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The global abundance and size distribution of lakes, ponds, and impoundments
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
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2006 (English)In: Limnology and Oceanography, ISSN 0024-3590, Vol. 51, no 5, 2388-2397 p.Article in journal (Refereed) Published
Abstract [en]

One of the major impediments to the integration of lentic ecosystems into global environmental analyses has been fragmentary data on the extent and size distribution of lakes, ponds, and impoundments. We use new data sources, enhanced spatial resolution, and new analytical approaches to provide new estimates of the global abundance of surface-water bodies. A global model based on the Pareto distribution shows that the global extent of natural lakes is twice as large as previously known (304 million lakes; 4.2 million km(2) in area) and is dominated in area by millions of water bodies smaller than 1 km(2). Similar analyses of impoundments based on inventories of large, engineered dams show that impounded waters cover approximately 0.26 million km(2). However, construction of low-tech farm impoundments is estimated to be between 0.1% and 6% of farm area worldwide, dependent upon precipitation, and represents > 77,000 km(2) globally, at present. Overall, about 4.6 million km(2) of the earth's continental "land" surface (> 3%) is covered by water. These analyses underscore the importance of explicitly considering lakes, ponds, and impoundments, especially small ones, in global analyses of rates and processes.

Place, publisher, year, edition, pages
2006. Vol. 51, no 5, 2388-2397 p.
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-23521ISI: 000240673800041OAI: oai:DiVA.org:uu-23521DiVA: diva2:51295
Available from: 2007-01-30 Created: 2007-01-30 Last updated: 2014-01-17Bibliographically approved

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