Image of the Eleutherodactylus juanariveroi Frog (image) PeerJ Share Print E-Mail Caption This is an image of the Eleutherodactylus juanariveroi frog, which was used by the study to investigate species variability over time. This species showed a significant decline in calling activity over four years, but in the fifth year the calling rate recovered to the original level. Credit CoquiPR.com Usage Restrictions None Share Print E-Mail 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.