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Article
Urbanization, climate and ecological stress indicators in an endemic nectarivore, the Cape Sugarbird
B. Mackay, Auteur ; A. T. K. Lee, Auteur ; P. Barnard, Auteur ; A. P. Møller, Auteur ; M. Brown, AuteurStress, as a temporary defense mechanism against specific stimuli, can place a bird in a state in which growth rates and resistance to diseases are diminished. The Cape Sugarbird Promerops cafer is an endemic specialist of the Cape Floristic Reg[...]
Article
R. E. Simmons, Auteur ; P. Barnard, Auteur ; W. R. J. Dean, Auteur ; G. F. Midgley, Auteur ; W. Thuiller, Auteur ; G. Hughes, AuteurGlobal climate warming, now conclusively linked to anthropogenically-increased CO(2) levels in the earth's atmosphere, has already had impacts on the earth's biodiversity and is predicted to threaten more than 1 million species with extinction b[...]
Article
R. E. Simmons, Auteur ; P. Barnard, Auteur ; I. G. Jamieson, AuteurThe ability of wetland birds to rapidly find and exploit ephemeral pans is well known in arid lands, but the episodic nature of such events means that the methods employed are poorly understood. Birds may: (i) wander randomly until wetlands are [...]
