Rachelle Boul, California Department of Fish and Wildlife, Senior Ecologist 20210811 vector digital data https://www.wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/2900_2999/ds2940.zip The California Department of Fish and Wildlife (CDFW) Vegetation Classification and Mapping Program (VegCAMP) created a fine-scale vegetation map of Slinkard Valley and Little Antelope Valley Wildlife Areas in Mono County, California. The vegetation classification was derived from data collected in the field during the periods August 28-31, 2017, September 10-14, 2018, and November 5-9, 2018. Vegetation polygons were drawn using heads-up “manual” digitizing using the 2016 National Agricultural Imagery Program (NAIP) true color and color infrared (CIR) 1-meter resolution data as the base imagery. Supplemental imagery included NAIP true color and CIR 1-meter resolution data from 2009-2012, BING imagery, and current and historical imagery from Google Earth. The minimum mapping unit (MMU) is 1 acre, with the exception of wetland and riparian types, which have an MMU of ½ acre. Mapping is to the National Vegetation Classification System (NVCS) hierarchy association, alliance, or group level based on the ability of the photointerpreters to distinguish types based on all imagery available and on the field data.Field accuracy assessment surveys were collected by CDFW regional and VegCAMP staff in the fall of 2019. It was determined that the map had an overall accuracy of 89.3% before suggested adjustments were made to typing and line-work in response to the accuracy assessment. As part of the mapping process for this project we also implemented a drone component. The purpose was to test the use of drone photos to enhance and extend reconnaissance efforts for mapping, help with determining signatures on coarser imagery, use images taken above surveys as a check on cover estimates, and test whether drone imagery would allow for mapping herbaceous vegetation at a finer scale.Citations:Boul, R., Keeler-Wolf, T., J. Ratchford, T. Haynes, D. Hickson, J. Evens and R. Yacoub. Classification of the Vegetation of Modoc and Lassen Counties, California. California Department of Fish and Widlife; 2/2021.Vegetation Classification and Mapping Program, CA Dept. of Fish and Wildlife. Vegetation Map and Classification of Slinkard Valley and Little Antelope Valley Wildlife Areas, Mono County, California. California Department of Fish and Wildlife, Vegetation and Classification and Mapping Program; 8/2021. The purpose of the classification and vegetation map is to aid in the development of a grazing plan for Little Antelope Valley and to determine locations of aspen stands and wetlands in Slinkard and Little Antelope Valley Wildlife Areas. In addition, the vegetation classification and mapping provide an inventory of habitat types and a measure of the extent of each type on the property for use in assessing the biological resources present and determining other appropriate management strategies. Complete Unknown -119.606607 -119.480281 38.659577 38.419830 None California Department of Fish and Wildlife, National Vegetation Classification Standard, NVCS, Manual of California Vegetation, vegetation, Mono County, photointerpretation ISO 19115 Topic Categories environment imageryBaseMapsEarthCover None California, Mono County None 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.CDFWs VegCAMP appreciates learning how these vegetation 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 us at VegCAMP@wildlife.ca.govor call any of the staff listed here: https://wildlife.ca.gov/Data/VegCAMP California Department of Fish and Wildlife Rachelle Boul Senior Ecologist rachelle.boul@wildlife.ca.gov California Department of Fish and Wildlife VegCAMP VegCAMP@wildlife.ca.gov California Department of Fish and Wildlife VegCAMP VegCAMP@wildlife.ca.edu This map was created by the California Department of Fish and Wildlifes (CDFW) Vegetation Classification and Mapping Program (VegCAMP) in cooperation with staff from CDFW Region 6. Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 Vector GT-polygon composed of chains 852 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 ds2940 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features. MCVName Names will be the same as ones used in the Manual of California Vegetation and California Natural Community List (https://wildlife.ca.gov/Data/VegCAMP/Natural-Communities). These standardized names correspond as much as possible to the National Vegetation Classification System (see http://usnvc.org/) or are submitted to the regional editors for induction.Classes for human land use or otherwise unvegetated land were drawn from the California Wildlife Habitat Relationship. Online MCV :https://vegetation.cnps.org/ MCVLevel The standardized level of the vegetation description in the Manual of California Vegetation corresponding with levels of the National Vegetation Classification System 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. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=165535 MapCode The code for a vegetation association, alliance, group, unvegetated type, or land use for polygons that are not natural vegetation, as defined by CDFW Vegetation Classification and Mapping Program: VegCode MapClass 1001 Abies concolor Alliance 1101 Pinus jeffreyi Alliance 1311 Pinus monophylla - Juniperus osteosperma / Shrub Understory Woodland Alliance 1313 Pinus monophylla / Artemisia tridentata / Elymus elymoides Association 1321 Cercocarpus ledifolius Alliance 1601 Populus trichocarpa Alliance 1701 Populus tremuloides Alliance 2012 Ceanothus velutinus Alliance 2013 Prunus emarginata - Holodiscus discolor Alliance 2015 Ceanothus velutinus Shrubland Association 2511 Artemisia tridentata Alliance 2513 Purshia tridentata - Artemisia tridentata Alliance 2514 Artemisia tridentata - (Ericameria nauseosa) / Bromus tectorum Ruderal Shrubland Association 2515 Purshia tridentata - Artemisia tridentata -Tetradymia canescens Association 2517 Eriogonum sphaerocephalum / Poa secunda Alliance 2522 Artemisia tridentata ssp. vaseyana Alliance 2523 Artemisia tridentata ssp. vaseyana - Symphoricarpos oreophilus / Bromus carinatus Association 2531 Ericameria nauseosa Alliance 2540 Keckiella breviflora MU 2702 Salix exigua Alliance 2710 Western Montane - Subalpine Riparian and Seep Shrubland Group 2711 Cornus sericea - Rosa woodsii - Ribes spp. 2712 Rosa woodsii Association 2715 Salix lasiolepis Alliance 2716 Shepherdia argentea special stand 2730 Vancouverian - Rocky Mountain Montane Wet Meadow and Marsh Group 2735 Carex nebrascensis - Carex vesicaria - Carex pellita Wet meadow Map Unit 2738 Juncus arcticus (var. balticus, mexicanus) Alliance 3113 Leymus cinereus - Leymus triticoides Alliance 3114 Leymus triticoides - Poa secunda Association 3604 Typha (angustifolia, domingensis, latifolia) 3711 Festuca idahoensis - Elymus spicatus - Poa secunda Alliance 3800 Californian Ruderal Grassland, Meadow and Scrub Group 3801 Conium maculatum - Foeniculum vulgare Alliance 3851 Bromus tectorum - Taeniatherum caput-medusae Alliance 3852 Bromus tectorum Association 3860 Western North American Ruderal Marsh, Wet Meadow and Shrubland Group 3861 Poa pratensis - Agrostis gigantea - Agrostis stolonifera Ruderal Marsh Alliance 3862 Festuca arundinacea Association 3864 Thinopyrum (ponticum, intermedium) Provisional Association 3871 Agropyron cristatum Alliance 4000 Western North American Temperate Freshwater Aquatic Vegetation Group 9800 Developed 9803 Small Earthen Dam Ponds and Natural Lakes 9831 Rock outcrop ConifCover Percent bird’s-eye cover of hardwood trees estimated in 1% increments within a vegetation stand, taking plant porosity into consideration. This means that if conifer canopies cover 10% of the stand, but are themselves only 50% opaque to the ground, then the cover estimate should be 5%. If tree cover is <1% a cover value of 1% was used. HdwdCover Percent bird’s-eye cover of hardwood trees estimated in 1% increments within a vegetation stand, taking plant porosity into consideration. This means that if hardwood canopies cover 10% of the stand, but are themselves only 50% opaque to the ground, then the cover estimate should be 5%. If tree cover is <1% a cover value of 1% was used. TreeCover The cover of conifer and hardwood trees in a polygon was estimated in 1% increments as “bird’s-eye cover,” taking plant porosity into consideration. This means that if conifer canopies cover 10% of the stand, but are themselves only 50% opaque to the ground, then the cover estimate should be 5%. Conifer and hardwood cover are estimated based on regenerating trees as well as trees >6” dbh. Any overlap of conifer and hardwood is not included in the Total Tree Cover. If tree cover is <1% a cover value of 1% was used. ShrubCover The cover of shrubs in a polygon was estimated in 1% increments as “bird’s-eye cover,” taking plant porosity into consideration. Shrub cover under trees is