Vegetation - Suisun Marsh, 2006 [ds500]

SDE Feature Class

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Tags
San Francisco Bay Delta, wetland, land cover, environment, biota, Bay Delta, Suisun Marsh, Vegetation, Solano County, tidal, California, marsh


Summary

This is part of an ongoing monitoring project that the Biogeographic Data Branch of the California Department of Fish and Wildlife (DFW), in collaboration with the Department of Water Resources and the DFW Water Branch, started in 1999 to track changes in the Suisun Marsh vegetation over time. This is the third update since the original map was made in 1999.

Description

Vegetation delineations based on photo interpretation and formal vegetation classification plus change detection.

Credits

Vegetation Classification and Mapping Program (VegCAMP), Department of Fish and Wildlife.

Use limitations

DFW 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 Diana Hickson by email or by phone at 916-327-5956.

Extent

West -122.136642 East -121.850054
North 38.248310 South 38.038416

Scale Range

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource environment, biota


* Content type Downloadable Data


Place keywords San Francisco Bay Delta, Bay Delta, Suisun Marsh, Solano County, California

Theme keywords wetland, land cover, Vegetation, tidal, marsh

Theme keywords environment, biota

Thesaurus
Title ISO 19115 Topic Category




Citation

* Title DS0500_20140825
Publication date 2014-08-22


Presentation formats digital map
FGDC geospatial presentation format vector digital data


Citation Contacts

Responsible party
Organization's name Rachelle Boul, Vegetation Classification and Mapping Program (VegCAMP), Department of Fish & Wildlife
Contact's role originator


Resource Details

Dataset languages English(UNITED STATES)


Status completed
Spatial representation type vector


Supplemental information
Orthorectified, true color imagery was flown in June 2006 to mimic as close as possible the June 1999 and June 2003 Suisun imagery time frame and plant phenology. This imagery was received as 427 high quality, individual, flight line ortho-photographs. The aerial imagery was interpreted and changes were made to the vegetation polygon shapefile using ArcMap 9.2 (ESRI). The criteria for a polygon to be considered "changed" were first laid out in the change detection report for 2003 (Vaghti and Keeler-Wolf 2004), and are repeated here: The following changes were considered significant and consistently interpretable, and were assessed: " A greater than 20% change in acreage of an exiting small polygon (<1 acre) " A greater than 10% change in acreage of a mid-sized polygon (1-5 acres) " A greater than 5% change in a large polygon (>5 acres) " A type conversion of a vegetation polygon dominated by perennial species. Type conversion, as defined here, occurs when a previously mapped vegetation type dominated by perennial species has changed based on the decision rules set forth in the vegetation mapping unit key defined in Table 5 of Vegetation Mapping of Suisun Marsh, Solano County (Keeler-Wolf et al. 2000), or when an annual species dominated vegetation type is converted to a perennial vegetation type. " A persistent physical change has altered any vegetation polygon and partially or entirely replaced it with a non-vegetated area (non-vegetated areas include buildings, dredged ditches, new levees, roads, or other human engineered structures). " A change in management style, which includes a conversion or restoration from an actively managed situation (annual burning, disking, plowing, flooding, or other management practice which annually disturbs the vegetation) to a passively managed, or un-managed, situation. The following changes were considered non-significant and/or unreliably interpretable and were not assessed: " Annual to annual type conversion were not considered because of the vagaries of climate on annual vegetation. Appendix 2 highlights these excluded types in yellow. " Polygons that are regularly heavily managed by annual burning, disking, flooding, or other means were not considered. These changes, unless they show some direction (e.g., from passive management to active, or vice versa), are considered regular management perturbations and maintain the same general vegetation pattern through regular disturbance. A copy of the 2003 vegetation polygon shapefile was made and modified for the 2003-2006 change detection and then it was linked to a new 2006 Microsoft Access table for data entry. For consistency the attributes and vegetation types for the 2006 change detection remained the same as in 2003. When changes in size or shape of polygons were detected, they were cut using the "Cut Polygon Features" task and then merged using the "Merge" option in ArcMap. 250 releve field samples were collected in 1999. 250 rapid assessment field samples were collected in 2000. 99 rapid assessment field samples were collected in 2003. 98 of the origional 250 releves were resampled in 2006. The complete report can be viewed at: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=48107. The attributes described in the 2006 Suisun Marsh Vegetation Change Detection report differ slightly to what is actually presented in this dataset. All reference to the 1999 and 2003 vegetation maps (see Appendix 1 in the report) have been removed from this dataset, which now only reflects data for the 2006 Suisun Marsh vegetation. This is the third update since the orginal map was made in 1999. The first update was conducted one year after the initial aerial photo-interpretation (see ds161), is described in Vegetation Mapping of Suisun Marsh, Solano County (Keeler-Wolf and Vaghti, 2000): https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=24570. The second update, done three years later in 2003 (see ds162), is summarized in Suisun Marsh Vegetation Mapping Change Detection 2003 (Vaghti and Keeler-Wolf 2004): https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=18254. The fourth update, done in 2009 (see ds711), is summarized in 2009 Vegetation Map Update for Suisun Marsh, Solano County, California (Boul and Keeler-Wolf 2012): https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=48108. The fifth update was done in 2012 (the vegetation map and report are not yet available to the public).
* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.1.3497


