San Diego Management & Monitoring Program


Barnett Ranch Open Space Preserve Biological Resources Report

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Type: report

Article abstract: This biological resources report was prepared for the County of San Diego (County) in order to provide information on baseline biological conditions prior to the Cedar Fire of 2003 and to assist in the formation of Area Specific Management Directives (ASMDs) for the Barnett Ranch Open Space Preserve (Preserve) on the approximately 728-acre Barnett Ranch located in the unincorporated Ramona Community Planning Area of central San Diego County east of State Route (SR) 67 and south of SR 78. The project site supports 16 vegetation communities: southern coast live oak riparian forest, southern willow scrub, freshwater seep, riparian scrub, open water, open Engelmann oak woodland, coast live oak woodland, wildflower field, Diegan coastal sage scrub (including disturbed), coastal sage-chaparral scrub, southern mixed chaparral, non-native grassland, eucalyptus woodland, extensive agriculture, disturbed habitat, and developed land. No federally or state listed threatened or endangered plant species were observed on site; however, one plant species of federal special concern was observed: felt-leaved monardella (Monardella hypoleuca ssp. lanata). In addition, four plant species recognized as sensitive by the California Native Plant Society and/or the County were observed: delicate clarkia (Clarkia delicata), San Diego County viguiera (Viguiera laciniata), Engelmann oak (Quercus engelmannii), and ashy-spike moss (Selaginella cinerascens). No animal species listed as threatened or endangered by the U.S. Fish and Wildlife Service (USFWS) or California Department of Fish and Game were observed on the site; however, 10 animals observed on site are federal species of concern: orange-throated whiptail (Cnemidophorus hyperythrus beldingi), coastal whiptail (Cnemidophorus tigris stejnegeri), coastal rosy boa (Lichanura trivirgata roseofusca), southern California rufous-crowned sparrow (Aimophila ruficeps canescens), loggerhead shrike (Lanius ludovicianus), California thrasher (Toxostoma redivivum), white-tailed kite (Elanus leucurus), Costa's hummingbird (Calypte costae), lark sparrow (Chondestes grammacus), and Pacific slope flycatcher (Empidonax difficilis). Ten animals observed on site are California species of special concern: silvery legless lizard (Anniella pulchra pulchra), prairie falcon (Falco mexicanus), northern red-diamond rattlesnake (Crotalus exsul), golden eagle (Aquila chrysaetos), Cooper's hawk (Accipiter cooperi), sharpshinned

Number of pages: 123

Day: 30

Month: January

Year: 2004

Prepared for: County of San Diego, Department of Parks and Recreation;

Prepared by: Helix Environmental Planning, Inc.;

Keywords: ASMD; Barnett Ranch; bird point counts; federal Species of Concern; herpetofauna pitfall arrays; MSCP; sensitive plants; species of concern;

Species: Southern California rufous-crowned sparrow; Engelmann Oak; Felt-leaved monardella; Quino checkerspot butterfly; Orange-throated whiptail; Coastal California gnatcatcher

Vegetation communities: coastal sage scrub; chaparral; riparian forest & scrub