Jason Schwenkler, Geographical Information Center, Director 20210203 vector digital data https://ftp.wildlife.ca.gov/BDB/GIS/BIOS/Public_Datasets/2900_2999/ds2910.zip Creation date is based on the age of the NAIP imagery that serves as the base. https://ftp.wildlife.ca.gov/BDB/GIS/BIOS/Public_Datasets/2900_2999/ds2910.zip https://www.wildlife.ca.gov/Data/BIOS CSU Chicos Geographical Information Center (GIC), with assistance from CDFWs Vegetation Classification and Mapping Program (VegCAMP) created a fine-scale vegetation and land use map of portions of the Modoc Plateau in California. The map follows the National Vegetation Mapping Classification standards as well A Manual of California Vegetation and covers the eco-region subsections Devils Garden and Adin Mountains. This map covers approximately 855,998 acres in Lassen and Modoc Counties. It was produced using a base of true-color 2018 one-meter National Agricultural Imagery Program (NAIP) imagery. Polygons were assessed for vegetation types, percent covers, clearing disturbance, invasive plant cover and other attributes. Overall fuzzy map accuracy was 81.6%, but individual vegetation types varied in their accuracy. Please see the mapping report and the contingency tables for details to determine confidence in individual types.For detailed information please refer to the following reports: Boul, R., T. Keeler-Wolf, J. Ratchford, T. Haynes, D. Hickson, R. Yacoub, B. Harbert, J. Evens. 2021. Classification of the Vegetation of Modoc and Lassen Counties, California. Vegetation Classification and Mapping Program, California Department of Fish and Wildlife, Sacramento, CA ; https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=183030Kreb, Brian and Geographical Information Center, California State University, Chico. Mapping Standards, Field Data Collection, and Accuracy Assessment for Vegetation Mapping in Modoc and Lassen Counties, California. Califoria Department of Fish and Wildlife; 2/1/2021. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 Documentation of vegetation communities with related structural and disturbance data for the Modoc Plateau. Complete None planned -121.333218 -120.268521 41.907494 40.897574 ISO 19115 Topic Categories biota environment None vegetation Modoc Plateau California biota environment National Vegetation Classification Standard A Manual of California Vegetation California Wildlife Habitat Relationships Modoc County Lassen County None CDFW appreciates learning how our datasets are being used so that we can leverage support for classifying and mapping new areas and let users know of any updates. Please contact Rachelle Boul by email VegCAMP@wildlife.ca.gov or by phone at (916) 324-9765.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.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. California Dept. of Fish and Wildlife, Vegetation Classification and Mapping Program Rachelle Boul Senior Ecologist unknown

1807 13th Street, Suite 202

Sacramento CA 95811 (916) 324-9765 VegCAMP@wildlife.ca.gov Geographical Information Center Jason Schwenkler Director jschwenkler@csuchico.edu California Dept. of Fish and Wildlife, Vegetation Classification and Mapping Program Rachelle Boul Senior Ecologist VegCAMP@wildlife.ca.gov California Department of Fish and Wildlife, Vegetation Classification and Mapping Program Rachelle Boul Lead Ecologist VegCAMP@wildlife.ca.gov Data was produced by CSU Chico's Geographic Information Center with support from CDFW's Biogeographic Data Branch. Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.1.7333 Vector GT-polygon composed of chains 35767 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 ModocPlateauVegetation_DevilsGarden_BIOS_ftp OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features. NVCSName The standardized name of the vegetation description used National Vegetation Classification System (see http://usnvc.org/) or submitted to the regional editors for induction. Names will be the same as ones used in the Manual of California Vegetation (https://vegetation.cnps.org/) and California Natural Community List (https://wildlife.ca.gov/Data/VegCAMP/Natural-Communities). Classes for human land use or otherwise unvegetated land were drawn from the California Wildlife Habitat Relationship. https://vegetation.cnps.org/ NVCSLevel The standardized level of the vegetation description used in the 2019 National Vegetation Classification System (see http://usnvc.org/). http://usnvc.org MapClass The finest level of vegetation type mapped (alliance, association, group or macrogroup); or descriptions for polygons that are not natural vegetation per the mapping classification, including land use and natural barrens or water features. Map classes are described in the mapping report by GIC. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 MapClassCode The code for a vegetation association, alliance, group, unvegetated type, or land use for polygons that are not natural vegetation, as defined by Aerial Information Systems. Codes were used by CDFW to standardize names between datasets produced in the Modoc Plateau: MapClassCode MapClass 11110 Abies concolor Alliance 11111 Abies concolor - Pinus ponderosa / Amelanchier alnifolia Association 12110 Populus tremuloides Alliance 13110 Populus trichocarpa Alliance 14111 Pinus ponderosa - Juniperus occidentalis / Artemisia tridentata - Purshia tridentata Association 14112 Pinus (jeffreyi, ponderosa) / (Ceanothus prostratus - Purshia tridentata) Association 14120 Pinus ponderosa / Shrub Understory Alliance 15110 Pinus ponderosa - Calocedrus decurrens - Pseudotsuga menziesii Alliance 15111 Pinus ponderosa - Calocedrus decurrens / Ceanothus prostratus Association 15123 Pinus ponderosa / Arctostaphylos patula - Purshia tridentata Association 15124 Pinus jeffreyi / Artemisia tridentata ssp. vaseyana / Festuca idahoensis Association 16110 Juniperus occidentalis Alliance 16115 Juniperus occidentalis / (Poa secunda - Festuca idahoensis - Pseudoroegneria spicata) Association 16117 Juniperus occidentalis - (Pinus jeffreyi - Pinus ponderosa) / Cercocarpus ledifolius Association 16118 Juniperus occidentalis / Artemisia arbuscula / Poa secunda Association 16119 Juniperus occidentalis / Artemisia tridentata - Purshia tridentata Association 16210 Cercocarpus ledifolius Alliance 16211 Cercocarpus ledifolius - Artemisia tridentata ssp. vaseyana Association 16212 Cercocarpus ledifolius Association 18110 Quercus kelloggii Alliance 21321 Elymus elymoides Provisional Association 22110 Ericameria nauseosa Alliance 22111 Ericameria nauseosa Association 22112 Ericameria nauseosa / Bromus tectorum Association 22120 Bromus tectorum - Elymus caput-medusae Alliance 22121 Bromus tectorum Association 22122 Elymus caput-medusae Provisional Association 22210 Artemisia arbuscula Alliance 22213 Artemisia arbuscula / Bromus spp. - Elymus caput-medusae Association 22214 Artemisia arbuscula - Eriogonum (microthecum, sphaerocephalum) Association 22230 Eriogonum spp. / Poa secunda Alliance 22231 Eriogonum sphaerocephalum / Poa secunda Association 22310 Artemisia tridentata Alliance 22313 Artemisia tridentata Association 22317 Artemisia tridentata - (Ericameria nauseosa) / Bromus tectorum Association 22320 Artemisia tridentata ssp. vaseyana Alliance 22321 Artemisia tridentata ssp. vaseyana - Symphoricarpos oreophilus / Bromus carinatus Association 22322 Symphoricarpos oreophilus Association 22323 Artemisia tridentata ssp. vaseyana / Festuca idahoensis Association 22330 Purshia tridentata - Artemisia tridentata Alliance 22335 Purshia tridentata - Artemisia tridentata Association 22336 Tetradymia canescens Provisional Association 24111 Chrysothamnus viscidiflorus Association 31110 Ceanothus velutinus Alliance 31111 Ceanothus velutinus Association 31120 Prunus emarginata - Holodiscus discolor Alliance 31121 Prunus emarginata Association 31122 Holodiscus discolor Association 31123 Ribes velutinum Provisional Association 31130 Arctostaphylos patula - Arctostaphylos nevadensis Alliance 31131 Arctostaphylos patula Association 31132 Arctostaphylos