ORCID Profile
0000-0002-2278-6441
Current Organisations
Damietta University
,
Mansoura University Faculty of Science - Damietta Branch
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Publisher: Walter de Gruyter GmbH
Date: 12-2018
Abstract: The objective of this study is to reveal the spatial and temporal variations of surface water quality in this part of the River Nile with respect to heavy metals pioneerution. Seventeen parameters in total were monitored at seven sites on a monthly basis from October 2013 to September 2014. The dataset was treated using the tools of univariate and multivariate statistical analyses. Cluster analysis showed three different groups of similarity between the s ling sites reflecting the variability in physicochemical characteristics and pollution levels of the study area. Six PCs factors were identified as responsible for the data structure explaining 91 % of the total variance. These were eutrophication factor (23.2 %), physicochemical factor (20.6 %), nutrients (16.3 %) and three additional factors, affected by alkalinity and heavy metals, recorded variance less than 15 % each. Also, the heavy metals pollution index ( HPI ) revealed that most of the calculated values were below the critical index limit of 100. However, two higher values (124.89 and 133.11) were calculated at sites V and VI during summer due to the temperature and increased run-off in the river system.
Publisher: Elsevier BV
Date: 11-2021
Publisher: Institute of Oceanography and Fisheries
Date: 22-12-2017
DOI: 10.32582/AA.58.2.5
Abstract: The spatial pattern of zooplankton communities at Damietta coast, southeastern Mediterranean was studied to assess the impact of human activities on the abundance and community structure. Twenty-five stations from five different stressed sites were s led in June-July 2014. Thirty-four zooplankton taxa were recorded, in addition to the larvae of copepods and meroplankton. Copepoda was the most abundant group among which, Oithona nana, Euterpina acutifrons, and Parvocalanus cirrostratus were the most frequent. The calanoid copepod Pseudodiaptomus trihamatus is a new record for the Mediterranean Sea that may have been introduced via ballast water. Multivariate/Univariate analyses demonstrated that 1) the environmental variables and zooplankton communities represented significant differences among five sites 2) the spatial variations of community structure were undoubtedly due to land-based effluents and 3) among all environmental variables, salinity and phytoplankton biomass had the major determining effects on the spatial patterns of zooplankton categories. The results indicates that not only the discharged water makes the Damietta coast at risk, but also the ballast water is not less dangerous. Hence, we emphasize the need for activation of the ballast water management to reduce the risk of future species invasions.
Publisher: Elsevier BV
Date: 08-2013
DOI: 10.5697/OC.55-3.733
Publisher: Egypts Presidential Specialized Council for Education and Scientific Research
Date: 15-05-2019
Publisher: Springer Science and Business Media LLC
Date: 15-02-2021
Publisher: Egypts Presidential Specialized Council for Education and Scientific Research
Date: 13-07-2019
Publisher: ResearchersLinks Ltd
Date: 08-2018
Publisher: Egypts Presidential Specialized Council for Education and Scientific Research
Date: 12-2019
Location: Egypt
No related grants have been discovered for Wael Mostafa.