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한국환경생물학회 / v.28, no.4, 2010년, pp.202-211 
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2009년 추계 독도연안의 수환경과 식물플랑크톤 군집의 수심별 변화
( Vertical Variations of Water Environments and Phytoplankton Community during the 2009 Autumn in the Coast of Dokdo, Korea ) |
| 김윤삼;박경우;박정원;전경희;김미경; 영남대학교 생물학과;영남대학교 생물학과;국립공원관리공단 국립공원연구원;영남대학교 생물학과;영남대 해양과학연구센터;
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| 초 록 |
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| The variations of physico-chemical factors and the species compositions of phytoplanktons were investigated to analyze the marine ecosystem at the depths during summer in the coast of Dokdo (stations DOK 1-3). The mean values of conductivity (48.9 mS $cm^{-1}$), salinity (32.9 psu) and total suspended solids (57.9 mg $L^{-1}$) were the highest in DOK 1. The biomass (Chl-a) of phytoplanktons was the highest in the surface of DOK 1 (2.61 ${mu}gL^{-1}$). By the means of physicochemical factors (salinity, turbidity, Chl-a, TN, TP and Si), the water estimated in the coast of Dokdo was more eutrophicated than that in 2008. The phytoplanktons were a total of 42 species in Dokdo, which were composed of 33 species (78.6%) for Bacillariophyceae and 9 species (21.4%) for Dinophyceae. The standing crops of phytoplanktons were the highest ($18{ imes}10^3$ cells $L^{-1}$) in the surface of DOK 2 and in the surface of DOK 3, while they were the lowest ($2{ imes}10^3$ cells $L^{-1}$) at depth of 40 m of DOK1 and at depth of 30 m of DOK 3. The dominant species of phytoplanktons were Chaetoceros castracanei ($6{ imes}10^3$ cells $L^{-1}$) in the surface, Rhizosolenia alata f. gracillima ($3{ imes}10^3$ cells $L^{-1}$) at depth of 20 m and Protocentrum compressum ($4{ imes}10^3$ cells $L^{-1}$) at the depth of 30 m of DOK 1. At the surface of DOK 2, the dominant species was Bacillaria paxillifer ($6{ imes}10^3$ cells $L^{-1}$), while it was Hemiaulus indicus ($12{ imes}10^3$ cells $L^{-1}$) at the surface of DOK 3. The DOK 1, which is affected by upwelling, whirlpool and circulation due to the East Korean Warm Current, was the most eutrophicated water body among three stations. The monitoring of marine ecosystem in the coast of Dokdo should be continued to propose the alternatives for water quality and species conservation and to purify the eutrophicated water body due to artificial pollutants as well as natural effectors by the global warming, the climatic change, etc. |
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| 키워드 |
| phytoplanktons;species composition;water environments;Dokdo; |
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환경생물 / v.28, no.4, 2010년, pp.202-211
한국환경생물학회
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201015441599397)
언어 : 한국어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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