• PRIYA, N
• VENKATESAN, G
• MURUGANANDAM, A

Abstract: A study was undertaken to record the Cyanobacteria at Kodiakarai coast and mangrove in Nagapattinam district south east coast Tamil Nadu India, for a period of two years (July 2017 to June 2019). Cyanobacteria contribute to carbon and nitrogen fixation and their cells act as phosphorus storages in ecosystems with extreme or oligotrophic environmental conditions such as those found in mangroves. As the high plant productivity in mangroves is only possible due to interactions with microorganisms, cyanobacteria may contribute to these ecosystems by providing fixed nitrogen, carbon, and herbivory defense molecules, xenobiotic biosorption and bioremediation, and secreting plant growth promoting substances. Some mangrove cyanobacteria were also found in association to algae or seagrasses. Few studies on mangrove cyanobacteria are available, but together they have reported a substantial number of species in these ecosystems. However, the cyanobacterial diversity in this biome has been traditionally underestimated. Though mangrove communities generally host cyanobacterial taxa commonly found in marine environments, unique microhabitats found in mangroves potentially harbor several undescribed cyanobacterial taxa. The relevance of cyanobacteria for mangrove conservation is highlighted in their use for the recovery of degraded coast and mangroves as biostimulants or in bioremediation. In this study, Out of the 38 species of cyanobacteria was recorded from the study areas. Comparatively identified cyanobacteria species are more in mangrove and less in marine environment.

Index Terms: Cyanobacteria, Diversity, Water samples, Mangrove, Coast.

"BIO-DIVERSITY OF CYANOBACTERIA AT KODIAKKARAI COAST AND MANGROVE IN SOUTH EAST COAST OF TAMIL NADU, INDIA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.162-170, June-2019, Available :http://www.jetir.org/papers/JETIR1906459.pdf

"BIO-DIVERSITY OF CYANOBACTERIA AT KODIAKKARAI COAST AND MANGROVE IN SOUTH EAST COAST OF TAMIL NADU, INDIA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp162-170, June-2019, Available at : http://www.jetir.org/papers/JETIR1906459.pdf