Vernal Pool Distribution - Central Valley, 2005 [ds650]

SDE Feature Class

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Tags
Hogwallows, San Joaquin Valley, biota, environment, Great Valley, 2005, Sacramento Valley, California, Vernal Pools


Summary

Map showing the distribution of vernal pools in the Great Valley (California) as of publication of the Recovery Plan for Vernal Pool Ecosystems of California and Southern Oregon (U.S. Fish and Wildlife Service, 2005).

Description

We mapped vernal pool distribution within a 21.4 million acre area surrounding the Great Valley from 2005 National Agricultural Imaging Program (NAIP) county photomosaics using ESRI ArcMap 9.x in a double-blind protocol. Each mapped polygon was scored for classes of habitat cover, habitat density, habitat diversity, disturbance cover, and disturbance intensity. Ground truth sampled 25% of the polygons we drew; the double blind protocol lowered our error rate to about 2 percent. We mapped 807,820 acres of vernal pool landscape in 1,909 polygons and present various tabular summaries of polygon number and acreage by recorded attribute. We overlaid our results with a map of Core Recovery Areas (CRAs), finding 452,012 acres within the CRAs, and an additional 120,137 acres immediately contiguous to the CRAs.

Credits

Carol W. Witham, Robert F. Holland and John Vollmar. 2013. 2005 Great Valley Vernal Pool Map, Plus Merced, Placer and Sacramento County Losses 2005-2010. Sacramento, CA. Report prepared for the U.S. Fish and Wildlife Service's and Bureau of Reclamation's CVPIA Habitat Restoration Program under Grant Agreement No. 80270-A-G509 with the USFWS.

Use limitations

Credit authors

Extent

West -122.552288 East -118.955640
North 40.673418 South 35.399003

Scale Range
Maximum (zoomed in) 1:5,000
Minimum (zoomed out) 1:150,000,000

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource biota, environment


* Content type Downloadable Data


Place keywords San Joaquin Valley, Great Valley, Sacramento Valley, California

Temporal keywords 2005

Theme keywords Hogwallows, Vernal Pools

Theme keywords biota, environment

Thesaurus
Title ISO 19115 Topic Category




Citation

Title Vernal Pool Distribution - Central Valley, 2005 [ds650]
Publication date 2013-02-2500:00:00


Presentation formats * digital map


Citation Contacts

Responsible party
Contact's role publisher


Contact information
Address
Delivery point Sacramento, CA



Responsible party
Organization's name Robert F. Holland
Contact's role originator


Responsible party
Organization's name Carol W. Witham
Contact's role originator


Responsible party
Organization's name John Vollmar
Contact's role originator


Resource Details

Dataset languages English(UNITED STATES)


Status completed
Spatial representation type * vector


Supplemental information
Polygons were sketched onto 2005 NAIP imagery by two independent mappers: Carol W. Witham and Robert F. Holland. Maps were reconciled by the mappers on a polygon-by-polygon basis with the best boundaries and attributes for each discussed and chosen before moving onto the next polygon. Note: For an associated dataset showing changes between 2005 and 2010 in some counties please see Vernal Pool Distribution, Merced, Placer & Sac. Counties, 2010 [ds780].
* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.1.7333


Credits
Carol W. Witham, Robert F. Holland and John Vollmar. 2013. 2005 Great Valley Vernal Pool Map, Plus Merced, Placer and Sacramento County Losses 2005-2010. Sacramento, CA. Report prepared for the U.S. Fish and Wildlife Service's and Bureau of Reclamation's CVPIA Habitat Restoration Program under Grant Agreement No. 80270-A-G509 with the USFWS.
ArcGIS item properties
* Name Vernal Pool Distribution - Central Valley, 2005 [ds650]
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Description
ground condition
Temporal extent
Date and time 2005-01-01

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -122.552288
* East longitude -118.955640
* North latitude 40.673418
* South latitude 35.399003
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -13642458.284400
* East longitude -13242081.312700
* South latitude 4218237.105500
* North latitude 4964289.520200
* Extent contains the resource Yes

Resource Points of Contact

Point of contact
Individual's name Carol W. Witham
Contact's position Co-author
Contact's role point of contact


Contact information
Phone
Voice 916-452-5440

Address
Type both
Delivery point 1141 37th Street
City Sacramento
Administrative area CA
Postal code 95816-5415
Country US
e-mail address carolwwitham@gmail.com



