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Assessing the impacts of climate change on water resources of a West African trans-boundary river basin and its environ- mental consequences (Senegal River Basin)

The Senegal River Basin (SRB) is a shared watershed in West Africa which includes regions (the upper basin, valley, and delta), characterized by distinct environmental conditions. An important feature of the Senegal River flow volume historically was its in- ter-annual irregularity, which caused a major water resource constrain. This situation has been accentuated during the long-term drought (1969–1984) in the Sahel zone which highlights the vulnerability of food-producing systems to climate change and variability. SRB is undergoing fundamental environmental, hydrologic, and socioeconomic transitions and represents a good illustration of sensi- tivity to climatic variations and opportunities for adaptation. This paper aims to study water resources systems under stress from cli- mate variability and change in the Senegal River Basin. The results show (1) through the compilation of available data, information and knowledge (sedimentological, climatical, geological, environmental, archeological, etc.), the chronological consequences of cli- mate change during the past millennium in West Africa, and also (2) an analysis of the recent impacts and vulnerability to climate change in the SRB and finally (3) the adaptation strategies in the SRB in order to identify and resolve problems associated with this water scarcity and to address the potential for guaranteed agricultural production in this narrow geographic area. Keywords: Senegal River Basin; water resources; climate change; consequences; adaptation

Auteur(s) : Cheikh Bécaye Gaye *, Moctar Diaw, Raymond Malou
Pages : 0140–0156
Année de publication : 2013
Revue : Sciences in Cold and Arid Regions
N° de volume : 2013, 5(1): 0140–0156
Type : Article
Mise en ligne par : MALOU Raymond