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Portail d'information géographique

Résultats de la recherche (10 résultats)

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Par Collection Par Auteur Par Date Par Sujet Par Titre
  • The bird communities of the natural forests of Arrabida (Portugal)
  • 1987
  • Bird structures of wet woodland stands (Alnion glutinosae) in Europe
  • 1987
  • The wild canary bird of the Atlantic islands has been selected within the past 500 years for the richness of its song and physical appearance. The Harz Mountains of Germany became renowned for the development of fine singers| Great Britain
  • and the Low Countries for show birds. - (DWG)
  • 1987
  • Fire, bird conservation and land management in the North-Mediterranean area
  • 1987
  • Forest bird communities in the Po Valley, Northern Italy
  • 1987
  • The New York fossils show that this bird was able to live in a colder climate and in a boreal, coniferous setting at a time when appropriate food (large mammal carrion) was available. The California Condor has suffered a greater reduction about
  • 11,000 yr B.P. when the extinction of many North American large mammals resulted in severely reduced availability of food for the California Condor and other large scavenging birds.
  • 1987
  • 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
  • 1987
  • Bird counts and habitat description were carried out using descriptors of natural and man-modified environments to characterize heterogeneous landscapes, at the Mont Pilat Regional Park on a grid of 212 sample points processed by multivariate
  • 1987
  • The avifauna of hedges and its seasonal variations was studied throughout a yearly cycle in the Autunois central France. The total number and the diversity of birds found on each plot was strongly correlated with certain characteristics
  • 1987
  • Ornithological surveys were carried out from 1981 to 1986 in the hinterland of French Guiana in order to find out the best possible location, and estimate the optimal size of a national park. The structure of the bird community
  • 1987