The ability of many introduced fish species to thrive in degraded aquatic habitats and their potential to impact on aquatic ecosystem structure and function suggest that introduced fish may represent both a symptom and a cause of decline in river health and the integrity of native aquatic communities.
The federal district court in Portland, Oregon, has ruled that the US government's operation of four dams on the lower Snake River violates the Clean Water Act. The court ordered the US Army Corps of
It is the tale of two European rivers. The Rhine and the Danube. No river system in the world has a density of industrial agglomerations comparable to that of the Rhine. The river connects the economies of some of the richest countries, while the Danube l
