Vegetation - Molok Luyuk (Walker Ridge) [ds3159]

Aerial Information Systems, Inc California Native Plant Society Vollmar Natural Lands Consulting 20240626 Vegetation - Molok Luyuk (Walker Ridge) [ds3159] vector digital data https://www.wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/ds3159.zip U.S. Bureau of Land Management (BLM) has a goal to develop fine-scale vegetation maps for all the public lands it manages in California. To help meet this goal BLM contracted Aerial Information Systems, Inc. (AIS) to conduct vegetation classification development, fine-scale vegetation mapping, and accuracy assessment (AA) of approximately 22,061 acres within Colusa and Lake counties of California, under Contract GS00F170GA-Order No.140L1221F0044. AIS subcontracted the California Native Plant Society (CNPS) to conduct classification development work needed for this project, as well as AA field data collection. The California Department of Fish and Wildlife’s (CDFW) Vegetation Classification and Mapping Program (VegCAMP) provided in-kind service to allocate AA sample sites and score the vegetation map using the AA data.The study area, referred to as Walker Ridge or Molok Luyuk, which means Condor Ridge in the Native American Patwin language of the Yocha Dehe Wintun Nation, is located in the inner North Coast Ranges, east of Clear Lake and west of the town of Williams in the Sacramento Valley. This area has a large serpentinite outcrop that contains a high diversity of plants and plant communities, and is home to dozens of threatened and endangered (T&E) plants and animals. The vegetation classification developed for the project follows Federal Geographic Data Committee (FGDC) and National Vegetation Classification Standards (NVCS). The classification is based on new and previous survey information and classification work. The map was produced applying heads-up digitizing techniques using a base of 2020 60-centimeter National Agricultural Imagery Program (NAIP) imagery (true-color and color infrared), in conjunction with ancillary data and imagery sources. Map polygons are assessed for Vegetation Type, Percent Cover, Exotics, Development Disturbance, and other attributes. The minimum mapping unit (MMU) is 1 acre. Exceptions were created for vegetation stands of special significance. In this mapping effort, riparian vegetation and wetland types were mapped to a 1/4-acre MMU. Polygons representing land use were mapped with a 1-acre MMU. There were a total of 42 mapping classes composed of 30 alliances and alliance-level types such as Provisional Alliances, Semi-natural Alliances, and Mapping Units; and 5 Miscellaneous Classes relating to features such as agriculture, water, and urban disturbance; and 7 upper-level hierarchical types, such as Macrogroup and Group. Field reconnaissance and accuracy assessment enhanced map quality. The overall accuracy assessment ratings for the final vegetation map was 89.7 percent overall fuzzy accuracy.More information can be found in the project report, which is bundled with the vegetation map published for BIOS here: https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/3100_3199/ds3159.zip Under contract to the U.S. Bureau of Land Management (BLM), Aerial Information Systems, Inc. (AIS) conducted vegetation classification development, fine-scale vegetation mapping, and accuracy assessment (AA) of approximately 22,061 acres within Colusa and Lake counties of California, under Contract GS00F170GA-Order No.140L1221F0044. AIS subcontracted the California Native Plant Society (CNPS) to conduct classification development work needed for this project, as well as AA field data collection. The California Department of Fish and Wildlife’s (CDFW) Vegetation Classification and Mapping Program (VegCAMP) provided in-kind service to allocate AA sample sites and score the vegetation map using the AA data. Riparian vegetation and wetland types were mapped to a 1/4-acre MMU. Polygons representing land use were mapped with a 1-acre MMU. The floristic classification follows protocols compliant with the Federal Geographic Data Committee (FGDC) and National Vegetation Classification Standards (NVCS). Altered fields: The field MapUnit from the original data was changed to MapClass to fit the MCV standard field name. Percent Cover Mapping Considerations: It is important to note that the photo interpreters could only accurately quantify the vegetation that is visible on the aerial imagery. Therefore, “bird’s eye” total cover was mapped, meaning that the cover of understory strata that were obscured by overstory strata was not included. For this reason, total cover for shrubs and herbaceous plants may be underestimated if their extent was hidden under the crowns of overstory trees and/or shrubs, and may differ from assessments done on the ground by field crews. Where the cover of a particular life form is very sparse, it can be difficult to determine between a cover class “0” (None or Not Observable) and “1” or “2” percent. The photo interpreters looked for the consistent presence of very sparse vegetative cover throughout a polygon before assigning it a cover class of “1 “or higher. Where overstory cover exceeds 40 percent, such as closed canopy forest, dense riparian, or shrub stands, it was considered too dense to give a reliable estimate of lower tier canopy or understory percent cover. In these situations, the code assigned for percent cover for the understory life forms would be “Not Applicable/Not Assessed.” This same criterion is used in Statewide mapping efforts. Rarity Ranking: Rarity ranks for various types in this map have been updated utilizing the NatureServe Conservation Status Assessments Rank Calculator Version 3.186, and are current as of May 13, 2024. Rarity ranks are subject to change due to changing threats and trends and as ranking methodologies are further refined. Please check CDFW’s Natural Communities page for the most up-to-date rarity ranks (https://www.wildlife.ca.gov/Data/VegCAMP/Natural-Communities). References: Reyes, E., J. Fulton, J. Buck-Diaz, K. Sikes, S. Vu, A. LaFever-Jackson, J. Evens, and D. Johnson. 2023. Fine-Scale Vegetation Map And Accuracy Assessment Of The Walker Ridge Area, Colusa And Lake Counties, California, Contract GS00F170GA - Order No. 140L1221F004, Final Report. Prepared for the U.S, Bureau of Land Management. Aerial Information Systems, Inc., Redlands, CA. Available from: https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf Vegetation Classification and Mapping Program (VegCAMP). 2013. 2013 California desert vegetation map and accuracy assessment in support of the Desert Renewable Energy Conservation Plan. Final Report. Prepared for the California Department of Fish and Wildlife Renewable Energy Program and the California Energy Commission. California Department of Fish and Wildlife, Sacramento, CA. Available from: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=62825 Complete None planned -122.533260 -122.355902 39.169429 38.998771 ISO 19115 Topic Categories biota environment imageryBaseMapsEarthCover None Molok Luyuk California Department of Fish and Wildlife CDFW Coast Ranges National Vegetation Classification Standard NVCS photointerpretation Ukiah Colusa County Lake County vegetation vegetation alliance Vegetation Classification and Mapping Program VegCAMP Walker Ridge Manual of California Vegetation None CDFW’s 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.gov or call any of the staff listed here: https://wildlife.ca.gov/Data/VegCAMPLicense: 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. Bureau of Land Management Aerial Information Systems, Inc mailing and physical

