20230428 09401300 1.0 FGDC CSDGM Metadata FALSE ClarkCountyStudy 002 598648.750446 765648.750446 3876443.900693 4081443.900693 1 0.008 Projected GCS_North_American_1983 Linear Unit: Meter (1.000000) NAD_1983_UTM_Zone_11N <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.7'><WKT>PROJCS[&quot;NAD_1983_UTM_Zone_11N&quot;,GEOGCS[&quot;GCS_North_American_1983&quot;,DATUM[&quot;D_North_American_1983&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Transverse_Mercator&quot;],PARAMETER[&quot;False_Easting&quot;,500000.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-117.0],PARAMETER[&quot;Scale_Factor&quot;,0.9996],PARAMETER[&quot;Latitude_Of_Origin&quot;,0.0],UNIT[&quot;Meter&quot;,1.0],AUTHORITY[&quot;EPSG&quot;,26911]]</WKT><XOrigin>-5120900</XOrigin><YOrigin>-9998100</YOrigin><XYScale>450445547.3910538</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>26911</WKID><LatestWKID>26911</LatestWKID></ProjectedCoordinateSystem> 20230428 11061800 20230428 11061800 20000000 625000 FGDC Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595 Clark County Study Area in Nussear et al. Is the Desert Tortoise an umbrella species for other terrestrial species in the Mojave Desert? 2023-04-28T00:00:00 2023-04-28T00:00:00 2023-04-28T00:00:00 Kenneth Nussear University of Nevada Reno, Department of Geography Professor 1664 N. Virginia Street, Mailstop 154 Reno NV 89557 knussear@unr.edu US 775-784-6995 8 am to 5 pm Pacific time Contact by e-mail. 1 -115.918619 -114.020929 36.873794 34.995754 desert tortoiseGopherus agassiziiMojave DesertMojavethreatened speciesumbrella speciesconservationhabitathabitat suitability modelclimate changegeneticsconnectivityDepartment of DefenseNational Park ServiceBureau of Land Management <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>In 1990 the Mojave desert tortoise (Gopherus agassizii) was listed as a threatened species under the US Endangered Species Act (USFWS 1994), and is protected in every state where it occurs. Umbrella species are defined as a species “whose conservation is expected to confer protection to a large number of naturally co-occurring species”. Some of the characteristics that would constitute a “good” umbrella species are that they are not too rare, not too common, and are somewhat sensitive to disturbances such that they are offered conservation management for protection. Although the desert tortoise has often been described as an umbrella species, quantitative studies are lacking that identify which species might potentially benefit from habitat protection measures for the desert tortoise. While many assessments of umbrella species include analyses of overlapping habitat or habitat proxies (e.g. using overlays of binary habitat maps in a GIS), we sought to not only assess overlap, but also the relative suitability of a species’ habitat where it overlapped with desert tortoise habitat. Here we ask the questions: 1) Are the overlapping habitat areas that fall within higher suitability scores for the desert tortoise also high for the species under consideration; 2) To what extent do areas of greater habitat quality occur relative to the total distribution of the protected species within the study area; 3) How might these assessments differ by agency/installation?</SPAN></P></DIV></DIV></DIV> Nussear, K., Dilts, T., Dutcher, K., Esque, T., Parandhaman, A., Byer, N., Vandergast, A., Shryock, D., Bassett, S., Boyle, D., Matocq, M., Heaton, J. Is the Desert Tortoise an umbrella species for other terrestrial species in the Mojave Desert? For submission to Diversity and Distributions Clark County study area used to create Figure 1 in Nussear, K., Dilts, T., Dutcher, K., Esque, T., Parandhaman, A., Byer, N., Vandergast, A., Shryock, D., Bassett, S., Boyle, D., Matocq, M., Heaton, J. Is the Desert Tortoise an umbrella species for other terrestrial species in the Mojave Desert? For submission to Diversity and Distributions. <DIV STYLE="text-align:Left;"><DIV><P><SPAN>Please cite Nussear, K., Dilts, T., Dutcher, K., Esque, T., Parandhaman, A., Byer, N., Vandergast, A., Shryock, D., Bassett, S., Boyle, D., Matocq, M., Heaton, J. Is the Desert Tortoise an umbrella species for other terrestrial species in the Mojave Desert? For submission to Diversity and Distributions</SPAN></P></DIV></DIV> Shapefile 0.008 dataset EPSG 6.13(3.0.1) 1 Simple FALSE 1 TRUE FALSE ClarkCountyStudy Feature Class 1 FID FID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. OBJECTID OBJECTID Integer 10 10 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Shape Geometry 0 0 0 Feature geometry. Esri Coordinates defining the features. FID_Raster FID_Raster Integer 10 10 0 Id Id Integer 10 10 0 gridcode gridcode Integer 10 10 0 Shape_Leng Shape_Leng Double 19 0 0 Shape_Area Shape_Area Double 19 0 0 Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. 20230428 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