Characterizing geographical space to analyze fauna movement

International audienceThe presented work focuses on the analysis of the relations between topographic features and animals movement in a context of biodiversity concern. Indeed space fragmentation is linked to loss of habitats and one proposal to favour displacements lies in maintaining and restoring ecological continuities. Our objective is to define a spatiotemporal model so that to highlight how land settlements and field shape influence movements. Our approach consists in modelling movements by taking into account animal specific behaviour and the spatial environment. Studies of land use by fauna enable new reading of the space and more particularly determination of species functional space organised in places dedicated to activities like feeding, resting, breeding and moving. From one species to another, environment apprehension differs and the challenge is to characterize the meaningful features in a multiple reading space. For instance, obstacles are not defined the same for roe deer as for wild boar. In order to reach this goal, we follow two methods. One is to analyse animal tracks on accurate fields. The second lies in the simulation of trajectories on real landscapes according to species. If these trajectories are relevant, we are to test spatial changes, like a corridor creation, and study its impact on movement