Essential Connectivity Areas - CEHC [ds623]

SDE Feature Class

Open this dataset in BIOS

Tags
Connectivity Conservation, Essential, Corridor, environment, Habitat, California, Least-cost Corridor, Linkage, Connectivity, Natural Landscape Blocks, Essential Connectivity Areas, Linkage Design, biota


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 -124.240768 East -114.513162
North 42.008319 South 32.596743

Scale Range

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource biota, environment


* Content type Downloadable Data


Place keywords California

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

Theme keywords environment, biota

Thesaurus
Title ISO 19115 Topic Category




Citation

* Title DS0623_20100412
Publication date 2010-03-01


Presentation formats * digital map


Citation Contacts

Responsible party
Organization's name Spencer, W.D., P. Beier, K. Penrod, K. Winters, C. Paulman, H. Rustigian-Romsos, J. Strittholt, M. Parisi, and A. Pettler. 2010. California Essential Habitat Connectivity Project: A Strategy for Conserving a Connected California. Prepared for California Department of Transportation, California Department of Fish and Game, and Federal Highways Administration.
Contact's role originator


Resource Details

Dataset languages English(UNITED STATES)


Status completed
Spatial representation type * vector


Supplemental information
This dataset is a deriviative product for display purposes only and thus will not be distributed. See ds620 to obtain the downloadable version. 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 10.1.1.3143


ArcGIS item properties
* Name DS0623_20100412
* 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 -124.240768
* East longitude -114.513162
* North latitude 42.008319
* South latitude 32.596743
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -13830419.071600
* East longitude -12747546.909500
* South latitude 3841899.854000
* North latitude 5162225.642200
* Extent contains the resource Yes

Resource Points of Contact

Point of contact
Individual's name Candace Paulman
Organization's name Science & Collaboration for Connected Wildlands
Contact's role point of contact


Contact information


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 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 7.11.2


Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS0623_20100412
* Object type composite
* Object count 136041



ArcGIS Feature Class Properties
Feature class name DS0623_20100412
* Feature type Simple
* Geometry type Polygon
* Has topology FALSE
* Feature count 136041
* 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 2010-04-1216:47:43
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-07-2109:28:36
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2013-06-2116:01:31
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

Distributor


Distribution format
* Name SDE Feature Class


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

Online source
Location ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Habitat_Connectivity/

Fields

Details for object DS0623_20100412
* Type Feature Class
* Row count 136041
Definition
Essential Connectivity Areas - California Essential Habitat Connectivity (CEHC) [ds623]


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 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 Permeability
* Alias Permeability
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0




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
The minimum cell value was used for overlapping cells.




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 2014-04-28


ArcGIS metadata properties
Metadata format ArcGIS1.0
Metadata style FGDC CSDGM Metadata


Created in ArcGIS for the item 2014-03-0617:14:41
Last modified in ArcGIS for the item 2014-04-2813:33:12


Automatic updates
Have been performed Yes
Last update 2014-04-2813:33:12


Metadata Contacts

Metadata contact
Individual's name Candace Paulman
Organization's name Science & Collaboration for Connected Wildlands
Contact's role point of contact


Contact information


Thumbnail and Enclosures

Thumbnail

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