Zooplankton dynamics in the coastal waters of adubidri, Karnataka

Abstract

Water samples were collected from five locations selected along 5, 10 and 15 m depth contour, from February 2008 to January 2009 in the coastal waters of Padubidri near the proposed dupi Power Corporation Ltd, (UPCL). Total rainfall during the period of study was approximately 2600 mm, of that more than 82% occurred during the southwest monsoon season. Air temperature varied from 287°C to 32.6°C. Water temperature, pH, salinity, dissolved oxygen and B were in the ranges of 28°C-31.4°C; 7.8-8,4; 3 L28 ppt - 35A 1%o; 4,0 mg/1-6.5 mg/1; 0040 mg/1-4A8 mg/II respectively. 24 groups of zooplankton were recorded of which, copepods formed the dominant groups. The distribution of zooplankton showed higher abundance at 5 m depth, followed by 10 m and 15 m.