Freshwater ecoregions of North America

North America's freshwater habitats and the extraordinary biodiversity they contain are facing unprecedented threats from a range of sources. As an initial step in identifying those areas where protective and restorative measures should be implemented first, World Wildlife Fund-US assembled a team of leading scientists to conduct a conservation assessment of freshwater ecoregions. Freshwater Ecoregions of North America presents that assessment and outlines measures that must be taken to conserve, and in many cases restore, native biodiversity.