Effects of environment factors on the phytoplankton assemblages of the southeastern Yellow Sea in spring and summer

Title
Effects of environment factors on the phytoplankton assemblages of the southeastern Yellow Sea in spring and summer
Author(s)
장풍국; 신경순; 강정훈; 권오윤
KIOST Author(s)
Jang, Pung Guk(장풍국)Shin, Kyoung Soon(신경순)Kang, Jung Hoon(강정훈)
Publication Year
2012-12-18
Abstract
This study was conducted to investigate the relationship between environment factors and phytoplankton assemblage in the southeastern Yellow Sea. Nutrient in spring showed a relative high concentration at the upper layer, compared to summer. Phytoplankton biomass in the study area was potentially controlled by nitrate concentration; Diatom was dominated at all stations in spring due to the supplied nutrient by the seasonal mixing, however, diatom dominated at the A line, and nanoflagellate was dominated at the E line in summer. This is caused by the effect of low light condition due to the upwelling event in the E line in summer. In spring, Skeletonema costatum-like usually dominated in the stations characterized by the relatively high phosphate concentration, whereas Thalassiosira. nordenskioldli usually dominated in the stations characterized by the relatively low concentration of phosphate and silicate. Leptocylindrus danicus usually dominated near the coastal area, in which the light condition showed low values by the upwelling event. In summer, small sized phytoplankton over competed with large sized phytoplankton. However, Thalassiosira prosckinae, small chained diatom species, was dominated at the A line and nanoflagellate in the E line, which may be the difference floating ability and the adaptation ability of light condition. This study suggests that the difference of phytoplanktommer. Phytoplankton biomass in the study area was potentially controlled by nitrate concentration; Diatom was dominated at all stations in spring due to the supplied nutrient by the seasonal mixing, however, diatom dominated at the A line, and nanoflagellate was dominated at the E line in summer. This is caused by the effect of low light condition due to the upwelling event in the E line in summer. In spring, Skeletonema costatum-like usually dominated in the stations characterized by the relatively high phosphate concentration, whereas Thala
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/20671
Bibliographic Citation
The 4th Korea/china Joint Workshop on Yellow Sea Cold Water, pp.5, 2012
Publisher
KIOST
Type
Conference
Language
English
Publisher
KIOST
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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