Type: report

Article abstract: This baseline biological resource report has been prepared for the Dulzura parcels of the Otay Ranch Preserve, Assessor's Parcel Numbers 598-160-14, 647-050-04, 598-170- 40, and 647-060-01. The Otay Ranch Preserve is located in an unincorporated portion of southwestern San Diego County, east of the city of Chula Vista. RECON biologists conducted surveys to gather baseline biological information at the Dulzura parcels during the spring and summer of 2011. The surveys consisted of vegetation mapping and general plant and wildlife surveys. Sensitive species were observed incidentally, and suitable habitat for sensitive wildlife species was also evaluated during general surveys. Twelve vegetation communities were mapped in the Dulzura parcels during baseline surveys. Of these, 4 vegetation communities are considered Tier I Uncommon Uplands by the City of Chula Vista's Multiple Species Conservation Program Subarea Plan (MSCP). Within these vegetation communities, a total of 180 native plant species and 41 non-native plant species were observed. 20 of the native plant species are considered sensitive. Wildlife observed includes 25 invertebrate species, 1 amphibian species, 7 reptile species, 71 bird species, and 4 mammal species. Of these, 1 invertebrate species, 3 reptile species, 4 bird species, and 1 mammal species are considered sensitive. The baseline data gathered during these surveys will be used to guide future prioritization of preserve management actions. Future focused surveys for Quino checkerspot butterfly (Euphydryas editha quino), as well as permanent photo point monitoring, have been recommended as tasks for FY 2011-12 in the Draft FY 2011-12 Annual Work Plan for Conveyed Lands Managed by the Otay Ranch Preserve Owner/Manager.