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Journal of Biological Sciences

Year: 2002 | Volume: 2 | Issue: 4 | Page No.: 217-219
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Research Article

Seasonal Limnological Variation in Rakh Branch Canal, Samundri Road, Faisalabad

Shahid Mahboob and Muhammad Zahid

ABSTRACT

The seasonal variations of Rakh Branch canal were studied. Air and water temperature varied from 17-43 and 15-410C, respectively. The other variables were varied as light penetration 16-29 cm, pH 7.8-8.5, electrical conductivity 0.15-1.4 dsm‾1, dissolved oxygen 1.9-3.4, total alkalinity 237-290, carbonates 46-80, bicarbonates 189-210, total hardness 167-237, calcium 31-44, magnesium 17-37, sodium 14-25, potassium 1.6-5.4, phosphates 0.0-0.103, nitrates 0.43-3.46, total solids 925-1178 and total dissolved solids 796-983 mg l‾1 . Productivity based on dry weight of planktonic biomass was ranged from 111-229 mg l‾1. The total twenty two genera of phytoplankton and zooplankton were recorded which varied significantly during different periods of the study because of season.
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