Mohave Ground Squirrel Potential Corridors [ds557]

SDE Feature Class

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Tags
boundaries, environment, Mojave Desert, core areas, corridors, Spermophilus mohavensis, Mohave ground squirrel, biota, California, known populations


Summary

To display potential habitat corridors between the Mohave ground squirrel core areas and known populations.

Description

The Mohave ground squirrel (Spermophilus mohavensis) is found only in the western Mojave Desert of California. Although it is listed as Threatened by the State of California, there is little published information regarding its current distribution and status. This dataset shows the potential habitat corridors that may provide connectivity between identified core areas and other known Mohave ground squirrel populations. It will be an important conservation goal to ensure sufficient connectivity between these areas to allow gene flow.

Credits

Use limitations

This information represents one person's best assessment as of 2008 and will undoubtedly change as we learn more. This is not CDFG official data, but was supplied by a private individual, who's ultimately responsible for the accuracy.

Extent

West -117.963275 East -116.999537
North 36.049985 South 34.902254

Scale Range

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource biota, environment, boundaries


* Content type Downloadable Data


Place keywords Mojave Desert, California

Theme keywords core areas, corridors, Spermophilus mohavensis, Mohave ground squirrel, known populations

Theme keywords boundaries, environment, biota

Thesaurus
Title ISO 19115 Topic Category


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Citation

* Title DS0557_20090831
Publication date 2008-01-01


Presentation formats * digital map


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Citation Contacts

Responsible party
Organization's name Philip Leitner
Contact's role originator


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Resource Details

Dataset languages English(UNITED STATES)


Status under development
Spatial representation type * vector


Supplemental information
*The paper supporting this dataset can be accessed at: http://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=15148 The potential corridor between the Coso/Olancha core area and Little Dixie Wash follows a narrow strip of public land between the Sierra escarpment and the boundary of China Lake NAWS. It is not clear that this corridor is effective because of its minimal width (1-4 km) and because there is no firm evidence that it is currently occupied. There may well be an alternative corridor through China Lake NAWS, but the U.S. Navy cannot guarantee permanent protection and, again, there is no proof that continuous Mohave ground squirrel populations exist here. Connectivity between the Little Dixie Wash core area and Edwards Air Force Base is most likely to be achieved by protection of a north-south habitat corridor along US Highway 395. This linkage appears to provide the highest quality habitat connection between these 2 core areas. It would also help to provide connectivity among other known populations in the Ridgecrest area, the DTNA, Pilot Knob, and the Boron region. There are no recent Mohave ground squirrel records along much of this corridor, so it is not clear that it is currently occupied. The most effective corridor linking the Coolgardie Mesa/Superior Valley core area with other populations is probably thorough the Pilot Knob region. This connection is relatively short and crosses apparently good quality habitat. Although the most direct route is across a corner of the China Lake NAWS, public lands just to the south could also provide connectivity. An alternative linkage would be to the southwest toward Edwards Air Force Base across the broad valley centered on Harper Dry Lake. However, this route is lower in elevation, receives less rainfall, and habitat here is of lesser quality. The lack of data concerning the existence or status of Mohave ground squirrel populations in these potential corridors is a serious problem. While these routes may seem geographically appropriate in providing linkages between populations, it will be important to conduct field studies to determine whether or not they are actually occupied.
* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143


ArcGIS item properties
* Name DS0557_20090831
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

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Extents

Extent
Description
publication date
Temporal extent
Date and time 2008-01-01

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -117.963275
* East longitude -116.999537
* North latitude 36.049985
* South latitude 34.902254
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -13131611.755700
* East longitude -13024328.920000
* South latitude 4150605.779000
* North latitude 4307501.351800
* Extent contains the resource Yes

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Resource Points of Contact

Point of contact
Individual's name Philip Leitner
Organization's name California State University - Stanislaus
Contact's role point of contact


Contact information


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Resource Maintenance

Resource maintenance
Update frequency unknown


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Resource Constraints

Legal constraints
Other constraints
This data may not be distributed. Data requests may be sent to Kristina White at kwhite@dfg.ca.gov.
Constraints
Limitations of use
This information represents one person's best assessment as of 2008 and will undoubtedly change as we learn more. This is not CDFG official data, but was supplied by a private individual, who's ultimately responsible for the accuracy.
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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


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Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS0557_20090831
* Object type composite
* Object count 12

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ArcGIS Feature Class Properties
Feature class name DS0557_20090831
* Feature type Simple
* Geometry type Polyline
* Has topology FALSE
* Feature count 12
* Spatial index TRUE
* Linear referencing FALSE

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Data Quality

Lineage

Process step
When the process occurred 2008-08-27
Description
Dataset reprojected to Albers NAD83. Created metadata from the "Current Status of the Mohave Ground Squirrel" document.


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


Contact information


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Geoprocessing history

Process
Date 2009-08-2809:23:15
Tool location C:\Documents and Settings\kwhite\Application Data\ESRI\ArcToolbox\My Toolboxes\1MyTools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Process
Date 2009-08-3114:31:39
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-07-2109:10:52
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2013-06-2115:40:18
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


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Distribution

Distribution format
* Name SDE Feature Class


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

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Fields

Details for object DS0557_20090831
* Type Feature Class
* Row count 12


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.


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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.


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Field Id
* Alias Id
* Data type Integer
* Width 4
* Precision 10
* Scale 0


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


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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 2014-03-0616:43:56
Last modified in ArcGIS for the item 2014-04-2813:12:21


Automatic updates
Have been performed Yes
Last update 2014-04-2813:12:21


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Metadata Contacts

Metadata contact
Individual's name Kristina White
Organization's name California Department of Fish and Game
Contact's role point of contact


Contact information


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Thumbnail and Enclosures

Thumbnail

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

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