Dynamique comparée des populations de bouquetin des alpes (Capra ibex ibex) et implication pour le suivi de ces populations
type: CreativeWork
description: We studied the dynamic of nine populations of Alpine ibex ( Capra ibex ibex ) in five protected areas. We showed a strong effect of age on demographic parameters, with a marked decrease of survival after 10-12 years of age. We also found a high variability of old females' reproduction between populations. Contrary to what is expected for a highly dimorphic species like ibex, males survived as well as females except for old individuals. Winter harshness had a negative impact on survival of old individuals but not on reproduction and survival of young. We conclude that ibex have evolved a highly conservative life-history tactic compared to other ungulates studied to now. From a management viewpoint we also showed that under some circumstances ground counts might provide reliable estimates of ibex population trends.
abstract: We studied the dynamic of nine populations of Alpine ibex ( Capra ibex ibex ) in five protected areas. We showed a strong effect of age on demographic parameters, with a marked decrease of survival after 10-12 years of age. We also found a high variability of old females' reproduction between populations. Contrary to what is expected for a highly dimorphic species like ibex, males survived as well as females except for old individuals. Winter harshness had a negative impact on survival of old individuals but not on reproduction and survival of young. We conclude that ibex have evolved a highly conservative life-history tactic compared to other ungulates studied to now. From a management viewpoint we also showed that under some circumstances ground counts might provide reliable estimates of ibex population trends.
author: Largo, Émilie
language: fr
keywords: Life history tactics, Counts, Multiplication rate, Climate, Density dependence, Capture recapture, Reproduction, Senescence, Survival patterns, Ungulates, Capra ibex ibex, Alpine ibex, Bouquetin des Alpes, Ongulés, Patrons de survie, Sénescence, Capture marquage recapture, Densité dépendance, Climat, Taux de multiplication, Tactiques d'histoire de vie
date published: 2008
date modified: 2026-07-27T21:07:47Z
provider: Université de Sherbrooke
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Université de Sherbrooke

PropertyValue
property ID: Handle
value: https://hdl.handle.net/11143/5089