Credits
Vegetation Classification and Mapping Program (VegCAMP), Department of Fish and Wildlife.
ArcGIS item properties
* Name DS0500_20140825
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Geographic extent
Bounding rectangle
West longitude -122.136642
East longitude -121.850054
South latitude 38.038416
North latitude 38.24831

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -122.136642
* East longitude -121.850054
* North latitude 38.248310
* South latitude 38.038416
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -13596188.789700
* East longitude -13564286.009500
* South latitude 4584854.117000
* North latitude 4614563.312700
* Extent contains the resource Yes

Resource Points of Contact

Point of contact
Individual's name Todd Keeler-Wolf
Organization's name California Department of Fish and Wildlife
Contact's position Senior Vegetation Ecologist, Vegetation Classification and Mapping Program
Contact's role point of contact


Contact information
Phone
Voice 916 324-6857
Fax 916 324-0475

Address
Type both
Delivery point 1807 13th Street, Suite 202
City Sacramento
Administrative area CA
Postal code 95811
Country US
e-mail address Todd.Keeler-Wolf@wildlife.ca.gov



Resource Constraints

Legal constraints
Limitations of use
See access and use constraints information.
Constraints
Limitations of use
DFW 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 Diana Hickson by email or by phone at 916-327-5956.

Spatial Reference

ArcGIS coordinate system
* Type Projected
* Geographic coordinate reference GCS_WGS_1984
* Projection WGS_1984_Web_Mercator_Auxiliary_Sphere
* Coordinate reference details
Projected coordinate system
Well-known identifier 102100
X origin -20037700
Y origin -30241100
XY scale 10000
Z origin 0
Z scale 1
M origin 0
M scale 1
XY tolerance 0.001
Z tolerance 0.001
M tolerance 0.001
High precision true
Latest well-known identifier 3857
Well-known text PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]

Reference system identifier
* Value 3857
* Codespace EPSG
* Version 8.2.6


Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS0500_20140825
* Object type composite
* Object count 26855



ArcGIS Feature Class Properties
Feature class name DS0500_20140825
* Feature type Simple
* Geometry type Polygon
* Has topology FALSE
* Feature count 26855
* Spatial index TRUE
* Linear referencing FALSE



Data Quality

Lineage

Process step
Description
In keeping with the monitoring focus of the Suisun Marsh Vegetation Surveys (Keeler-Wolf et al. 2000), in 2006, 100 of the original 198 Suisun Marsh vegetation plots were selected to be revisited for the first time since their establishment in the summer of 1999. To enable regular re-sampling into the future without any access issues, only those plots located on DFG land, Rush Ranch, or other publicly-accessible lands were considered for resampling. Of these plots, 100 were selected by the DFG Vegetation Classification and Mapping Program to capture the diversity of vegetation types that represent the Marsh's vegetation as a whole. Due to the construction of the new Benicia-Martinez Bridge, two of the selected 100 plots are no longer in existence. Therefore, 98 plots were resampled. Each plot was located based on careful interpretation of GPS coordinates, field sample photos, aerial photos, and plot descriptions provided in the original 1999 field data. For more detailed information on the field data collection protocol and analysis refer to The Vegetation of Suisun Marsh, Solano County, California: First Permanent Plot Resample Study 1999 vs. 2006 (Boul et al. 2007).




Process step
Description
A copy of the 2003 vegetation polygon shapefile was made and modified for the 2003-2006 change detection and then it was linked to a new 2006 Access table for data entry. For consistency the attributes (Table 1) and vegetation types (Table 2) for the 2006 change detection remained the same as in 2003. When a change in size of shape of polygons were detected, they were cut using the "Cut Polygon Features" task and they were merged using the "Merge" option in ArcMap




