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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Coexisting with fire: The case of the terrestrial tortoise Testudo graeca in mediterranean shrublands
Auteurs :	Ana Sanz-Aguilar, Auteur ; Jose Daniel Anadon, Auteur ; Andres Gimenez, Auteur ; Ruben Ballestar, Auteur ; Eva Gracia, Auteur ; Daniel Oro, Auteur
Type de document :	Article
Dans :	Biological Conservation (144(3) MAR 2011)
Article en page(s) :	1040-1049
Langues:	Anglais
Résumé :	Fire and fire management are recognized as important factors in biodiversity conservation. Measuring species-level demographic, behavioural and population responses to different fire regimes is essential for designing adequate management policies. Here we assessed the impact of fire on survival rates, reproduction and movement patterns in Testudo graeca, an endangered terrestrial tortoise inhabiting the Mediterranean region, a system in which fire plays a relevant role in the functioning of their ecosystems. Then we predicted the probabilities of quasi-extinction of T. graeca under several fire regimes and population sizes by means of stochastic population models. Our results showed that fire caused direct and delayed reductions in local survival, young individuals being the most affected. There were not differences in fecundity and movement patterns of tortoises between burned and unburned areas. Population models showed a strong variation in the probability of quasi-extinction of populations depending on the fire regime and the population size. Under fire frequencies similar to those occurring in the wild (

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