Chris Stermer, California Department of Fish and Game, Resource Assessment Program David Burton, Aspen Delineation Project Chief Investigator 20060601 1 vector digital data When possible reference the specific Agency, Researcher, or Project responsible for collecting the data used. https://wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/300_399/ds362.zip The database represents delineations of aspen stands, where aspen assessment data was gathered. Aspen assessment information corresponding to this polygon layer can be found in the layer: ADP_POINT. Data collection occurred in the Lake Tahoe Basin Management Unit (Placer and Eldorado Counties); Alturas Field Office-BLM (Modoc County); California Tahoe Conservancy (Placer and Eldorado Counties), the Stanislaus National Forest (Tuolumne County); Humboldt-Toiyabe National Forest(Alpine County); and Tahoe National Forest (Nevada and Sierra Counties); and the California Department of Fish and Game (Modoc County). This is a multi-agency contributed dataset gathered by the agencies listed above during the summers of 2001-2005. Assessment data and GIS delineations were collected using a standardized protocol developed by members of the Aspen Delineation Project, a cooperative project of the US Forest Service, the Bureau of Land Management and the California Department of Fish and Game. Surveying was completed by foot surveys of watersheds surveyed. This is the current completed data set for aspen distribution of land administered by these agencies. Data captures location of aspen stands and vegetative characteristics of the aspen stand, and if browsing of the aspen was present or absent. Also associated with this database is a point layer (ADP_POINT) containing aspen stands delineated in conjunction with the aspen assessment information. Data Compilation: The Aspen Delineation Project (ADP) is a collaborative effort of the U.S. Forest Service's Pacific Southwest Region, the California Department of Fish and Games Resource Assessment Program, and the California Office of Bureau of Land Management. Principal Investigator for ADP is David Burton; visit: www.aspensite.org for more information regarding the ADP. The Department of Fish and Games, Resource Assessment Program compiled this information from the collaborating agencies and other researchers, and formatted the data into a common database for the purpose of facilitating access to data related to the conservation of Quaking Aspen in California. This information portal falls within the ADP goals to help agencies and land managers identify, map, treat, and monitor aspen habitats. This dataset is a portion of a master database compiled during a year long effort in 2005 to pull together current GIS layers and maps depicting Aspen communities in California. The database contains location information and assessments conducted in aspen stands in the National Forest, BLM, and California Tahoe Conservancy lands. Assessment information identifies the ecological condition of stands using a protocol developed by the Aspen Delineation Project collaborators. -120.652053 -119.854859 39.628920 37.990942 ISO 19115 Topic Category biota environment None Populus tremuloides Quaking aspen None Eldorado County BLM-Surprise Field Office Humboldt-Toiyabe National Forest Placer County Tuolumne County Stanislaus National Forest Alpine County Tahoe National Forest California Lake Tahoe Basin Management Unit Modoc County None Post 2000 No constraints, public data Recognition that this data set was created by California Department of Fish and Game from information provided by agencies across California.License: This work is licensed under Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). Using the citation standards recommended for BIOS datasets (https://www.wildlife.ca.gov/Data/BIOS/Citing-BIOS) satisfies the attribution requirements of this license.Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data. mailing (209) 965-3434 arich@fs.fed.us mailing (530) 233-4666 pschmidt@ca.blm.gov mailing (775) 884-8151 measton@fs.fed.us mailing (530) 543-2600  vlyon@fs.fed.us mailing (530) 478-6240 tmark@fs.fed.us Aspen Delineation Project David Burton (and multiple individuals and agencies) mailing

2070 Orange Dr.

916 663-2574 peregrines@prodigy.net mailing (916) 445-2626 cstermer@dfg.ca.gov mailing (530) 543-6064 rrobinson@tahoecons.ca.gov http://www.dfg.ca.gov/habitats/rap/projects/aspen/maps/state/map.aspx?id=ca Images JPG Compilation of multiple agencies. NA NA Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 Significant general assumptions of the data are: 1) the protocol produces qualitative assessment information and is limited to the protocol use. (2) GPS reading provide are for general geo-referencing, LTBMU, Tahoe National Forest, Humboldt-Toiyabe National Forest, and BLM-Alturas F.O. location information was gathered using hand held GPS units using NAD 27 datum using a waypoint method. (i.e. The waypoint method creates simple, rectangular polygons using a set of approximately three to twenty GPS points (waypoints) collected in selected areas along the edge of the aspen stand). The Stanislaus National Forest, Department of Fish and Game, and CTC collected data using the GPS track method (I.E. The track method creates smooth polygons from a continuous GPS collection (a track) along the entire perimeter of the aspen stand. Half of the LTBMU data was collected using the waypoint method the other half was used using the track method. Known caveats of the data: Caveats include: 1) the accuracy of the points representing the stand are limited by the quality of the GPS unit (2) Polygons layers for LTBMU(approx.half of data set), Tahoe National Forest, Humboldt-Toiyabe National Forest, and BLM-Alturas F.O. were created using limited # of points, field notes, and maps (waypoint method). Some assessments were incomplete because stands were not physically accessible. Original location information was gathered using GPS units using NAD 27 datum. LTBMU, Tahoe National Forest, Humboldt-Toiyabe National Forest, BLM-Alturas F.O. and half of LTBMU location information was gathered using hand held GPS units using NAD 27 datum using a waypoint method. (i.e. The waypoint method creates simple, rectangular polygons using a set of approximately three to twenty GPS points (waypoints) collected in selected areas along the edge of the aspen stand). The Stanislaus National Forest, Department of Fish and Game, CTC, and the other half of the LTBMU, collected data using the GPS track method (i.e. The track method creates smooth polygons from a continuous GPS collection (a track) along the entire perimeter of the aspen stand.) Received data from Field Collection locations and Merged data into master aspen data set for California Department of Fish and Game 20060101 Aspen Delineation Project David Burton Director 916-663-2574 peregrines@prodigy.net Edited original metadata by adding ISO keywords. 20071206 California Department of Fish and Game Kristina White bios@dfg.ca.gov Vector GT-polygon composed of chains 613 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.0001 0.0001 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds362 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. KEY_CODE Unique Aspen Stand identifier. The letter is the code for the data source name and the number is an auto-number. CDFG UNQ_ASP_ID A combination of the Unique Aspen Stand identifier and the date of the data collection or 00/00/YYYY. ADP SOURCE_NM Name of the data source. CDFG ADP, Tahoe NF, Truckee Name for Source "A" ADP, Lake Tahoe Basin Management Unit Name for Source "B" ADP, Tahoe NF Name for Source "E" ADP, BLM, Alturas Name for Source "I" ADP, Stanislaus NF Name for Source "S" ADP, CA Tahoe Conservancy Name for Source "T" Shape_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. Shape_Area Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. Aspen Delineation Project Aspen Delineation Project Director mailing

2070 Orange Drive

Penryn CA 95773 US 916-663-2574 916-663-4054 peregrines@prodigy.net Neither the State of California, California Department of Fish and Game, nor the Aspen Delineation Project warrants the correctness or accuracy of the data presented here. They are used at the user's own risk. 20231027 2007 California Department of Fish and Games, Resource Assessment Program Chris Stermer Program Director mailing

1812 Ninth Street

Sacramento California 95814 US (916) 445-2626 cstermer@dfg.ca.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time