Algal diversity and physio chemical qualities of achankovil river in monsoon seasons

Present research focuses the exploration of the biodiversity of micro and macro algae ofAchankovil river during monsoon seasons. The, water samples were collected during pre-monsoon, monsoon and post-monsoon seasons. Samples were collected from the upstream, downstream and midstream regions of the river. The results showed that seventy three types of algae belongs to four major algal class such as Chlorophyceae, Bacillariophyceae, Cyanophyceae and Euglenophyceae were recorded. The algal types include twenty eight Chlorophycian, twenty six Bacillariophycian classes, the remaining sixteen genera belongs to Cyanophyceae and three Euglenophyceae classes. The physio chemical parameters such as temperature, pH, dissolved oxygen and CO₂ content were indicated at optimum values. Nitrate, phosphate and silicate shows variation from the river water ranges. The presence of species such as Euglena, Scenedesmus, Navicula and Nitzschia indicates the river water is polluted.