Due to so many efforts in the past to capitalize on the island, many invasive flora and fauna were introduced. The Conservancy removes invasive plants to protect and restore the Island. The Conservancy's Catalina Habitat Improvement and Restoration Program (CHIRP) is designed to ensure long-term conservation of species richness and habitat integrity in one of the world's biodiversity hot spots. Three species of highly invasive plants have been nearly eradicated from the Island: tamarisk, pampas grass and fig. CHIRP has targeted 27 other species for eradication and another 36 to be managed to limit their presence on the Island.