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  1. Artikel ; Online: Geospatial model for allocating favorable plots for groundwater-dependent cultivation activities in Egypt

    Shalby, Ahmed / Emara, Sobhy R. / Metwally, Mohammed I. / Negm, Abdelazim M. / Gado, Tamer A. / Armanuos, Asaad M.

    National Authority of Remote Sensing & Space Science The Egyptian Journal of Remote Sensing and Space Sciences. 2023 Dec., v. 26, no. 3 p.777-788

    2023  

    Abstract: Moving towards horizontal expansion in the vast barren lands to alleviate overpopulation along the Nile River is imperative to Egypt’s 2030 sustainable development strategy. Accordingly, a mega reclamation project was advocated with a key goal of ... ...

    Abstract Moving towards horizontal expansion in the vast barren lands to alleviate overpopulation along the Nile River is imperative to Egypt’s 2030 sustainable development strategy. Accordingly, a mega reclamation project was advocated with a key goal of achieving food self-sufficiency. Solar-powered groundwater pumping system was adopted as the main water supply. Planning efforts are therefore inevitable to help locate the most favourable sites for such extensive cultivation activities. Herein, a multicriteria decision analysis was conducted to facilitate the zoning of potential rural communities across the northern portions of the Western Desert of Egypt. For this purpose, data of groundwater exploration, soil characterization, terrestrial accessibility, insolation intensity, and terrain information were fused to produce a high-resolution suitability map. The analytical hierarchy process approach was adopted to set the weighted importance of adopted criteria. The study area was categorized into Best, Good, Moderate, Fair, Poor, and Restricted classes at 1.7%, 13%, 42.6%, 26%, 10%, and 3%, respectively, of the entire region, while the constrained plots were masked out. The implemented and proposed wells fields within the underway national rural development project extend over agriculturally suitable pixels affirming the validity of the developed geospatial model. About 1.5 million ha, representing 7.2% of the undeveloped area, were found to be highly suitable for future expansion of agribusiness activities. The generated priority map will assist the decision-makers in the planning procedures for ongoing reclamation activities throughout Egypt.
    Schlagwörter agribusiness ; development projects ; groundwater ; landscapes ; models ; multi-criteria decision making ; population growth ; rural development ; soil ; solar radiation ; sustainable development ; water supply ; Egypt ; Nile River ; Land suitability ; Multicriteria decision analysis ; Agribusiness activities
    Sprache Englisch
    Erscheinungsverlauf 2023-12
    Umfang p. 777-788.
    Erscheinungsort Elsevier B.V.
    Dokumenttyp Artikel ; Online
    ISSN 1110-9823
    DOI 10.1016/j.ejrs.2023.07.014
    Datenquelle NAL Katalog (AGRICOLA)

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  2. Artikel: Assessment of climate change impacts on water quality parameters of Lake Burullus, Egypt

    Shalby, Ahmed / Elshemy, Mohamed / Zeidan, Bakenaz A

    Environmental science and pollution research international. 2020 Sept., v. 27, no. 26

    2020  

    Abstract: Egyptian Mediterranean coast hosts five shallow lagoons which play a vital role in the national economy. Lake Burullus is the second largest one that is located in the Nile Delta and is connected to the Mediterranean by a narrow outlet. This lagoon faces ...

    Abstract Egyptian Mediterranean coast hosts five shallow lagoons which play a vital role in the national economy. Lake Burullus is the second largest one that is located in the Nile Delta and is connected to the Mediterranean by a narrow outlet. This lagoon faces various anthropogenic-induced implications that threat its ecosystem and biodiversity. The prime objective of this study is investigating the impacts of future climate change (CC) on its characteristics. A 2-D hydro-ecological modeling for the lagoon was implemented, using MIKE21FM. The proposed model was calibrated and validated against the collected water quality records, for two successive years (2011–2013), at twelve monitoring stations throughout the lagoon. The simulations were executed for various parameters, including water depth, salinity, DO, BOD, and nutrient components. Six simulations from different regional climate models (RCMs) were obtained and examined to extract the most accurate climatic projections for the lagoon coordinates. These climatic estimates cover three Representative Concentration Pathways (RCPs) scenarios according to the IPCC’s Fifth Assessment Report (AR5). A moderate sea level rise (SLR), locally projected offshore from the Nile Delta coast, was obtained. The validated model was forced with the climatic and SLR projections of 2 years representing the mid and long-term future of the twenty-first century. The model results showed that the developed model is an efficient tool to simulate the lagoon characteristics. The results of the modified model showed that CC has the potential to radically alter the physical and chemical structure of Lake Burullus. The results emphasized that the lagoon is expected to be warmer and more saline. The risk of oxygen depletion is firmly predictable with significant spatial differences of DO decreasing. A prolonged residence time is expected, accompanied by an increasing trend of phosphate and chlorophyll-a and a decreasing trend of nitrate. CC impacts on Lake Burullus should be considered in its urgently required management plan.
    Schlagwörter biodiversity ; chemical structure ; chlorophyll ; climate ; climate change ; coasts ; ecosystems ; lakes ; model validation ; nitrates ; oxygen ; phosphates ; research ; risk ; river deltas ; salinity ; sea level ; water quality ; Egypt ; Mediterranean region
    Sprache Englisch
    Erscheinungsverlauf 2020-09
    Umfang p. 32157-32178.
    Erscheinungsort Springer Berlin Heidelberg
    Dokumenttyp Artikel
    Anmerkung NAL-AP-2-clean
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-019-06105-x
    Datenquelle NAL Katalog (AGRICOLA)

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  3. Artikel ; Online: Satellite-based estimates of groundwater storage depletion over Egypt.

