Marion Valeix

Researcher at CNRS (France)


Research Interests

I am a wildlife biologist and I completed my D.Phil. at the University of Paris 6 in 2006. After several years as a WildCRU post-doctorate, I now hold a permanent researcher position at the French CNRS (Centre National de la Recherche Scientifique) - Laboratory of Biometry and Evolutionary Biology (LBBE). The core of my research is based on a strong collaboration with Andrew Loveridge and David Macdonald from WildCRU.

Fields: behavioural ecology, spatial ecology, community ecology, trophic ecology, functional ecology, conservation ecology.

Study species: large African mammals

Main research themes: I am interested in the processes determining the spatio-temporal dynamics of the behavioural ecology of predator-prey interactions in large mammals. In particular, I study the mechanisms underlying habitat selection, movements and foraging strategies of large herbivores and carnivores. In this context, I am particularly interested in the link between animal behaviour and the functioning of populations and communities. Ultimately, I am aiming at taking into account the effects of predator-predator interactions and the composition of prey community in the foraging strategies, space use and movements of animals. A conceptual challenge is to conceive a realistic and dynamic functional response for carnivores. An applied challenge is to provide predictions of the spatial distribution of large mammals; an important information for conservation and for a better understanding of human-wildlife interactions. My research relies on behavioural observations, GPS collars, field experiments, and data analysis.

Other research themes: Mechanisms structuring large mammal communities ; Impact of high elephant population abundance on other large herbivores and ecosystems ; Functioning of savanna ecosystems ; Ecological determinants of human-wildlife conflicts in the surrounding of protected areas




Selected Publications

  • Oriol-Cotterill A, Valeix M, Frank LG, Riginos C & Macdonald DW (2015) Landscapes of coexistence for terrestrial carnivores: the ecological consequences of being downgraded from ultimate to penultimate predators by humans. Oikos 124: 1263-1273.

    Barnier F, Valeix M, Duncan P, Chamaillé-Jammes S, Barre P, Loveridge AJ, Macdonald DW & Fritz H (2014) Diet quality in a wild grazer declines under the threat of an ambush predator. Proceedings of the Royal Society B 281: 20140446.

    Elliot NB, Valeix M, Macdonald DW & Loveridge AJ (2014) Social relationships affect dispersal timing revealing a delayed infanticide in African lions. Oikos 123: 1049-1056.

    Valeix M, Loveridge AJ & Macdonald DW (2012) “Influence of prey dispersion on territory and group size of African lions: a test of the resource dispersion hypothesis” Ecology 93: 2490-2496.

    Valeix M, Hemson G, Loveridge AJ, Mills MGL & Macdonald DW (2012) “Behavioural adjustments of a large carnivore to access secondary prey in a human-dominated landscape” Journal of Applied Ecology 49: 73-81.

    Valeix M, Chamaillé-Jammes S, Loveridge AJ, Davidson Z, Hunt JE, Madzikanda H & Macdonald DW (2011) “Understanding patch departure rules for large carnivores: lion movements support a patch-disturbance hypothesis” The American Naturalist 178: 269-275.

    Valeix M, Fritz H, Sabatier R, Murindagomo F, Cumming D & Duncan P (2011) “Elephant-induced structural changes in the vegetation and habitat selection by large herbivores in an African savanna” Biological Conservation 144: 902-912.

    Valeix M, Loveridge AJ, Chamaillé-Jammes S, Davidson Z, Murindagomo F, Fritz H & Macdonald DW (2009) “Behavioral adjustments of African herbivores to predation risk by lions: spatiotemporal variations influence habitat use” Ecology 90: 23-30.