BALWOIS 2004 Ohrid, Macedonia, 25-29 May 2004   CLASSIFICATION OF STREAM SITES AND REGIONAL PATTERNS FOR RIVERS IN THE TAGUS BASIN Domingo Baeza Sanz, Diego García del Jalón Laboratorio de Hidrobiologia. ETSI Montes, Universidad Politécnica de Madrid. (Madrid) SPAIN breil@lyon.cemagref.fr   Environmental dynamism is now considered as central to sustaining and conserving native species diversity […]