CAJ | 학술논문

根据2006年2月19日～3月5日在长江口及其邻近水域进行的大面调查所获样品,报道了该水域浮游植物的群落特征.此次调查共发现浮游植物5门56属116种(包括未定名17种).调查水域浮游植物群落以硅藻为主,其次为甲藻,此外还有少量的金藻、蓝藻和绿藻.主要优势种为具槽帕拉藻Paralia sulcata、离心列海链藻Thalassiosira excentricus、圆海链藻Thalassiosira rotula和辐射圆筛藻Coscinodiscus radiatus.调查区浮游植物的细胞丰度介于(111.11～2315.56)×104 /m3,平均值为914.87 ×104 /m3.近岸和调查区的东北部表层浮游植物丰度较高,其他区域表层丰度较低.浮游植物的垂直分布特征是细胞丰度的最大值出现在表层以下,随深度的增加,浮游植物的细胞丰度先上升后下降.多样性分析表明,香农-威纳多样性指数和Pielou均匀度指数在近岸口门处较高,离岸水域较低.
근거2006년2월19일～3월5일재장강구급기린근수역진행적대면조사소획양품,보도료해수역부유식물적군락특정.차차조사공발현부유식물5문56속116충(포괄미정명17충).조사수역부유식물군락이규조위주,기차위갑조,차외환유소량적금조、람조화록조.주요우세충위구조파랍조Paralia sulcata、리심렬해련조Thalassiosira excentricus、원해련조Thalassiosira rotula화복사원사조Coscinodiscus radiatus.조사구부유식물적세포봉도개우(111.11～2315.56)×104 /m3,평균치위914.87 ×104 /m3.근안화조사구적동북부표층부유식물봉도교고,기타구역표층봉도교저.부유식물적수직분포특정시세포봉도적최대치출현재표층이하,수심도적증가,부유식물적세포봉도선상승후하강.다양성분석표명,향농-위납다양성지수화Pielou균균도지수재근안구문처교고,리안수역교저.
The water samples of phytoplankton were selected from the grid survey around the Changjiang Estuary and adjacent waters from 19th Feb. to 5th Mar. 2006. The phytoplankton commuinity and its structure were reported in this paper. A total of 116 taxa (including 17 uncertain species) belonging to 56 genera of 5 phyla were identified. The main phytoplankton group was diatom and the second was dinoflagellate. There were also a few species belonging to Chrysophyceae, Chlorophyceae and Cyanophyceae.The dominant species were Paralia sulcata, Thalassiosira excentricus, Thalassiosira rotula and Coscinodiscus radiatus. The cell abundance of phytoplankton ranged from 111.11 to 2315.56 104/m3 and the average was 914.87×104 /m3.The average cell abundance of phytoplankton in surface water was relatively high in the inshore area and northeast in the survey area. The vertical distribution of phytoplankton showed that the maximum cell abundance was found in subsurface water,and along with the increase of the depth cell abundance firstly was increased then decreased. According to the study on the diversity of phytoplankton community, the Shannon-Weaver diversity index and Pielou evenness index were high in the river mouth and low offshore.