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BUOW_Imperial_Valley_Soils_Categorized (Map Service)


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Current Version: 10.81

Service Description: Soils categorized according to Burrowing Owl suitability in Imperial Valley, California. Imperial Irrigation District provided the geospatial dataset to Audubon California. The methodology is described in the report below.

"Burrowing Owl Population Size in the Imperial Valley, California: Surveys and Sampling Methodologies for Estimation" by Jeffrey Manning, dated April 15, 2009 (available at http://www.iid.com/Modules/ShowDocument.aspx?documentid=8172).

The methodology is described thus:

"Soft, friable, loamy soils have been hypothesized to be an important correlate of Burrowing Owl nest burrows (MacCracken et al. 1985, Green 1983). Thus, soils that deviate from this soil type are anticipated to coincide with fewer numbers of owls.

Soil information was obtained from the USDA Natural Resource Conservation Service (NRCS) geodatabase of soils (NRCS 2005). These data were derived from a digital soil survey developed by the National Cooperative Soil Survey, and was the most detailed level of soil geographic data available. It was prepared by digitizing maps, compiling information onto a planimetric-correct base and digitizing from it, and/or revising digitized maps using remotely sensed information (NRCS 2005). National Cooperative Soil Survey standards and procedures were used in the classification of soils, design and name of map units, and location of special soil features in this dataset (NRCS 1993, NRCS 1995, NRCS and NSS undated current issue)."



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Layers: Tables: Description: Soils categorized according to Burrowing Owl suitability in Imperial Valley, California. Imperial Irrigation District provided the geospatial dataset to Audubon California. The methodology is described in the report below.

"Burrowing Owl Population Size in the Imperial Valley, California: Surveys and Sampling Methodologies for Estimation" by Jeffrey Manning, dated April 15, 2009 (available at http://www.iid.com/Modules/ShowDocument.aspx?documentid=8172).

The methodology is described thus:

"Soft, friable, loamy soils have been hypothesized to be an important correlate of Burrowing Owl nest burrows (MacCracken et al. 1985, Green 1983). Thus, soils that deviate from this soil type are anticipated to coincide with fewer numbers of owls.

Soil information was obtained from the USDA Natural Resource Conservation Service (NRCS) geodatabase of soils (NRCS 2005). These data were derived from a digital soil survey developed by the National Cooperative Soil Survey, and was the most detailed level of soil geographic data available. It was prepared by digitizing maps, compiling information onto a planimetric-correct base and digitizing from it, and/or revising digitized maps using remotely sensed information (NRCS 2005). National Cooperative Soil Survey standards and procedures were used in the classification of soils, design and name of map units, and location of special soil features in this dataset (NRCS 1993, NRCS 1995, NRCS and NSS undated current issue)."



Copyright Text: Imperial Irrigation District, Bloom Biological

Spatial Reference:
102100

Single Fused Map Cache: true

Capabilities: Map,TilesOnly

Tile Info:
Initial Extent:
Full Extent:
Min Scale: 1155581.108577
Max Scale: 4513.988705

Min LOD: 9
Max LOD: 17

Units: esriMeters

Supported Image Format Types: PNG

Export Tiles Allowed: false
Max Export Tiles Count: 100000

Document Info: