| A new species of nematode worm from the sage grouse | WEHR, EVERETT E. | 1931 |
A new species of nematode worm from the sage grouseKeywordsNo keywords available AbstractHabronema urophasiana* (p. 1), Montana, from gizzard of a sage grouse, Centro-cercus urophasianus. Key to North American spp. of Habronema in birds. AuthorsWEHR, EVERETT E. Year Published1931 PublicationProc U S Nation Mus Locations |
| Sage grouse in Saskatchewan | BRADSHAW, F. | 1929 |
Sage grouse in SaskatchewanKeywordsNo keywords available AbstractNotes on food, nesting, and other habits. AuthorsBRADSHAW, F. Year Published1929 PublicationCanadian Field Nat Locations |
| Greater Sage-Grouse: General Use and Roost Site Occurrence with Pellet Counts as a Measure of Relative Abundance | Hanser, S.E. | 2011 |
Greater Sage-Grouse: General Use and Roost Site Occurrence with Pellet Counts as a Measure of Relative AbundanceKeywordsNo keywords available AbstractGreater sage-grouse (Centrocercus
urophasianus) have been declining
both spatially and numerically throughout their range because of anthropogenic disturbance and loss and fragmentation of sagebrush (Artemisia spp.) habitats. Understanding
how sage-grouse respond to
these habitat alterations and disturbances,
particularly the types of disturbances
and extent at which they respond, is critical
to designing management actions and
prioritizing areas of conservation. To address
these needs, we developed statistical
models of the relationships between
occurrence and abundance of greater
sage-grouse and multi-scaled measures
of vegetation, abiotic, and disturbance in the Wyoming Basins Ecoregional Assessment (WBEA) area. Sage-grouse occurrence was strongly related to the amount of sagebrush within 1 km for both roost site and general use locations. Roost sites were identified by presence of sage-grouse
fecal pellet groups whereas general use
locations had single pellets. Proximity to
anthropogenic disturbance including energy development, power lines, and major roads was negatively associated with sagegrouse occurrence. Models of sage-grouse occurrence correctly predicted active lek locations with >75% accuracy. Our spatially explicit models identified areas of high occurrence probability in the WBEA area that can be used to delineate areas for conservation and refine existing conservation
plans. These models can also facilitate
identification of pathways and corridors
important for maintenance of sage-grouse population connectivity. AuthorsHanser, S. E., C. L. Aldridge, M. Leu, M. M. Rowland, S. E. Nielsen, and S. T. Knick Year Published2011 PublicationSagebrush Ecosystem Conservation and Management LocationsAdditional Information:http://sagemap.wr.usgs.gov/Docs/WBEA/wbea_chap_5_sagegrouse_2mb.pdf |
| Saving sage-grouse from the trees: A proactive solution to reducing a key threat to a candidate species | Baruch-Mordo, Sharon | 2013 |
KeywordsConifer encroachment; Ecological economics; Juniperus occidentalis; Proactive management; Random forest models; Sage-Grouse Initiative; Spatial wavelet analysis AbstractConservation investment in management of at-risk species can be less costly than a delay-and-repair approach implemented after species receive legal protection. The United States Endangered Species Act candidate species designation represents an opportunity to implement proactive management to avoid future listing. Such efforts require substantial investments, and the challenge becomes one of optimization of limited conservation funds to maximize return. Focusing on conifer encroachment threats to greater sage-grouse (Centrocercus urophasianus), we demonstrated an approach that links species demographics with attributes of conservation threats to inform targeting of investments. We mapped conifer stand characteristics using spatial wavelet analysis, and modeled lek activity as a function of conifer-related and additional lek site covariates using random forests. We applied modeling results to identify leks of high