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What are coral reef services worth? $130,000 to $1.2 million per hectare, per year: experts
Date:10/16/2009

, slow the rise of atmospheric carbon levels and forestall anticipated climate change damage. Halving deforestation has a net present value estimated at $3.7 trillion, according to research.

The economic choice of turning such forests into timber or clearing them to make way for agriculture is not very clever, says Mr. Sukhdev. Stopping deforestation offers an excellent cost-benefit ratio.

Investment in protected areas holds exceptional high returns, he says. Previous studies have shown that investing $45 billion could secure nature-based services worth some $4.5 to 5.2 trillion annually. Among the specific examples cited: planting mangroves along a coastline in Vietnam cost $1.1 million but saved $ 7.3 million annually in dyke maintenance.

Examples of a rate of return on investments in ecosystem restoration:

  • Coral reefs: 7%, (with a cost-benefit ratio of 2.8);
  • Rivers: 27%, (cost-benefit ratio 15.5);
  • Tropical forests: 50% (cost-benefit ratio 37.3);
  • Mangroves: 40%, (cost-benefit ratio 26.4);
  • Grasslands: 79%, (cost-benefit ratio 75.1).

(see full graph online at: http://2.bp.blogspot.com/_OJDD8RZoYCo/StcIYKMgwmI/AAAAAAAABX8/8FvgumI3wgY/s1600-h/TTB+Graph.jpg)

TEEB is a UNEP-led project supported by the European Commission, German Federal Ministry for the Environment, and the UK Department for Environment, Food and Rural Affairs.

Biodiversity and society: understanding connections, adapting to change.

Over 600 scientists attending the international 2nd Open Science Conference Oct. 13-16 hosted by DIVERSITAS, a Paris-based NGO, issued a concluding statement confirming that, as we approach the 2010 Year of Biodiversity the fabric out of which the Earth system is woven is unravelling at an accelerating rate.

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Contact: Terry Collins
terrycollins@rogers.com
416-878-8712
Diversitas
Source:Eurekalert  

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