inscription
Portail d'information géographique

Résultats de la recherche (3 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • An attempt is made to demonstrate a causal relationship between the structure of the forest and the structure of its bird communities. The results allow a substantiation of the concept of forest alteration and the integration of ecological
  • parameters into modern forest management practice.
  • 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.
  • and of the assemblages of small foliage gleaness and of diurnal raptores were studied in ten sites within the unbroken primary forest.