scholarly journals SAGEMAP: A web-based spatial dataset for sage grouse and sagebrush steppe management in the Intermountain West

Fact Sheet ◽  
2002 ◽  
pp. 1-2 ◽  
Author(s):  
Steven T. Knick ◽  
Linda Schueck
1987 ◽  
Vol 41 (2) ◽  
pp. 125-132 ◽  
Author(s):  
Jon E. Swenson ◽  
Claire A. Simmons ◽  
Charles D. Eustace
Keyword(s):  

Western Birds ◽  
2017 ◽  
Vol 48 (1) ◽  
pp. 35-55 ◽  
Author(s):  
Robert A. Miller ◽  
Laura Bond ◽  
Patrick N. Migas ◽  
Jay D. Carlisle ◽  
Gregory S. Kaltenecker

Circular ◽  
2015 ◽  
Author(s):  
David A. Pyke ◽  
Jeanne C. Chambers ◽  
Mike Pellant ◽  
Steven T. Knick ◽  
Richard F. Miller ◽  
...  

2002 ◽  
Vol 16 (5) ◽  
pp. 1223-1231 ◽  
Author(s):  
Michael J. Wisdom ◽  
Mary M. Rowland ◽  
Barbara C. Wales ◽  
Miles A. Hemstrom ◽  
Wendel J. Hann ◽  
...  

Circular ◽  
2015 ◽  
Author(s):  
David A. Pyke ◽  
Steven T. Knick ◽  
Jeanne C. Chambers ◽  
Mike Pellant ◽  
Richard F. Miller ◽  
...  

Circular ◽  
2017 ◽  
Author(s):  
David A. Pyke ◽  
Jeanne C. Chambers ◽  
Mike Pellant ◽  
Richard F. Miller ◽  
Jeffrey L. Beck ◽  
...  

2020 ◽  
Vol 31 (2) ◽  
pp. 57-60
Author(s):  
Shannon L. Clark

Invasive winter annual grasses are one of the largest threats to the arid and semiarid rangelands and wildlands in the Intermountain West of North America. The most impactful species include downy brome (Bromus tectorum), medusahead (Taeniatherum caput-medusae), ventenata (Ventenata dubia), and to a lesser extent Japanese brome (Bromus japonicus), feral rye (Secale cereale), and jointed goatgrass (Aegilops cylindrica). These winter annuals can germinate in the fall, winter or early spring, exploiting soil moisture and nutrients before native plant communities begin active growth in the spring. These characteristics impart a competitive advantage in the perennial grass dominated natural landscapes of the Intermountain West. Downy brome, a winter annual grass native to Eurasia, is the most widespread invasive species in the western US covering an estimated 22 million ha and a projected 14% annual spread rate. Invasive winter annuals negatively impact these ecosystems by depleting soil moisture and nutrients, reducing native plant productivity and diversity, altering fire frequency, and diminishing pollinator and wildlife habitat. Large amounts of litter which act as a fuel source are left after these grasses senesce early in the summer, greatly increasing the frequency and spread of wildfires in invaded areas. Historically, fire frequency in the 41 million ha sagebrush steppe occurred every 60 to 110 years, but this interval has been shortened to less than every five years since the introduction of invasive annual grasses. Annual grasses quickly (re)invade after these fires while sagebrush (Artemisia spp.), the dominant vegetation type in the sagebrush steppe, can take decades to recover. Therefore, the altered fire regime has resulted in a substantial loss of sagebrush and converted millions of hectares into monocultures of winter annual grass. This altered fire regime also negatively impacted the abundance of small mammals, birds, larger browsing mammals, and pollinating insects in the sagebrush steppe. Managing the weed seedbank is the key to long-term control of invasive winter annual grasses on rangelands and wildlands. Past herbicides have provided adequate short-term control but have often failed due to annual grasses reinvading from the soil seedbank. Indaziflam is a new tool for land managers to achieve multi-year control of the annual grass seedbank while promoting restoration of native species. As wildlife and pollinator habitat continue to be degraded and fragmented through development and agricultural production, indaziflam is a viable option for restoring the rangelands and wildlands impacted by winter annual grasses in the Intermountain West that serve as critical habitat areas.


2019 ◽  
Vol 11 (7) ◽  
pp. 2023-2034 ◽  
Author(s):  
Kevin P Oh ◽  
Cameron L Aldridge ◽  
Jennifer S Forbey ◽  
Carolyn Y Dadabay ◽  
Sara J Oyler-McCance

Abstract Sage-grouse are two closely related iconic species of the North American West, with historically broad distributions across sagebrush-steppe habitat. Both species are dietary specialists on sagebrush during winter, with presumed adaptations to tolerate the high concentrations of toxic secondary metabolites that function as plant chemical defenses. Marked range contraction and declining population sizes since European settlement have motivated efforts to identify distinct population genetic variation, particularly that which might be associated with local genetic adaptation and dietary specialization of sage-grouse. We assembled a reference genome and performed whole-genome sequencing across sage-grouse from six populations, encompassing both species and including several populations on the periphery of the species ranges. Population genomic analyses reaffirmed genome-wide differentiation between greater and Gunnison sage-grouse, revealed pronounced intraspecific population structure, and highlighted important differentiation of a small isolated population of greater sage-grouse in the northwest of the range. Patterns of genome-wide differentiation were largely consistent with a hypothesized role of genetic drift due to limited gene flow among populations. Inferred ancient population demography suggested persistent declines in effective population sizes that have likely contributed to differentiation within and among species. Several genomic regions with single-nucleotide polymorphisms exhibiting extreme population differentiation were associated with candidate genes linked to metabolism of xenobiotic compounds. In vitro activity of enzymes isolated from sage-grouse livers supported a role for these genes in detoxification of sagebrush, suggesting that the observed interpopulation variation may underlie important local dietary adaptations, warranting close consideration for conservation strategies that link sage-grouse to the chemistry of local sagebrush.


1998 ◽  
Vol 62 (9) ◽  
pp. 671-674
Author(s):  
JF Chaves ◽  
JA Chaves ◽  
MS Lantz
Keyword(s):  

2013 ◽  
Vol 23 (3) ◽  
pp. 82-87 ◽  
Author(s):  
Eva van Leer

Mobile tools are increasingly available to help individuals monitor their progress toward health behavior goals. Commonly known commercial products for health and fitness self-monitoring include wearable devices such as the Fitbit© and Nike + Pedometer© that work independently or in conjunction with mobile platforms (e.g., smartphones, media players) as well as web-based interfaces. These tools track and graph exercise behavior, provide motivational messages, offer health-related information, and allow users to share their accomplishments via social media. Approximately 2 million software programs or “apps” have been designed for mobile platforms (Pure Oxygen Mobile, 2013), many of which are health-related. The development of mobile health devices and applications is advancing so quickly that the Food and Drug Administration issued a Guidance statement with the purpose of defining mobile medical applications and describing a tailored approach to their regulation.


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