estimated using cover classes. However, if tree cover is greater than or equal to 40%, shrub cover is not recorded (= not applicable) because it is not possible to estimate under the trees. If shrub cover is <1%, but not zero, a cover value of 1% was used. HerbCover Percent bird’s-eye cover of herbs estimated in classes within a vegetation stand. Herbaceous vegetation is attributed to the following category ranges: 1 = None or Not Observable, <2% (used only for naturally sparse herbaceous types, otherwise polygon is not considered vegetated) 2 = 2-9% 3 = 10-40% 4 = >40% 99 = Not applicable/Not assigned (Herb cover is not assessed for developed types and if woody cover is over 40%) ExoticCover 0 None visible. Sparse herbaceous vegetation with a minimal to low relative cover of exotic species; based on field data, no evidence of exotics in sampling, no evidence of exotics on imagery and based on modeling, assumed not present or not regular in the stand. 1 Patches of exotics visible, but cover not significant (relative cover to total <33%) Sparse to moderate cover of herbaceous vegetation with a low to moderately high relative cover of exotic species. Patches of exotics are visible, but cover is not significant. 2 Exotics (particularly herbaceous) significant and cover may exceed dominant vegetation strata (relative cover <66%) Exotics are significant and cover may exceed the dominant vegetation strata. Areas of higher disturbance are likely to be in this category. 3 Stand characterized by exotics (vegetation type is “exotic”) (relative cover >66%) This is reserved primarily for Alliance-level calls which are defined by exotics; stands are characterized by exotic vegetation (as defined by the map unit). Examples of this are stands of Bromus tectorum. 9 Not applicable/Not evaluated Roadedness Roadedness was estimated as the percent of the stand that does not have roads or one- or two-track vehicle trails, i.e., the area of the largest unroaded (intact) portion of the stand divided by the area of the entire stand. Note that we observed roads in areas of higher tree cover in the field that did not show up on the imagery, and so roadedness is likely underestimated in areas of high tree cover. 0 None or none visible. 1 Low: there is an intact portion of the stand that makes up at least 67% of the entire stand. If a polygon is bounded by or adjacent to a road for more than 10 meters of its perimeter, even if there are no roads within the polygon, this code is used. 2 Moderate: between 33% and 66% of the vegetation polygon is intersected by roads. 3 High: less than 33% of the vegetation polygon lacks roads. 9 Not applicable. Clearing This attribute was used for human removal of overstory, understory, or both, for vegetation polygons. 0 None or none visible. 1 Low: <33% of stand is cleared. 2 Moderate: 33-66% of stand is cleared and there may be a dense concentration of clearing within a single or few parts of the vegetation polygon. 3 High: >66% of the polygon has clearings, with multiple examples evenly distributed. Fully cleared areas over 0.25 acre are mapped separately as the “Anthropogenic areas of little or no vegetation” map class. 9 Not applicable. Development The percent of the polygon affected by sub-MMU occurrences of structures, fences, cement pads, trash piles, etc. is estimated using the following categories. This attribute applies to vegetated stands; choose the Developed map unit when development and associated clearing cover at least 0.25 acres. 0 None or none visible. 1 Low: <2% of polygon affected. Structures, cement pads, trash piles, etc. are widely spaced at very low density. 2 Moderate: 2-5% of polygon affected. Multiple examples of structures, cement pads, trash piles, etc. are visible throughout the polygon. There may be a dense concentration of development within a single or few parts of the vegetation polygon. 3 High: >5% of polygon affected. Multiple structures, etc., are evenly distributed in a vegetated polygon to cover at least 5% of the polygon, but remain individually isolated and surrounded by the predominant vegetation for which the polygon is labeled. If such an area is 0.25 acres or larger, it is mapped separately as a Developed polygon. 