Effects of Environmental Pollutants on Aquatic Vertebrate Biodiversity and Inventory of Hub Dam: Ramsar Site
SENRA Academic Publishers, Burnaby, British Columbia 1 Vol. 6, No. 2, pp. 1913-1935, June 2012 Online ISSN: 1920-3853; Print ISSN: 1715-9997 EFFECTS OF ENVIRONMENTAL POLLUTANTS ON AQUATIC VERTEBRATE BIODIVERSITY AND INVENTORY OF HUB DAM: RAMSAR SITE *M Zaheer Khan1, Abeda Begum1, Syed Ali Ghalib1, Abdur Razzaq Khan1, Rehana Yasmeen1, Tanveer Fatima Siddiqui2, Afsheen Zehra1, Darakhshan Abbas1, Fouzia Tabassum1, Saima Siddiqui2, Tanveer Jabeen1 and Babar Hussain1 1Department of Zoology, Faculty of Science, University of Karachi, Karachi-75270 2Department of Zoology, Federal Govt Urdu University of Arts, Science and Technology, Karachi. ABSTRACT In the present study, the effects of environmental pollution on aquatic vertebrate biodiversity were studied and inventory of vertebrate fauna of Hub Dam was prepared. The water samples taken from four sampling sites from the study areas viz. Main Dam, Spill way, Hub Canal and shallow water area were analyzed for physico-chemical parameters viz temperature in air, temperature in water, color, pH, TDS, COD, BOD, alkalinity, salinity, conductivity, hardness, Phosphate, Nitrate, Bicarbonates, Sulphate, Chloride, Carbon dioxide, Dissolved Oxygen, Turbidity and Fluoride, Cations (Ca+, Na+, Mg+, K+ ) and some selected heavy metals (Cr, Fe, Ni, Cu, Zn, As, Cd, Pb, and Hg). The seasonal and yearly variations in selected physico chemical parameters and trace metals were determined with respect to the amount of annual rainfall and contamination factors involved. During the study, no adverse effects of environmental pollution were found on the aquatic biodiversity except for some minor toxic effects due to trace metals in water. All the physico – chemical parameters’ values were observed as per limits of World Health Organization standard.
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