Literaturdatenbank
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Ballouard, J.-M., Gravier, C., Fournière, K., Bonnet, X., & Caron, S. , Short term impact of field management on testudo hermanni hermanni and innovative survey methods. Unpublished paper presented at Atelier international sur la gestion et la restauration des populations et habitats de la Tortue d’Hermann / International workshop on the management and restoration of Hermann’s tortoise populations and habitats.
Added by: Admin (06 Jan 2014 18:24:01 UTC) |
| Resource type: Conference Paper BibTeX citation key: Ballouard2013 View all bibliographic details  |
Categories: General Keywords: Habitat - habitat, Schildkröten - turtles + tortoises, Südwesteuropa - South-Western Europa, Testudinidae, Testudo hermanni Creators: Ballouard, Bonnet, Caron, Fournière, Gravier Collection: Atelier international sur la gestion et la restauration des populations et habitats de la Tortue d’Hermann / International workshop on the management and restoration of Hermann’s tortoise populations and habitats |
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| Abstract |
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Testudo hermanni Testudinidae In France, tortoises (Testudo hermanni hermanni) populations are threatened due to destruction, urbanization, uncontrolled fires and closing of other areas owing to changing agricultural practices. It has been assumed that open habitats and water availability are critical in providing opportunities for thermoregulation, laying sites, and favoring the growth of food resources. Water availability supposedly relaxes environmental constraints. Therefore field management actions have been set up through a conservation Life+ program (2010-2014). We evaluated the effect of habitat openings and the creation of water troughs. We used a simple experimental design comparing control versus managed areas. We monitored tortoises (N = 78) fitted with radio transmitters and temperature data loggers before and after management (15-20 per experiment). We measured movement and physiological indexes such as body condition and basal stress level. We also used camera trapping to detect the use of the water troughs by tortoise. Despite we found no effect of the management on eco-physiological parameters assessed, the study suggests that tortoises can adapt to habitat change and hence to habitat management. Moreover we successfully used fibrocement slabs to detect unexpected population of juvenile’s tortoises suggesting that cohort of young individuals is a key component of population functioning. Therefore future management actions should consider them more specifically by providing, for instance, habitat refuge (i.e. shrubs). The use of dog for detecting efficiently individuals appears also particularly appropriated within the context of the Hermann conservation issues.
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