Natural Areas Small - California Essential Habitat Connectivity (CEHC) [ds1073]

SDE Feature Class

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Tags
connectivity conservation, linkage design, least-cost corridor, connectivity, California, corridor, essential connectivity areas, essential, natural landscape blocks, biota, habitat, linkage, environment


Summary

The Essential Connectivity Map shows a statewide network of 850 relatively intact Natural Landscape Blocks (ranging in size from 2,000 to about 3.7 million acres) connected by 192 Essential Connectivity Areas (Table 3.1). There are fewer Essential Connectivity Areas than Natural Landscape Blocks, because each Essential Connectivity Area serves to connect at least two, and as many as 15 Natural Landscape Blocks. Due to the broad, statewide nature of this map, and its focus on connecting very large blocks of mostly protected natural lands, the network omits many areas that are important to biological conservation. The purpose of the map is to focus attention on large areas important to maintaining ecological integrity at the broadest scale. Natural areas excluded from this broad-brush Essential Connectivity Network can therefore not be "written off" as unimportant to connectivity conservation or to sustaining California's natural heritage.

Description

The California Department of Transportation (Caltrans) and California Department of Fish and Game (CDFG) commissioned the California Essential Habitat Connectivity Project because a functional network of connected wildlands is essential to the continued support of California's diverse natural communities in the face of human development and climate change. The Essential Connectivity Map depicts large, relatively natural habitat blocks that support native biodiversity (Natural Landscape Blocks) and areas essential for ecological connectivity between them (Essential Connectivity Areas). This coarse-scale map was based primarily on the concept of ecological integrity, rather than the needs of particular species. Essential Connectivity Areas are placeholder polygons that can inform land-planning efforts, but that should eventually be replaced by more detailed Linkage Designs, developed at finer resolution based on the needs of particular species and ecological processes. It is important to recognize that even areas outside of Natural Landscape Blocks and Essential Connectivity Areas support important ecological values that should not be "written off" as lacking conservation value. Furthermore, because the Essential Habitat Connectivity Map was created at the statewide scale, based on available statewide data layers, and ignored Natural Landscape Blocks smaller than 2,000 acres squared, it has errors of omission that should be addressed at regional and local scales.

Credits

Use limitations

The user accepts sole responsibility for the correct interpretation of this report and the correct use of its accompanying data sets in environmental documents. The Essential Habitat Connectivity map delineates lands likely important to wildlife movement between large, mostly natural areas at the statewide scale based on available data and assumptions provided in this report. It omits small natural areas and does not reflect movement needs of particular species. It is a decision-support tool to be refined by finer-scale analyses and local linkage designs. DO NOT assume that lands outside Natural Landscape Blocks or Essential Connectivity Areas are unimportant to wildlife populations or movements.

Extent

West -124.456208 East -113.671163
North 42.064528 South 32.443111

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
Export to FGDC CSDGM XML format as Resource Description No

Place keywords California

Theme keywords Connectivity Conservation, Linkage Design, Least-cost Corridor, Connectivity, Corridor, Essential Connectivity Areas, Essential, Natural Landscape Blocks, Habitat, Linkage

Theme keywords biota, environment

Thesaurus
Title ISO 19115 Topic Category




Citation

Title Natural Areas Small - California Essential Habitat Connectivity (CEHC) [ds1073]
Publication date 2010-03-0100:00:00


Presentation formats * digital map


Citation Contacts

Responsible party
Organization's name California Department of Transportation (Caltrans) and California Department of Fish and Game (CDFG)
Individual's name Spencer, W.D., P. Beier, K. Penrod, K. Winters, C. Paulman, H. Rustigian-Romsos, J. Strittholt, M. Parisi, and A. Pettler
Contact's role originator


Responsible party
Individual's name Melanie Gogol-Prokurat
Organization's name California Department of Fish and Wildlife, Biogeographic Data Branch
Contact's role point of contact


Contact information
Phone
Voice (916) 324-9265

Address
Type postal
Delivery point 1700 9th Street
City Sacramento
Administrative area CA
Postal code 95811
e-mail address Melanie.Gogol-Prokurat@wildlife.ca.gov



Resource Details

Dataset languages English(UNITED STATES)
Dataset character set utf8 - 8 bit UCS Transfer Format


