https://phys.org/news/2018-07-amphibians-brazilian-forest.html

"This research provides a roadmap to determine the best locations for future surveys and help assess where to prioritize conservation efforts in human-modified landscapes," said José Wagner Ribeiro Jr., former Michigan State University visiting student now a Sao Paulo State University (Brazil) ecologist, who led the research. "Our results, combined with land use and topographic maps, can be used to make predictions of amphibian distributions even beyond our study area."

The study took place in the Atlantic Forest in southeastern Brazil. This region harbors great diversity of amphibians. Most of them, including many frogs, are native to that region. The study location was chosen, in part, because 85 percent of the original forest has been lost, and less than 10 percent of the remnant forest is protected.