River health - What are the symptoms

Abstract

R ivers are extremely important sources of water, especially in South Africa, where they provide about 70% of water used. For rivers to keep on providing their goods and services they need to be kept as healthy as possible. But how do we monitor this health? It is not just the water that needs to be of good quality: a multitude of factors determine the health of a river ecosystem. Freshwater experts, therefore, look at a multitude of things to determine what the state of health of a river system is.

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