Sage grouse declines in western North America: what are the problems?

Publication Type:

Conference Paper

Authors:

Braun, Clait E.

Source:

Proceedings of the Western Association of Fish and Wildlife Agencies, Western Association of Fish and Wildlife Agencies, Volume 78, 1998 June 26-July 2; Jackson, WY, p.139-156 (1998)

Call Number:

A98BRA03IDUS

URL:

https://www.researchgate.net/profile/Clait_Braun/publication/247440432_Sage-grouse_declines_in_western_North_America_what_are_the_problems/links/54b7eb150cf28faced60cd4a.pdf?inViewer=0&pdfJsDownload=0&origin=publication_detail

Keywords:

Centrocercus urophasianus, Greater Sage-Grouse, SWAP

Abstract:

Sage grouse (Centrocercus urophasianus) populations have declined throughout western North America. This species has been extirpated in 5 states and 1 province, all at the periphery of the original distribution. Breeding population size in each of 3 additional states and 2 provinces is estimated at less than 2,000 individuals. Declines in population size in Colorado have varied from 45 to 82% since 1980, depending upon area and the rangewide estimate is at least 30% decrease since 1985. Major factors involved in the documented decreases in distribution and abundance are habitat loss (usually permanent), habitat fragmentation (usually permanent), and habitat degradation (usually short term, 2 to 30 years). No single factor is responsible for the observed declines, and human-induced habitat changes are accentuated by periodic drought. No natural undisturbed habitats are known to exist, and active management of sagebrush (Artemisia spp.) rangelands is needed on a management experiment basis.

Notes:

ELECTRONIC FILE - Zoology

SWAP (2/19/2016) citation [but probably should change to example immediately below this one]:
Braun CE. 1998. Sage grouse declines in western North America: What are the problems? [publisher unknown]. (Proceedings of the Western Association of State Fish and Wildlife Agencies 78). p. 139–156. [accessed 2015 Dec 21].
https://www.researchgate.net/profile/Clait_Braun/publication/247440432_S....

ResearchGate treats this more like an article in a periodical:
Braun CE. 1998. Sage grouse declines in western North America: what are the problems? Proceedings of the Western Association of State Fish and Wildlife Agencies 78. [accessed 2015 Dec 21]. p. 139-156. https://www.researchgate.net/profile/Clait_Braun/publication/247440432_S...