Priority river basins

A possible scheme for prioritising river basins at global level. Major catchment basins are assessed for fish diversity (at family level) and for vulnerability (a combined indication of disturbance and potential water stress). Systems with both high diversity and high vulnerability are proposed as high priority for investment and management action, those with low diversity and little disturbance are lower priority. See text and source below.
Source: WCMC.
WCMC. 1998. Freshwater biodiversity: a preliminary global assessment. WCMC Biodiversity Series No. 8. World Conservation Press, Cambridge.