الفهرس 
Introduction
Hydrogen ion concentrationOnly 14 pages are availabe for public view
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Abstract
The present study evaluates the evaluation of some pollutants in the Eastern Delta coast and its influence on the marine environment, throughout the period from summer 2002 to spring 2003, also it determines the abundance of zooplankton in water and the biodiversity in sediments. Seven sites were selected to represent the locations of Eastern Delta coast. The study included the physico chemical characteristics in water, sediment, also, determination of pb, cd, cu. And zn in water, sediment and some organs of selected species of fishes inhabiting these sites. Also the study determine the biodiversity in the study sites. The mean dissolved oxygen (DO) concentration was 5.8 (R+ (B0.18 mg/l. The mean nitrate concentration was 2.28 (R+(B0.1 mg/l. the average concentration of pb, cd, cu and zn were 0.004 (R+(B0.01 (R+ (B0.005, 0.014 (R+ (B0.006 and 4.22 (R+ (B0.547 mg/l, respectively. the average concentration of pb, cd, cu and zn in sediment were 6.49 (R+(B0.434, 2.10 (R+ (B0.114, 7.01 (R+ (B0.142 and 25.28 (R+ (B0.63 mg/kg, dry wt, respectively. The average values of pb in muscles, gills and liver of mugil cephalus were 1.66 (R+ (B0.06. 1.07 (R+ (B0.05 and 3.09 (R+ (B0.2 (So?(Bg wet wt, respectively The average values of cd in muscles, gills and liver of mugil cephalus were 0.4 (R+ (B0.022, 0.5 (R+ (B0.066 and 0.6 (R+ (B0.05 (So?(Bg wet wt, respectively The average values of cu in muscles, gills and liver of mugil cephalus were 1.3 (R+ (B0.04, 3.71 (R+ (B0.4 and 38.58 (R+ (B8.53 (So?(Bg wet wt, respectively The average values of zn in muscles, gills and liver of mugil cephalus were 38.9 (R+ (B1.6, 44.7 (R+ (B1.28 and 90.14 (R+ (B7.1 (So?(Bg wet wt, respectively The highest biodiversity recorded at spring and winter.