southeastern United States. The purpose of this investigation was to develop high-quality products semi-dried mullet (SSDM) using natural salt Salicornia herbacea L. (SAL). antioxidant activity SAL investigated by vitro studies. physicochemical nutritional characteristics fresh (FM), control (SSDM-CON), SAL-treated (SSDM-SAL) groups were analyzed. moisture, ash, crude protein...
Various waterborne pathogens originate from human or animal feces and may cause severe gastroenteric outbreaks. Bacteroides spp. that exhibit strong host- group-specificities are promising markers for identifying fecal sources their origins. In the present study, 240 water samples were collected two major aquaculture areas in Republic of Korea over a period approximately 1 year, concentrations occurrences four host-specific (human, poultry, pig, ruminant) evaluated study areas. Host-specific...
The Youngsan River estuary, located on the southwest coast of South Korea, has transitioned from a natural to an artificial estuary since dike construction in 1981 separated freshwater and seawater zones. This transition induced changes physical properties circulation within which led hypoxia algal blooms. In this study, neural network (ANN) model was employed simulate phytoplankton variations, including blooms size fractions based chlorophyll a, using data obtained by long-term monitoring...
Characteristics of benthic microalgae and sediment properties were investigated for the intertidal flats Kwangyang Bay, Korea.Sampling stations selected every 100 m in from land-side to open ocean at two different sampling sites.Samples collected June 2004, July, September, November, February May 2005.Sediments measured including temperature, water contents, bulk density, nutrient concentrations porewater.Chlorophyll a surface (0.5 cm) relationships between chlorophyll various analyzed...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 228:91-101 (2002) - doi:10.3354/meps228091 Ecosystem modeling analysis of size-structured phytoplankton dynamics in York River estuary, Virginia (USA). II. Use a plankton ecosystem model for investigating controlling factors on and nutrient Yongsik Sin*, Richard L. Wetzel** School Science, Institute Science...
결론적으로 전체 식물플랑크톤과 소형식물플랑크톤의 생체량이 높았던 2월에는 규조류 S. costatum과 Thalassiosira spp.가 우점하였으며 특히 내측해역에서 높은 농도를 보였는데 이는 2월의 낮은 수온과 내측해역의 풍부한 규산염에 의한 영향으로 판단된다. 5월에는 소형식물플랑크톤이 상당히 감소하였는데 영양염의 감소 인산염 제한에 것으로 사료된다. 미소형식물플랑크톤의 기여율이 높게 나타났고 Rhizosolenia spp.와 Pseudo-nitzschia 우점하였으나 2월에 비해 chlorophyll a 나타내고 있으며 농도의 영양염 DIN:DIP와 Si:DIP의 분포를 통해서도 알 수 있듯이 인산염의 농도가 크게 작용한 담수 유입으로 인해 염분이 낮았던 7월에는 평균 58.4%의 기여율을 보였으며, 미소형식물플랑크톤은 32.6%의 보여주고 있다. 또한 monad type의 phytoflagellate와 남조류 Oscillatoria 우세하였고 외측해역에서는...
The effects of weirs on fish and other biological communities have garnered considerable study, whereas the community composition toxic cyanobacteria not yet been well documented. In this temporal spatial variations in species abundance potentially were investigated riverine regions temperate Youngsan River estuary, where two recently constructed. Four stations sampled 0.5 m below surface monthly along channel upper river from May 2014 to April 2015 explore cyanobacterial abundance, while...
The effects of benthic microalgae on sediment nutrient fluxes were investigated at three sites across the intertidal zone lower Yaquina Bay. Study selected where microalage present but seagrass and mud shrimp absent. Sediment columns collected seasonally from one to stations September 1999 through August 2000 determine seasonal spatial range in fluxes. Collected sediments carried nearby laboratory for light dark incubation experiments. Nitrate ranged −122 −4 μmol N m−2 hr−1, whereas ammonia...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 228:75-90 (2002) - doi:10.3354/meps228075 Ecosystem modeling analysis of size-structured phytoplankton dynamics in York River estuary, Virginia (USA). I. Development a plankton ecosystem model with explicit feedback controls and hydrodynamics Yongsik Sin*, Richard L. Wetzel** School Science, Institute Science...
Abstract The mullet ( Chelon haematocheilus ) is a cosmopolitan coastal species. It often consumed as sliced raw fish in Korea and dried salted roe several countries, including the southeastern United States Japan. In this study, to optimize traditional processing of semidried (SSDM) for development high‐quality products, nine different types process were applied, quality changes physicochemical, nutritional, sanitary properties observed. approximate composition SSDM was follows: moisture,...
The Yeongsan River estuary is experiencing increased concentrations of nutrient and organic matter due to its bank (sea dike). opening floodgates at the leads a substantial inflow freshwater into saltwater zone, thereby resulting in water quality changes. Our study evaluated spatiotemporal variations limitation zones estuary, which expected fluctuate with changing seasons. We utilized N:P ratio evaluate potential conducted bioassay experiments directly assess actual limitation. showed that P...
Spring diatom blooms dominate the annual cycle of phytoplankton abundance in temperate freshwater systems. Many researchers have questioned whether severe are attributable to a single species and warrant identification similar, concurrently occurring organisms. Here, we investigated spring system (Yeongsan River, South Korea) that is thought predominantly include Stephanodiscus hantzschii. Water samples were collected from four different sites during occurred March 2015. We analysed...
아산만 식물플랑크톤의 군집구조 변화를 파악하기 위하여 총 5개 정점을 선정하여 2008년 1월부터 12월까지 월별 조사를 실시하였다. 조사기간 동안 두 번에 걸쳐(2월, 8월) 식물플랑크톤 대발생이 발생하였고, 시기에 따라 발생 위치가 다르게 나타났다. 7개 분류군(Bacillariophyceae, Chlorophyceae, Chrysophyceae, Cryptophyceae, Cyanophyceae, Dinophyceae, Euglenophyceae) 134종이 출현하였다. 대체로 규조류(Bacillariophyceae)가 우세한 분포를 보였으나 하계에는 와편모조류가 증가하였고 내측해역보다는 외측해역에서 개체밀도가 높게 우점종과 차우점종 역시 규조류인 경우가 많았으나 6월부터 7월에는 우점 및 차우점종으로 생태지수 분석결과 종다양성지수는 내측에서 외측으로 갈수록 높았으며 우점도지수는 상반된 결과를 나타내었다. Phytoplankton community composition...