Lake Acherito (image) Helmholtz Centre for Environmental Research - UFZ Caption Ibón Acherito in the Spanish Pyrenees. The researchers collected water samples there to better understand the current distribution of the pathogen Bd. The lake is on an altitude of about 1900 m in the Western Pyrenees and contains a large number of different amphibian species. Credit Dirk S. Schmeller/UFZ Usage Restrictions With credit. 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.