황해 저층냉수 형성 전, 후 요각류 Calanus sinicus의 수직적 분포특성
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Title
- 황해 저층냉수 형성 전, 후 요각류 Calanus sinicus의 수직적 분포특성
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Alternative Title
- Vertical distribution of the copepod Calanus sinicus before and after formation of Yellow Sea Bottom Cold Water (YSBCW) in the Yellow Sea
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Author(s)
- 강정훈; 서민호; 권오윤; 김웅서
- KIOST Author(s)
- Kang, Jung Hoon(강정훈)
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Alternative Author(s)
- 강정훈; 권오윤; 김웅서
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Publication Year
- 2011-10-20
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Abstract
- To understand effects of the Yellow Sea Bottom Cold Water (YSBCW) on the vertical distribution of the copepod Calanus sinicus, we surveyed diel vertical migration (DVM) of C. sinicus at a fixed station in the Yellow Sea before and after formation of the YSBCW. Cold water (<10°C) was observed in the bottom layer when the water column was thermally stratified in summer, while the water column was thermally well-mixed in spring. Samples were collected from five different layers at 3 hour intervals with an opening-closing net. Identified developmental stages of C. sinicus were from copepodite I (CI) to adults (CVI). Adult females (1-155 inds.m-3) showed clear DVM through the whole water column in spring, whereas adult males did not migrate. DVM of CV was not clear, while CI-CIV showed maximum residence in the upper 10-20m layer with high concentration of chlorophyll-a (chl-a). Conversely, clear DVM was not found in adult females (< 30 inds.m-3) and adult males in summer. Maximum abundances of CI-CIV also occurred consistently in the subsurface layer (20-40m) with high concentration of chl-a. CV (1-272 inds.m-3) moved upward nocturnally to the near-surface layer (10-20m) with average temperature of 25.74°C, while it was not found in the surface layer (0-10m) with 28.31°C. These results indicated that existence of the YSBCW affected the vertical distribution of all developmental stages
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/28169
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Bibliographic Citation
- PICES 2011, pp.137, 2011
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Publisher
- North Pacific Marine Science Organization
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Type
- Conference
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Language
- English
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