Morpho-edaphic Index for Estimating the Potential of fish yield of Jebel Aulia dam Reservoir (White Nile) Sudan and its Correlation to the Limnological Parameters of the Reservoir

摘要

Limnological investigations concentrated on water characteristics including temperature, dissolved oxygen, electric conductivity, transparency and pH in two sites. Morpho-edaphic Index was used for estimating the potential fish yield. The highest average of the fish potential yield in Jebel Aulia reservoir was in summer 2008 equivalent to 90.164 kg/ha/yr and that of Kosti site was in winter about 113.023 kg/ha/yr. The calculated averages for the overall potential yield for the whole year in Jebel Aulia reservoir dam average was 77.213 kg/ha/yr and Kosti site was average 94.263kg/ha/yr.