How much wetland has the world lost? Long-term and recent trends in global wetland area

  title={How much wetland has the world lost? Long-term and recent trends in global wetland area},
  author={Nick C. Davidson},
  journal={Marine and Freshwater Research},
  • N. Davidson
  • Published 16 October 2014
  • Environmental Science
  • Marine and Freshwater Research
It has been frequently stated, but without provision of supporting evidence, that the world has lost 50% of its wetlands (or 50% since 1900 AD). This review of 189 reports of change in wetland area finds that the reported long-term loss of natural wetlands averages between 54–57% but loss may have been as high as 87% since 1700 AD. There has been a much (3.7 times) faster rate of wetland loss during the 20th and early 21st centuries, with a loss of 64–71% of wetlands since 1900 AD. Losses have… 

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