Marin County Open Space District Aerial Information Systems 20131218 vector digital data https://wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/900_999/ds957.zip This is a vegetation map of the Marin County Open Space District Lands. It was produced in 2008 by Aerial Information Systems using hi-resolution (1') natural color imagery provided by the County of Marin, acquired by Vargis (date unknown). The classification is based on the National Vegetation Classification System, and specifically supported by fieldwork done by CNPS in both the MCOSD and the Marin Municipal Water District through 2008. Prior to developing a Vegetation and Biodiversity Management Plan, MCOSD determined that a vegetation classification and map of their lands was necessary to characterize existing floristic resources. Results the classification and this vegetation map (AIS 2008) will help inform a variety of resource management tasks including sensitive species and habitat protection, trail and road maintenance, wildfire risk reduction, Sudden Oak Death mitigation, and compliance with federal, state and local environmental regulations. The mapping report can be found at https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=73951 The classification report can be found at https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74651 Complete None planned -122.708678 -122.443514 38.151762 37.871095 ISO 19115 Topic Category environment biota None Vegetation None California Marin County None 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. Marin County Open Space District Matt Sagues MSagues@marincounty.org Marin County Open Space District Aerial Information Systems Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.1.7333 No formal accuracy assessment was done, but classification surveys were compared with the call that the photointerpreter made for correspondance, and in the 250 (of 405) surveys where the call differed, AIS either changed their PI call or noted why they did not. Vector GT-polygon composed of chains 7157 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 ds957 Vegetation - Marin County Open Space District [ds957] OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. NVCSNAME The name of the community or hierarchical level within NVCS; for mapunits that are not natural vegetation, the Wildlife Habitat Relationships classification is used. http://www.natureserve.org/explorer/servlet/NatureServe?init=Ecol NVCSLEVEL The level of the National Vegetation Classification System Hierarchy that the vegetation type corresponds to. http://ojs.uniroma1.it/index.php/Annalidibotanica/article/view/9261/9881 MAPCLASS Vegetation type (alliance, association or mapping unit) per mapping classification. PI PI codes used by AIS to describe the vegetation or cover within delineated polygons. DenCon Bird's eye percent cover class for conifer. Marin County Open Space District Vegetation Mapping Report 0 Not Applicable 1 Greater than 60% 2 40-60% 3 25-40% 4 10-25% 5 2-10% DenHard Bird's eye percent cover class for hardwoods. Marin County Open Space District Vegetation Mapping Report 0 Not Applicable 1 Greater than 60% 2 40-60% 3 25-40% 4 10-25% 5 2-10% DenShr Bird's eye percent cover class for shrubs. Marin County Open Space District Vegetation Mapping Report 0 Not Applicable 1 Greater than 60% 2 40-60% 3 25-40% 4 10-25% 5 2-10% BroomModif The presence of broom within a delineated stand of vegetation. It is important to note that the broom modifier should be considered temporal since the imagery may differ from what was actually found on the ground. The broom modifier was only used when seen on the digital imagery and was not a line former for polygons. In other words, the line work for a polygon was not based on the presence of broom. Marin County Open Space District Vegetation Mapping Report 0 Minimal or no disturbance visible 1 Low: 1-5% of the polygon had broom visible 2 Moderate: 5-10% of the polygon had broom visible 3 Severe: Over 10% of the polygon had broom visible DeadVeg Within the study area, Sudden Oak Death (SOD) is a disease that infects oaks or close relatives to oaks (e.g. tanoak). Since the dead trees can create a dangerous fire hazard, their presence was given a modifier. The trees most commonly affected by SOD in this study area are primarily coast live oak, and tanoak. Marin County Open Space District Vegetation Mapping Report 0 Minimal or no mortality 1 Low: 1-5% of the polygon had canopy mortality 2 Moderate: 5-10% of the polygon had canopy mortality 3 Severe: <10% of the polygon had canopy mortality InitFCCom This field was originally called Comment. It would contain any information regarding the field questions from AIS in order to better guide the field crew person to what the specific field question was for the initial field questions (Jeff Kennedy). It now contain contains the field crew’s answers or observations for a polygon or the remaining field question if it wasn’t answered. The field question remains here in case there is a subsequent effort after this project is complete. Otherwise, it will be blank. Marin County Open Space District Vegetation Mapping Report FieldCheck The fieldcheck attribute was used to notify the field crew that the photo interpreters had a question about the vegetation. A value of 1 was assigned to a polygon when the photo interpreter had a question about a polygon that needed to be checked by a field crew person. Once the question was answered, the PI code was assigned based on the field crew’s findings, and a value of 2 was given to the field attribute in the polygon. A value of 6 was given to polygons that the field crew deemed inaccessible due to the terrain. Marin County Open Space District Vegetation Mapping Report 0 No Field Questions 1 PI Field Questions 