Seasons Months 2010 2011 Station I Station II Station I Station II Post monsoon January 50,980 50,195 50,290 50,315 February 60,890 60,610 60,520 60,490 March 70,639 70,410 70,390 70,410 Summer April 78,191 78,210 78,119 78,290 May 80,380 80,399 80,400 80,490 June 80,890 80,630 80,730 80,691 Pre monsoon July 41,150 41,610 41,992 41,680 August 32,690 32,715 32,638 32,415 September 31,198 31,215 31,128 31,125 Monsoon October 29,630 29,515 29,390 29,398 November 27,615 27,390 27,615 27,415 December 23,150 23,197 23,397 23,210

Table 2: Monthly variations of zooplankton population density (org/l) from January 2010 to December 2011.