Running Water: Agent of Erosion, Transport and Redistribution of Materials of the Earth's Crust; General Characteristics of Hydrographic Networks; Organisms and Ecosystems of Running Water; Current and Benthic Organisms: Chronic Instability of the Surface Horizon of the Substrate; The Hyporheic Environment: Continuity of the Substrate; Macrophytes of Running Waters: A Substrate for Algae and Fauna; Life in the Water Trail: Plankton; Fishes of Running Waters; Temperature, Biological Cycles and Distribution of Organisms; Light, Salts and Dissolved Oxygen: Secondary Ecological Factors in Running Water; Food Webs and Energy Flows; From Upstream to Downstream: Ecological Zonation of Water Courses; Ecological Impacts of Development of Water Courses; From Eutrophication to Trophic Pollution; Toxic Pollution; Biological Methods of Evaluation Pollution
