Between 1992–2003, $14.4 billion was spent in total in the 109 countries studied, including Brazil and China. (Dollar amounts here are in what researchers call "international dollars," a conversion from US dollars to account for differences in purchasing power in each country.) That investment resulted in a 29 percent-per-country average decrease in the rate of biodiversity decline between 1996–2008, the new paper concludes. [...]
"Our study answers the big question about the effectiveness of conservation investments," said Waldron. Most of the funding in that time period supported reserves and protected areas. "We only looked at spending that went directly to conservation, such as funding for park rangers, habitat protection, and so on." [...]
An additional $5 million investment in conservation could have slowed the loss of plant, animal, and other species by 50 percent in Peru and 90 percent in Rwanda during the period studied, according to the model. In some poor countries, the entire conservation budget amounts to $10 million or less, so an additional $5 million could have a big impact, Waldron said. [...]
In 2010, the 193 countries that are part of the UN's Convention on Biological Diversity agreed to put under protection 17 percent of land and 10 percent of oceans globally by 2020 to reduce the loss of biodiversity. But only a few countries are actually expected to reach their targets, according to a 2016 report.
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