Barrett A. Garrison, Resource Assessment Program, California Department of Fish and Game, North Central Region 20070616 Version 1 vector digital data ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/300_399/ds323.zip http://bios.dfg.ca.gov These data are detections of reptiles in 2005 from visual encounter searches of an area constrained to a 100-m radius circle around each of 15 fixed sample points at Spears and Didion Ranches, Placer County, California. Surveys were done three times in April and May by trained observers who searched the entire 100-m radius (3.1 ha) circular plot looking on and under rocks, logs, and debris for reptiles and amphibians. Fifty-eight detections were made of five species of reptiles and one species of amphibian. These data are intended to represent baseline data for wildlife communities and habitat conditions in these parks. They can be used to assess and monitor the park's ecological viability and sustainability. Methods Single or multiple observers conducted surveys for reptiles and amphibians of all of each 7.8-acre circular plot where point counts were done for breeding landbirds. Observers completely surveyed the entire plot (within 100-m radius from point count station) while focusing their searches around key habitat elements where reptiles and amphibians are most likely to be found. Survey duration for the entire plot depended on habitat complexity. Observers began their area-constrained searches (ACS) after landbird point counts were done. This saved on travel time and ensured that searches were conducted during the late morning and early afternoon hours when these animals were more active. Two ACS's were conducted at each sample point count location with single visits during two time periods: (1) between late March and April; and (2) between late April and early May. Observers tried to complete an ACS in 1 visit; multiple observers could be used but the total ACS area for the combined observers had to be the entire 7.8-acre (100-m radius) circular plot. Habitat elements likely to support reptiles and amphibians include rocks, logs, talus, cliffs, building debris, wetlands, shorelines of rivers and streams, and shallow water areas. Observers were encouraged to concentrate their searches on, in, and under these elements and search them thoroughly. Logs, rocks, and debris, if turned over, were be returned to their original positions. Observers also searched open grassy areas, bare soil, and trees for reptiles and amphibians when walking to various habitat elements found in the plot. Reference: Garrison, B. May 2005. Field and Data Recording Protocols for Area-Constrained Searches of Reptiles and Amphibians at Spears Ranch. Resources Assessment Program, North Central Region, Calilfornia Department of Fish and Game, Rancho Cordova, CA. 3pp. + field data form. This report can be accessed at https://nrmsecure.dfg.ca.gov/documents/ContextDocs.aspx?cat=BIOS&sub=ds323 . 20070616 publication date Complete As needed -121.207941 -121.166096 38.975614 38.959015 None reptile Placer Legacy Program amphibian constrained sample area ISO 19115 Topic Category biota environment None California Didion Ranch Placer County Sierra Nevada foothills Spears Ranch Coon Creek Public use. These data can be used without constraints. Resource Assessment Program, California Department of Fish and Game, North Central Region Barrett A. Garrison Staff Environmental Scientist mailing

North Central Region

California Department of Fish and Game

1701 Nimbus Road

Rancho Cordova CA 95670 (916) 358-2945 (916) 358-2912 bgarrison@dfg.ca.gov Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959 It is assumed that the locations of the survey points are accurate with regard to the actual locations on the ground where the surveys were done. It is assumed that these species were accurately identified by vocalization and/or visually, and that they were counted accurately. Also, the spatial accuracy of the location of the detected animals in the 100-m count circle radius is presumably accurate to +- 5 m because distances were measured with laser rangefinders and compasses. All data are complete. Data from the sample points were gathered in the field using global positioning system units and then uploaded to Arc View 3.2 California Department of Fish and Game Barrett A. Garrison bgarrison@dfg.ca.gov Data were gathered in the field, entered into SYSTAT statistical software as raw field data from the counts, and then an Excel file was created with the summary statistics for detection rates and the average number of individuals per count. California Department of Fish and Game Barrett A. Garrison bgarrison@dfg.ca.gov Vector Entity point 15 Custom 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 ds323 FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. LATDD Latitude of sample point in NAD83. LONDD Longitude of sample point in NAD83. POINT Number of the sample point within the parks. ds323_EX1 OID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. COM_NAME Common name of detected species SCI_NAME Scientific name of detected species NUM_INDIV Number of animals detected at the sample point AGE Age of detected animal DATE_SURV Date of reptile and amphibian surveys TIME_DETEC Time of detection using 24-hour clock TEMP_F Temperature (degrees F) at detection HABITAT Habitat type in CWHR habitat classification system at location where animal detected Mayer and Laudenslayer, 1988; http://www.dfg.ca.gov/bdb/html/wildlife_habitats.html SAMPLE_PT Sample point identification number; matches sample point identification numbers in shapefile. DISTANCE_M Distance (m) from sample point to location where animal found BEARING Bearing (in degrees) from sample point to where animal detected These 15 points occur in oak woodland habitat of Spears and Didion Ranch parks in Placer County, California. The sample points were the centers of locations where reptile and amphibian surveys were conducted in 2005. Biogeographic Data Branch, California Department of Fish and Game Gordon Gould mailing

California Department of Fish and Game

1416 Ninth St., 12th floor

Sacramento CA 95814 ggould@dfg.ca.gov Neither the State of California nor the California Department of Fish and Game warrant the correctness or accuracy of the observation data presented in here. They are used at the user's own risk. Contact Distributor 1-2 weeks 20160229 Resource Assessment Program, California Department of Fish and Game, North Central Region Barrett A. Garrison mailing

North Central Region

California Department of Fish and Game

1701 Nimbus Road

Rancho Cordova CA REQUI95670 (916) 358-2945 (916) 358-2945 bgarrison@dfg.ca.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time