Do you want to publish a course? Click here

Contribution to Taxonomical Study of (Crustacea- Malacostraca) From Some water bodies of Al-Assi Valley

مساهمة في الدراسة التصنيفية للقشريات لينات الدرقة Malacostraca في بعض الأوساط المائية في حوض العاصي

1654   0   39   0 ( 0 )
 Publication date 2013
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

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 August 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.



References used
AL-ADHUB,H.Y.A. On subspecies of a fresh water shrimp (decopoda ,Atyidae) from the shatt ALarab river,Iraq, crustacean 53(1) 1987:1-4
ANNANDELE ,N.,KEMP,S.The crustacean decapoda of the lake of Tiberias. Journal de la societe asiatique,Bengal, 9: 1913. 241-258
BARROIS,T. contribution a létude de quelqucs lacs de Syrie.Revue Biologique du Nord de la france.6: 1894.224-312
rate research

Read More

Vulnerability assessment of freshwater resources in the Orontes basin was estimated in the provinces of Homs, Hama and Idlib to better understand the current situation of water under the prevailing conditions and to identify the most prominent fac tors that influence water susceptibility to environmental changes. This study helps decision-makers in evaluating and modify existing policies and implementing suitable measures to improve water resource management.
This study aims to define bird species that use artificial lakes in Syrian coast, and evaluate their population size for management and protection of wildlife. Four different sites were chosen in Syrian coast, which considered the most important ar tificial lakes. Point counts method was used in bird survey in November, December, January, February, March in 2011. 15 waterbird species were recorded belonging to 9 family and 6 order. Wading birds were the main component of waterbird (60% of all species) in Syrian coast. Populations size was 1 to 300 individuals. Diversity of birds and their Populations were greatest in sites which are rich in food ( especially fish). The results showed a difference in composition of bird communities in studied sites.
This study was carried out for three years (٣-٥ months every year) during maximum of aquatic hyphomycetes distribution ( in - Autumn and Winter), which related with the period of leaves-fall. We studied ٩٠ water samples taken from Banias River. We identified ٧٠ species of aquatic hyphomycetes by investigtion ٨٢٨ spore - isolates taken from water samples. The factors responsible for the occurrence of different patterns of their distribution have been determined. Therefore, this work is done for the first time in Syria and given an important side of ecological and botanical diversity in the waters of our country.
studied the elimination of lead using natural zeolite by studding the the best conditions to removal lead in a system with two phase: liquid (contaminated water with lead)-solid (natural zeolite), correlation of the following factors: time of mixin g phase, granular size of solid phase, change of pH values, concentration of the calcium element as a competitor element for the available sites for occupation on the solid phase, the ratio V/m represents the size of the aqueous phase to the mass of the solid phase and concentration of lead element. On the other hand, the possibility of using natural zeolite as a template for storaging dangerous materials such as lead, has been studied by changing water quality, pH and temperature. The results of this research show that and under the following experimental conditions: time of mixing=4hour, mix of granular size of solid phase, pH< 8, concentration of calcium = 20 ppm,V/m=100 and concentration of lead = 1000 ppm , the rate of lead removal range from 60% to 99%. On the other hand, the results of this research show that changing water quality has no impact on the ability of natural zeolite for storaging lead as a hazardous waste, while pH changes have minor effects on this ability of retention and an effect for the high temperatures on the template was also observed.
Since the beginning of the twentieth century, researchers have isolated and dentified spreaded and adapted yeasts to variow environmental conditions and the types of the mediums in which they graw. The industrial features of the isolated genera, e specially those used in the food processing and the stability of their genetic characteristics were studied. Yeasts in medical and industrial fields were also improved.
comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا