USFWS Utah Mexican Spotted Owl Willey 1997 Habitat Model
收藏US Fish and Wildlife Service Open Data2026-03-28 收录
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https://gis-fws.opendata.arcgis.com/datasets/fws::usfws-utah-mexican-spotted-owl-willey-1997-habitat-model
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<span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>The Willey and Spotskey (1997) model was developed to help biologists identify potential Mexican spotted owl habitat in Utah. </span><font size='3'>This data </font><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>is intended to aid in the analysis of effects to Mexican spotted owl from proposed project-related disturbance and should be used in consultation with the USFWS </span><a href='https://www.fws.gov/office/utah-ecological-services' target='_blank' rel='nofollow ugc noopener noreferrer'>Utah Ecological Services Field Office</a><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'> (</span>URL<span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>). Based on the habitat requirements stated in the 2012 </span><a href='https://ecos.fws.gov/ecp/species/8196' target='_blank' rel='nofollow ugc noopener noreferrer'>Recovery Plan</a><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'> (</span>URL<font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>), this model uses slope, aspect, curvature, and vegetation to identify potential habitat. It relies on a slope curvature index that is valuable for predicting surface ruggedness. </span></font><div><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'><br /></span></font></div><div><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>The 1997 model likely overestimates the extent of owl habitat throughout the state and includes foraging, wintering, and dispersal habitat. For project-planning, we recommend</span><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'> its use in concert with an analysis of aerial imagery to eliminate non-canyon habitat, such as mountain ridges or straight cliff edges. Additionally, field assessments should be conducted to identify suitable habitat that requires occupancy surveys.</span><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'> </span></font><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'> </span></div>
提供机构：
US Fish and Wildlife Service, Utah Ecological Services Field Office