management potential and to estimate management costs. Results suggest sage-grouse incur population-level impacts at very low levels of encroachment, and leks were less likely to be active where smaller trees were dispersed. We estimated costs of prevention (treating active leks in jeopardy) and restoration (treating inactive leks with recolonization potential) management across the study area (2.5 million ha) at a total of US$17.5 million, which is within the scope of landscape-level conservation already implemented. An annual investment of US$8.75 million can potentially address encroachment issues near all known Oregon leks within the next decade. Investments in proactive conservation with public and private landowners can increase ecosystem health to benefit species conservation and sustainable land uses, replace top-down regulatory approaches, and prevent conservation reliance of at-risk species. AuthorsReese, Kerry P., Naugle, David E., Evans, Jeffrey S., Hagen, Christian A., Baruch-Mordo, Sharon, Severson, John P., Maestas, Jeremy D., Kiesecker, Joseph M. and Falkowski, Michael J. Year Published2013 PublicationBiological Conservation LocationsDOI10.1016/j.biocon.2013.08.017 |
| Forb Nutrient Density for Sage Grouse Broods in Mountain Big Sagebrush Communities, Montana | Whitehurst, William | 2013 |
Keywordsmountain big sagebrush, forbs, sage grouse, sage grouse brood survival, forb nutrient density, sagebrush canopy cover, sagebrush composition by weight, total digestible nutrients, crude protein, calcium, phosphorus AbstractSage grouse and grazing livestock numbers have both decreased dramatically over the last half of the 20th century.
Forb density is critical for preincubating sage grouse hens and survival of young broods.
Although sagebrush is needed for sage grouse cover and winter feed, recommended canopy cover levels may be too high to create a forb-rich herbaceous understory.
Higher forb nutrient density for breeding hens and young broods could be achieved with targeted cattle grazing and selective thinning of mature mountain big sagebrush stands. AuthorsWhitehurst, William and Marlow, Clayton Year Published2013 PublicationRangelands LocationsDOI10.2111/RANGELANDS-D-13-00002.1 |
| Grazing for Fuels Management and Sage Grouse Habitat Maintenance and Recovery A Case Study From Squaw Valley Ranch | Freese, Erica | 2013 |
Keywordswildfire, livestock, federal land, private land AbstractProperly applied grazing management may reduce fire frequency in annual grass–invaded sagebrush communities.
Grazing can be a cost-effective tool for reducing fire potential and protecting sage grouse habitat from burning.
Squaw Valley Ranch has been able to reduce fire frequency through preventive practices, which include intensive, appropriate livestock management on private lands.
Publicly managed lands associated with the ranch have experienced large and frequent fires, a hindrance to improving or maintaining sage grouse habitat. AuthorsFreese, Erica, Stringham, Tamzen, Simonds, G and Sant, Eric Year Published2013 PublicationRangelands LocationsDOI10.2111/RANGELANDS-D-13-00008.1 Additional Information:http://srmjournals.org/doi/full/10.2111/RANGELANDS-D-13-00008.1 |
| Ecology and management of sage-grouse and sage-grouse habitat | Crawford, John A. | 2004 |
Keywordspopulation dynamics, habitat, fire ecology, livestock grazing, herbicide, landscape ecology AbstractSage-grouse (Centrocercus urophasianus and C. minimus) historically inhabited much of the sagebrush-dominated habitat of North America. Today, sage-grouse populations are declining throughout most of their range. Population dynamics of sage-grouse are marked by strong cyclic behavior. Adult survival is high, but is offset by low juvenile survival, resulting in low productivity. Habitat for sage-grouse varies strongly by life-history stage. Critical habitat components include adequate canopy cover of tall grasses (≥ 18 cm) and medium height shrubs (40–80 cm) for nesting, abundant