Mesures et \'equidistribution sur les espaces de Berkovich

The proof by Ullmo and Zhang of Bogomolov’s conjecture about points of small height in abelian varieties made a crucial use of an equidistribution property for small points'' in the associated complex abelian variety. We study the analogous equidistribution property at $p$-adic places. Our results can be conveniently stated within the framework of the analytic spaces defined by Berkovich. The first one is valid in any dimension but is restricted to algebraic metrics’', the second one is valid for curves, but allows for more general metrics, in particular to the normalized heights with respect to dynamical systems.