Species Composition and Qualitative Distribution of Macrophytes in Intertidal and Upper Subtidal Zones of Furugel'ma Island (Peter the Great Bay,Sea of Japan)

During the summer of 1999 we studied the species composition and distribution of macrophytes in the intertidal and upper subtidal zones around Furugel'ma Island and determined the qualitative characteristics of their distribution (biomass and projective coverage) and sizes. The samples were collected along 27 hydrobotanical transects. Our analysis of the obtained data allowed us to distinguish and describe eight macrophyteassociations.     

Effect of Non-removal of the Macrophytic Biomass on the Characteristics of Water and Plant Community in Lake Naini Tal,U.P., India

In the most productive macrophytes stand lying within the littoral zone of Lake Naini Tal (a Kumaun Himalayan Lake, located 1937 m above sea level) the macrophytic biomass was removed at the time of peak biomass one year, but not during the next. The effect of non-removal of the macrophytes was apparent in the physical and chemical parameters of the water, viz: thermal stratification, pH, dissolved oxygen, calcium and nitrogen content. The removal of macrophytes increased the plant diversity. Seasonal patterns of ash, calcium and nitrogen content in plant tissues were different for the two years of study.