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Stream conservation. --- Roads --- Wildlife habitat improvement. --- Fords (Stream crossings) --- Environmental aspects. --- Design and construction.

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

While almost every aspect of society-nature interactions can be treated as an environmental security issue, the threats to human societies originating from inadequate freshwater management constitute one of the most wi- spread and pressing problems. For thousands of years rivers and river valleys have been the cradle of human civilizations. Rivers have provided not only food and freshwater, but also shelter and means of transportation, and they are still an essential component in every national and regional economy. In turn, growing needs of human societies, accompanied by growing abilities, have caused significant river alterations and ecosystem changes that have resulted in river contamination, biodiversity loss and general riverine ecosystem degradation. The extinction of sturgeon species is one of the most eloquent examples of the negative and irreversible influence of human society on river e- systems. The sturgeon, sometimes called the “living fossil” or living “dinosaur” of the fish world, is known to have lived since the time of the dinosaurs, for at least 250 million years, and is currently on the verge of extinction solely due to anthropogenic impacts.

Sturgeons --- Fish habitat improvement --- Conservation --- Fishes --- Fishery management --- Stream conservation --- Wildlife habitat improvement --- Acipenseridae --- Acipenseriformes --- Habitat improvement --- Nature Conservation. --- Environmental management. --- Ecology. --- Endangered ecosystems. --- Environmental pollution. --- Environmental sciences. --- Environmental Management. --- Ecosystems. --- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution. --- Environment, general. --- Environmental science --- Science --- Chemical pollution --- Chemicals --- Contamination of environment --- Environmental pollution --- Pollution --- Contamination (Technology) --- Asbestos abatement --- Bioremediation --- Environmental engineering --- Environmental quality --- Factory and trade waste --- Hazardous waste site remediation --- Hazardous wastes --- In situ remediation --- Lead abatement --- Pollutants --- Refuse and refuse disposal --- Threatened ecosystems --- Biotic communities --- Nature conservation --- Balance of nature --- Biology --- Bionomics --- Ecological processes --- Ecological science --- Ecological sciences --- Environment --- Environmental biology --- Oecology --- Environmental sciences --- Population biology --- Environmental stewardship --- Stewardship, Environmental --- Management --- Conservation of nature --- Nature --- Nature protection --- Protection of nature --- Conservation of natural resources --- Applied ecology --- Conservation biology --- Endangered ecosystems --- Natural areas --- Environmental aspects --- Ecology --- Nature conservation. --- Ecology . --- Water pollution. --- Environment. --- Aquatic pollution --- Fresh water --- Fresh water pollution --- Freshwater pollution --- Inland water pollution --- Lake pollution --- Lakes --- Reservoirs --- River pollution --- Rivers --- Stream pollution --- Water contamination --- Water pollutants --- Water pollution --- Waste disposal in rivers, lakes, etc. --- Biocenoses --- Biocoenoses --- Biogeoecology --- Biological communities --- Biomes --- Biotic community ecology --- Communities, Biotic --- Community ecology, Biotic --- Ecological communities --- Ecosystems --- Natural communities