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The Physico-chemical, plankton (Phyto and Zooplankton) and biological characteristics of Safari park lake (SPL) and Quaid-e-Azam
park lake (QPL) provided indirect clue of water quality of recent pollution after analyzing various parameters. It was recorded that the
levels of turbidity was relatively high at QPL (216.17 166.54 NTU) but the other physical parameter (Temperature and pH)
approximately uniform. Seasonal occurrence of biological communities were significantly higher in SPL than QPL (phytoplankton
density, 1298.17945.862 U/L; zooplankton density, 112.6680.864 U/L and macro-invertebrates, 726.58109.203 U/L). The
presence of Nephthys oligobranchia, Chaetogaster sp., Viviparous bengenlsis and Physa fontinalis clearly reflect the low pollution at
SPL. Tubifex tubifex and Limnodrillus sp. are well known for organic pollution indicator. In view of the occurrence of these organisms
in QPL water (1 each in number) may be concluded that there was little bit high organic pollution. The monitoring of biological
communities can easily indicate the response of any chemical and biological changes by the anthropogenic activities. Periodical
assessment of water and soil should be carried out to maintain and develop pleasant environment in our recreational lakes.
Mohammad Shoaib. (2006) STUDY OF ANTHROPOGENIC INFLUENCED RECREATIONAL LAKES OF KARACHI-PAKISTAN WITH SPECIAL EMPHASIS ON SEASONAL CHANGES IN BIOLOGICAL COMMUNITIES, , Volume 3, Issue 1.
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