We studied post-fire vegetation within four burned patches created by wildfires dur- ing the summer of 1997 in lower calcareous Provence. We recorded post-fire floristic composition in 82 plots within those patches for the first three... more
We studied post-fire vegetation within four burned patches created by wildfires dur- ing the summer of 1997 in lower calcareous Provence. We recorded post-fire floristic composition in 82 plots within those patches for the first three years following the fires. Floristic richness was calculated for each plot, and the Shannon diversity and evenness indexes were calculated in a re- duced
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Our first aim was to document the effects of palaeotemperatures and vegetation changes on beetle assemblages, and secondly to determine the extent to which surrogacy analysis at the family taxonomic level reveals patterns evident from... more
Our first aim was to document the effects of palaeotemperatures and vegetation changes on beetle assemblages, and secondly to determine the extent to which surrogacy analysis at the family taxonomic level reveals patterns evident from lower taxa analysis. The sedimentary sequence sampled on the experimental site of ‘La Grande Pile’ (Vosges, France) covers the whole of the last climatic cycle.
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Due to demographic growth over the last few decades, urban development and its impacts on wildland areas (diversity loss, fire risk) has become a major concern in developed communities and among others in Mediterranean France. We aim to... more
Due to demographic growth over the last few decades, urban development and its impacts on wildland areas (diversity loss, fire risk) has become a major concern in developed communities and among others in Mediterranean France. We aim to classify urban-forest interfaces types in order to discuss the impact of urban landscape development on wildland areas. Urban-forest interface types were computed
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... Burel, F. and Baudry, J., 1990. Structural dynamic of a hedg erow landscape in Brittany France. Landscape Ecol., 4: 197210. Cameron, RAD, and MorganHuws, DI, 1975. Snail faunas in the early stages of a chalk grassland succession.... more
... Burel, F. and Baudry, J., 1990. Structural dynamic of a hedg erow landscape in Brittany France. Landscape Ecol., 4: 197210. Cameron, RAD, and MorganHuws, DI, 1975. Snail faunas in the early stages of a chalk grassland succession. Biol. J. Linn. Soc., 7: 215229. ...
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Abstract. In a rural landscape, scale vegetation patterns of woody species are controlled by both abiotic and land use factors. The woody species composition in 126 sample plots was analysed and land use factors and some abiotic... more
Abstract. In a rural landscape, scale vegetation patterns of woody species are controlled by both abiotic and land use factors. The woody species composition in 126 sample plots was analysed and land use factors and some abiotic parameters were quantified using land register ...
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Abstract The factors responsible for the patterns of niche differentiation and narrow endemism have rarely been investigated in annual Mediterranean plants.
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Landscapes are typically complex systems which do not necessarily allow performing large scale field experiments. A lot of studies hence analyzed correlations between landscape structure and species distribution. However, empirical data... more
Landscapes are typically complex systems which do not necessarily allow performing large scale field experiments. A lot of studies hence analyzed correlations between landscape structure and species distribution. However, empirical data integrate a non-reducible part of contingency, which implies a major issue: the generalization of results. In such complex contexts, modeling can be useful since it allows isolating factors and
Research Interests: Ecology, Cellular Automata, Complex System, Field Experiment, Ecological complexity, and 11 moreSpecies Distribution, Data Integrity, Landscape Pattern, Landscape Structure, Plant species, Large Scale, Ecological Applications, Theoretical Model, Context Model, Linear System and Response, and Cellular automaton
The effects of landscape configuration on the genetic connectivity of the heterostylous species Primula vulgaris Huds. (Primulaceae) were studied using AFLP markers. Isolation by distance pattern was shown by spatial autocorrelation... more
The effects of landscape configuration on the genetic connectivity of the heterostylous species Primula vulgaris Huds. (Primulaceae) were studied using AFLP markers. Isolation by distance pattern was shown by spatial autocorrelation analysis; moreover, hedgerow network distances were found to contribute less than Euclidian distances to spatial genetic structure. Pollen flow is probably the main factor shaping the spatial genetic structure rather than seed dispersal, which is limited in this myrmecochorous species. Detailed analysis on the genetic similarity between neighborhoods and differentiation rates showed that density of hedgerow networks impede gene flow. We therefore concluded that a high degree of habitat contiguity does not necessarily promote genetic connectivity.
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Research Interests: Reproduction, Principal Component Analysis, Diet, Agriculture, Urbanization, and 14 moreFrance, Environmental Change, Biological Sciences, Protein Structure and Function, Butterflies, Urban Renewal, Animals, Land Use, Ecosystem, Larva, HUman Disturbance, Conservation of Natural Resources, Species Specificity, and Urban Area
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Abstract Mediterranean mountains are known for their high rate of endemism. The summits of Basse Provence (SE France) are sometimes dominated by the thorny cushion plant Genista lobelii DC. Taxonomic review shows that this species should... more
Abstract Mediterranean mountains are known for their high rate of endemism. The summits of Basse Provence (SE France) are sometimes dominated by the thorny cushion plant Genista lobelii DC. Taxonomic review shows that this species should be considered as an endemic of Basse Provence. Distribution map, floristic description and ecological review of G. lobelii populations in south eastern France, supported by numerical classification and ordination, are presented.
In order to assess the relative role of local versus landscape variables on shrub species composition and the species richness of hedgerows, a multi-scale approach was used. Along with landscape heterogeneity indices, graph theory derived... more
In order to assess the relative role of local versus landscape variables on shrub species composition and the species richness of hedgerows, a multi-scale approach was used. Along with landscape heterogeneity indices, graph theory derived indices were used to explore physical connectivity in hedgerow networks. Variation partitioning was conducted by partial Canonical Correspondence Analysis (CCA) for shrub species composition, and multiple regression for shrub species richness.Shrub species composition and shrub species richness are determined by several interrelated factors: (1) the influence of adjacent land use was weak, while other local variables, e.g. hedgerow type, management and structure variables, were more important; (2) broad spatial scales explained more variation in shrub species distribution in hedgerows than fine spatial scales, probably in relation to their dispersal syndromes; (3) the main factors explaining variation in shrub species composition were landscape patterns variables, and (4) shrub species richness, however, was principally explained by local variables.Therefore, local and landscape variables have balancing effects, and both should be considered when explaining species distribution in hedgerow networks.
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... Biological consequences of fragmentation and isolation are manifold depending on the taxonomicgroups and the hierarchical levels considered [25, 40 ... 8] Lavorel S., McIntyre S., Landsberg J., Forties TDA, Plant functional... more
... Biological consequences of fragmentation and isolation are manifold depending on the taxonomicgroups and the hierarchical levels considered [25, 40 ... 8] Lavorel S., McIntyre S., Landsberg J., Forties TDA, Plant functional classifications: from general groups to specific ...