Alteration

Sens commun

Change in the status of an aquatic environment or a river system causing degradation. Alterations are defined by their nature (physical, ionic, organic, toxic, biological, etc.) and their effect (eutrophication * , asphyxia, poisoning, change in populations * , etc). In most cases these alterations are due to human activities, but they can also be natural.

Source:  According to the Ministry of Sustainable Development
Created : 28/02/2014
Last changed of "live" version : 15/04/2016
Last revision : 15/04/2016