This is a continuation of a 2012 CREOi-funded project. The Somuncura Plateau (Patagonia, Argentina) is a global priority conservation area. Three endemic and threatened species live in this ecosystem: the Laguna Raimunda frog (Atelognathus reverberii), Valcheta frog (Pleurodema somuncurensis) and naked characin (Gymnocharacinus bergii). The objective of this project was to improve conservation of these three species and their habitats. Researchers carried out diverse studies on distributional range, population size, survival and the effects of some specific threats on these species.
For the El Rincon stream frog and naked characin, density was high in places but patchy along the length of Arroyo Valcheta, the only stream on the plateau. Distribution modeling for the Somuncura frog predicted presence on the entire plateau, though dispersed in association with the main water bodies. The chytrid fungus (Batrachochytrium dendrobatidis) that threatens frog species globally was found widely distributed throughout the plateau, at high density and infecting both species of frogs. There appeared to be local effects of introduced trout on distribution of the naked characin in Arroyo Valcheta.
The project also included outreach and education oriented towards generating local and national awareness of these issues to build broad support for protection of these species. Using results from the studies, permanent exhibits on the biodiversity and conservation of the Somuncura Plateau were developed and installed at the La Plata and Valcheta Natural History Museums. A variety of educational and multidisciplinary workshops were also carried out with diverse audiences. One of these workshops, with the Ministry of the Environment and Sustainable Development, led to the new assignment of four park rangers to the Somuncura Plateau. ($6,770)