Systèmes dynamiques
Formation of Animal Groups: The Importance of Communication
de Vries, Gerda
University of Alberta

We investigate the formation and movement of self-organizing collectives of individuals in homogeneous environments.  We review a hyperbolic system of conservation laws based on the assumption that the interactions governing movement depend not only on distance between individuals, but also on whether neighbours move towards or away from the reference individual.  The inclusion of direction-dependent communication mechanisms significantly enriches the model behavior; the model exhibits classical patterns such as stationary pulses and traveling trains, but also novel patterns such as zigzag pulses, breathers, and feathers.  The same enrichment of model behavior is observed when we include direction-dependent communication mechanisms in individual-based models.

Mercredi, 19 juin, 11h30
Salle Des Plaines A