2 Answered by Field Crew 6 Not Accessible (per Field Crew) AIS_OID This is the original unique polygon number that the field crew used, and so it is also the plot number that was assigned to the polygon. This is sometimes the number used when referring to a polygon # in the AISComment_AA field. Marin County Open Space District Vegetation Mapping Report PostAAScoresAIS This is where the polygon was scored after being reviewed by AIS. Marin County Open Space District Vegetation Mapping Report AISComment Contains any pertinent information regarding the plot data findings and the PostAAScoresAIS field. Marin County Open Space District Vegetation Mapping Report PostImageryChanges 0 if there are no changes on the ground after the imagery was taken; 1 if there have been changes. Marin County Open Space District Vegetation Mapping Report PostImageryChangesComment If there has been a change on the ground since the imagery was taken, then it is noted in the PostImageryChanges field and the details are documented in this field. Marin County Open Space District Vegetation Mapping Report UID Unique identifier assigned to each polygon for reference purposes. California Dept. of Fish and Wildlife, Vegetation Classification and Mapping Program CALVEGNAME A crosswalk to the CalVeg vegetation system. http://www.fs.fed.us/r5/rsl/projects/classification/system.shtml CALVEGCODE A crosswalk to the CalVeg vegetation system. http://www.fs.fed.us/r5/rsl/projects/classification/system.shtml CWHRTYPE Crosswalk to the California Wildlife Habitat Relationship system. http://www.dfg.ca.gov/biogeodata/cwhr/ CWHRCODE Crosswalk to the California Wildlife Habitat Relationship system. http://www.dfg.ca.gov/biogeodata/cwhr/ GLOBALRANK The global rarity rank of the plant community mapped (only for alliances) G1 and S1: Fewer than 6 viable occurrences worldwide and/or 2000 acres; G2 and S2: 6-20 viable occurrences worldwide and/or 2000-10,000 acres; G3 and S3: 21-100 viable occurrences worldwide and/or 10,000-50,000 acres; G4 and S4: Greater than 100 viable occurrences worldwide and/or greater than 50,000; G5 and S5: Community demonstrably secure due to secure worldwide and statewide. STATERANK The state rarity rank of the plant community mapped (only for alliances) G1 and S1: Fewer than 6 viable occurrences worldwide and/or 2000 acres; G2 and S2: 6-20 viable occurrences worldwide and/or 2000-10,000 acres; G3 and S3: 21-100 viable occurrences worldwide and/or 10,000-50,000 acres; G4 and S4: Greater than 100 viable occurrences worldwide and/or greater than 50,000; G5 and S5: Community demonstrably secure due to secure worldwide and statewide. California Department of Fish and Wildlife, Vegetation Classification and Mapping Program RARE Alliances and associations with state ranks of S1-S3 are considered rare. California Department of Fish and Wildlife, Vegetation Classification and Mapping Program Y Rare N Not Rare U Unknown CACODE California Natural Community Codes - unique code assigned to alliances and associations. California Department of Fish and Wildlife, Vegetation Classification and Mapping Program NVCSALLIANCE The standardized name for the Alliance within the National Vegetation Classification that the vegetation type corresponds to as adapted for California from "A Manual of California Vegetation, 2nd Edition" (Sawyer et. al. 2009), Appendix 3, pp. 1227-1240 Sawyer, J.O., Todd Keeler-Wolf and Julie Evans. 2009. A Manual of California Vegetation, 2nd Ed., Appendix 3 - "The National Vegetation Classification Hierarchy as Applied to California Vegetation", pp. 1227-1240 NVCSGROUP The standardized name for the Group within the National Vegetation Classification that the vegetation type corresponds to as adapted for California from "A Manual of California Vegetation, 2nd Edition" (Sawyer et. al. 2009), Appendix 3, pp. 1227-1240 Sawyer, J.O., Todd Keeler-Wolf and Julie Evans. 2009. A Manual of California Vegetation, 2nd Ed., Appendix 3 - "The National Vegetation Classification Hierarchy as Applied to California Vegetation", pp. 1227-1240 NVCSMG The standardized name for the Macrogroup within the National Vegetation Classification that the vegetation type corresponds to as adapted for California from "A Manual of California Vegetation, 2nd Edition" (Sawyer et. al. 2009), Appendix 3, pp. 1227-1240 Sawyer, J.O., Todd Keeler-Wolf and Julie Evans. 2009. A Manual of California Vegetation, 2nd Ed., Appendix 3 - "The National Vegetation Classification Hierarchy as Applied to California Vegetation", pp. 1227-1240 Acres GIS-calculated area measurements of each mapped polygon. ESRI Positive real numbers that are automatically generated. Hectares GIS-calculated area measurements of each mapped polygon. ESRI Positive real numbers that are automatically generated. 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. Entity and Attribute Overview Note: certain fields have been added by the Department of Fish and Wildlife's Vegetation Classification and Mapping Program. These include crosswalks to the Wildlife Habitat Relationships and CalVeg classification systems, Global and State Ranks, CaCode and the fields relating the mapping units to the National Vegetation Classification System as it is described for California in the 2nd edition of the Manual of California Vegetation. Macrogroups may differ from the original vegetation classification. The original classification follows the nested hierarchy of the NVC (Federal Geographic Data Committee 2008) while this map follows the NVC as adapted for California from "A Manual of California Vegetation, 2nd Edition" (Sawyer et. al. 2009), Appendix 3, pp. 1227-1240. 20221215 Vegetation Classification and Mapping Program (VegCAMP) VegCAMP@wildlife.ca.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time