La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Avian response to landscape elements (tesserae) in an upland grassland habitat
Auteurs :	A. A. Davies, Auteur ; G. L. Maclean, Auteur
Type de document :	Article
Dans :	Ostrich (68(1) MAR 1997)
Article en page(s) :	1-7
Langues:	Anglais
Résumé :	Avian response to landscape elements (tesserae) at Camp Andrew, Lion's River Farming District, KwaZulu-Natal, South Africa, was measured in terms of abundance, occupancy and diversity per tessera. Flight paths between the tesserae were also quantified. As expected, occupancy varied from highest in the least disturbed tessera chill-grass) to lowest in exotic-plant and disturbed tesserae (wattle and mown-grass). Abundance and diversity, however, did not show this trend, but varied independently of whether the tesserae were natural, disturbed or exotic. Continuity diagrams, depicting the movement patterns of birds, show that avian response to heterogeneity was influenced by the relative suitability of each tessera. The life history traits of a given species may explain its unique response to a given tessera. A knowledge of avian responses to landscape pattern is important for conservation-management strategies.

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...