An introduction from the Gulf of Maine Aquarium.
Primary Production In Streams and Rivers
River morphology and continuous estimation of primary production of phytoplankton, microphytobenthos, or macrophytes in streams and rivers based on diurnal changes of the water oxygen concentration. In English and German.
Geography Action! Rivers 2001
The National Geographic Society presents river conservation activities and information geared toward the K-12 student.
WWF: The Rivers of Guianas
Expedition working to protect the biodiversity of the Guianas in the areas of logging and deforestation, poaching, and mercury contamination.