Resource Maintenance

Resource maintenance
Update frequency as needed


Resource Constraints

Legal constraints
Other constraints
Public domain
Security constraints
Classification unclassified


Constraints
Limitations of use

Credit authors


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 2
M tolerance 2
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 8.8(9.3.1.2)


Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS0650_20130225
* Object type composite
* Object count 1909



ArcGIS Feature Class Properties
Feature class name DS0650_20130225
* Feature type Simple
* Geometry type Polygon
* Has topology FALSE
* Feature count 1909
* Spatial index TRUE
* Linear referencing FALSE



Data Quality

Scope of quality information
Resource level dataset




Data quality report - Absolute external positional accuracy
Dimension horizontal


Measure description
Map was produced using heads up digitizing on 2005 NAIP county mosaic imagery. The mapping was done independently by Carol W. Witham and Robert F. Holland. As each county was completed, the two mappers met to reconcile the maps. This reconciliation was done on a polygon-by-polygon basis. Any discrepancies were discussed and the best fitting polygon shape and attribution were determined for each polygon. This reconciliation resulted in each polygon being reviewed at least three times (in the few cases where one of the mappers missed the feature), but usually four times.


Quantitative test results
Value Minimum Mapping Unit


Evaluation method
No minimum mapping unit was established prior to mapping. The map therefore suffers from shortfalls related to economy of scale. In small polygons, the mappers were more likely to subtract small cutouts for buildings, corrals or staging areas. In larger polygons, the same size cutout was often overlooked simply because it was small in proportion to the landscape being mapped.




Data quality report - Absolute external positional accuracy


Geoprocessing history

Process
Process name
Date 2012-09-1215:20:19
Tool location C:\Program Files (x86)\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures
Command issued
Include in lineage when exporting metadata No


Process
Process name
Date 2012-09-1215:28:06
Tool location C:\Program Files (x86)\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures
Command issued
Include in lineage when exporting metadata No


Process
Process name
Date 2012-09-1216:09:21
Tool location C:\Program Files (x86)\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Process name
Date 2013-02-2514:11:38
Tool location C:\Program Files (x86)\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Process name
Date 2013-06-2116:06:50
Tool location c:\program files (x86)\arcgis\desktop10.1\ArcToolbox\Toolboxes\Data Management Tools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Distribution

Distribution format
* Name SDE Feature Class


Transfer options
Online source
Location ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/600_699/ds650.zip

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

Online source
Location http://www.vernalpools.org/

Fields

Details for object DS0650_20130225
* Type Feature Class
* Row count 1909
Definition
Polygons representing vernal pool landscapes and individual vernal pools
Definition source
Witham/Holland


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 SHAPE
* Alias FEATURE
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
* Field description
Feature geometry.
* Description source
ESRI
* Description of values
Coordinates defining the features.




Field FEATURE
* Alias COVER_VPs
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Vernal pool matrix or individual pool
Description source
Witham/Holland
List of values
Value 0
Description Vernal pool matrix


Value 1
Description Individual vernal pool




Field COVER_VPs
* Alias DENSITY_VPs
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Cover of vernal pools by cover class
Description source
Witham/Holland
List of values
Value 0
Description <2% cover of vernal pools


Value 1
Description 2-5% cover of vernal pools


Value 2
Description 5-10% cover of vernal pools


Value 3
Description >10% cover of vernal pools


Value 4
Description 100% (individual pool / stockpond)




Field DENSITY_VPs
* Alias DIVERSITY_VPs
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Qualitative density assessment
Description source
Witham/Holland
List of values
Value 0
Description Low


Value 1
Description Medium


Value 2
Description High




Field DIVERSITY_VPs
* Alias NUMBER_LargePools
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Qualitative diversity assessment
Description source
Witham/Holland
List of values
Value 0
Description Low


Value 1
Description Medium


Value 2
Description High




Field NUMBER_LargePools
* Alias DISTURBANCE_Area
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Number of large pools per polygon
Description source
Witham/Holland
List of values
Value 0
Description None in polygon


Value 1
Description <1 per 640 acres


Value 2
Description 1-3 per 640 acres


Value 3
Description 4+ per 640 acres




Field DISTURBANCE_Area
* Alias DISTURBANCE_Type
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Cover of disturbance by cover class
Description source
Witham/Holland
List of values
Value 0
Description <1% of polygon


