IMPACT OF WATER CIRCULATION AND DISCHARGED WASTES ON ZOOPLANKTON DYNAMICS IN THE WESTERN HARBOUR OF ALEXANDRIA, EGYPT

摘要: A /Tonthly variations of species composition and abundance -^-^-zooplankton community in the Western harbour were studied during period from April 1999 to March 2000 relation effect water circulation discharged waste waters. The results indicated significant role freshwater (39 spp.) zooplakton (11 lspp.) harbour, providing highest occurrence warm (May- October) with increase However, spatially, structure showed a more or less homogenous distribution most year, reflecting pattern harbour. Except relatively high density July (48.4x103 ind./m3), standing stock ( annual average: 26.7xl03 ind./m3) low zooplankton production Copepods tintinnids major component stock, forming 46.4% 24.8% its total counts respectively, followed by ciliates rotifers (7.5% 7.2%). as well each group seasonal variations, exception minimum maximum values, two periods different levels. diversity index values revealed higher than copepods.