Process step
Description
The criteria for a polygon to be considered "changed" is described in the change detection report for 2003 (Vaghti and Keeler-Wolf 2004). The following changes were considered significant and consistently interpretable, and were assessed: o A greater than 20% change in acreage of an exiting small polygon (<1 acre) o A greater than 10% change in acreage of a mid-sized polygon (1-5 acres) o A greater than 5% change in a large polygon (>5 acres) o A type conversion of a vegetation polygon dominated by perennial species. Type conversion, as defined here, occurs when a previously mapped vegetation type dominated by perennial species has changed based on the decision rules set forth in the vegetation mapping unit key defined in Table 5 of Vegetation Mapping of Suisun Marsh, Solano County (Keeler-Wolf et al. 2000), or when an annual species dominated vegetation type is converted to a perennial vegetation type. o A persistent physical change has altered any vegetation polygon and partially or entirely replaced it with a non-vegetated area (non-vegetated areas include buildings, dredged ditches, new levees, roads, or other human engineered structures). o A change in management style, which includes a conversion or restoration from an actively managed situation (annual burning, disking, plowing, flooding, or other management practice which annually disturbs the vegetation) to a passively managed, or un-managed, situation.


Source data
Relationship to the process step used


Source citation
Alternate titles Vaghti, M. and T. Keeler-Wolf. 2004. Suisun Marsh Vegetation Mapping Change Detection 2003. Unpublished administrative report on file at Biogeographic Data Branch, California Department of Fish and Game, Sacramento








Process step
Description
Orthorectified, true color imagery was flown in June 2006 to mimic as close as possible the 1999 and 2003 Suisun imagery time frame and plant phenology. This imagery was received as 427 high quality, individual, flight line orthos. The aerial imagery was interpreted and changes were made to the vegetation polygon shapefile using ArcMap 9.2.




Process step
Description
Data projected from original State Plane Coordinate System, NAD83 to California Albers NAD83




Geoprocessing history

Distribution

Distributor
Contact information
Individual's name Todd Keeler-Wolf
Organization's name CA Dept. of Fish and Game, Biogeographic Data Branch
Contact's position Senior Vegetation Ecologist
Contact's role distributor


Contact information
Phone
Voice 916-324-6857
Fax 916-324-0475

Address
Type both
Delivery point 1807 13th Street
City Sacramento
Administrative area CA
Postal code 95811
Country US
e-mail address tkwolf@dfg.ca.gov





Distribution format
* Name SDE Feature Class


Transfer options
Online source
Location http://bios.dfg.ca.gov

Online source
Location ftp://ftp.dfg.ca.gov/GIS/BIOS/Public_Datasets/500_599/ds500.zip

Fields

Details for object DS0500_20140825
* Type Feature Class
* Row count 26855
Definition
Suisun marsh vegetation 2003 in State Plane II, NAD 83, Feet with attributes


Field CWHRCODE
* Alias CWHRCODE
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
A crosswalk to the California Wildlife Habitat Relationships system. Note that there is usually a one-to-many relationship between CWHR and NVCS. See http://www.dfg.ca.gov/biogeodata/cwhr/ .


Field CALVEGCODE
* Alias CALVEGCODE
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
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 .


Field CALVEGNAME
* Alias CALVEGNAME
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
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 .


Field RARE
* Alias RARE
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Rarity of the vegetation type. Alliances and associations with state ranks of S1-S3 are considered rare.
List of values
Value N
Description Not Rare


Value U
Description Unknown


Value Y
Description Rare




Field NVCSMG
* Alias NVCSMG
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
The standardized name for the macrogroup within the National Vegetation Classification System. See http://usnvc.org/ .


Field CWHRTYPE
* Alias CWHRTYPE
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
A crosswalk to the California Wildlife Habitat Relationships system. Note that there is usually a one-to-many relationship between CWHR and NVCS. See http://www.dfg.ca.gov/biogeodata/cwhr/ .


Field Hectares
* Alias HECTARES
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
GIS-calculated area measurements of each mapped polygon.


Field MgmtRegion
* Alias MgmtRegion
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Each polygon falls within one of the four management Regions described in the Suisun Marsh Habitat Management, Preservation, and Restoration Plan ( http://www.usbr.gov/mp/nepa/nepa_projdetails.cfm?Project_ID=781) and is attributed accordingly.
List of values
Value 3
Description Region 3


Value 4
Description Region 4


Value 2
Description Region 2


Value 1
Description Region 1




Field ACRES
* Alias ACRES
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
GIS-calculated area measurements of each mapped polygon.


Field UID
* Alias UID
* Data type String
* Width 10
* Precision 0
* Scale 0
Field description
Unique identifier for each polygon.


