Study and Distribution of Phytoplankton in Langer House Lake in Greater Hyderabad, Telangana State, India.

Abstract

The present study aimed to evaluate the biodiversity, distribution, and seasonal variation of phytoplankton in Langer House Lake, located in Greater Hyderabad, Telangana State. Sampling was conducted at three different stations across the study site over a two-year period, from May 2006 to April 2008. The results revealed a dominance of Cyanophyceae, accounted 51.3% of the total phytoplankton population which included 12 genera and 35 species. Chlorophyceae with 30% represented by 20 genera and 34 species, followed by Euglenophyceae with 14.5% represented by 4 genera, 16 species and Bacillariophyceae with 5% including 11 genera, 21 species. Thus, Cyanophyceae emerged as the most dominant group, followed by Chlorophyceae, Euglenophyceae, and Bacillariophyceae. Among the Cyanophyceae, genera such as Oscillatoria, Merismopedia, Chroococcus, and Microcystis were predominant. In the Chlorophyceae group, Scenedesmus, Pediastrum, and Tetraedron were frequently observed. Euglena, Phacus, and Trachelomonas were dominant within Euglenophyceae, while Gomphonema, Navicula, Nitzschia, and Cymbella were the key representatives of Bacillariophyceae. These genera were consistently present throughout the study period.