forbs and insects for brood rearing, and availability of herbaceous riparian species for late-growing season foraging. Fire ecology of sage-grouse habitat changed dramatically with European settlement. In high elevation sagebrush habitat, fire return intervals have increased (from 12–24 to > 50 years) resulting in invasion of conifers and a consequent loss of understory herbaceous and shrub canopy cover. In lower elevation sagebrush habitat, fire return intervals have decreased dramatically (from 50–100 to < 10 years) due to invasion by annual grasses, causing loss of perennial bunchgrasses and shrubs. Livestock grazing can have negative or positive impacts on sage-grouse habitat depending on the timing and intensity of grazing, and which habitat element is being considered. Early season light to moderate grazing can promote forb abundance/availability in both upland and riparian habitats. Heavier levels of utilization decrease herbaceous cover, and may promote invasion by undesirable species. At rates intended to produce high sagebrush kill, herbicide-based control of big sagebrush may result in decreased habitat quality for sage-grouse. Light applications of tebuthiuron (N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N′-dimethylurea) can decrease canopy cover of sagebrush and increase grass and forb production which may be locally important to nesting and foraging activities. The ability of resource managers to address sage-grouse habitat concerns at large scales is aided greatly by geomatics technology and advances in landscape ecology. These tools allow unprecedented linkage of habitat and population dynamics data over space and time and can be used to retroactively assess such relationships using archived imagery. The present sage-grouse decline is a complex issue that is likely associated with multiple causative factors. Solving management issues associated with the decline will require unprecedented cooperation among wildlife biology, range science, and other professional disciplines. AuthorsSchroeder, Michael A., Crawford, John A., Miller, Richard F., Boyd, Chad S., Mosley, Jeffrey C., Gregg, Michael A., OLSON, RICH A., WEST, NEIL E. and WHITSON, TOM D. Year Published2004 PublicationRangeland Ecology & Management LocationsDOI10.2111/1551-5028(2004)057[0002:EAMOSA]2.0.CO;2 |
| SUSCEPTIBILITY OF GREATER SAGE-GROUSE TO EXPERIMENTAL INFECTION WITH WEST NILE VIRUS | Clark, Larry | 2006 |
KeywordsCentrocercus urophasianus, experimental infection, greater sage-grouse, vaccine, West Nile virus, WNV AbstractPopulations of greater sage-grouse (Centrocercus urophasianus) have declined 45– 80% in North America since 1950. Although much of this decline has been attributed to habitat loss, recent field studies have indicated that West Nile virus (WNV) has had a significant negative impact on local populations of grouse. We confirm the susceptibility of greater sage-grouse to WNV infection in laboratory experimental studies. Grouse were challenged by subcutaneous injection of WNV (103.2 plaque-forming units [PFUs]). All grouse died within 6 days of infection. The Kaplan-Meier estimate for 50% survival was 4.5 days. Mean peak viremia for nonvaccinated birds was 106.4 PFUs/ml (±100.2 PFUs/ml, standard error of the mean [SEM]). Virus was shed cloacally and orally. Four of the five vaccinated grouse died, but survival time was increased (50% survival=9.5 days), with 1 grouse surviving to the end-point of the experiment (14 days) with no signs of illness. Mean peak viremia for the vaccinated birds was 102.3 PFUs/ml (±100.6 PFUs/ml, SEM). Two birds cleared the virus from their blood before death or euthanasia. These data emphasize the high susceptibility of greater sage-grouse to infection with WNV. AuthorsKlenk, Kaci, Bowen, Richard, Clark, Larry, Hall, Jeffrey, McLean, Robert, Dunbar, Michael and Smeraski, Cynthia A. Year Published2006 PublicationJournal of Wildlife Diseases LocationsDOI10.7589/0090-3558-42.1.14 Additional Information:http://www.ncbi.nlm.nih.gov/pubmed/16699144 |