patula - Ceanothus velutinus Association 31140 Amelanchier utahensis - Cercocarpus montanus - Cercocarpus intricatus Alliance 31141 Amelanchier utahensis Association 31150 Chrysolepis sempervirens Alliance 31151 Chrysolepis sempervirens Association 32110 Festuca idahoensis - Pseudoroegneria spicata - Poa secunda Alliance 32111 Pseudoroegneria spicata - Poa secunda Association 32112 Festuca idahoensis - Pseudoroegneria spicata Association 32121 Elymus smithii Association 33100 Californian Ruderal Grassland, Meadow and Scrub Group 34100 Californian Annual Grassland and Forb Meadow Group 41110 Artemisia cana Alliance 41111 Artemisia cana (ssp. bolanderi, ssp. viscidula) / Poa secunda Association 41120 Salix exigua Alliance 41130 Prunus virginiana Alliance 41131 Prunus virginiana / Symphoricarpos rotundifolius Association 41132 Prunus subcordata Provisional Association 41300 Vancouverian - Rocky Mountain Montane Wet Meadow and Marsh Group 41370 Juncus balticus - Juncus mexicanus Alliance 41371 Juncus arcticus var. balticus - (var. mexicanus) Association 41380 Poa secunda - Muhlenbergia richardsonis - Carex douglasii Alliance 41382 Taraxia tanacetifolia - Iva axillaris Provisional Association 41441 Hordeum brachyantherum Association 42211 Carex praegracilis Association 43110 Salix lasiolepis Alliance 43111 Salix lasiolepis - Rosa woodsii / Mixed Herbs Association 43120 Salix boothii - Salix geyeriana - Salix lutea Alliance 43121 Salix lucida / Poa pratensis Association 43130 Cornus sericea - Rosa woodsii - Ribes spp. Alliance 43132 Rosa woodsii Association 44100 Californian Vernal Pool Group 44110 Eleocharis (acicularis, macrostachya) Alliance 44200 Oregon-Washington-British Columbia Vernal Pool Group 44210 Navarretia leucocephala ssp. minima - Plagiobothrys cusickii Alliance 45111 Typha domingensis Association 45120 Schoenoplectus americanus Alliance 46100 Western North American Ruderal Marsh, Wet Meadow and Shrubland Group 46111 Phalaris arundinacea Association 46120 Poa pratensis - Agrostis gigantea - Agrostis stolonifera Alliance 46130 Agropyron cristatum Semi-natural Stands 48110 Distichlis spicata Alliance 48121 Elymus cinereus Association 48122 Elymus triticoides - Poa secunda Association 61100 Columbia Plateau cliff, scree and rock mapping unit 61200 Western North American Sparsely Vegetated Rivershore mapping unit 92200 Non - woody Row and Field Agriculture 92300 Irrigated Pastures 93000 Built - up and Urban Disturbance 93200 Anthropogenic Areas of Little or No Vegetation 95000 Planted Trees and Shrubs 97010 Sparsely Vegetated Recently Burned Areas 98000 Water 98010 Perennial Stream Channel (Open Water) 98030 Small Earthen - dammed Ponds and Natural Lakes 98050 Water Impoundment Feature PER_CONIFE Percent cover of conifer trees, in 1% increments. Mapping Standards, Field Data Collection, and Accuracy Assessment for Vegetation Mapping in Modoc and Lassen Counties, California. Geographic Information Center; 2/1/2021. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 PER_HARDWO Percent cover of hardwood trees, in 1% increments. Mapping Standards, Field Data Collection, and Accuracy Assessment for Vegetation Mapping in Modoc and Lassen Counties, California. Geographic Information Center; 2/1/2021. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 PER_TREE Total percent cover of trees, in 1% increments. Mapping Standards, Field Data Collection, and Accuracy Assessment for Vegetation Mapping in Modoc and Lassen Counties, California. Geographic Information Center; 2/1/2021. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 PER_SHRUB Percent cover of shrubs, in 1% increments. Mapping Standards, Field Data Collection, and Accuracy Assessment for Vegetation Mapping in Modoc and Lassen Counties, California. Geographic Information Center; 2/1/2021. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 HERB_CLASS PER_TOTAL Estimated total cover in 1% increments. Mapping Standards, Field Data Collection, and Accuracy Assessment for Vegetation Mapping in Modoc and Lassen Counties, California. Geographic Information Center; 2/1/2021. