Encyclopedia of Lakes and Reservoirs

2012 Edition
| Editors: Lars Bengtsson, Reginald W. Herschy, Rhodes W. Fairbridge

Ecological Threat to Lakes and Reservoirs

  • Reginald W. Herschy
Reference work entry
DOI: https://doi.org/10.1007/978-1-4020-4410-6_74


Lakes and reservoirs hold about 90% of the world’s fresh surface water. According to the discussions at the 9th International Conference on the Conservation and Management of Lakes held in Shiga, Japan, in 2001, warning was given of some one billion people being at risk from overuse, water withdrawals, and pollution of these water bodies. Similar warnings were given at the 3rd World Water Forum at the Kyoto Conference in 2003.

The principal threats worldwide appear to be:
  • Accelerated eutrophication, which affects 54% of the lakes in the Asia-Pacific region, 53% in Europe, 28% of those in North America, and 41% of those in South America

  • Chemical pollution, which is the second most commonly cited threat to lakes

  • Alien plant and animal species, either introduced into lake environments in the ballast water of ships, as part of the aquarium trade, from small boats traveling between lakes, or in bait and by escaping from aquaculture, with some intentionally introduced to boost...

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  1. 2001 9th International Conference on the Conservation and Management of Lakes, Shiga, Japan.Google Scholar
  2. 2003 United Nations 3 rd World Water Forum, Kyoto, Japan.Google Scholar
  3. UNESCO, 2004 Education for all; Global Monitoring Report, Paris.Google Scholar
  4. 2006 Ecological threat to lakes, Edie News, Faversham House.Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Hydrology ConsultantReadingUK