112 First Street

Redlands California 92373 US (909)793-9493 ais@aisgis.com California Native Plant Society mailing and physical

2707 K Street, Suite 1

Sacramento California 95816 US California Department of Fish and Wildlife VegCAMP (Vegetation Classification and Mapping Program) VegCAMP Program Lead mailing

PO Box 944209

Sacramento California 94244-2090 US VegCAMP@wildlife.ca.gov California Department of Fish and Wildlife Sabrina Bento Ecological Data Curator sabrina.bento@wildlife.ca.gov California Department of Fish and Wildlife VegCAMP (Vegetation Classification and Mapping Program) VegCAMP Program Lead mailing

PO Box 944209

Sacramento California 94244-2090 US VegCAMP@wildlife.ca.gov This map was created by Aerial Information Systems, Inc. (AIS). It was prepared for publication in BIOS by the California Department of Fish and Wildlife’s (CDFW) Vegetation Classification and Mapping Program (VegCAMP). Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 Vector GT-polygon composed of chains 1755 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 ds3159 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features. Shape_Length Length of feature in internal units. Positive real numbers that are automatically generated. Shape_Area Area of feature in internal units squared. Positive real numbers that are automatically generated. 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. 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 MapCode The code for a vegetation association, alliance, group, unvegetated type, or land use for polygons that are not natural vegetation. https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf 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://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf ConCov Percent of Cover - Woody (Conifer, Hardwood, Total Tree, Shrub) Absolute Cover in 1% increment. nnn = Absolute Cover 000 = None or None Observable 999 = Not Applicable/Not Assigned https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf HdwdCov Percent of Cover - Woody (Conifer, Hardwood, Total Tree, Shrub) Absolute Cover in 1% increment. nnn = Absolute Cover 000 = None or None Observable 999 = Not Applicable/Not Assigned https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf TreeCov Percent of Cover - Woody (Conifer, Hardwood, Total Tree, Shrub) Absolute Cover in 1% increment. nnn = Absolute Cover 000 = None or None Observable 999 = Not Applicable/Not Assigned https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf ShrubCov Percent of Cover - Woody (Conifer, Hardwood, Total Tree, Shrub) Absolute Cover in 1% increment. nnn = Absolute Cover 000 = None or None Observable 999 = Not Applicable/Not Assigned https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf HerbCov Herbaceous vegetation is attributed to the following range categories: 1 = None or Not Observable, <2% 2 = >2-10% 3 = >10-40% 4 = >40% 999 = Not Applicable/Not Assessed https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf Exotics 0 = None Visible 1 = Low: Patches of exotics visible, but cover not significant (relative cover to total <33%) 2 = Moderate: Exotics (particularly herbaceous) significant and cover may exceed dominant vegetation strata (relative cover <66%) 3 = High: Stand characterized by exotics (vegetation type is “exotic”) (relative cover >66%) 9 = Not Applicable/Not Assigned https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf Roadedness Roadedness Disturbance 0 = None Visible 1 = Low (>2/3 contiguous roadless) 2 = Moderate (1/3 - 2/3 contiguous roadless) 3 = High (<1/3 contiguous roadless) 9 = Not applicable/Not Assigned https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf Development Development Disturbance 0 = None Visible 1 = Low (>0 - 2% of polygon affected) 2 = Moderate (>2% - 5% of polygon affected) 3 = High (>5% of polygon affected) 9 = Not applicable/Not Assigned https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf AnthroAlt Anthropogenically Altered Disturbance 0 = None Visible 1 = Low (>0% – 33% of polygon affected) 2 = Moderate (>33% – 66% of polygon affected) 3 = High (>66% of polygon affected) 9 = Not