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 INVASIVE_P General levels of presence of exotic plants in stand Mapping Standards, Field Data Collection, and Accuracy Assessment for Vegetation Mapping in Modoc and Lassen Counties, California. Geographic Information Center; 2/1/2021. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 0 None visible 1 Visible patches, not significant, relative cover <33% 2 Significant cover, relative cover 33-66% 3 Stand characterized by exotics, relative cover>66% 9 Not applicable / Not evaluated ROADEDNESS Amount of polygon affected by paved or unpaved roads or trails. Mapping Standards, Field Data Collection, and Accuracy Assessment for Vegetation Mapping in Modoc and Lassen Counties, California. Geographic Information Center; 2/1/2021. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 0 None Visible 1 Low (at least 67% of the vegetation polygon area is roadless) 2 Moderate (>33% - 66% of polygon is intersected by roads) 3 High (<33% of polygon is roadless) 9 Not applicable or not evaluated DEVELOPMENT CLEARING_DISTURBANCE COMMENTS MethodID Method used to determine vegetation type IsolatedTree JuniperExpansion RESTORATION Restoration was observed in the stand. Some older restoration would most likely not be detectable from photo interpretation. Mapping Standards, Field Data Collection, and Accuracy Assessment for Vegetation Mapping in Modoc and Lassen Counties, California. Geographic Information Center; 2/1/2021. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 None Obvious None Obvious Juniper occidentalis removal Juniper occidentalis removal Grass/forbs seeding Grass/forbs seeding Shrub/tree planting Shrub/tree planting Thinning (Pine, Juniper occidentalis) Thinning (Pine, Juniper occidentalis) Other (see comments) Other (see comments) SIZE_CATEG The size of the dominant tree layer, measured in dbh (diameter at breast height) Mapping Standards, Field Data Collection, and Accuracy Assessment for Vegetation Mapping in Modoc and Lassen Counties, California. Geographic Information Center; 2/1/2021. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 1 Seedlings (<1") 2 Saplings (1-6") 3 Pole (6-11") 4 Small (11-24") 5 Medium-Large (>24) 6 Multi Layered Med-Lrg Trees over smaller trees in densities >60% HeightClass Acres GIS Calculated acres UID Unique identifier for the polygon Ortho_NAIP_Year The year that the NAIP imagery that is the base for the map was acquired. ALLIANCE ASSOCIATION Association name, if mapped to association. Generally stands were expected to be mapped at the alliance or group level, see report for details. Mapping Standards, Field Data Collection, and Accuracy Assessment for Vegetation Mapping in Modoc and Lassen Counties, California. Geographic Information Center; 2/1/2021. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=189051 CalVegName A crosswalk to the CalVeg vegetation system. Note that there may be a one-to-many relationship between CalVeg and NVCS. See http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192 http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192 CalVegCode CalVeg code for the crosswalk to the CalVeg vegetation system. Note that there may be a one-to-many relationship between CalVeg and NVCS. See http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192 http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192 CWHRType A crosswalk to the California Wildlife Habitat Relationships system. Note that there is often a one-to-many relationship between CWHR and NVCS, but the closest for the region are selected here. See http://www.dfg.ca.gov/biogeodata/cwhr/ http://www.dfg.ca.gov/biogeodata/cwhr/ CWHRCode CWHR coding for the crosswalk to the California Wildlife Habitat Relationships system. Note that there is often a one-to-many relationship between CWHR and NVCS, but the closest for the region are selected here. See http://www.dfg.ca.gov/biogeodata/cwhr/ See http://www.dfg.ca.gov/biogeodata/cwhr/ GlobalRank The global