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Sujet de la thèse
Incorporating phylogeographic information into niche models to improve species re-distribution projections under climate warming and habitat fragmentation: the case of forest-dwelling species across European agricultural landscapes (PODARCIS)



Phylogeography, species distribution models, climate change, population genetics


Climate warming and habitat fragmentation are two key components of global change that push species to redistribute or evolve to adapt to the new conditions (Lenoir & Svenning, 2015; Pecl et al., 2017). To hindcast and forecast species redistribution under past and future environmental conditions, respectively, the state-of-the-art is to use species distribution models (SDMs) (Guisan & Zimmermann, 2000). However, traditional SDMs assume that individuals from all populations of a given species respond equally to environmental changes although different populations from the same species may respond differently to environmental changes (Valladares et al., 2014). The most recent scientific literature on SDMs suggests that incorporating intraspecific variation into SDMs leads to less pessimistic redistribution projections (Pearman et al., 2010; Oney et al., 2013). Phylogeography (Guiller & Madec, 2010; Guiller et al., 2012; Sherpa et al., 2017) can provide spatially and temporally explicit information on the genetic structure and differences among populations of the same species that could be used to incorporate intraspecific variation into SDMs and thus improve redistribution projections under climate change. This PhD project entitled PODARCIS specifically aims at incorporating intraspecific variation data obtained from a union of phylogeography and landscape genetics (Rissler, 2016) into SDMs. PODARCIS is part of the CNRS PEPS SURICATE project. Three model species of European temperate forests will be studied throughout the PhD project: the plants Geum urbanum and Oxalis acetosella characterized by different dispersal capacities, and  the tick Ixodes ricinus considered as the main vector of the Lyme Borreliosis in Western Europe and thus implying potential public health hazards.


Balbi M., Ernoult A., Poli P., Madec L., Guiller A., Martin M.-C., Nabucet J., Beaujouan V., Petit E. 2018. Functional connectivity in replicated urban landscapes in the land snail (Cornu aspersum). Mol. Ecol. DOI:10.1111/mec.14521.