Seasonal Variation And Diversity Of Fresh Water Microalgae And Cyanobacteria Form Gomuki Dam, Kallakurichi, Tamil Nadu – India

Abstract

Algae are distributed worldwide in the sea, in freshwater and also in wastewater. Most are microscopic, but some are quite large. In
the study the samples were collected from fresh water, moist soils and stone scrapings etc., totally 40 samples were collected in the
different seasons from in Gomuki dam located in Villupuram, origin from Kalvarayan hills, Eastern Ghats range
Latitude: 11°46'41.21"and Longitude: 78°49'49.88. The samples were screened for the presence of microalgae by plating on BG11
,
BBM and AC medium. The isolates were further identified based on their morphological characteristics. Among the 40 samples 53
genera and 127 species of various microalgae were identified among that 34 species belong to Bacillariophyceae, 30 species belong
to Cyanophyceae, 25 species belong to Chlorophyceae, 12 species belong to Zygnematophyceae, 06 species belong to
Conjugatophyceae, 06 species belong to Trebouxiophyceae, 05 species belong to Euglenophyceae, 05 species belong to
Mediophyceae, 02 species belong to Coscinodiscophyceae, 01 species belong to Charophyceae, 01 belong to Ulvophyceae families
are observed under the microscope. During summer seasons the predominant algal group following that Zygnematophyceae and
cyanophyceae was isolated. During rainy seasons the Coscinodiscophyceae were predominant group. During winter most of algae
family is less due to climatic changes. The growths are noted under favorable condition for the algal growth. It is the first inclusive
taxonomical and diversity study in Gomuki dam and rich of algal species were present also further investigations were needed.