9 Not applicable. CWHRtree The diameter at breast height (dbh) for all treed polygons was estimated using the California Wildlife Habitat Relationship (CWHR) tree categories. When estimating the main size class, the mean diameter of all trees was estimated over the entire stand and the mean was weighted toward the larger tree dbh. Applied only when polygon is a tree type, or for a developed polygon. Code values and classes are as follows: T1 <1” dbh T2 1” to 6” T3 >6” to 11” T4 >11” to 24” T5 >24” T6 Multilayer: Mature trees over younger trees HtClass Woody height of dominant strata The height class was estimated for the dominant layer. Estimated for natural and developed polygons. Coded values and height classes are as follows: 1 < ½ m 2 ½-1 m 3 1-2 m 4 2-5 m 5 5-10 m 6 10-15 m 7 15-20 m 8 20-35 m 9 35-50 m 10 >50 m MethodID Method of identification The method in which the polygon delineation and attribution was determined. 1 Photo interpretation. 2 Rapid Assessment or Relevé. 3 Pre-map Reconnaissance form; these are surveys that were taken on field forms. 4 Pre-map Reconnaissance formless; these are surveys that were done by making observations on a notepad or directly into the mobile mapping dataset. 5 Post-linework observation form; these are surveys done to confirm the map class after linework is complete but before an accuracy assessment is done. 6 Post-linework observation formless. 7 Adjacent RA/Relevé. 8 Other information, older surveys; older vegetation surveys, plant observations, etc. were used. 9 Accuracy Assessment; information from the accuracy assessment was used to improve the map after the accuracy assessment was completed. SurveyID The Database ID of the Rapid Assessment, Relevé, Reconnaissance, or Accuracy assessment survey used to determine the vegetation type and/or other attributes (if one was used; see Method of identification). Notes Text field for additional information. UID Unique identifier for each polygon. Calculated at the end of project Acres GIS Calculated acres based on calculation done in California (Teale) Albers, NAD83 Hectares GIS Calculated hectares based on calculation done in California (Teale) Albers, NAD83 CalVegType A crosswalk to the Classification and Assessment with Landsat of Visible Ecological Groupings (CalVeg) vegetation system (USDA Forest Service). Note that there may be a one-to-many relationship between CalVeg and NVCS, but the best crosswalk for this area is chosen. https://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192 CalVegCode The code used for the CalVeg type. https://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192 CWHRType A crosswalk to the California Wildlife Habitat Relationships system. Note that there is usually a one-to-many relationship between CWHR and NVCS. The best fit for this area has been chosen. https://wildlife.ca.gov/Data/CWHR/Wildlife-Habitats CWHRCode The code for the CWHR type. https://wildlife.ca.gov/Data/CWHR/Wildlife-Habitats 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 broad distribution with area not subject to threats. 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 Ranks are current as of the publication date or update date. http://www.natureserve.org/sites/default/files/publications/files/natureserveconservationstatusmethodology_jun12_0.pdf 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 S1 which is critically imperiled/has very few occurrences to S5, 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 Ranks are current as of the publication date or update date. http://www.natureserve.org/sites/default/files/publications/files/natureserveconservationstatusmethodology_jun12_0.pdf and https://wildlife.ca.gov/Data/VegCAMP/Natural-Communities Sensitive Is the vegetation type considered sensitive? Y= yes, sensitive natural community. 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 Y will be shown without a G or S rank. Ranks are current as of the publication date or update date. 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 MCVAlliance The standardized name for the alliance within the NVCS as interpreted in the Manual of California Vegetation. https://vegetation.cnps.org/ MCVGroup The standardized name for the group within the National Vegetation Classification System, as described in the Modoc Lassen Classification, https://vegetation.cnps.org/ MCVMacrogroup The standardized name for the macrogroup within the National Vegetation Classification System, as described in the Modoc Lassen Classification, https://vegetation.cnps.org/ 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. 20210826 California Department of Fish and Wildlife Rachelle Boul Senior Ecologist rachelle.boul@wildlife.ca.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time