The impact of water pollution on White Nile Water quality and fisheries at Khartoum state

الموضوعات

علوم بيئية

الملخص

,A ' This study was carried out during February 2009-August 2010to investigate the impacts of sewage and industrial disposal from Elauzozabmusruf into the White Nile around Khartoum on water quality, planktoniccommunity and accumulationvlevels of Cd and Pb in fish (Orechromisniloticus). ' 'Samples-of water and plankton were taken monthly from foursites: J ebel Aulia (upstream),Al musraf, Elauzozab (disposal site), Almogran(downstream). _Samples of water -for'physical and chemical analysis, Gills offish (Orechromis nil0ticus)_~were examined for accumulation level of Cd andPb as biological indicators of water pollution.The result revealed: ‘. . ' iAt the disposal site and downstream sewage effluent increased conductivity(sss umho), TDS (492 mg/L), TSS (137 mg/L), BOD (30 mg/L), COD (56mg/L), P04-P (0.46mg/L), NO;-N (l2mg/L), Cf! (0.54mg/L), Cd= (o.s6mg/L), Pb = (0.45 mg/L) and depleted dissolved oxygen (4_mg/L).The maximum planktonic growth occurred in winter 2010whereas the minimum growth rates recorded in summer and July 2010 andalmost disappeared in autumn 2009(August to October).The pattern of abundance in phytoplankton was almostreversed, due of many diatoms replaced by blue green algae and theappearance of Euglenophyceae. In Zooplankton copepods dominated overcladocerans and Rotifers which were of less abundance .The accumulation levels of Cd and Pb in Orechromis niloticusgills confirm the presence of high significant levels of Cd (1.518 ug\g) andPb (2.l65ug\g) lthle concentration of Cd and Pb in water and fish gillsexceeds the permitted limits by WHO and Sudanese standard for drinkingwater guideline.(Cr,0.005mg/1, Cd=0.005mg/1, Pb=0.05mg/l) ._ The finding contributes to understanding of distribution anddynamics‘ of pollutants in the White Nile ecosystems

روابط وملفات

التعريف والنوع

رقم الوثيقة

f3ba0f8c-6631-48e9-a659-61caa864eab6

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل دكتوراة

نوع الملف

pdf text

أسماء الملفات

63494_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":" عبد القادر محمد أحمد منوفل","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"بشير محمد الحسن","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"حسين صالح","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

The impact of water pollution on White Nile Water quality and fisheries at Khartoum state

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

بشير محمد الحسن, حسين صالح

الإعداد

عبد القادر محمد أحمد منوفل

الاقتباسات الببليوغرافية