Piro BioStation is the field headquarters for Osa Conservation (OC), an NGO founded in 2003 in the United States that is dedicated to protecting biodiversity of the Osa Peninsula. OC achieves this primarily by creating and maintaining biological corridors, restoring damaged and degraded forest areas, and monitoring threatened species.
National Geographic magazine has coined the Osa as “the most biologically intense place on earth.” The peninsula is relatively small, covering ~700 square miles and was once isolated from mainland Costa Rica, which explains the high level of observed endemism. It also among the last places in Costa Rica to be settled, and therefore retains almost all of its virgin forest cover.
Dominant habitat types in the Osa include wetlands, mangroves, primary forest, secondary forest, and also a thriving marine system. These habitats combined support more than 4,000 vascular plants, 10,000 insects, 700 species of trees, 140 mammals (including dolphins and whales), 4 species of turtle.