A survey was carried out from February 2014 to March 2016. Water samples were collected in a monthly interval. . Biodiversity indices like Shannon?s diversity index, Pielou?s evenness index, Simpson?s dominance index and Margalef?s species richness index were calculated. A total of 16 zooplankton genera were recorded composed of Protozoa with 4 genera, Rotifer with 5 genera, Cladocera with 4 genera and copepod with 3 genera from the river Torsa. Rotifer was most dominant group (31%) and copepod was least dominant group(19%). Density (org./L), number of organism (S), species diversity index(H?) and Margalef?s species richness Index (R) of zooplankton were recorded maximum in winter season and minimum in monsoon season at all sites.
Zooplankton, River Torsa, Organism, Margalef's species, Biodiversity
Tapan Sarkar , Joydeb Pal "Diversity And Distribution Pattern Of Zooplankton Of River Torsa, West Bengal" Iconic Research And Engineering Journals Volume 1 Issue 7 2018 Page 42-45
Tapan Sarkar , Joydeb Pal "Diversity And Distribution Pattern Of Zooplankton Of River Torsa, West Bengal" Iconic Research And Engineering Journals, 1(7)