Seasonal abundance of Rotifera in a warm monomictic lake

Abstract

The communication describes the distribution of rotifer in Lake Manasbal, Kashmir, in relation to some physical and chemical characteristics of water. The lake is warm monomictic type and  remains stratified for eight to nine months. Water is alkaline which is mostly due to the presence of bicarbonates of Ca++ and Mg++. Thirty-eight species of rotifer were recorded in the lake during the present investigations. The effects of temperature, transparency, carbonate and bicarbonate concentrations and the content of dissolved oxygen and free CO2 on the population density of the group have been discussed in the paper.