Phytoplankton diversity and seasonal variations in physico-chemical parameters of Kunigal tank, Tumkur district, Karnataka
Lalitha H M
Water is one of the most important natural resources needed for the existence and development of life on earth. The freshwater ecosystems like ponds, lakes, tanks and other small lentic ecosystems form an integral part of the biosphere and are considered as more significant in the analysis of biodiversity, limnology and global processes. It is important to know the physico-chemical and biological properties of water that determine the trophic status and contribute for the productivity of the aquatic ecosystems. Temperature regulates natural processes in aquatic ecosystem and affects biological reactions in water. pH of water is important for the biotic communities as most of the plant and animal species survive in narrow range of pH from slightly acidic to slightly alkaline condition. The quality of surface and ground water are being threatened by the anthropogenic activities such as siltation, untreated sewage fertilizers, insecticides, pesticides and industrial effluents as the runoff from surface areas. Seasonal variations in physico-chemical parameters have a significant effect on the distribution of periodicity, quantitative and qualitative composition of fresh water organisms. Phytoplanktons are the important primary producers and play a significant role in the aquatic food chain and retain the stability of the aquatic ecosystem. The production of phytoplanktons depends on pH, sunlight, some inorganic nutrients, CO2, salinity, temperature etc. In the present study, for the analysis of physico-chemical parameters and phytoplanktons, on monthly basis, the surface water samples were collected from Kunigal tank between 7 am to 9 am for a period of one year from February-2015 to January-2016. The results indicated that the physico-chemical parameters were within the permissible limit as prescribed by Indian standards of drinking water: 2012 and showed rich species diversity of phytoplanktons. The tank water is suitable for drinking, agriculture and fish culture.
Lalitha H M. Phytoplankton diversity and seasonal variations in physico-chemical parameters of Kunigal tank, Tumkur district, Karnataka. International Journal of Entomology Research, Volume 7, Issue 2, 2022, Pages 32-40