Value 1
Description 1-5% polygon


Value 2
Description 5-25% of polygon


Value 3
Description 25-50% of polygon


Value 4
Description 50-99% of polygon


Value 5
Description 100% of polygon




Field DISTURBANCE_Type
* Alias DISTURBANCE_Intensity
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Dominant type of disturbance
Description source
Witham/Holland
List of values
Value 0
Description None / unknown


Value 1
Description Plowing, disking or grading


Value 2
Description OHV use


Value 3
Description Ranch roads


Value 4
Description Paved roads


Value 5
Description Ag runoff (altered hydrology)


Value 6
Description Agricultural residential


Value 7
Description Managed wetlands (duck ponds)


Value 8
Description Mitigation banks (created vernal pools)




Field DISTURBANCE_Intensity
* Alias HABITAT_Notes
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Qualitative assessment of intensity of disturbance
Description source
Witham/Holland
List of values
Value 0
Description Low


Value 1
Description Medium


Value 3
Description High




Field HABITAT_Notes
* Alias MAPPING_Notes
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Notes on habitat observations
Description source
Witham/Holland


Field MAPPING_Notes
* Alias COUNTY
* Data type String
* Width 25
* Precision 0
* Scale 0
Field description
Notes used during heads up digitizing
Description source
Witham/Holland


Field COUNTY
* Alias Visited
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
County in which habitat polygon occurs
Description source
Witham/Holland
* Description of values
Coordinates defining the features.




Field Visited
* Alias Shape
* Data type Geometry
* Width 4
* Precision 0
* Scale 0
Field description
Annotation of whether or not a polygon was visited during ground truth
Description source
Witham/Holland
List of values
Value 0
Description Not visited


Value 1
Description Visited


* Description of values
Coordinates defining the features.




Field Shape
* Alias Acres
* Data type Double
* Width 8
* Precision 38
* Scale 8
* Field description
Feature geometry.
* Description source
ESRI
* Description of values
Coordinates defining the features.




Field Acres
* Alias Observed
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Acres calculated from Shape_area
Description source
Witham/Holland
Description of values
Calculated as Shape_area/4046.825 m2/acre




Field Observed
* Alias Shape.STLength()
* Data type Double
* Width 0
* Precision 0
* Scale 0
Field description
Observed condition during ground truth
Description source
Witham/Holland
List of values
Value 0
Description Not visited


Value 1
Description Habitat extant


Value 2
Description Converted to hay ground


Value 3
Description Converted to orchard


Value 4
Description Converted to vineyard


Value 5
Description No vernal pools, but clay flats (REMOVED)


Value 6
Description Bare plowed ground


Value 7
Description Lots of topo, no vernal pools (REMOVED)


Value 8
Description Converted to alfalfa


Value 9
Description Alkali sink, no pools observed from road


Value 10
Description Converted to intensive ag


Value 11
Description No vernal pool habitat (REMOVED)


Value 12
Description Converted to urban/commercial


* Description of values
Positive real numbers that are automatically generated.




Field GT_Notes
* Alias Shape.STArea()
* Data type Double
* Width 0
* Precision 0
* Scale 0
Field description
Notes taken during ground truth
Description source
Witham/Holland


Field Shape.STLength()
* Alias GT_Notes
* Data type String
* Width 50
* Precision 0
* Scale 0






Overview Description


References

Aggregate Information
Association type cross reference


Aggregate resource name
Title 2005 Great Valley Vernal Pool Map, plus Merced, Placer and Sacramento County losses 2005-2010


Responsible party
Contact's role publisher


Contact information
Address
Delivery point Sacramento, CA



Responsible party
Organization's name Robert F. Holland
Contact's role originator


Responsible party
Organization's name Carol W. Witham
Contact's role originator


Responsible party
Organization's name John Vollmar
Contact's role originator




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 2017-11-13


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 2014-03-0617:21:09
Last modified in ArcGIS for the item 2017-11-1310:26:25


Automatic updates
Have been performed Yes
Last update 2017-11-1310:26:05


Metadata Contacts

Metadata contact
Individual's name Carol W. Witham
Contact's position Co-author
Contact's role point of contact


Contact information
Phone
Voice 916-452-5440

Address
Type both
Delivery point 1141 37th Street
City Sacramento
Administrative area CA
Postal code 95816-5415
Country US
e-mail address cwitham@ncal.net



Metadata Constraints

Security constraints
Classification unclassified


Thumbnail and Enclosures

Thumbnail

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