Filters: Tags: nesting habitat (X)
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We analyzed variation in canopy closure around 47 Mexican spotted owl (Strix occidentalis lucida) nest sires and 47 random forest sites on the Coconino National Forest in northcentral Arizona. We mapped distinct habitat polygons on 1:15,840 color aerial photographs, assigned each polygon to one of 4 canopy-closure classes (70%), and measured the area in each canopy class within 5 concentric analysis zones with radii of 0.1, 0.4, 0.8, 1.2, and 1.6 km (delineating rings of about 4, 47, 150, 252, and 352 ha). Landscape composition differed between spotted owl nest and random sites (P 70% canopy-closure class and less area in the 70% canopy predominated Nesting spotted owls selected areas with denser canopy than randomly...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Arizona,
Journal of Wildlife Management,
Mexican spotted owl,
Strix occidentalis lucida,
aerial photography,
This is a continuous raster dataset identifying areas that are priority for grassland establishment to increase the quantity and/or quality of mottled duck nesting habitat in the Western Gulf Coast. The identification process is based on key biological parameters such as patch size, land use type, distance to brood rearing habitat, etc. Additionally, this raster datasets presents the data in a form that prioritizes habitat from more suitable to less suitable based on landscape metrics. The scale ranges from 1 to 0, higher value designating higher priority for grassland establishment.
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: MODU,
Mottled Duck,
dst,
establishment,
grassland,
The barrier islands and coastal beaches along the Atlantic Coast are dynamic systems continuously affected and shaped by tides and weather events (Davidson-Arnott 2010). Occasionally weather events are large enough to generate or expand beach overwash areas and may inundate all or part of the islands. Nor'easters, are known to play a significant role in shaping beach morphology along the Mid-Atlantic and New England coasts (Leatherman et al. 1977, Hapke et al. 2010), but hurricanes are also recognized drivers of change in this region (Donnelly et al. 2001, Donnelly et al. 2004, Buynevich and Donnelly 2006, Boldt et al. 2010). The federally threatened Atlantic Coast piping plover (Charadrius melodus melodus) is dependent...
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