Chapter

Characteristics and Dynamics of Greater Sage-Grouse Populations

John W. Connelly, Christian A. Hagen and Michael A. Schroeder

in Greater Sage-Grouse

Published by University of California Press

Published in print May 2011 | ISBN: 9780520267114
Published online March 2012 | e-ISBN: 9780520948686 | DOI: http://dx.doi.org/10.1525/california/9780520267114.003.0004
Characteristics and Dynamics of Greater Sage-Grouse Populations

Show Summary Details

Preview

Early investigations supported the view that Greater Sage-Grouse (Centrocercus urophasianus) population dynamics were typical of other upland game birds. More recently, greater insights into the demographics of Greater Sage-Grouse revealed this species was relatively unique because populations tended to have low winter mortality, and relatively high annual survival. This chapter describes the population characteristics of Greater Sage-Grouse and summarizes traits that make it one of North America's most unique bird species. It analyzes data on movements, lek attendance, and nests as well as female demographics during the breeding season for the eastern and western portions of the species' range. Lengthy migrations between distinct seasonal ranges are one of the more distinctive characteristics of Greater Sage-Grouse. These migratory movements and large annual home ranges help integrate Greater Sage-Grouse populations across vast landscapes of sagebrush (Artemisia spp.)-dominated habitats. The sex ratio of adult Greater Sage-Grouse favors females but reported rates vary considerably. Long-term age ratios (productivity) in the fall have varied from 1.4 to 3.0 juveniles/adult female.

Keywords: Artemisia; Centrocercus urophasianus; population dynamics; demographics; Greater Sage-Grouse; breeding; reproduction; sagebrush; survival; migrations

Chapter.  8910 words.  Illustrated.

Subjects: Vertebrates

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.