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Sélection des sites de repos par le Cerf (Cervus elaphus L.) et le Chevreuil (Capreolus capreolus L.) vivant en sympatrie en forêt tempérée de moyenne montagne

Abstract : Red Deer (Cervus elaphus) and Roe Deer (Capreolus capreolus) are two abundant cervids in Europe, and they often share the same habitat. Cervids rest for about half of the time. However their bedsite selection criteria have rarely been studied.
Our goal is double : i) to describe bedsite selection patterns for each species at different temporospatial scales and ii) to compare those selection patterns between species.
The study took place in the Forêt Domaniale du Bougès, Parc National des Cévennes, France. Transect sampling helped us describe the characteristics of 425 bedsites, within 2 winter and 2 summer periods. PCR methodology applied to hair DNA collected on the bedsites proved to be efficient to distinguish between Red and Roe Deer.
At the forest stand scale, Red and Roe Deer widely overlap in their use of different stands types as bedding sites. Both cervids tend to avoid adult coniferous stands in winter and summer. Roe Deer is less selective than Red Deer at this scale and uses forest stands relative to their availability. Red Deer is highly selective and shows a marked preference for young coniferous stands.
At the microhabitat scale, Red and Roe Deer always search for good visual protection, through a well developed lateral cover. That cover is predominantly composed by conifers for the Red Deer, whereas the Roe Deer also uses deciduous cover when it is available during summer.
In winter, Roe Deer beds under a large canopy cover, this cover is larger than for Red Deer. It chooses bedsites near edges whereas Red Deer rests far away from them.
We discuss those differences in the selection patterns between the Red Deer, that occupies a wide home range, and the territorial Roe Deer, that lives on a more restricted range.
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Submitted on : Monday, April 5, 2004 - 5:57:21 PM
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  • HAL Id : tel-00005727, version 1

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Christophe Baltzinger. Sélection des sites de repos par le Cerf (Cervus elaphus L.) et le Chevreuil (Capreolus capreolus L.) vivant en sympatrie en forêt tempérée de moyenne montagne. Autre [q-bio.OT]. ENGREF (AgroParisTech), 2003. Français. ⟨NNT : 75ENGREF09⟩. ⟨tel-00005727⟩

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