CAJ | 학술논문

2003年分别于8和12月对潭江下游及黄茅海入海口的浮游植物进行了调查.16个采样点不同时期的叶绿素a在0.28~37.50 mg/m3范围内变动,冬季叶绿素a的含量显著高于夏季.16个采样点共观察到浮游植物58属,71种,其中绿藻门27种,硅藻门19种,蓝藻门12种,其余为隐藻、裸藻和甲藻类.16个采样点浮游藻类3次采样的平均丰度在11.2万~69.7万个/L.硅藻丰度最高,优势种为梅尼小环藻(Cyclotella meneghiniana),湖沼圆筛藻 (Cosinodiscus lacustris),线形双菱藻(Surirella caproni);绿藻丰度居其次,优势种为栅藻(Scenedesmus spp.)等绿球藻目的种类;隐藻主要由啮噬隐藻(Cryptomonas erosa)组成;蓝藻和其他藻类丰度比较低.根据浮游植物种类组成和丰度,该调查水域属于中到富营养水平;浮游植物主要由淡水种类组成.
2003년분별우8화12월대담강하유급황모해입해구적부유식물진행료조사.16개채양점불동시기적협록소a재0.28~37.50 mg/m3범위내변동,동계협록소a적함량현저고우하계.16개채양점공관찰도부유식물58속,71충,기중록조문27충,규조문19충,람조문12충,기여위은조、라조화갑조류.16개채양점부유조류3차채양적평균봉도재11.2만~69.7만개/L.규조봉도최고,우세충위매니소배조(Cyclotella meneghiniana),호소원사조 (Cosinodiscus lacustris),선형쌍릉조(Surirella caproni);록조봉도거기차,우세충위책조(Scenedesmus spp.)등록구조목적충류;은조주요유교서은조(Cryptomonas erosa)조성;람조화기타조류봉도비교저.근거부유식물충류조성화봉도,해조사수역속우중도부영양수평;부유식물주요유담수충류조성.
Phytoplankton in Lower Reaches of Tan River and Huangmao Bay was investigated in Aug. and Dec. 2003. Chla in 16 sampling stations at different time ranged between 0.28~37.50 mg/m3, and the content is obvious higher in winter than in summer. A total of 58 genera and 71 species were observed, among which, 27 species belong to Chlorophyta, 19 species belonged to Diatom, 12 species belonged to Cyanophyta and the others were Cryptophyta, Euglenophyta, Pyrrophyta. Average phytoplankton density in 3 times sampling at 16 stations ranged between 112 thousand ind./L to 697 thousand ind./L. Diatom mainly composed of Cosinodiscus lacustris,Surirella caproni, Cyclotella meneghiniana had the highest density. Chlorophyta, mainly composed of species of Chlorococcales had the second highest density. Crytophyta was mainly composed of Cryptomonas erosa. Other phyla including Cyanophyta had very low density. According to phytoplankton species composition and density, the study water can be classified as mid-eutrophic level and the freshwater species dominated by phytoplankton community.