Linking territory quality and reproductive success in the chough (Pyrrhocorax pyrrochorax): implications for conservation management of an endangered population - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Ibis Année : 2006

Linking territory quality and reproductive success in the chough (Pyrrhocorax pyrrochorax): implications for conservation management of an endangered population

Résumé

As changes in land uses have been mentioned as the main factor to explain decline of chough population across western Europe, a study was carried out in Ouessant (western France) in order to link territory quality with reproductive success. As such an approach could be hindered by the fact that reproductive performance of birds could be influenced by their breeding experience, we analysed both inter-and intra-nest site variation in fledging success. Territory quality was quantified combining habitat selection, territory size, amount of feeding area and distance between nest and feeding area. Feeding habitats positively selected by chough were characterized by a mean sward height lower that 5cm. Foraging area was on average of 21,557 m². Feeding areas (ie. feeding habitat within foraging area) close to the nest were preferentially used. Fledging success appeared not to be influenced by the total area of feeding areas in chough territory, nor by the mean feeding flight distance. But fledging success adjusted to nest site and year appeard to be influenced by feeding area close to the nest : one additional fledging was expected for each additional 10,000 m² of feeding habitat within 300m of the nest. These first results bring elements which allowed us to consider recommend landscape management measures to ensure a favourable conservation status of local chough populations
Fichier principal
Vignette du fichier
KERBIRIOU_IBIS_HAL.pdf (727.97 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02554709 , version 1 (26-04-2020)

Identifiants

Citer

Christian Kerbiriou, Françoise Gourmelon, Frédéric Jiguet, Isabelle Le Viol, Frédéric Bioret, et al.. Linking territory quality and reproductive success in the chough (Pyrrhocorax pyrrochorax): implications for conservation management of an endangered population. Ibis, 2006, 148 (2), pp.352-364. ⟨10.1111/j.1474-919X.2006.00543.x⟩. ⟨hal-02554709⟩
34 Consultations
201 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More