Abstract:

This paper reports the species composition,distribution,ecotypes and similarity of freshwater algae from five different habitats,i. e. in water,snow, mud sand of West Lake and red colored snow in penguin guano and snow in moss cushions around Great Wall Station. The difference is obvious in composition and abundance of algae among the habitats. Algae abundance revealed in the range of 11.04×10 3 ～ 2337.12×10 3 individuals or cells per dm 3 of the water and snow melted water or per gram of mud sand. According to habitats or the different mode of life, 50 taxa of 3 phyla in total are distinguished into two ecotypes:water algae and terrestrial (snow) algae; or freshwater planktonic algae and freshwater benthic (epiphytic) algae.