20th Anniversary Program Spotlight: Habitat Restoration and Enhancement

Southern California’s wildlands are home to tens of thousands of acres of rare and diverse plant and animal communities in close proximity to urban development. Some of this land was degraded because of past agricultural land use, the spread of non-native invasive plants, and the devastating effects of too frequent wildfires. Irvine Ranch Conservancy (IRC) was founded 20 years ago to help protect, restore and enhance open space in Southern California with a holistic land management approach.  

The Habitat Restoration and Enhancement team restores appropriate native habitats to these degraded areas to improve their diversity, resilience, and connectivity across the landscape. Working with partner organizations and volunteers, expert IRC staff have carried out large-scale restoration projects and smaller enhancement efforts using innovative methods tailored to local conditions and based on the latest science.

“IRC is recognized for our commitment to quality restoration as part of our mission and as an effective and reliable partner to manage complex restoration projects,” says Robert Freese, Program Manager (Restoration and Enhancement). “It is exciting to collaborate with a wide range of partners, internal and external to IRC, which enables our team to grow in our capabilities and resourcefulness.”

Over the last two decades, IRC has initiated important restoration projects with different objectives, landowners, funding sources, and partner organizations. Many of these projects can take up to 10 years to complete, with 3 to 4 years dedicated to site preparation, and another 4 to 5 years dedicated to maintenance. Monitoring and adaptive management are an ongoing part of the restoration process needed to ensure success.  The first of these projects was the Bee Flat Canyon restoration located in OC Parks’ Limestone Canyon. IRC worked in collaboration with the Orange County Transportation Authority (OCTA), which provided funding, and in coordination with OC Parks to restore a degraded portion of Limestone Canyon to appropriate habitat types, including coastal sage scrub, grassland, and oak savannah plant communities. This project improved habitat quality for wildlife, expanded wildlife movement corridors, and managed target invasive weeds throughout the watershed. 

Through the efforts of the Habitat Restoration and Enhancement program, IRC has restored hundreds of acres of degraded habitat, allowing for native wildlife to thrive including sensitive species like the Western Spadefoot Toad, Coastal Cactus Wren, Least Bell’s Vireo, and California Gnatcatcher. 

“I am always impressed with the number of projects IRC is capable of undertaking. The reach of our program goes far beyond the Landmarks as we are now working with various state, county and other agencies to help manage their open space lands,” adds Freese. “From restoring hydrologic processes at Trabuco Creek to introducing rare plant species at Crystal Cove State Park to establishing breeding pools for Western Spadefoot at Shoestring Canyon, we are doing things now that we would not have tried to tackle in the past, just proving how much we have learned and grown as an organization.”

Now, IRC is expanding outside of the Irvine Ranch Natural Landmarks with restoration projects in Chino Hills State Park and other places throughout Orange County and beyond. In the next 20 years, IRC hopes to continue to foster and lead a community of stewardship in Orange County, remain adaptable to the needs of the land, explore new and creative ways of working while preparing the next generation of land stewards to carry the legacy forward. 

Stay tuned this year for more ways to help celebrate 20 years of stewardship with IRC!