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Title: Ecology of greater sage-grouse in the Dakotas

Author: Swanson, Christopher C.;

Date: 2009

Source: Brookings: South Dakota State University. 168 p. Dissertation.

Publication Series: Miscellaneous Publication

Description: Greater sage-grouse (Centrocercus urophasianus) populations and the sagebrush (Artemisia spp.) communities that they rely on have dramatically declined from historic levels. Moreover, information regarding sage-grouse annual life-history requirements at the eastern-most extension of sagebrush steppe communities is lacking. Understanding the ecology of sage-grouse in this region is essential for developing management strategies and to ensure future viability of populations in the Dakotas. This dissertation addresses factors that influence sage-grouse survival, winter habitat use, seasonal movements, and brood breakup based on research conducted from 2005-2007 in southwest North Dakota and from 2006-2008 in northwest South Dakota. Identifying critical periods of survival in sage-grouse during their annual life-cycle is important to support biologically based management actions. I evaluated factors influencing survival of 219 breeding-age (≥ 1 year of age) and juvenile (≥ 10 weeks of age) radio-marked sage-grouse using known-fate models in program MARK.

Keywords: greater sage-grouse, Centrocercus urophasianus, sagebrush, Artemisia spp.

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Swanson, Christopher C. 2009. Ecology of greater sage-grouse in the Dakotas. Brookings: South Dakota State University. 168 p. Dissertation.


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