• C. Maheswari
• A. Muruganandam
• R. Rengarajan

A study was undertaken to record the monthly fluctuation in phytoplanktons population in Vettary estuary and Nagapattinam marine water samples south east coast of Tamil Nadu, India, for a period of August 2015 to July 2016. Four groups of phytoplankton were recorded in the samples. They are i. Diatoms, ii. Dinoflagellates, iii. Blue greens and iv. Green algae. During the study, a total of 67 species, belong to 38 families and 57 genera were recorded in respective study area. Diatoms were found to be the dominant group with 52 species. Dinoflagellates formed second dominant group with 10 species. Blue greens came next in the order with 3 species followed by green algae with 2 species in Vettar estuary and Nagapattinam marine area. With respect to population density, in station-1 the density varied from 225 to 5,450 cells/L with minimum during July-18 (premonsoon) and maximum during February-18 (post monsoon), in station-2, the population density it fluctuated between 103 and 7,346 cells/L with minimum during December-15 (monsoon) and maximum during February-16 (summer), in station-3, fluctuated from 102 to 7,961cells/L with minimum duringApril-15 (summer) and maximum during May-16 (summer) and in station-4, density of phytoplankton varied from 525 to 7.240 cells/L with minimum during March-16 (post monsoon) and maximum during January-16.

Phytoplanktons, Diversity, Marine, Estuary, Water samples

"Monthly fluctuation of phytoplanktons in Vettar estuary and Nagapattinam marine water samples South east coast of Tamil Nadu India", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.662-680, February-2019, Available :http://www.jetir.org/papers/JETIR1902884.pdf

"Monthly fluctuation of phytoplanktons in Vettar estuary and Nagapattinam marine water samples 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 2, page no. pp662-680, February-2019, Available at : http://www.jetir.org/papers/JETIR1902884.pdf