Researcherid : D-2215-2014


P1050744.JPGI study seed dispersal by animals and the impact of dispersers on the forest maintenance and regeneration. Today, seed dispersal is known to be a major process in ecosystem maintenance, particularly in the tropics where more than 80% of plant species are dispersed by animals. However, many questions still remain, mainly about the impact of human disturbance on this process.

Today, we only have a limited view on seed dispersal. Most studies concentrate on simplified systems, only corresponding to subsets of species. They usually focus on a single animal or plant species at a time. The study of plant-disperser mutualistic interactions within a network framework became essential, mainly to understand and evaluate how they face anthropogenic pressures.


My researches are thus at the intersection of several fields: ethology, feeding ecology, spatial ecology, movement ecology, botanic and conservation.


P1060004.JPGThe role of macaques in seed dispersal and the maintenance of tropical rainforests in South-East Asia

My first researches focused on seed dispersal by pigtailed macaques. We highlighted their behavioral and feeding flexibility (allowing a higher tolerance to human disturbance), they effectiveness as seed dispersers and threats they have to face. These macaques, like most Cercopithecinae, turned out to be essential in seed dispersal networks in South-East Asia, mainly in case of human disturbance.


IMG_8186.JPGSeed dispersal by ungulates: an ecological filter in European temperate forests

The ‘Trame Verte et Bleue’, a measure set up during the ‘Grenelle Environnement’ (2007) in France, aims at fighting against landscape fragmentation, restoring ecological connections and enabling species to move and interact. In this context, the study of seed dispersal is essential to improve the efficiency of corridors, from the plant conservation point of view. A meta-analysis answered two main questions related to ungulates, known to be effective seed dispersers: 1) Do ungulates filter the flora according to specific traits? And, if so, 2) can we predict, from plant functional traits, the functional traits of the most probable disperser?



P1070155.JPG Frugivore communities and plant-disperser interactions

Today, I want to study seed dispersal enlarging my point of view to communities. My aim will be to understand how plant-frugivore interactions impact the whole ecosystem dynamics.