Toxic Contamination

This problem can have direct and dramatic impacts on both human and ecosystem health. Toxic substances originate not only from industrial activities and mining, but also as a result of intensive agriculture practices. Identification of the number of lakes and reservoirs exhibiting toxic contamination will doubtlessly increase in future years as we obtain more information on their concentrations in the environment, particularly in developing countries. Major impacts of toxic substances include the disappearance of sensitive species, as well as their accumulation in lake sediments and biota. The latter can directly and indirectly impact human health. Because the number of risk assessments applied to already-existing chemicals is currently extremely low (~500), a complete solution of this problem will take many years.

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