Metadata for Landscape Conservation Sites

Sonoran Desert Ecoregion

Citation Information

Originator: Conservation Sciences Division, The Nature Conservancy of Arizona

Publication Date: 200008

Title: Conserv_p.shp

Publication Place: Tucson, Arizona

Description: This polygon shapefile represents Sonoran Desert conservation sites. Attributes give the conservation site number, site name, designation, and area.

Spatial Reference Information

Grid Coordinate System Name: Universal Transverse Mercator

UTM Zone Number: 12

Planar Distance Units: meters

Horizontal Datum Name: North American Datum of 1927

Ellipsoid Name: Clarke 1866

Distribution Information

Contact Organization: Conservation Sciences Division, The Nature Conservancy of Arizona

Contact Address: 1510 E. Ft. Lowell Rd., Tucson, Arizona 85719

Contact Voice Telephone: (520) 622-3861

Click here for Attribute Information

Data Quality Information

Lineage / Source Information

Title	Originator	Scale Denominator	Time Period of Content
Xprtmerg.shp	IMADES Hermosillo, Sonora, Mexico	NA	1998
Conservation Targets	Arizona Game & Fish Dept. Heritage Data Mgmt. System Phoenix, Arizona	NA	1999
Hydro.shp	The Nature Conservancy of Arizona Tucson, Arizona	1,000,000	Unknown
Veg.shp	The Nature Conservancy Rocky Mountain Division Western Resource Office Boulder, Colorado	500,000	1980
Dems	IMADES Hermosillo, Sonora, Mexico	250,000	1978-1980
Landusmx.shp	The Nature Conservancy of Arizona Tucson, Arizona	100,000	1988-2000
Mss92.img	IMADES Hermosillo, Sonora, Mexico	NA	1992
Biophys	The Nature Conservancy of Arizona Tucson, Arizona	250,000	1998

Process Step

Process Description

Process Date

Conservation sites were digitized manually in ArcView based on several sources of information. Sites were first delineated from the convergence of overlapping polygons of the expert-nominated areas (see Xprtmerg.shp). Boundaries were refined by considering the (1) records for Conservation Targets from the Natural Heritage Program databases; (2) target occurrence data provided by experts (May 1998 Experts Workshop) and from primary and grey literature not currently in a digital database (e.g., wilderness study area reports); (3) spatial data sets for the Ecoregion's topography, hydrography, land use/land cover, GAP vegetation (and equivalent data for Mexico), land management status, and Thematic Mapper satellite imagery; and (4) indices of biophysical variation from biophysical modeling exercise.

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