Field Ht_06
* Alias HT_06
* Data type Integer
* Width 4
* Precision 10
* Scale 0
Field description
Assessed height class in 2006.
List of values
Value 5
Description 5-10m


Value 2
Description 0.5-1m


Value 6
Description >10m


Value 1
Description <0.5m


Value 0
Description N/A


Value 3
Description 1-2m


Value 4
Description 2-5m




Field Dist_06
* Alias DIST_06
* Data type Integer
* Width 4
* Precision 10
* Scale 0
Field description
Assessed disturbance class in 2006.
List of values
Value 3
Description Medium


Value 2
Description Low


Value 1
Description Not evident


Value 4
Description High


Value 0
Description N/A




Field NVCSLEVEL
* Alias NVCSLEVEL
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
The standardized level of the vegetation description used in the National Vegetation Classification System (see http://usnvc.org/) .


Field CACODE
* Alias CACODE
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
California Natural Community Codes - unique code assigned to alliances and associations.


Field ID_06
* Alias ID_06
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
How assessment was determined in 2006.
List of values
Value U
Description updated


Value P
Description photo interpretation


Value R
Description reconnaissance


Value S06
Description sampled in 2006 (Releve)




Field STATERANK
* Alias STATERANK
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
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 acres; G5 and S5: Community demonstrably secure due to secure worldwide and statewide abundance. See: http://www.natureserve.org/publications/ConsStatusAssess_RankMethodology.jsp .


Field Habitat
* Alias HABITAT
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Identifies the areas within the Marsh that are tidally influenced versus areas that are leveed (or managed).
List of values
Value 2
Description Leveed


Value 1
Description Tidally influenced


Value 3
Description Slough




Field MAPCLASSCODE
* Alias MAPCLASSCODE
* Data type Integer
* Width 4
* Precision 10
* Scale 0
Field description
Code for each vegetation type mapped. MapClassCodes are defined in the MapClass field.


Field Shape
* Alias Shape
* Data type Geometry
* Width 4
* Precision 0
* Scale 0
Field description
Feature geometry.
Description source
ESRI
Description of values
Coordinates defining the features.




Field NVCSNAME
* Alias NVCSNAME
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
The standardized name of the vegetation description used in the National Vegetation Classification System (see http://usnvc.org/) . Since the NVCS does not have categories for human land use or otherwise unvegetated land, those descriptions were drawn from the California Wildlife Habitat Relationship.


Field COVER_06
* Alias COVER_06
* Data type Integer
* Width 4
* Precision 10
* Scale 0
Field description
Assessed cover class in 2006.
List of values
Value 6
Description >10m


Value 4
Description 2-5m


Value 5
Description 5-10


Value 3
Description 1-2m


Value 2
Description 0.5-1m


Value 0
Description N/A


Value 1
Description <0.5m




Field OBJECTID
* Alias OBJECTID
* Data type OID
* Width 4
* Precision 10
* Scale 0
Field description
Internal feature number.
Description source
ESRI
Description of values
Sequential unique whole numbers that are automatically generated.




Field NVCSGroup
* Alias NVCSGroup
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
The standardized name for the group within the National Vegetation Classification System. See http://usnvc.org/ .


Field MAPCLASS
* Alias MAPCLASS
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
The finest level of vegetation type mapped (alliance, association, group or macrogroup); or land use for polygons that are not natural vegetation, per the mapping classification.


Field GLOBALRANK
* Alias GLOBALRANK
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
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 acres; G5 and S5: Community demonstrably secure due to secure worldwide and statewide abundance. See: http://www.natureserve.org/publications/ConsStatusAssess_RankMethodology.jsp .


Field NVCSAlliance
* Alias NVCSAlliance
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
The standardized name for the alliance within the National Vegetation Classification System. See http://usnvc.org/ .


Field Shape.STArea()
* Alias Shape.STArea()
* Data type Double
* Width 0
* Precision 0
* Scale 0




Field Shape.STLength()
* Alias Shape.STLength()
* Data type Double
* Width 0
* Precision 0
* Scale 0






Metadata Details

Metadata language English(UNITED STATES)
Metadata character set utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata dataset
Scope name * dataset


* Last update 2014-08-25


ArcGIS metadata properties
Metadata format ArcGIS1.0
Metadata style FGDC CSDGM Metadata
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2014-08-2507:27:44
Last modified in ArcGIS for the item 2014-26-2577NnS300


Automatic updates
Have been performed No
Last update 2014-08-2507:24:54


Metadata Contacts

Metadata contact
Individual's name Rachelle Boul
Organization's name California Department of Fish and Wildlife
Contact's position Environmental Scientist, Vegetation Classification and Mapping Program
Contact's role point of contact


Contact information
Phone
Voice 916-324-9718
Fax 916 324-0475

Address
Type both
Delivery point 1807 13th Street, Suite 202
City Sacramento
Administrative area CA
Postal code 95814
Country US
e-mail address rboul@dfg.ca.gov



Thumbnail and Enclosures

Enclosure
Enclosure type File
Description of enclosure original metadata
Original metadata document, which was translated yes
Source metadata format fgdc