Importance, composition et distribution des populations d'Anatidés présentes en hiver dans l'ouest africain tropical in Biologie et gestion des populations d'oiseaux. Recherches Françaises Actuelles.
The results of the 1984 aerial counts of wintering waterfowl in the Senegal, Niger and Chad basins are given and discussed. Both palearctic and afro-tropical species of Anatidae are restricted to the Sahelian belt during the winter and do not enter
the Guinea savannas or the forest-savanna mosaic further south, even during the drought episodes. In such conditions, palearctic migrants and afro-tropical species both concentrate in a limited number of refuge areas within the Sahelian belt.
processes have biological implications on both national and international levels. The Sahelian biotopes hold a number of endemic biological assets and constitute the main wintering ground for a significant number of Palearctic migratory bird species.
Eco-pathologie des Canidés sauvages ou errants en zone paléasetique. Compte rendu du Colloque de Nancy, 9-11 octobre 1984 = Proceedings of the Symposium on the ecology and epidemiology of wild and feral Canids in the Palearctic Zone. Nancy, 9-11
with historical biogeography published in the Journal of Biogeography during 1998–2010. Their results indicated that historical biogeography is going through a growth period. Most of the AA. worked in Europe or North America. The Palearctic was the most analyzed