Crustacean Zooplankton Was Studied In Five ponds In AL- Sinn's
Fish farm. As a one Of The Most Important components Fresh
Water Ecosystem . The samples of zooplankton were collected
During Period From November 2013 To March 2015, By One
Sampling a Month.
The samples of Crustaceans (Malacostraca) were collected in the fresh water, from
different regions of Al-Assi valley (the river, Katenah lake, the reservoirs such as Al-
Zaafaranh, Al-Sindianh and from Al-teen spring), between August 2010 and Augu
st 2011.
The samples were preserved in alcohol (70 %). After accurate inspection of the collected
samples, there were 4 species classified, two species of freshwater belonging to true crabs
were recognized by depending on the masculine organs as following: Potamon potamois
and Potamon setiger from the Potamidae family, one species of shrimps Atyaephyrra
dessmarestii-orintalis from Atyidae family, and only one species of amphipods which was
Grammars lacustris of Gammaridae family.
All examined species were described morphologically, explaining the most important
classified features that distinguish these species presented with clarifying paintings and
with the pictures for these features.
This study was conducted to determine the chemical and physical analysis of
two important water sources in the coastal erea, namely: Northern Elkabeer
river and Balloran Dam. The study took a year and a half starting from June
١٩٩٩.
The temperatu
re the cations and the anions were periodically
determined in three sites selected along the river bed.
Results showed, that there are a large variations in the concentrations of the
studied elements, in both water sources. The same variations were also
observed among the three defined sites of the same source according to the
ruling climatic factors during the year. The increase in the concentrations of
most of chemical elements in water source was observed when the temerature
increased. These concentrations generally reach the highest value in the latest
Summer and the beginning of Autumn.
It was shown that the impact of the biogeochemical factors namely: rainfall
and floods, the water drianing from soils and the effect of agricultural and in
dustrial waste - water became clear .
According to the international and Syrian standards of water chimical
qualities, the water of Balloran Dam and ١٦ Tishreen Dam can be used for
drinking and irrigation purposes. While water of the tow studied sites on the
Elkabeer river can only be used for irrigoation.
