Nature Reserve of Orange County 20080101 vector digital data http://bios.dfg.ca.gov ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/400_499/ds430.zip The Nature Reserve of Orange County (NROC) is an open space network within the central and coastal Orange County NCCP/ HCP area, which supports roughly 4,000 hectares (9,884 acres) of coastal sage scrub (CSS) habitat. A target bird monitoring study was developed by the reserve's Technical Advisory Committee (TAC) and a biometrician in consultation with the US Fish and Wildlife Service and the California Department of Fish and Game. The goal of the study is to monitor California Gnatcatcher and Cactus Wren populations (target species of the NCCP) and determine whether the NCCP/HCP has been successful in conserving the species. These data will also establish a baseline for future research in order to track long-term changes in the populations of these two species and will help guide NROC adaptive management activities. This data layer represents the locations of California Gnatcatcher and Cactus Wren sightings within reserve lands from 1999-2004. Portions of NROC lands containing over 50% CSS were partitioned into potential monitoring sites of approximately 20 ha (49 acres) by an Orange County GIS Analyst. TAC staff used a random number generator to select 20 sites within the central reserve and 20 sites within the coastal reserve as monitoring locations. These sites were further stratified to represent "reserve core", "reserve edge", and "reserve fragment" habitats (Hamilton 2003a). Surveys were conducted by walking slowly through monitoring locations and pausing at intervals to play tapes of the California Gnatcatcher and Cactus Wren and then watching and listening for responses. Locations of all target bird sightings were mapped and information on gender and group size was noted when possible, along with vegetative composition of occupied habitats. Presence of Brown-headed cowbirds, which are known to parasitize nests of California Gnatcatcher, was also recorded. Habitat-related vegetation parameters of occupied territories, such as dominant plant species, were also recorded and are available upon request. In 1999, all 40 sites were visited once from February 1 - May 31. In 2000, 16 sites were visited once and 24 sites were randomly selected to be visited three times from March 15 - June 30. In 2001, all 40 sites were visited twice and 24 sites (same sites as in 2000) were visited three times, also from March 15 - June 30. From 2002-2004, site monitoring was the same with minor changes to 4 sites and was conducted from March 1 - June 30. See Hamilton 2003a, 2003b, 2003c, and 2004 for further discussion of site establishment and monitoring study protocols. The purpose of the target bird study is to collect standardized data on the numbers of California Gnatcatcher and Cactus Wren occupying coastal sage scrub habitat within the NROC reserve lands in order to track population trends for these species (Hamilton 2003a). DATA COMPILATION HISTORY: These data were collected by consulting biologist and NROC Technical Advisory Committee member Robert A. Hamilton and by Mike San Miguel, who both held federal permits to survey for California Gnatcatcher at the time of the surveys. Target bird study data was input into a MS Access database maintained by NROC staff and the GIS data was input into a GIS database maintained by staff from the County of Orange Geographic Information Systems Section. Spatial data were compiled and a spatial layer was developed as part of the Southern California Data Integration Project. SPATIAL DATA CAPTURE METHODS: Spatial data were collected using handheld GPS units and projected in NAD 1983. REFERENCES: Hamilton, R. A. 2003a. Target bird monitoring study, Nature Reserve of Orange County Combined Report, 1999-2001. Prepared for The Nature Reserve of Orange County, March 2003. Hamilton, R. A. 2003b. Target bird monitoring study, Nature Reserve of Orange County, 2002. Prepared for The Nature Reserve of Orange County, March 2003. Hamilton, R. A. 2003c. Target bird monitoring study, Nature Reserve of Orange County, 2003. Prepared for The Nature Reserve of Orange County, December 2003. Hamilton, R. A. 2004. Target bird monitoring study, Nature Reserve of Orange County, 2004. Prepared for The Nature Reserve of Orange County, November 2004. 19990101 20040101 ground condition Complete As needed -117.858054 -117.634362 33.844874 33.551806 None Natural Community Conservation Plan Habitat Conservation Plan coastal sage scrub Cactus Wren California Gnatcatcher ISO 19115 Topic Category environment biota None Orange County California None Site appropriately Nature Reserve of Orange County Lyn McAfee Executive Director mailing

15600 Sand Canyon Avenue

Irvine CA 92618 (949) 453-3324 naturereserveOC@aol.com Nature Reserve of Orange County Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959 GPS location data were collected by hand-help GPS units. GPS data are stored in a database maintained by the County of Orange Resources and Management Development Department GIS Section. Locations data were provided either in the form of an MS Excel file or as a shapefile and were imported into ArcMap to create the associated shapefile. US Fish and Wildlife Service Elise Watson GIS Analyst mailing and physical

6010 Hidden Valley Road

Carlsbad CA 92009 (760) 431-9440 X348 elise_watson@fws.gov Edited original metadata by adding ISO keywords. Reprojected data into California Teale Albers NAD83. 20080801 California Department of Fish and Game Greg Ewing bios@dfg.ca.gov Vector Entity point 2314 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.000000003754707655900803 0.000000003754707655900803 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds430 Observations of California Gnatcatcher and Cactus Wren on NROC lands from 1999 to 2004 FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. SITE_NUM Numerical ID of target bird study site SITE_NAME Name of target bird location in reserve lands CNAME Common Name SNAME Scientific Name SPECCODE Species Code RESRV_TYPE Habitat designation within reserve subregion: core, edge or fragment BIRD_ID Identification number assigned to birds observed in study SUB_AREA Subregion of reserve: coastal or central DATE_ 20160302 US Fish and Wildlife Service Elise Watson GIS Analyst mailing and physical

6010 Hidden Valley Road

US Fish and Wildlife Service

Carlsbad Field Office

Carlsbad CA 92011 (760) 431.9440 x348 elise_watson@fws.gov M - F 8-5 FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time