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The Gunnison's prairie dog structures a high desert grassland landscape as a keystone engineer

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Constantine N Slobodchikoff, and Randy K Bangert, The Gunnison's prairie dog structures a high desert grassland landscape as a keystone engineer: .

Summary

The influence of landscape spatial structure on ecological processes has recently received much attention. Comparisons are made here between the spatial structure of grasslands, and active and extirpated Gunnison's prairie dog (Cynomys gunnisoni Hollister) towns at the Petrified Forest National Park, Arizona, U.S.A. The spatial structure of bare ground was quatified using a box-counting technique to extract landscape fractal dimensions, D, and bare-ground patch size. These landscapes are fractal, and active prairie dog towns had higher fractal dimensions, i.e. a more homogeneous spatial structure as D approaches 2, than inactive towns, which had higher fractal dimensions than unmodified grasslands. Morisita's index suggested that shrubs [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS export <br> On - Tue May 10 11:55:51 CDT 2011

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Title Citation The Gunnison's prairie dog structures a high desert grassland landscape as a keystone engineer

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