Status completed
Spatial representation type * vector


Supplemental information
The California Essential Habitat Connectivity Project report is available for download at http://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=18366 , http://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=18376 , http://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=18377 , and http://www.dot.ca.gov/hq/env/bio/program_efforts.htm
* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.1.7333


ArcGIS item properties
* Name Natural Areas Small - California Essential Habitat Connectivity (CEHC) [ds1073]
* Size 29.190
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Description
publication date
Temporal extent
Date and time 2010-03-01

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -124.456208
* East longitude -113.671163
* North latitude 42.064528
* South latitude 32.443111
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -369856.072800
* East longitude 525674.540800
* South latitude -603210.343600
* North latitude 449582.070300
* Extent contains the resource Yes

Resource Maintenance

Resource maintenance
Update frequency not planned


Resource Constraints

Constraints
Limitations of use

The user accepts sole responsibility for the correct interpretation of this report and the correct use of its accompanying data sets in environmental documents. The Essential Habitat Connectivity map delineates lands likely important to wildlife movement between large, mostly natural areas at the statewide scale based on available data and assumptions provided in this report. It omits small natural areas and does not reflect movement needs of particular species. It is a decision-support tool to be refined by finer-scale analyses and local linkage designs. DO NOT assume that lands outside Natural Landscape Blocks or Essential Connectivity Areas are unimportant to wildlife populations or movements.


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 8.8(9.3.1.2)


Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS1073_20180123
* Object type composite
* Object count 0



ArcGIS Feature Class Properties
Feature class name DS1073_20180123
* Feature type Simple
* Geometry type Polygon
* Has topology FALSE
* Feature count 0
* Spatial index TRUE
* Linear referencing FALSE



Data Quality

Lineage

Process step
When the process occurred 2010-03-17
Description
Edited original metadata by adding ISO keywords.


Process contact
Individual's name Greg Ewing
Organization's name California Department of Fish and Game
Contact's role processor


Contact information




Geoprocessing history

Process
Date 2018-01-2311:42:24
Tool location c:\program files (x86)\arcgis\desktop10.5\ArcToolbox\Toolboxes\Data Management Tools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Process
Date 2018-01-2311:48:19
Tool location c:\program files (x86)\arcgis\desktop10.5\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Distribution

Distribution format
* Name SDE Feature Class


Transfer options
* Transfer size 29.190


Online source
Location https://www.wildlife.ca.gov/Data/BIOS
Function performed information

Online source
Location ftp://ftp.wildlife.ca.gov/BDB/GIS/BIOS/Habitat_Connectivity/
Function performed download

Online source
Location ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/1000_1099/ds1073.zip
Function performed download

Fields

Details for object DS1073_20180123
Type Feature Class
Row count 93000
Definition
Interstate Connections - California Essential Habitat Connectivity (CEHC) [ds619]


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 area_ac
Alias area_ac
Data type Double
Width 8
Precision 0
Scale 0
Field description
Area of feature in acers.


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




Field Shape_Leng
* Alias Shape_Leng
* Data type Double
* Width 8
* Precision 38
* Scale 8




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






Overview Description
Entity and Attribute Overview
There are 175 modeled sticks and 168 unsplit ECAs. Due to the close proximity of some Natural Landscape Blocks, overlap of analysis extents that shared one Natural Landscape Block, and the variable sizes of the analysis extents, there were some Essential Connectivity Areas that were completely subsumed by others. In these few cases, the smaller Essential Connectivity Area that was completely included within a larger one was removed from the final output.




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 2018-01-23


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 2018-01-2311:42:23
Last modified in ArcGIS for the item 2018-01-2311:42:37


Automatic updates
Have been performed Yes
Last update 2018-01-2311:42:37

Item location history
Item copied or moved 2018-01-2311:33:45
From P:\WorkArea\ds1000-1099\1073-Natual_Areas_Small_Essential_Hab_Connectivity\v2\v2_work\ds1073
To \\geodata.\\ds1000-1099\1073-Natual_Areas_Small_Essential_Hab_Connectivity\v2\v2_final\ds1073


Metadata Contacts

Metadata contact
Individual's name Monica Parisi
Organization's name Habitat Conservation Planning Branch, California Department of Fish and Wildlife
Contact's position Senior Environmental Scientist
Contact's role point of contact


Contact information
Phone
Voice (916) 653-9767

Address
e-mail address Monica.Parisi@wildlife.ca.gov



Metadata Maintenance

Maintenance
Update frequency not planned


Thumbnail and Enclosures