Variations in bird communities of the Saharan mountains
2013
Characteristics and variations of the bird communities in the Saharan mountains were evaluated in five massifs from West to East: the Adrar of Mauritania, the Ahaggar in Algeria, the Adrar of the Iforas in north-eastern Mali, the Air Mountains in northern Niger, and the Red Sea Mountains in the Eastern Desert of Egypt. Bird censuses (n = 110) were conducted during dry seasons. A total of 139 species were recorded, of which 120 remained after elimination of occasional visitors and were used for analysis. Total richness and diversity increased from the most central and high Ahaggar towards the western, eastern and especially southern massifs. Among the resident communities the number of Saharo-Sindian species was higher in the central, eastern and western massifs, whereas Afrotropical species were more abundant in the southern ones. A principal component analysis distinguished three opposite poles of species linked with Adrar of the Iforas, Air and Red Sea mountains and cluster analysis led to the ordinatio...
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