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  • 1
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    An assessment of pollution in major creeks around Port Qasim (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26535 | 25017 | 2019-05-27 10:16:32 | 26535 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: Discharge of industrial and domestic wastes in sea alter the physical and chemical properties of sea water, which may affect the marine ecosystem. This study was aimed to measure the water quality of eight different creeks around Port Qasim. Samples were collected and analyzed using standard procedures during February and March,2009. The parameters including pH, Conductivity, Total Dissolved Solids, Salinity, Dissolved Oxygen, Nitrate, Phosphate, Sulphate, Chloride, Calcium, Potassium, Zinc,Iron, Cobalt, Chromium, Manganese and Cadmium were determined. The result shows that Bakran creek and Gharo-Phitti creeks are heavily polluted compared to other creeks. This study recommends that wastes from the industries or sewerage should be treated before being discharge into the creek system.
    Description: Higher Education Commission of Pakistan
    Keywords: Conservation ; Environment ; Pollution ; Creeks ; Port Qasim ; nutrients ; Gharo-Phitti ; Bakran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1-9
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  • 2
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    Diversity and seasonal variations of insects in Sandspit (backwater) mangrove forest (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26541 | 25017 | 2019-05-27 10:42:55 | 26541 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: The study deals with population diversity and seasonal variation of insectsin Sandspit mangrove forest dominated by grey mangrove Avicennia marina. In order toexamine the diversity and seasonal variations monthly data were collected fromNovember, 2007 to October, 2008. A total of 26 species of insects were recorded, mostof the species belonging to order Diptera. The highest diversity (H') 1.936 and richness(d1) 2.309 of insects were found in October while maximum value of evenness 1 wascalculated in September. The highest value of dominance (D) 0.851 was recorded inMarch. The result indicates that physical structure of mangrove vegetation facilitates thehabitation of insect fauna, canopy shade having an important function in providing coolerand wetter surface substrate at Sandspit area.
    Keywords: Biology ; Ecology ; Diversity ; seasonal variation ; insects ; Sandspit mangrove forest.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 61-66
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  • 3
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    An assessment of heavy metals in Trachinotus blochii (Lacepède, 1801) snubnose pompano fish from northern Arabian Sea (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26537 | 25017 | 2019-05-27 10:33:40 | 26537 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: A total 48 individual samples of Trachinotus blochii were collected fromKarachi fish harbor during January, 2009 to December, 2009. Six heavy metals includingZn, Cu, Cd, Ni, Pb, and Cr were determined in fish samples using Atomic AbsorptionSpectrophotometer. The metal contents ranges were Zn= 8.23-16.495 mg/kg, Cu=6.33-8.17 mg/kg, Cd= 0.705-0.84 mg/kg, Ni= 0.575-0.61 mg/kg, Pb= 0.39-0.8 mg/kg, Cr=0.1-0.49 mg/kg. The present study indicated that the concentration of two heavy metalsZn and Cr were significant however; they were in the permissible limits of FAO/WHO.
    Description: Higher Education Commission of Pakistan
    Keywords: Biology ; Fisheries ; Heavy Metals ; Trachinotus blochii ; fish harbor ; Pakistan.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 25-29
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  • 4
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    Determination of Fe, Zn, Pb and Cd in the lesser tigertooth croaker (Otolithes cuvieri Trewavas, 1974) (Sciaenidae) collected from Karachi Fish Harbor (2021)
    In:  pjms_ku@yahoo.com | http://aquaticcommons.org/id/eprint/26546 | 25017 | 2019-05-30 12:49:40 | 26546 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-07-24
    Description: In this study, Fe, Zn, Pb and Cd have been measured in muscle tissues ofOtolithes cuvieri collected from Fish Harbour West Wharf Karachi, Pakistan during theyear of 2008. The Fe concentrations in fish tissues were 6 to 88 times higher than those ofother heavy metals. Cd was the lowest in the tissues. Fe, Zn, Pb and Cd levels in ediblemuscle of O. cuvieri ranged from 15 to 54 μg Fe/g, 2.56 to 9.43 μg Zn/g, 0.13 to 0.87 μgPb/g and 0.11 to 0.92 μg Cd/g, respectively.The values obtained lower as compared tomaximum permissible limit of the food regulations and international standards and wouldnot pose any health hazards to human consumption.
    Keywords: Biology ; Fisheries ; Pollution ; Otolithes cuvieri ; heavy metals ; Karachi coasts ; Pakistan.
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 7-12
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