تأثير بعض العوامل البيئية على بيئة وتوزيع النباتات المائية في هور الجبايش

الملخص EN

This study aimed to identify some physical and Chemical environmental factors and its impact on the abundance and distribution of aquatic plants to three stations selected of Al-Ghibaish Marsh (Abo- Sobat, Al-Sabbaghia and Al-Baghdadia.

The samples of water and plant were collected from January- June 2018 for six months, as estimated both water temperature, electrical conductivity and depth of water as physical variables and dissolved oxygen, pH, and reactive nitrates and phosphates concentration as chemicals variables to water samples, as well as estimated percentage of biomass of the vegetation, the frequency and the associated aquatic plants.

The results of study showed that high water temperature in summer months and decrease in winter, as it recorded the highest temperature (32.4) °C in August at Al-Baghdadia station.

The highest value of electrical conductivity was recorded in Al-Bagghdia station during August (14.31) mS/ cm, Abo-Sobat station recorded the highest depth of water column during February and lower during August in Al-Baghdadia station.

The values of dissolved oxygen located within acceptable limits for all stations.

The amount of nitrate the water samples was estimated and showed the high value in Al-Bagdadia station up to (5.13) mg/L in August, while the lower values recorded in Al-sabagia station in April.

Also, the highest value of the reactive phosphate of water samples was recorded in Al-Sabagia station during August and lower values during February in Al-Baghdadia station.

Also, overall productivity of biomass was estimated for four aquatic plant, the results showed that Ceratophyllum demarsum, characterized high biomass for all seasons of the year at the study station compared with other aquatic plants.