Ecoregions at Risk (IMAGE) Wildlife Conservation Society Caption Ecoregions at Risk: In a newly published study in Conservation Letters, researchers identify forty-one ecoregions across 45 nations that are in a 'crisis state', where humans have converted more than 10 percent of the little remaining habitat in just the last two decades. Credit Courtesy of WCS Usage Restrictions One-time usage only. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.