Applicable/Not Assigned https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf Notes Notes from original data set. https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf LandUse Land Use 0 = Not Assigned/Not Assessed 1000 = Urban 1436 = Water Transfer (Major Canals, Aqueducts and Agricultural Channels) 1850 = Wildlife Preserves & Sanctuaries 2000 = Agriculture (Includes Nurseries) 2100 = Non-woody Row & Field crops 2200 = Orchards & Vineyards 2300 = Improved Pastureland (Irrigated) 3000 = Vacant Land 3500 = Vacant Land - Restoration 9800 = Undifferentiated Water 9810 = Water Impoundment Feature https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf MethodID Method ID 1 = Rapid Assessment (current project) 2 = Relevé (current project) 3 = Field Verification (current project) 4 = Photointerpretation 5 = Adjacent Stand Information or Photo 6 = AIS Reconnaissance (current project) 7 = Other Information 8 = Older Plot Data/Other Agency Recent Plot Data https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf ModalOverstoryHeight Modal Overstory Height Class (Trees) (note that categories >35-50m and >50m were not encountered) 01 = <.5m 02 = >.5-1m 03 = >1-2m 04 = >2-5m 05 = >5-10m 06 = >10-15m 07 = >15-20m 08 = >20-35m 09 = >35-50m 10 = >50m 999 = Not Applicable/Not Assessed https://www.cnps.org/wp-content/uploads/2023/12/WalkerRidge_FinalReport.pdf UID Unique identifier for each polygon. Calculated at the end of project 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 MCV, 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 MCV. 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 SensitiveFlag The Sensitive Flag is a field where exceptions to what is in the ranking for an alliance or a determination for a group based on alliances are captured. For example, an alliance might be ranked as G4/S4, because it is broadly distributed in the state and covers a considerable area. However, every association within that alliance is considered sensitive because it isn't broadly distributed or is locally threatened. Such an alliance would have Sensitive = Y because everywhere the alliance is represented the association community is sensitive. States for this field include: "AllAssocOfAlliance" (described above); "AllAllianceOfGroup" (similar to AllAssocOfAlliance but used when all the alliances in the group are ranked as sensitive); "AllAssocOfMapClass" (used when the map only contains a subset of associations known in the state and all of these are sensitive); "SecondryFromSplit" (this can occur when the alliance or other community/level which was mapped was subsequently split into multiple, both sides of the split are known to be present in the map, the primary is not sensitive but the less common community/level from the split is sensitive); and "AllAssocFromRegion" (when it is known that only a subset of associations from alliance exist within the ecoregion that the map is in and all these are sensitive). https://vegetation.cnps.org/ 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 National Vegetation Classification System 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, with some potential exceptions within the Manual of California Vegetation Database. https://vegetation.cnps.org/ MCVMacrogroup The standardized name for the macrogroup within the National Vegetation Classification System, with some potential exceptions within the Manual of California Vegetation Database. https://vegetation.cnps.org/ SecondCaCode The secondary California Code of the Alliance or Association, typically when original community was split and both communities could exist in map https://www.wildlife.ca.gov/Data/VegCAMP/Natural-Communities CommunityLink The link to the alliance in the Manual of California Vegetation Online. https://vegetation.cnps.org/ 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 20240627 Bureau of Land Management FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time CDFW’s 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.gov or call any of the staff listed here: https://wildlife.ca.gov/Data/VegCAMPLicense: 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.