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How do we know when a species at risk has recovered? It's not just a matter of numbers

  • Written by H. Resit Akcakaya, Professor of Ecology and Evolution, Stony Brook University (The State University of New York)
How do we know when a species at risk has recovered? It's not just a matter of numbersBison in Theodore Roosevelt National Park, N.D.Jay Gannett, CC BY-SA

Around the world, animals and plants are disappearing at alarming rates. In May 2019, a major U.N. report warned that around one million species were at risk of extinction – more than at any other time in human history.

Conservation scientists like me focus on predicting...

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