한국 항만에서 환경요인이 식물플랑크톤 군집 변동에 미치는 영향

Title
한국 항만에서 환경요인이 식물플랑크톤 군집 변동에 미치는 영향
Alternative Title
Environmental factors affecting dynamics of phytoplankton community in port baseline surveys in Korea
Author(s)
권오윤; 강정훈; 차용환; 장만
KIOST Author(s)
Kang, Jung Hoon(강정훈)
Publication Year
2009-10-29
Abstract
To understand the environmental factors affecting dynamics of phytoplankton communities at the busiest ports (Pusan, Ulsan, Incheon and Gwangyang) of Korea, we seasonally investigated the physico-chemical factors and phytoplankton assemblages from February 2007 to November 2008. Diatoms were the majority in the phytoplankton communities (78%). Maximum abundance of diatoms was observed at Pusan in summer 2007, and at Ulsan in spring 2007. During each period, over 60% diatoms at Pusan were Chaetoceros debilis and Ch. pseudocrinitus, and Detonula pumilia dominated at Ulsan. At the Incheon and Gwangyang ports characterized as eutrophic and semi-enclosed environments, the abundance of diatoms peaked in winter when Skeletonema costatum dominated. It corresponded to condition of lower salinity, higher concentration of chemical oxygen demand and total suspended solids compared to Pusan and Ulsan. When diatoms bloomed at the ports investigated, there were very low concentration of silicate and nitrate (p<0.001), indicating strong nutrient uptake by the dominating diatoms. Dinoflagellates, the next most abundant group, occurred frequently at the Pusan, Ulsan and Gwangyang ports in summers, when their abundance was significantly correlated with increasing temperature and decreasing salinity (p<0.05). Also, the concentration of phosphate was high (>1 μM) at the four ports in summers. In contrast, low abundances of dinoflagellates occurred during the study period at Incheon. At all ports, the predominant diatoms characterized waters with low concentrations of nutrients such as silicate and nitrate, while dinoflagellates mainly occurred in summers, with increasing temperature, low salinity and high phosphate concentration.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/29256
Bibliographic Citation
PICES annal meeting, pp.154, 2009
Publisher
PICES
Type
Conference
Language
English
Publisher
PICES
Related Researcher
Research Interests

Biological oceanography,Zooplankton ecology,Introduction and dispersion of foreign species,생물해양학,동물플랑크톤 생리,생태,외래종 유입,확산

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