武汉东湖的浮游绿藻、甲藻和隐藻

1981年9月至1982年8月间,每月定期从东湖的2个采集点,共采得24号东湖标本。经鉴定有绿藻门、甲藻门、隐藻门藻类共91种(包括变种、变型),其中有1个新种,1个新变型,以及11个种,1个变种和3个变型为我国的新记录。在鉴定的这些种类中,有12种是有机质丰富的、水体中常见的种类,占整个绿藻种数的14%。一年内各个月中多次出现的种类,在有机质丰富的水体中,常见的种类就占将近半数。鼓藻种类和数量很少。优势种类主要以蓝藻为主,这些特点都说明与东湖的富营养化有密切的关系。

PHYTOPLANTONIC CHLOROPHYTA, PYRROPHYTA AND CRYPTOPHYTA FROM DONG HU(EAST LAKE), WUHAN, HUBEI PROVINCE

During the period from Sept. 1981 to Aug. 1982, phytoplankton had been collected in Dong Hu(East Lake),Wuhan,Hubei Province. 91 species,varieties and forms of the Chlorophyta, Pyrrophyta arid Cryptophyta had been noted. Among them, 1 species and 1 form are described as new a science; 11 species, 1 variety and 3 forms are recorded for the first time in China.In the species identified, 12 species are frequently encountered in the water of plentiful organic material, or 14% of the total green algae species. In every month of a year, the frequently encountered species appeared repeatedly in the water of plentiful organic material accounted for nearly 50%. The species and quantity of Desmids were very rare. Dominant species were mainly blue-green algae. These characteristics related intimately to entrophication process in Dong Hu.