Fragmentation by Dams Threatens Diadromous Fauna in Upstream Protected Areas – the Case of the La Amistad World Heritage Site (Costa Rica and Panama)

William McLarney1, Maribel Mafla Herrera2, Ana Maria Arias Moreno2 and Marcia N Snyder3, (1)ANAI, INC, Franklin, NC, United States, (2)Asociacion ANAI, Sabanilla, Costa Rica, (3)Environmental Protection Agency Corvallis, Corvallis, OR, United States