California Department of Fish and Wildlife (CDFW) 20001230 vector digital data https://www.wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/100_199/ds163.zip This vegetation mapping project of Suisun Marsh blends ground-based classification, aerial photo interpretation, and GIS editing and processing. The method is based on the development of a quantitative vegetation classification, which is used to describe the vegetation map units of the marsh. The classification is defined to meet the specifications of the National and State standards for vegetation classification, but is related through a cross-walking table to other standard classifications in use locally or statewide ( https://nrmsecure.dfg.ca.gov/FileHandler.ashx?DocumentID=42580 ). The Suisun Marsh is one of the largest contiguous brackish marshes remaining in the United States. In 1977 the Suisun Marsh Preservation Act was legislated and required that the Suisun Marsh be managed for its wildlife resources. As part of the monitoring program in the Plan of Protection, a Triennial Vegetation Survey was developed to document the overall vegetation composition of the marsh and to monitor Salt Marsh Harvest Marsh (SMHM) habitat by the use of aerial photography in combination with ground verification. However, there were some concerns about the methodology used and the lack of useful maps from the 1988, 1991, and 1994 surveys. In 1996, an interagency technical committee was convened to review the current survey methodology and recommended a more detailed monitoring system for vegetation changes within the marsh. Consequently, in July 1997 the committee agreed to implement a new survey methodology for the 1998 vegetation survey. The first survey was complete in 1999 (see ds160). This dataset contains the results of the change analysis when comparing the vegetation maps from the year 1999 (see ds160) and the year 2000 (see ds162). Methods are available at: http://www.nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=42579. The survey methodology is designed to meet the goal of documenting changes in preferred habitat for the Salt Marsh Harvest Mouse, as well as gather the vegetation information in such a way that it can be used for a variety of other purposes. These may include: correlating management activities with vegetation changes; gathering data to support the use of a GIS format that will allow queries and overlaying of additional information such as soil type, ownership, and hydrology; and creation of a base map for future studies. The complete report for this dataset is available at: https://nrmsecure.dfg.ca.gov/FileHandler.ashx?DocumentID=42580. 20000101 ground condition Complete None planned -122.130920 -121.865701 38.242466 38.048528 None trend distribution census vegetation habitat attributes plant inventory abundance management planning floristic classification monitoring special status species ISO 19115 Topic Category environment inlandWaters biota None California Suisun Marsh 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. California Department of Fish and Wildlife (CDFW) Vegetation Classification and Mapping Program Program Lead unknown

1700 9th Street, 4th Floor

Sacramento CA 95811 US (916) 324-9765 VegCAMP@wildlife.ca.gov California Department of Fish and Wildlife (CDFW) Vegetation Classification and Mapping Program Program Lead unknown

1700 9th Street, 4th Floor

Sacramento CA 95811 US (916) 324-9765 VegCAMP@wildlife.ca.gov Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.1.7333 Edited original metadata by adding ISO keywords. 20070723 California Department of Fish and Game Kristina White bios@dfg.ca.gov Vector GT-polygon composed of chains 250 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 ds163 SHAPE Feature geometry. ESRI Coordinates defining the features. Shape_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. SHAPE_area Area of feature in internal units squared. ESRI Positive real numbers that are automatically generated. AREA_00 Area of each polygon in the year 2000, reported in square meters. PERIM_00 Perimeter of each polygon for the year 2000, reported in meters. POLY_ID A unique number for the individual digitized polygon, assigned by computer. Primary key used to link the database with the GIS coverage VEG_COD_99 vegetation code based on 1999 aerial photo interpretation; "000" assigned to newly created polygons. LEGEND_99 Description of VEG_COD_99 VEG_COD_00 vegetation code based on 2000 aerial photo interpretation. LEGEND_00 description of vegetation code based on 2000 aerial photo interpretation ACRES Acreage covered by each polygon in 2000. POLY_SIZE polygon size class sm <1 acre med 1-5 acres lg >5 acres CHANGE_CLA percent change in acreage for the polygon NOTES "change" indicates a true vegetation change; "mislabel" indicates a map update. HT_CODE The code used to designate the height of the dominant vegetation. 1 <.5m 2 0.5-1m 3 1-2m 4 2-5m 5 5-10m 6 >10m 7 Not applicable HEIGHT Height measured in meters COV_CODE The total cover of vegetation within the polygon. 1 Unvegetated (<2%) 2 Sparse (2-10%) 3 Open (10-25%) 4 Intermittent (25-50%) 5 Moderate (50-75%) 6 Dense (>75%) 7 Not applicable COVER_DESC Description of the total cover of vegetation within the polygon. This included cover by the association defining dominant plus all under story vegetation. Seven classes of total cover were recognized; Unvegetated (<2%), Sparse (2-10%), Open (10-25%), Intermittent (25-50%), Moderate (50-75%), Dense (>75%), Not applicable DIST_CODE The level of disturbance from management activities. 1 Not evident 2 Low 3 Medium 4 High 5 Not applicable DIST_ID Level of disturbance DIST_TYPE1 Type of disturbance DIST_TYPE2 Extent of disturbance DIST_TYPE3 Source of disturbance ID_METHOD The method used to determine the vegetation attributes. P Photo interpretation R Reconnaissance S Sampled WHO Which of the project team members assigned the attributes. CG Cynthia Graves KC Karen Converse MV Mehrey Vaghti QC_WHO Who completed quality control of attributes for the polygon. KC Karen Converse MV Mehrey Vaghti TKW Todd Keeler-Wolf HOLLAND Holland code number HOLLANDNAM Holland name for code number WHRNAME California Wildlife Habitat Relationships name for code WHR California Wildlife Habitat Relationships classification code Esri Coordinates defining the features. 20220325 California Department of Fish and Wildlife (CDFW) Vegetation Classification and Mapping Program Program Lead unknown

1700 9th Street, 4th Floor

Sacramento CA 95811 US (916) 324-9765 VegCAMP@wildlife.ca.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time