Evolution démographique d'une population de musaraignes aquatiques (Neomys fodiens) en Suisse romande

Studies on water shrews, Neomy fodiens, showed a significant decrease of capture rates throughout the winter period. Thereafter, during reproduction, animals dispersed along the stream as far as one kilometer from their original site. In this work, we assess the extension of their dispersion movements. We suppose that very small populations persist wintertime at localized spots and from their recolonize the empty habitats