Papers by Maryline Pellerin
Sui te à la mise en place, dans les années 1970, de plans de gestion des populations d'ongulés, l... more Sui te à la mise en place, dans les années 1970, de plans de gestion des populations d'ongulés, les cervidés, sangliers et ongulés de montagne ont connu une expansion remarquable en France. Bien que cette augmentation 20 faune sauvage n°269/novembre 2005
Oecologia, 2014
behaviour could be considered a form of breeding dispersal from a genetic point of view. here, we... more behaviour could be considered a form of breeding dispersal from a genetic point of view. here, we investigated ranging behaviour of 235 adult roe deer using intensive gPs monitoring in six populations across europe within the eUrODeer initiative. We show that excursions are common from June to august among females, with 41.8 % (vs. 18.1 % of males) making at least one excursion. Most individuals performed only one excursion per season and departure dates for females were concentrated in time, centred on the rutting period, suggesting a link with reproduction. The distance females travelled during excursions was significantly greater than the site-specific average diameter of a male home range, while travel speed decreased once Abstract Breeding dispersal, defined as the net movement between successive breeding sites, remains a poorly understood and seldom reported phenomenon in mammals, despite its importance for population dynamics and genetics. In large herbivores, females may be more mobile during the breeding season, undertaking short-term trips (excursions) outside their normal home range. If fertilisation occurs, leading to gene flow of the male genome, this communicated by göran c. ericsson.
Wildlife Biology, 2008
Pellerin, M., Saïd, S. & Gaillard, J-M. 2008: Roe deer Capreolus capreolus home-range sizes estim... more Pellerin, M., Saïd, S. & Gaillard, J-M. 2008: Roe deer Capreolus capreolus home-range sizes estimated from In this study, we compared kernel estimates of home-range size between VHF and GPS monitoring. We used three types of data to assess the monthly estimates of individual home-range size (VHF data based on 17 locations, subsampled GPS data based on 17 locations (with 1,000 replicates) and GPS data based on 720 locations) using three estimation methods for the smoothing parameter, h (reference, leastsquares cross-validation (LSCV) and fix). For all the three smoothing parameters, individual home ranges estimated from VHF and GPS data using 17 locations had very similar size. On the other hand, the use of reference or LSCV h values led home-range sizes from VHF or GPS data using 17 locations to be larger than the estimate obtained from the whole set of GPS data (720 locations). Such results emphasise the influence of using too few locations per month. On the contrary, using h fixed at 60 led to a home-range size close to that obtained from the whole set of GPS locations. The centroid of locations for a given individual in a given month only changed a little according to the data set used (the difference being < 100 m), suggesting a high accuracy for our locations. VHF and GPS areas can therefore be pooled within the same analysis of habitat use, provided that the smoothing parameter and the number of locations are standardised.
Journal of Zoology, 2005
Data on 22 radio-collared adult female roe deer Capreolus capreolus in the Chizé forest were used... more Data on 22 radio-collared adult female roe deer Capreolus capreolus in the Chizé forest were used to test whether their home-range size was influenced by resource availability and reproductive status. As roe deer females are income breeders and invest heavily in each reproductive attempt, they should be limited by energetic constraints. Thus it was expected that: (1) heavier females should have larger home ranges; (2) that home-range size should decrease with increasing vegetation biomass; (3) home-range size should increase with increasing reproductive effort (i.e. females with two fawns at heel should have larger home ranges than those with one fawn, which should have larger home range than females without fawns). To test these predictions, variation in spring-summer homerange size was studied in 2001 and 2002, using 95% kernel home-range estimation. Results showed that females do not adjust their home-range size in response to body mass or age. Home-range size increased with increasing reproductive success, but the magnitude of the change varied over the period of maternal care. Finally, although their home-range size decreased with increasing plant biomass (slope = − 0.11, SE = 0.065), female roe deer at Chizé did not fully compensate for declines in food availability by increasing home-range size.
Forest Ecology and Management, 2010
... layers (herbaceous layers &lt;0.5 m, low shrubs between 0.5 and 2 m, high shrubs between ... more ... layers (herbaceous layers &lt;0.5 m, low shrubs between 0.5 and 2 m, high shrubs between 2 and 8 m and trees &gt;8 m). For each plot and layer, we recorded the abundance-dominance of all vascular plant species with a scale of 7 levels (Braun-Blanquet, 1932): absence, rare and ...
European Journal of Wildlife Research, 2005
In this study we describe and calibrate a quantitative index method to estimate leaf biomass and ... more In this study we describe and calibrate a quantitative index method to estimate leaf biomass and forage availability for browsers at different feeding heights. The method is based on an index relating leaf biomass to a number of leaf contacts with a vertical, three-dimensional (25·25·165 cm) metallic quadrat with a central rod and takes into account the characteristics of leaves (shape, size, and thickness) to define plant categories and then produce general allometric equations per category. We then discuss the use of this biomass index to evaluate the quality of habitats for browsers in terms of food resources.
Canadian Journal of Zoology, 2010
In most previous studies of habitat selection, the use of a given habitat type is assumed to be d... more In most previous studies of habitat selection, the use of a given habitat type is assumed to be directly proportional to its availability. However, the use and (or) the selection of a given habitat may be conditional on the availability of that habitat. We aim here to (i) identify the environmental variables involved in habitat selection, (ii) identify classes of individuals with similar patterns of habitat selection, and (iii) assess whether habitat use changes with changing availability of habitat types, within monthly home ranges of female western roe deer (Capreolus capreolus (L., 1758)). We found that some females adjust their habitat use according to the distribution of resources within habitats. Females with similar home ranges in terms of resource quantity and quality showed similar patterns of habitat selection. Differences in habitat use between 2 years with contrasting resource availability showed that temporal changes of environmental conditions influenced the pattern of habitat selection by female roe deer. Habitat selection also differed between periods of the life cycle likely because of contrasted energy requirements. This study shows that the relationship between habitat use by herbivores and habitat availability is nonproportional, and that the availability of resources influences use mostly at intermediate values.
Wildlife Biology, 2008
S. 2008: A multi-patch use of the habitat: testing the First-Passage Time analysis on roe deer Ca... more S. 2008: A multi-patch use of the habitat: testing the First-Passage Time analysis on roe deer Capreolus capreolus paths. -Wildl. Biol. 14: xxx-xxx.
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Papers by Maryline Pellerin