Greater Sage-Grouse movements and habitat use during winter in central Oregon Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/rr171x798

This is the publisher’s final pdf. The published article is copyrighted by Brigham Young University and can be found at:  https://ojs.lib.byu.edu/ojs/index.php/wnan.

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  • Greater Sage-Grouse (Centrocercus urophasianus) depend on sagebrush habitat for food and cover during winter, yet few sage-grouse winter ecology studies have been conducted. During January and February 2007, we monitored 22 radio-collared sage-grouse (7 females and 15 males) in central Oregon to characterize winter habitat use and movement patterns. We estimated distances traveled between locations on a weekly basis and quantified habitat characteristics at locations used by male and female sage-grouse. The birds we collared moved extensively across the landscape, using approximately 1480 km². Sagebrush canopy height in sites used by sage-grouse varied from 0.25 to 0.75 m, with females tending to be found in sites with taller sagebrush and less foliar cover than in sites where we found males. The difference in foliar cover between sexes was related to a seasonal change in habitat use: 4 females found in little sagebrush (Artemisia arbuscula) in January and early February were no longer located nor found foraging in little sagebrush after 15 February. Also, by this date, most male sage-grouse had stopped using big sagebrush (Artemisia tridentata) as they migrated to leks. Sage-grouse mortality rates were low during our study, which may be attributed to the study area receiving half the long-term average amount of snow. The large area over which sage-grouse moved during winter indicates that conservation of Greater Sage-Grouse may require preservation of sagebrush at landscape scales (thousands of square kilometers).
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  • Bruce, J., Robinson, W., Petersen, S., & Miller, R. (2011). Greater sage-grouse movements and habitat use during winter in central oregon. Western North American Naturalist, 71(3), 418-424.
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  • description.provenance : Approved for entry into archive by Deanne Bruner(deanne.bruner@oregonstate.edu) on 2013-04-08T21:11:01Z (GMT) No. of bitstreams: 1 RobinsonWDouglasFisheriesWildlifeGreaterSageGrouse.pdf: 318305 bytes, checksum: 22022b8fbf49b921a2bff8dfbce8c667 (MD5)
  • description.provenance : Made available in DSpace on 2013-04-08T21:11:01Z (GMT). No. of bitstreams: 1 RobinsonWDouglasFisheriesWildlifeGreaterSageGrouse.pdf: 318305 bytes, checksum: 22022b8fbf49b921a2bff8dfbce8c667 (MD5) Previous issue date: 2011-11
  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2013-04-08T21:10:19Z No. of bitstreams: 1 RobinsonWDouglasFisheriesWildlifeGreaterSageGrouse.pdf: 318305 bytes, checksum: 22022b8fbf49b921a2bff8dfbce8c667 (MD5)

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