Bibliothèque Tour du Valat

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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Status and habitat changes in the endangered Spanish Imperial Eagle Aquila adalberti population during 1974-2004: implications for its recovery
Auteurs :	Luis Mariano Gonzalez, Auteur ; Javier Oria, Auteur ; Roberto Sanchez, Auteur ; Antoni Margalida, Auteur ; Antonio Aranda, Auteur ; Luis Prada, Auteur ; Javier Caldera, Auteur ; Jose Ignacio Molina, Auteur
Type de document :	Article
Dans :	Bird Conservation International (18(3) SEP 2008)
Article en page(s) :	242-259
Langues:	Anglais
Résumé :	The distribution and abundance of Spanish Imperial Eagle Aquila adalberti populations between 1974 and 2004 were determined using information from national censuses. Its breeding area occupies the south-western quadrant of the Iberian Peninsula (Spain and Portugal) and is composed of 13 nuclei and 5 subpopulations. Since 1974, population levels in all nuclei, except the one in Donana, have expanded. The non-breeding dispersion area, according to sightings of juvenile and immature individuals in quadrants of 10 x 10 km, coincided with that of the breeding area. Bibliographical information showed that halfway through the 19(th) century the Spanish Imperial Eagle was considered abundant, at least locally; and most cited breeding areas were in relatively human-occupied plains. Towards the end of the 19th century the population became scarce; remaining so for most of the 20th century, with remote mountain ranges being the most cited breeding habitats. The comparison between the data from the first census, in 1974, that located

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