三岔湖浮游植物四季群落结构变化

2008年5月—2009年4月对三岔湖浮游植物群落结构进行调查的结果显示,浮游植物有8门78属299种,浮游生物群落结构、优势种和密度有明显的季节变化。春末和夏季蓝藻占绝对优势,冬季和初春硅藻和绿藻占优势。浮游植物优势种有梅尼小环藻(Cyclotella meneghiniana)、尖针杆藻(Synedra acus Kutzing)、小舟形藻(Naviculaminima)、细小平裂藻(M erism opdeia minima)、湖泊鞘丝藻(Lyngbya lim netia)等。浮游植物优势种群和密度显示,湖区的水体已进入富营养状态。

The Relationship of Community Structure in Three Forks Lake

The phytoplankton community structures of the Three Forks Lake were surveyed from May, 2008 to April, 2009. The results showed there were 8 phylum, 78 genera, and 299 species of phytoplankton. The plankton community structure, density and dominant species were seasonal variation significantly. Cyanobacteria take absolute advantage in late spring and summer, diatoms and green algae dominant in winter and early spring. Dominant species of phytoplankton including Cyclotella meneghiniana, Synedra acus Kutzing, Naviculaminima, Merism opdeia minima, Lyngbya lim netia and so on. Phytoplankton dominant species and density show that the water has entered the lake eutrophication.