Catastrophic Population Declines and Extinctions in Neotropical Harlequin Frogs (Bufonidae: <i>Atelopus</i>)¹

ABSTRACT We surveyed the population status of the Neotropical toad genus Atelopus , and document recent catastrophic declines that are more severe than previously reported for any amphibian genus. Of 113 species that have been described or are candidates for description, data indicate that in 42 spe... View More