Connectivity Gradient, San Joaquin Valley, 2011 [ds727]

SDE Raster Dataset

Open this dataset in BIOS

Tags
San Joaquin Valley, environment, California


Summary

This analysis of the San Joaquin Valley region was conducted as part of a case study to illustrate one approach for determining and utilizing wildlife movement data for the purposes of regional conservation planning, particularly in agricultural or other mixed use landscapes, where wildlife may move more easily than in urban settings with a core and linkage design for reserve lands.

Description

This data layer represents a gradient of connectivity for the San Joaquin Valley -- connectivity meaning an animal's ability to move across the landscape -- prepared in 2011 by the UC Davis Road Ecology Center and UC Davis Information Center for the Environment. The highest value cells in this raster data set are those most natural and least disturbed, with highest permeability for wildlife. The generation of this data layer comes from five main base layers and a landscape gradient analysis model output. The base layers include 1) a road density layer generated from Caltrans (2007) and TigerLines (2001), 2) the USGS National Landcover Dataset (NLCD), 3) the California Department of Water Resources (DWR) Landcover dataset, 4) the US Forest Service Classification and Assessment with Landsat of Visible Ecological Groupings (CALVEG), and 5) California Parcel Data provided by the state. To create the road density layer, the two input data sources were merged and then built using the ArcGIS function Line Density. The Line Density function was applied with a 100 meter output cell size and 1000 meter search radius. The NLCD and DWR land use data sets provided land use classifications that were reclassified with wildlife movement or naturalness ratings. The CALVEG data provided California Wildlife Habitat Relationships System (WHR) habitat types, used here to reclassify the landscape in terms of wildlife movement. California Parcel Data was used to identify land with various structures and was, again, reclassified for wildlife movement. Details on the transformation and reclassification of attribute data from these input sources and on the landscape gradient analysis performed may be found in Appendices A-D of the technical report from this project: Regional Approach for Connectivity Analysis and Design (Shilling F. and D. Waetjen, 2011) ( http://www.nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=43234) .

Credits

UC Davis Road Ecology Center ( http://roadecology.ucdavis.edu) UC Davis Information Center for the Environment ( http://ice.ucdavis.edu)

Use limitations

Please contact Fraser Shilling at the Road Ecology Center for information on using the connectivity model in your study.

Extent

West -122.174846 East -116.931380
North 38.754134 South 34.306368

Scale Range

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource environment


* Content type Downloadable Data


Place keywords San Joaquin Valley, California

Theme keywords environment

Thesaurus
Title ISO 19115 Topic Category




Citation

* Title DS0727_20130103


Presentation formats digital map
FGDC geospatial presentation format raster digital data


Resource Details

Dataset languages English(UNITED STATES)


Spatial representation type * grid


* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143


Credits
UC Davis Road Ecology Center ( http://roadecology.ucdavis.edu) UC Davis Information Center for the Environment ( http://ice.ucdavis.edu)
ArcGIS item properties
* Name DS0727_20130103
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -122.174846
* East longitude -116.931380
* North latitude 38.754134
* South latitude 34.306368
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -13600441.692928
* East longitude -13016741.692928
* South latitude 4070014.332192
* North latitude 4686514.332192
* Extent contains the resource Yes

Resource Points of Contact

Point of contact
Individual's name Fraser Shilling
Organization's name Road Ecology Center
Contact's position Project Lead, Ecologist
Contact's role point of contact


Contact information
Address
Type both
Delivery point One Shields Ave
Delivery point Department of Environmental Science and Policy
City Davis
Administrative area CA
Postal code 95616
Country US
e-mail address fmshilling@ucdavis.edu



Resource Maintenance

Resource maintenance
Update frequency not planned


Resource Constraints

Constraints
Limitations of use
Please contact Fraser Shilling at the Road Ecology Center for information on using the connectivity model in your study.

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 148923141.92838538
Z origin -100000
Z scale 10000
M origin -100000
M scale 10000
XY tolerance 0.001
Z tolerance 0.00020000000000000001
M tolerance 0.00020000000000000001
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


Geoprocessing history

Process
Date 2013-01-0313:21:11
Tool location C:\Program Files (x86)\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyRaster
Command issued
Include in lineage when exporting metadata No


Process
Date 2013-06-2409:17:13
Tool location c:\program files (x86)\arcgis\desktop10.1\ArcToolbox\Toolboxes\Data Management Tools.tbx\ProjectRaster
Command issued
Include in lineage when exporting metadata No


Distribution

Distribution format
* Name SDE Raster Dataset


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

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


Created in ArcGIS for the item 2013-01-0313:14:10
Last modified in ArcGIS for the item 2014-04-2815:45:29


Automatic updates
Have been performed Yes
Last update 2014-04-2815:45:29


Metadata Contacts

Metadata contact
Individual's name Fraser Shilling
Organization's name Road Ecology Center
Contact's position Project Lead, Ecologist
Contact's role point of contact


Contact information
Address
Type both
Delivery point Department of Environmental Science and Policy
Delivery point One Shields Avenue
City Davis
Administrative area CA
Postal code 95616
Country US
e-mail address fmshilling@ucdavis.edu



Thumbnail and Enclosures

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