    Shalby, Ahmed / Emara, Sobhy R / Metwally, Mohammed I / Armanuos, Asaad M / El-Agha, Doaa E / Negm, Abdelazim M / Gado, Tamer A

    Environmental monitoring and assessment

    2023  Band 195, Heft 5, Seite(n) 594

    Abstract: An arid climate accompanied by a freshwater shortage plagued Egypt. It has resorted to groundwater reserves to meet the increasing water demands. Fossil aquifers were lately adopted as the sole water source to provide the irrigation water requirements of ...

    Abstract An arid climate accompanied by a freshwater shortage plagued Egypt. It has resorted to groundwater reserves to meet the increasing water demands. Fossil aquifers were lately adopted as the sole water source to provide the irrigation water requirements of the ongoing reclamation activities in barren areas. Yet, the scarcity of measurements regarding the changes in the aquifers' storage poses a great challenge to such sustainable resource management. In this context, the Gravity Recovery and Climate Experiment (GRACE) mission enables a novel consistent approach to deriving aquifers' storage changes. In this study, the GRACE monthly solutions during the period 2003-2021 were utilized to estimate alterations in terrestrial water storage (TWS) throughout Egypt. Changes in groundwater storage (GWS) were inferred by subtracting soil water content, derived from the GLDAS-NOAH hydrological model, from the retrieved TWS. The secular trends in TWS and GWS were obtained using the linear least square method, while the non-parametric technique (Mann-Kendall's tau) was applied to check the trend significance. The derived changes in GWS showed that all aquifers are undergoing a significant loss rate in their storage. The average depletion rate over the Sinai Peninsula was estimated at 0.64 ± 0.03 cm/year, while the depletion rate over the Nile delta aquifer was 0.32 ± 0.03 cm/year. During the investigated period (2003-2021), the extracted groundwater quantity from the Nubian aquifer in the Western Desert is estimated at nearly 7.25 km
    Mesh-Begriff(e) Egypt ; Environmental Monitoring/methods ; Groundwater ; Water ; Desert Climate
    Chemische Substanzen Water (059QF0KO0R)
    Sprache Englisch
    Erscheinungsdatum 2023-04-20
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 782621-7
    ISSN 1573-2959 ; 0167-6369
    ISSN (online) 1573-2959
    ISSN 0167-6369
    DOI 10.1007/s10661-023-11171-3
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Assessment of climate change impacts on water quality parameters of Lake Burullus, Egypt.

    Shalby, Ahmed / Elshemy, Mohamed / Zeidan, Bakenaz A

    Environmental science and pollution research international

    2019  Band 27, Heft 26, Seite(n) 32157–32178

    Abstract: Egyptian Mediterranean coast hosts five shallow lagoons which play a vital role in the national economy. Lake Burullus is the second largest one that is located in the Nile Delta and is connected to the Mediterranean by a narrow outlet. This lagoon faces ...

    Abstract Egyptian Mediterranean coast hosts five shallow lagoons which play a vital role in the national economy. Lake Burullus is the second largest one that is located in the Nile Delta and is connected to the Mediterranean by a narrow outlet. This lagoon faces various anthropogenic-induced implications that threat its ecosystem and biodiversity. The prime objective of this study is investigating the impacts of future climate change (CC) on its characteristics. A 2-D hydro-ecological modeling for the lagoon was implemented, using MIKE21FM. The proposed model was calibrated and validated against the collected water quality records, for two successive years (2011-2013), at twelve monitoring stations throughout the lagoon. The simulations were executed for various parameters, including water depth, salinity, DO, BOD, and nutrient components. Six simulations from different regional climate models (RCMs) were obtained and examined to extract the most accurate climatic projections for the lagoon coordinates. These climatic estimates cover three Representative Concentration Pathways (RCPs) scenarios according to the IPCC's Fifth Assessment Report (AR5). A moderate sea level rise (SLR), locally projected offshore from the Nile Delta coast, was obtained. The validated model was forced with the climatic and SLR projections of 2 years representing the mid and long-term future of the twenty-first century. The model results showed that the developed model is an efficient tool to simulate the lagoon characteristics. The results of the modified model showed that CC has the potential to radically alter the physical and chemical structure of Lake Burullus. The results emphasized that the lagoon is expected to be warmer and more saline. The risk of oxygen depletion is firmly predictable with significant spatial differences of DO decreasing. A prolonged residence time is expected, accompanied by an increasing trend of phosphate and chlorophyll-a and a decreasing trend of nitrate. CC impacts on Lake Burullus should be considered in its urgently required management plan.
    Mesh-Begriff(e) Climate Change ; Ecosystem ; Egypt ; Environmental Monitoring ; Lakes ; Water Quality
    Sprache Englisch
    Erscheinungsdatum 2019-08-07
    Erscheinungsland Germany
    Dokumenttyp Journal Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-019-06105-x
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Volltext online

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