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Illuminates the role of dominant ecological factors and of human activities on the organisms present in a range of watercourses and on the functioning of these ecosystems.
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 europhication to trophic pollution; toxic pollution; biological methods of evaluating pollution.