In the present study correlation analysis of marine nematodes with physiochemical parameters was conducted during 2008-2010 from seven different localities of Pakistan. These localities were Port Bin Qasim, Korangi Creek, Clifton, Sandspit, Keamari, Sonmiani and Gwadar while the parameters were pH, biochemical oxygen demand; chemical oxygen demand, oil & grease, organic matter, phenol, phosphate, total kjeldahl nitrogen, total suspended solids, turbidity, salinity and metals. The result showed that the pattern of nematode density was affected by several environmental factors. Correlation analysis of two years indicated that physio-chemical parameters had varied significant and non significant negative effect on mean nematode density at different sites.
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