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Titre du document / Document title

RÉPARTITION DES DEUX ESPÈCES DE GRIMPEREAUX Certhia familiaris ET Certhia brachydactyla DANS LES PYRÉNÉES = The distribution of Common Treecreeper Certhia familiaris and Short-toed Treecreeper C. brachydactyla in the Pyrenees

Auteur(s) / Author(s)

CLOUET Michel ; JOACHIM Jean (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) INRA-CEFS, Comportement & Écologie de la Faune Sauvage, Chemin de Borde Rouge, BP52627, 31326 Castanet Tolosan, FRANCE

Résumé / Abstract

Records of the two sympatric treecreeper species Certhia familiaris and C. brachydactyla (n = 399) using song play-back were collected in spring (2004-2009) in 31 main stations dispatched east, west, north and south in the Pyrenees. Common Trecreeper account for 83 % of the records on the northern slope (n = 182), 46% of the records on the southern slope (n = 82) where its range was more contracted. It was lacking in easterm and western peripherical massifs. Mean altitude of records was 1,278m a.s.l. (470-2,025m; n = 264). Short-toed Treecreeper account for 36% of the records on the northern slope (n = 80), 79% of the records on the southern slope (n = 141 ) where its range was more expanded. Mean altitude was 1,189m a.s.l. (385-2,025m ; n = 220). On the northern slope, frequencies of both species were strongly negatively correlated along the altitudinal gradient resulting in the exclusive occurrence at high altitude of Common Treecreeper. On the southern slope the Short-toed Treecreeper was more frequent at all but one (1500-1700m a.s.l.) level and mainly at high altitudes. In pines forests of Central Pyrenees, species replaced each other from one slope to the other. A principal components analysis taking into account the habitat parameters underlines a strong opposition between species. Treecreeper is associated with the northern slope, and fir. Short-toed Treecreeper is linked to the southern slope. Distribution of the sympatric treecreepers is mainly depending of oceanic-mediterranean climate variations which determine the strong northern-southern slope opposition. Habitat selection would be the main mecanism limiting elevational range of the Short-toed Treecreeper under oceanic influence on the northern slope and the westernmost part of the southern slope where the Treecreeper seems better adaptated to high altitudes. Interspecific competition and distance from the center of its distribution (the beech-fir forest of the northern slope) could explain the range compression of the Treecreeper on the southern slope under continental-mediterranean influence, where the sibling species has a more expanded range and is more frequent.

Revue / Journal Title

Alauda    ISSN  0002-4619   CODEN ALUDAI 

Source / Source

2010, vol. 78, no2, pp. 137-148 [12 page(s) (article)] (3/4 p.)

Langue / Language

Français
Revue : Français

Editeur / Publisher

Société d'Etudes Ornithologiques de France, Brunoy, FRANCE  (1929) (Revue)

Mots-clés anglais / English Keywords

Vertebrata

;

Europe

;

Certhia familiaris

;

Geographic distribution

;

Aves

;

Slopes

;

Sympatry

;

Habitat

;

Competition

;

Climate

;

Altitude

;

Pyrenees

;

Mots-clés français / French Keywords

Certhiidae

;

Vertebrata

;

Europe

;

Certhia brachydactyla

;

Certhia familiaris

;

Répartition géographique

;

Aves

;

Versant

;

Sympatrie

;

Habitat

;

Compétition

;

Climat

;

Altitude

;

Pyrénées

;

Mots-clés espagnols / Spanish Keywords

Vertebrata

;

Europa

;

Certhia familiaris

;

Distribución geográfica

;

Aves

;

Declive

;

Simpatimetría

;

Habitat

;

Competencia

;

Clima

;

Altitud

;

Pirineos

;

Mots-clés d'auteur / Author Keywords

Certhia familiaris

;

Certhia brachydactyla

;

Altitude

;

Climats

;

Concurrence interspécifique

;

Essence forestière

;

Fréquences d'occurrence

;

Sélection de l'habitat

;

Sympatrie

;

Versants nord et sud

;

Pyrénées

;

Localisation / Location

INIST-CNRS, Cote INIST : 5316, 35400018073461.0060

Nº notice refdoc (ud4) : 22890527



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