CAJ | 학술논문

根据2008年8月18日至9月19日在吕宋海峡3个断面获得的0～200 m层浮游植物数据，探讨了群落结构及其与不同理化性质水团的关系。本研究共鉴定浮游植物4门61属169种（包括变种、变型和未定种），其中甲藻和硅藻物种数基本相当，各占所有物种数的50％左右；另记录了金藻门3属3种；蓝藻门1种。海区优势种为卡氏前沟藻 Amphisdinium carterae、锥状施克里普藻 Scripp-siella trochiodea、角毛藻Chaetoceros sp ．和原甲藻 Prorocentrum sp ．。丰度范围是（0.08～9.48）×106个/m3，平均为1.448×106个/m3。甲藻占总细胞丰度的74.68％；硅藻占24.96％。在水平方向，B断面和C5站浮游植物丰度较高，甲藻主要分布于远离陆地的海峡中部，而硅藻主要分布于台湾岛和吕宋岛附近；浮游植物垂直分布主要在水体的0～50 m层。聚类分析并结合水文数据表明浮游植物基本可划分为3个类群，分别受南海水、黑潮水和混合水的影响。南海水与黑潮水交汇的锋面区域，具有较周围区域更高的物种数、水柱平均丰度及硅甲藻丰度比，体现出强烈的锋面效应。
근거2008년8월18일지9월19일재려송해협3개단면획득적0～200 m층부유식물수거，탐토료군락결구급기여불동이화성질수단적관계。본연구공감정부유식물4문61속169충（포괄변충、변형화미정충），기중갑조화규조물충수기본상당，각점소유물충수적50％좌우；령기록료금조문3속3충；람조문1충。해구우세충위잡씨전구조 Amphisdinium carterae、추상시극리보조 Scripp-siella trochiodea、각모조Chaetoceros sp ．화원갑조 Prorocentrum sp ．。봉도범위시（0.08～9.48）×106개/m3，평균위1.448×106개/m3。갑조점총세포봉도적74.68％；규조점24.96％。재수평방향，B단면화C5참부유식물봉도교고，갑조주요분포우원리륙지적해협중부，이규조주요분포우태만도화려송도부근；부유식물수직분포주요재수체적0～50 m층。취류분석병결합수문수거표명부유식물기본가화분위3개류군，분별수남해수、흑조수화혼합수적영향。남해수여흑조수교회적봉면구역，구유교주위구역경고적물충수、수주평균봉도급규갑조봉도비，체현출강렬적봉면효응。
Phytoplankton were sampled in the up 200 m in the Luzon Strait from 18th August to 19th September , 2008 ,A total of 169 species belonging to 61 genera of 4 classes were identified .The species richness of dinoflagel-lates and diatoms were both closed to 50% of the total ;3 species belonging to 3 genera of Chrysophyta and 1 spe-cies of Cyanophyta were also identified .The dominant species were Amphisdinium carterae ,Scrippsiella tro-chiodea ,Chaetoceros sp .and Prorocentrum sp ..The phytoplankton abundances ranged from 0.08 × 106 to 9.48 × 106 cells/m3 ,with average value of 1.448 × 106 cells/m3 .Dinoflagellates contributed to 74.68% of the total phyto-plankton abundance and diatoms'contribution was 24.96% .The horizontal distribution showed that phytoplank-ton in section B and station C5 were with relatively high abundances ,phytoplankton were dominated by dinoflagel-lates which were mainly in the middle of the strait ,while diatoms were mainly in the vicinity of the Taiwan Island or the Luzon Island ;The horizontal distribution demonstrated that phytoplankton dramatically decreased below 50m .Combined with the hydrologic data ,Phytoplankton were clustered into 3 types of community ,which was in-fluenced by the South China Sea water ,the Kuroshio water and mixed water respectively .There were higher spe-cies richness ,water column-integrated abundances and diatoms/dinoflagellates abundance ratio at the frontal zone of the South China Sea and the Kuroshio than those at the adjacent zones ,implying significant frontal effect on phy-toplankton community structure .