State of Fisheries in Lake Qarun, Egypt: Review Article

Shalloof, Kariman A. Sh.

doi:10.21608/jades.2020.73188

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…They also create a new opportunity for the development of various types of human activities including recreation, tourism, fishing, aquaculture, chemical industry, etc. (Black, 1988;El-Shabrawy and Dumont, 2009;Ramzy, 2013;Anufriieva, 2018;Shalloof, 2020). Due to climate aridity and human activities, in some man-made lakes, the salinity can gradually fluctuate and increase, which along with ecosystem changes, create a lot of the problems for people and their activities (Hussein et al, 2008;Cohen, 2009;Afefe et al, 2016;Shadrin et al, 2016;Voyles, 2016;Shalloof, 2020).…”

Section: Introductionmentioning

confidence: 99%

Ecosystems of artificial saline lakes. A case of Lake Magic in Wadi El-Rayan depression (Egypt)

Anufriieva¹,

Goher²,

Hussian³

et al. 2020

Knowl. Manag. Aquat. Ecosyst.

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The Wadi El-Rayan is a depression in the Fayoum oasis collecting agricultural drainage water from the Fayoum. Since 1973, this drainage water formed two man-made lakes. Twenty years ago, a third lake, called Lake Magic was formed. Since this newly formed lake was not yet studied, in January of 2019 we conducted research related to its physico-chemical (ion composition, nutrients, heavy metals, etc.) and biological (phyto-, bacterio- and zooplankton) characteristics. The depth of the lake ranged from 1.5 to 9.0 m, water transparency was up to 4.0 m, and the water temperature was 13.6 °C. The average salinity was 29.1 g/l, and the salinity of drainage waters from agricultural fields was 2.9 g/l. A total of 28 phytoplankton species was identified belonging to Bacillariophyceae (eight species), Dinophyceae (three species), Cyanobacteria (seven species), Chlorophyceae (nine species) and Conjugatophyceae (one species). Chlorophyll a content varied from 14.3 to 24.2 μg/l. In zooplankton, there were three species of Ciliophora, five of Rotifera, and two Copepoda as well as Nematoda and Cirripedia larvae. Salinity in Lake Magic was much higher than in drainage waters coming in the lake. This is a result of a strong salinity increase in Lake Magic after its creation due to climate aridity, and salinity may markedly increase during the next 20 years along with the sharp changes of the lake's ecosystem.

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Section: Introductionmentioning

confidence: 99%

Ecosystems of artificial saline lakes. A case of Lake Magic in Wadi El-Rayan depression (Egypt)

Anufriieva¹,

Goher²,

Hussian³

et al. 2020

Knowl. Manag. Aquat. Ecosyst.

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“…To this end, this study aimed at creating a sustainable and inexpensive Landsat-based EC model that can easily notify fisheries managers of changes in the potential fish yield of Lake Qaroun in Egypt (pilot case study). Lake Qaroun was comprehensively studied regarding its water quality (Abdel-Satar et al 2010;Abou El-Gheit et al 2012;El-Sayed and Mosad 2017;Al-Afify et al 2019) and fisheries (El-Serafy et al 2014;Shalloof 2020). However, to the best of our knowledge, attempts to integrate geospatial technology, field measurements, mathematical computations, and fish yield empirical model in estimating the lake's potential fish yield are missing.…”

mentioning

confidence: 99%

Can statistical remote sensing aid in predicting the potential productivity of inland lakes? Case study: Lake Qaroun, Egypt

Mohamed

Khalil

El‐Kafrawy

et al. 2022

Stoch Environ Res Risk Assess

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This study aimed at creating a sustainable and inexpensive Landsat-based electrical conductivity model that can easily notify fisheries managers of changes in electrical conductivity and hence the potential fish yield of Lake Qaroun in Egypt. The study integrated geospatial technology, field measurements, mathematical computations, and fish yield empirical model into the adopted methodology. Seventeen sampling sites covering the entire study area were selected to measure the electrical conductivity (EC; mS/cm) and water depths (D; m) of Lake Qaroun, Egypt, during November 2018. Spatial analysis tools within ArcGIS were used to extract EC data from non-surveyed sites. A high-resolution Sentinel-2B MSI and a cloud-free medium-resolution Landsat-8 OLI scenes for Lake Qaroun were used for morphometric and regression analyses, respectively. For regression, 75% of the dataset was used to build up the regression model, while the remaining 25% was used for validation. The study selected Landsat band ratios that correlated with the highest certainty (R > 0.80) with the examined EC. Stepwise regression model was then developed to predict EC from Landsat-8 data. In choosing the best regression model, the study selected the significant model (P < 0.05) with the highest coefficient of determination (R2) and the least error metrics. Finally, the developed model was applied in calculating the potential yield of Lake Qaroun. The innovative EC model derived in the current study using Landsat-8 OLI for Lake Qaroun showed a very good performance in estimating 95% of EC values significantly with high acceptable accuracy. In closure, the model can be used very efficiently as a decision support tool in assisting managers not only in monitoring the lake’s electrical conductivity regularly, during the month of November, but also in making preliminary estimates of the lake’s potential yield.

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Lake Qarun between entangled history and blurred future: Retrospectives and prospective

Abdelmageed

Khalifa

Elsaied

et al. 2022

Egyptian Journal of Aquatic Research

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State of Fisheries in Lake Qarun, Egypt: Review Article

Cited by 5 publications

References 12 publications

Ecosystems of artificial saline lakes. A case of Lake Magic in Wadi El-Rayan depression (Egypt)

Ecosystems of artificial saline lakes. A case of Lake Magic in Wadi El-Rayan depression (Egypt)

Can statistical remote sensing aid in predicting the potential productivity of inland lakes? Case study: Lake Qaroun, Egypt

Lake Qarun between entangled history and blurred future: Retrospectives and prospective

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