rarity ranking of the plant community mapped (ranks are available for all California alliances, and some associations). Ranks are based on a set of criteria including the rarity of the community (extent and occupancy), the threats that the community is subject to, and any known trends in the quality, size, or quantity of stands within the state. Ranks go from G1 which is critically imperiled/has very few occurrences to G5, when a community is demonstrably secure due to security globally. Ranks G1-G3 are considered sensitive. See: http://www.natureserve.org/sites/default/files/publications/files/natureserveconservationstatusmethodology_jun12_0.pdf and https://wildlife.ca.gov/Data/VegCAMP/Natural-Communities http://explorer.natureserve.org/granks.htm; and https://wildlife.ca.gov/Data/VegCAMP/Natural-Communities StateRank The state rarity ranking of the plant community mapped (ranks are available for all California alliances, and some associations). Ranks are based on a set of criteria including the rarity of the community (extent and occupancy), the threats that the community is subject to, and any known trends in the quality, size, or quantity of stands within the state. Ranks go from G1 which is critically imperiled/has very few occurrences to G5, when a community is demonstrably secure due to security globally. Ranks S1-S3 are considered sensitive. See: http://www.natureserve.org/sites/default/files/publications/files/natureserveconservationstatusmethodology_jun12_0.pdf and https://wildlife.ca.gov/Data/VegCAMP/Natural-Communities http://explorer.natureserve.org/granks.htm; and https://wildlife.ca.gov/Data/VegCAMP/Natural-Communities Rare Rarity of the vegetation type. Yes= sensitive natural communitu. Alliances and associations with global ranks of G1-G3 state ranks of S1-S3 are considered sensitive natural communities. Additionally if an association has not gone through the ranking process, but is estimated to be sensitive Yes will be shown without a G or S rank. https://www.wildlife.ca.gov/Data/VegCAMP/Natural-Communities/Background CaCode California Natural Community Codes - unique code assigned to alliances and associations. https://www.wildlife.ca.gov/Data/VegCAMP/Natural-Communities NVCSAlliance The standardized name for the alliance within the National Vegetation Classification System, as described in the Modoc Lassen Classification, Boul, R., T. Keeler-Wolf, J. Ratchford, T. Haynes, D. Hickson, R. Yacoub, B. Harbert, J. Evens. 2021. Classification of the Vegetation of Modoc and Lassen Counties, California. Vegetation Classification and Mapping Program, California Department of Fish and Wildlife, Sacramento, CA ; https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=183030 NVCSGroup The standardized name for the alliance within the National Vegetation Classification System, as described in the Modoc Lassen Classification, Boul, R., T. Keeler-Wolf, J. Ratchford, T. Haynes, D. Hickson, R. Yacoub, B. Harbert, J. Evens. 2021. Classification of the Vegetation of Modoc and Lassen Counties, California. Vegetation Classification and Mapping Program, California Department of Fish and Wildlife, Sacramento, CA ; https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=183030 NVCSMG The standardized name for the alliance within the National Vegetation Classification System, as described in the Modoc Lassen Classification, Boul, R., T. Keeler-Wolf, J. Ratchford, T. Haynes, D. Hickson, R. Yacoub, B. Harbert, J. Evens. 2021. Classification of the Vegetation of Modoc and Lassen Counties, California. Vegetation Classification and Mapping Program, California Department of Fish and Wildlife, Sacramento, CA ; https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=183030 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. 20210208 California Department of Fish and Wildlife, Vegetation Classification and Mapping Program Rachelle Boul Lead Ecologist unknown

1807 13th Street, Suite 202

Sacramento CA 95811 VegCAMP@wildlife.ca.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time