Aves, p�le ornithologique de Natagora

Consultez les articles du Bulletin Aves !

Recherche

Retour à la liste des articles

Aves, 33/4 | 1996 | 209-220

  Relations between habitat and Bluethroat (Luscinia svecica cyanecula) population dynamics.
Bouquelle, V.

Article is available in pdf Download the French article in pdf (476 Kb)

Article summary

The decline and the disappearance of local Bluethroat population in Europe is generally attributed to the progressive evolution of their habitaat. We have tested this hypothesis by studying the relations between habitat characteristics and Bluethroat populations dynamics. In particluar, we have semi-quantitatively described the vegetation structure and potential preys (nature, abundance, quality) in two sites (one in Belgium and one in The Netherlands) with differing Bluethroat demography. No significant correlation between vegetation structure and Bluethroat demography has been found. We have nonetheless shown that there is similarity in vegetation profile in the Spanish habitat (as described in the literature) and in the studied Belgian site which are both characterized by increasing populations. Further research is needed to determine the role of vegetation structure on the leaving and (re)colonization of sites. The potential preys sampling tends to show that these are not the factor determining Bluethroat number fluctuations in the studied sites.

Articles published in the same bulletin