Seacliff Open Space Preserve (Preserve) is located in the City of Oceanside along the south side of the San Luis Rey River just west of Interstate 5 and east of the AT&SF Railroad tracks. The Preserve consists of approximately 2.87 acres of Diegan coastal sage scrub. The Preserve is part of the Biological Core and Linkage Area of the Multiple Habitat Conservation Program (MHCP) and is within the regional California gnatcatcher corridor of the proposed City of Oceanside Subarea Plan. San Diego Habitat Conservancy commenced active management of the site in 2015 following completion of a 5-year restoration program.

History: This open space preserve was required to be set aside as mitigation for construction of the Seacliff residential development project adjacent to the Preserve. This project directly impacted 0.87 acres of Diegan coastal sage scrub, requiring mitigation at a ratio of 3:1, i.e. the protection of a minimum of 2.61 acres of Diegan coastal sage scrub. The site underwent five years of restoration which included enhancement of existing Diegan coastal sage scrub as well as the creation of new Diegan coastal sage scrub.

Habitat: The Preserve consists of approximately 2.87 acres of Diegan coastal sage scrub (1.71 acres created, 1.16 acre enhanced.)

Management Duties: San Diego Habitat Conservancy monitors the Preserve on a monthly basis to observe and document substantial changes in the habitat composition and the need for remedial measures. Trash and non-native, invasive plant species are removed as necessary.

Species of Special Interest: San Diego ambrosia, San Diego marsh-elder, southwestern spiny rush, sticky dudleya,  yellow warbler.

Diegan Coastal Sage Scrub Habitat
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