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The Implications Of Climate Change On Water Quality And Ecosystem Of Nasser Lake, Egypt

Congress: 2015
Author(s): M.Nageeb Rashed (Aswan, Egypt), M.Nageeb Rashed
Faculty of Science, Aswan University, Egypt1

Keyword(s): Sub-theme 17: Climate change, impacts and adaptation,
AbstractClimate change is one of the basic drivers of change for water and can affect water resources directly, but also indirectly through its impact on the other drivers. From the supply side, climate change can directly affect the water cycle and, through it, the quantity and quality of water resources available to meet human and environmental demands, lower minimum flows in rivers, affecting water availability and quality for flora and fauna, drinking water intake, energy production (hydropower), thermal plant cooling and navigation. High Dam Lake is one of the largest man-made Lake in Africa , It includes Lake Nasser which extends for about 330 Km in Egypt. Lake Nasser water is a major source used for drinking, irrigation and domestic purposes in Egypt. Aquatic ecosystems of the Lake region support delicate, deeply interconnected webs of life which are highly adapted to the physical, chemical and biochemical characteristics and cycles of the lakes themselves. Warmer water temperatures affect physical, chemical, and biological processes. It reduces dissolved oxygen concentrations, which are a critical aquatic ecosystem requirement. Changes in rate of chemical reactions in the water column, sediment-water interface, and water-atmosphere interface are also expected. The present study aims to monitoring climatic change on Lake Nasser through the past 20 years (since the year 1991). The monitoring includes the physicochemical parameters (Temperature, pH, conductivity, dissolved oxygen,CO2 ,nitrate and other chemical parameters) in Lake water and sediment since the year 1991 to the year 2013. The obtained results indicated that as the Lake water temperature increases from the year 1991 to the year 2013, dissolved oxygen decreased from 10.8 to 6.1 ppm. ,as well as the other parameters affected by temperature. Keywords: Climatic change; Nasser Lake; Water, Aswan, Egypt. 1.Agoumi, A.( 2001). Vulnerability studies on three North Africa countries (Algeria, Morocco and Tunisia) with respect to climatic changes, final report of UNEP-GEF project RAB94G31. 2.FAO( 2008). Climate change adaptation and mitigation: challenges and opportunities for food security, Information document HLC/08/INF/2, High-Level Conference on World Food Security: the Challenges of Climate Change and Bioenergy, 3-5 June 2008, Rome, Italy. 3.IDRCDRC(2010). Report "New Land, New Life" Project West of the High Dam Lake, Aswan, Egypt Adaptation to Climate Change .
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