CAJ | 학술논문

于2011年2～12月，在南黄海辐射沙脊群海域设置6个采样站位，每逢双月份调查1次，研究该海域浮游植物密度及优势种的时空变化．调查共获得浮游植物87种，以硅藻种类最多．浮游植物密度呈周年双峰变化，分别在4月和8月成峰，4月峰值最大，水样浮游植物平均密度为1．59×104 cells/dm3，网样浮游植物平均密度为2．71×106 cells/m3，8月峰次之，水样浮游植物的平均密度为1．28×104 cells/dm3，网样浮游植物平均密度为7．38×105 cells/m3；浮游植物密度在2月和4月，北高南低，6月和8月中部高，外围较低，10月和12月南部高北部低．2月和4月，中肋骨条藻（Skele-tonema costatum）为第一优势种，6月和12月虹彩圆筛藻（Coscinodiscus oculus-iridis）为第一优势种，8～10月琼氏圆筛藻（Coscinodiscus jonesianus）为第一优势种，枯水期（2月）铁氏束毛藻（Trichodes-mium thiebautii）在局部海域形成优势．
우2011년2～12월，재남황해복사사척군해역설치6개채양참위，매봉쌍월빈조사1차，연구해해역부유식물밀도급우세충적시공변화．조사공획득부유식물87충，이규조충류최다．부유식물밀도정주년쌍봉변화，분별재4월화8월성봉，4월봉치최대，수양부유식물평균밀도위1．59×104 cells/dm3，망양부유식물평균밀도위2．71×106 cells/m3，8월봉차지，수양부유식물적평균밀도위1．28×104 cells/dm3，망양부유식물평균밀도위7．38×105 cells/m3；부유식물밀도재2월화4월，북고남저，6월화8월중부고，외위교저，10월화12월남부고북부저．2월화4월，중륵골조조（Skele-tonema costatum）위제일우세충，6월화12월홍채원사조（Coscinodiscus oculus-iridis）위제일우세충，8～10월경씨원사조（Coscinodiscus jonesianus）위제일우세충，고수기（2월）철씨속모조（Trichodes-mium thiebautii）재국부해역형성우세．
From February to December 2011,a total of 36 net samples and 36 water samples of phytoplankton were collected at 6 stations in seawater of radial sand ridges of the South Yellow Sea once every 2 months.As a result,a total of 87 taxa were identified.There were 2 peaks of phytoplankton abundance occurred in one year.The most phy-toplankton abundance occurred in April(1.59 ×104 cells/dm3 by water samples and 2.71 ×106 cells/m3 by net samples)and the second peak in August(1.28 ×104 cells/dm3 by water samples and 7.38 ×105 cells/m3 by net samples).Phytoplankton abundance in northern seawater was higher than that in southern seawater in February and April.They were higher in center areas in June and August while they were higher in southern seawater than north-ern seawater in October and December.Skeletonema costatum in February and April,Coscinodiscus oculus-iridis in June and December and Coscinodiscus jonesianus from August to October were the most dominant species,respec-tively.Trichodesmium thiebautii was the most dominant specie at limited stations in dry season(February).