Multiscale determinants of tree frog (Hyla arborea L.) calling ponds in western Switzerland

Détails

ID Serval
serval:BIB_828D22EC688D
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Multiscale determinants of tree frog (Hyla arborea L.) calling ponds in western Switzerland
Périodique
Biodiversity and Conservation
Auteur(s)
Pellet J., Hoehn S., Perrin N.
ISSN
0960-3115
Statut éditorial
Publié
Date de publication
2004
Peer-reviewed
Oui
Volume
13
Numéro
12
Pages
2227-2235
Langue
anglais
Résumé
A tree frog (Hyla arborea L., 1758) metapopulation in western Switzerland was studied during spring 2001. All potential calling ponds in an area of 350 km(2) were searched for tree frog calling males. Twenty-nine out of 111 ponds sheltered between 1 and 250 callers. Most ponds were occupied by less than 12 males. Pond parameters were measured at three different levels using field analysis and a Geographical Information System (GIS). The first level was water chemistry and pond-associated measures. The second level was the surrounding land use in a 30 m buffer around the pond. The third level consisted of landscape indices on a broader scale (up to 2 km). Logistic regression was applied to identify parameters that can predict the presence of calling males in a pond. Response variable was the presence or absence of callers. Four significant parameters allowed us to explain about 40% of the total deviance of the observed occupational pattern. Urbanization around the pond had a highly negative impact on the probability of presence of calling males. Hours of direct sunlight on the pond was positively correlated with callers. Higher water conductivity was associated with a lesser probability of species presence. Finally, the further the closest two-lane road, the higher the probability of callers presence. Our results show that presence or absence of callers is influenced by factors acting at various geographical scales.
Mots-clé
calling males, conductivity, conservation, Hyla arborea, pond selection, road network, sunlight, urbanization
Web of science
Création de la notice
24/01/2008 18:53
Dernière modification de la notice
03/03/2018 18:50
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