| liver metal concentrations in greater sage-grouse (centrocercus urophasianus). | greater sage-grouse (centrocercus urophasianus) are a species of concern due to shrinking populations associated with habitat fragmentation and loss. baseline health parameters for this species are limited or lacking, especially with regard to tissue metal concentrations. to obtain a range of tissue metal concentrations, livers were collected from 71 greater sage-grouse from wyoming and montana. mean +/- se metal concentrations (mg/kg wet weight) in liver were determined for vanadium (v) (0.12 + ... | 2008 | 18436686 |
| modeling fence location and density at a regional scale for use in wildlife management. | barbed and woven wire fences, common structures across western north america, act as impediments to wildlife movements. in particular, fencing influences pronghorn (antilocapra americana) daily and seasonal movements, as well as modifying habitat selection. because of fencing's impacts to pronghorn and other wildlife, it is a potentially important factor in both wildlife movement and habitat selection models. at this time, no geospatial fencing data is available at regional scales. consequently, ... | 2014 | 24416180 |
| factors contributing to process variance in annual survival of female greater sage-grouse in montana. | populations of greater sage-grouse (centrocercus urophasianus) have declined by 69-99% from historic levels, and information on population dynamics of these birds at a landscape scale is essential to informed management. we examined the relationships between hen survival and a suite of landscape-scale habitat and environmental conditions. we radio-marked 237 female sage-grouse and measured 426 vegetation plots during 2001-2004 at four sites in a 3200-km2 landscape in north-central montana, usa. ... | 2006 | 16937816 |