Détail de l'auteur
Documents disponibles écrits par cet auteur (6)
Ajouter le résultat dans votre panier Affiner la recherche
Article
Doug M. Harebottle, Auteur ; A. J. Williams, Auteur ; Yvonne Weiss, Auteur
Article
A. J. Williams, Auteur
Article
J. A. Harrison, Auteur ; A. J. Williams, Auteur ; M. MacIver, AuteurUnderstanding breeding site preferences is important for management of colonial waterbirds. The number of active colonial waterbird nests at a series of four small constructed wetlands in Cape Town was counted monthly from 1999 to 2008. In total[...]
Article
R. J. M. Crawford, Auteur ; D. C. Nel, Auteur ; A. J. Williams, Auteur ; A. Scott, AuteurAt Malgas Island, Western Cape Province, South Africa, active nest sites of Kelp Gulls were recorded from August to February, but mainly between October and December with a peak in November. In August and September all active sites were recently[...]
Article
A. J. Williams, Auteur ; V. L. Ward, Auteur ; L. G. Underhill, Auteur
Article
David Swanepoel, Auteur ; Les G. Underhill, Auteur ; Doug M. Harebottle, Auteur ; Marius J. Wheeler, Auteur ; A. J. Williams, AuteurWith a perimeter of 82km, the Theewaterskloof Dam is the largest dam in the Western Cape. This paper, based on midsummer and mid-winter surveys between 1993 and 2005, assesses the importance of the dam for waterbirds. The median numbers of water[...]
