Sage-grouse
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Overall, adult males attended leks at higher rates (0.683 at peak) and earlier in the season (19 March) than subadults (0.421 at peak on April 19). Peak attendance probability was positively related to cumulative winter precipitation. Daily probabilities of lek switching differed between adults (0.019 at peak on March 3) and subadults (0.046 at peak on March 22), and lek switching was negatively related to distance to nearest lek. Our results indicate variable patterns in lek attendance through time, and that lek switching may occur at higher rates than previously thought. We demonstrate the use of generalizable daily attendance curves to date‐correct lek counts and derive estimates of male abundance, although such an approach will likely require the incorporation of information on age structure to produce robust results that are useful for population monitoring.
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Using the greater sage-grouse, a species highly dependent upon sagebrush landscapes, we (1) evaluated how females select nesting habitats based on sagebrush type, along with livestock grazing related linear and point features, and other biotic, abiotic characteristics, given hypothesized influences on hiding cover, microclimate and predator travel routes and perches, (2) compared habitat selection information with results for nest survival estimates to evaluate if selection appears to be adaptive or not, and (3) used our results to evaluate the most appropriate strategies for this species in a grazing-modified landscape.
Nest survival in preferred sagebrush type was one-fourth the rate in type avoided. Nest survival was four times higher when placed >100 m away from nearest fence. Timing of graze could best achieve herbaceous requirements for successful nesting. Fence modifications along with prioritization of sagebrush type are discussed.
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Overall, greater sage-grouse selected areas that were 1) distant from trees, paved roads, and powerlines; 2) high in elevation; 3) near treatment edges; and 4) consisting of gentle slopes. Post-treatment sage-grouse showed stronger selection for treatments and treatment edges than did pretreatment sage-grouse. Maps predicting probability of selection by brood-rearing sage-grouse showed increased use in and around mechanically treated areas. This altered pattern of selection by sage-grouse with broods suggests mechanical treatments may be a suitable way to increase use of mountain big sagebrush during the brooding period.
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Large-scale encroached conifer removal is an increasingly widespread practice that benefits rangeland productivity and restores habitat quality for sagegrouse and other sagebrush-dependent wildlife. Recent studies show that after encroached conifers are removed, sage-grouse occupancy, nest survival, and brood success are greatly improved. Studies also show that sagebrush songbirds recolonize rapidly following encroached conifer removal.
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Abstracts of Recent Papers on Range Management in the West. Prepared by Charlie Clements, Rangeland Scientist, USDA Agricultural Research Service, Reno, NV
View field guide.
This field guide is a tool for the identification of 119 common forbs found in the sagebrush rangelands and grasslands of the northern Great Basin. These forbs are important because they are either browsed directly by Greater Sage-grouse or support invertebrates that are also consumed by the birds. Species are arranged alphabetically by genus and species within families. Each species has a botanical description and one or more color photographs to assist the user. Most descriptions mention the importance of the plant and how it is used by Greater Sage-grouse.
Access session recordings. Use password: SAGE2019
All Lands Summit was held at the Salt Lake City Downtown Radisson Hotel on Feb 5-7, 2019.
Read UT Conservation Plan.
This Plan identifies strategies to address localized threats to sage-grouse populations in Utah. Those strategies include—but are not limited to—the following:
- Identify the highest-priority sage-grouse habitats and migration corridors, and protect at least 5,000 of those acres annually through conservation easements, or other mechanisms.
- Improve and increase sage-grouse seasonal habitats by 75,000 acres each year, including riparian and mesic habitats.
- Monitor sage-grouse population trends annually and, if necessary, implement adaptive management responses to ensure that priority populations remain viable and stable.
- Coordinate with local, state and federal firefighting jurisdictions to include sage-grouse habitats as a priority during pre-fire attack planning and suppression, second only to the protection of human life and property.
- Fund, support and implement critical research that supports the implementation of this Plan.
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This study found substantial evidence for the ability of all markers to reduce collisions (~ 57% reduction), with little difference between the tested marker types. It found strong evidence for lower collision probabilities at fences with wood posts and on fences farther from leks. Results also indicated a negative relationship between collision probabilities and the difference between fence and vegetation heights. There was little evidence for differences in collision risk between areas defined as “high” or “moderate” risk in a pre-existing collision risk map. Findings recommend integrating fence marking into conservation practices requiring fencing, and prioritizing fence marking near leks in areas with greater fence exposure.
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A study comparing insect communities in grazed, rested, and idled pastures in Montana found that the types of insects that provide a critical food source for sage grouse chicks and other shrub- and grassland-dependent birds were 13 percent more prevalent on managed versus idled rangelands.