| Liver Metal Concentrations in Greater Sage-grouse (Centrocercus urophasianus) | Dailey, Rebecca N. | 2008 |
KeywordsCentrocercus urophasianus, ICP-MS, liver, metals, Sage-grouse AbstractGreater 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±0.01), chromium (Cr) (0.50±0.02), manganese (Mn) (2.68±0.11), iron (Fe) (1,019±103), nickel (Ni) (0.40±0.04), cobalt (Co) (0.08±0.02), copper (Cu) (6.43±0.40), mercury (Hg) (0.30±0.09), selenium (Se) (1.45±0.64), zinc (Zn) (59.2±4.70), molybdenum (Mo) (0.93 ± 0.07), cadmium (Cd) (1.44 ± 0.14), barium (Ba) (0.20 ± 0.03), and lead (Pb) (0.17 ± 0.03). In addition to providing baseline data, metal concentrations were compared between sex, age (juvenile/adult), and West Nile virus (WNv) groups (positive/negative). Adult birds had higher concentrations of Ni and Cd compared to juveniles. In addition, Zn and Cu concentrations were significantly elevated in WNv-positive birds. AuthorsDailey, Rebecca N., Raisbeck, Merl F., Siemion, Roger S. and Cornish, Todd E. Year Published2008 PublicationJournal of Wildlife Diseases Locations- Cambell County, Wyoming (44.3956, -105.449)
- Fremont County, Wyoming (43.012, -108.618)
- Natrona County, Wyoming (42.8314, -106.912)
- Sweetwater County, Wyoming (41.8519, -109.188)
- Park County, Wyoming (44.6782, -109.458)
- Johnson County, Wyoming (43.9557, -106.427)
- Albany County, Wyoming (41.6384, -105.594)
- Big Horn County, Wyoming (44.6036, -108.094)
- Musselshell County, Montana (46.4219, -108.407)
- Big Horn County, Montana (45.3497, -107.272)
- Fergus County, Montana (47.2127, -109.414)
- Missoula County, Montana (47.0241, -113.687)
- Phillips County, Montana (48.4519, -107.878)
- Campbell county, Wyoming (44.2483, -105.548)
- Fremont County, Wyoming (43.0403, -108.63)
- Natrona County, Wyoming (42.9622, -106.798)
- Sweetwater County, Wyoming (41.6594, -108.879)
- Park County, Wyoming (44.5206, -109.588)
- Johnson County, Wyoming (44.0386, -106.584)
- Albany County, Wyoming (41.6544, -105.724)
- Big Horn County, Wyoming (44.5267, -107.995)
- Musselshell County, Montana (46.4964, -108.397)
- Big Horn County, Montana (45.4233, -107.489)
- Fergus County, Montana (47.2633, -109.224)
- Missoula County, Montana (46.8719, -113.994)
- Phillips County, Wyoming (48.2589, -107.913)
DOI10.7589/0090-3558-44.2.494 |
| Sage-grouse Habitat in Idaho: A Practical Guide For Land Owners and Managers | Gillan, Jeffrey K. | 2010 |
Sage-grouse Habitat in Idaho: A Practical Guide For Land Owners and ManagersKeywordsNo keywords available AbstractThe greater sage-grouse is a species in decline across the western United States, including Idaho. As implied by the name, greater sage-grouse depend on sagebrush dominated landscapes for their forage, cover, nesting habitat, and ultimate survival. The deterioration of sagebrush landscapes in the West has been crucial factor in the decline of the greater sage-grouse, which is currently a candidate species under the federal Endangered Species Act. State and federal government land managers, researchers, private landowners, and concerned citizens are leading efforts to conserve this species in Idaho. This book is largely an illustrated synthesis of the 2006 Conservation Plan for Greater Sage-grouse in Idaho, produced by the Idaho Sage-grouse Advisory Committee. Although the information in the 2006 Conservation is based on scientific research, the guidebook is meant to extend what is known about sage-grouse and their habitat to land owners and managers but is not meant to be cited as a science document itself. The intent of this guidebook is to help land owners and managers recognize characteristics of productive and unfavorable sage-grouse habitat throughout the different life stages, prompting better informed approaches to management and conservation. The focus is clearly on ranching, as opposed to other land use activities, because livestock grazing is the major land use that occurs on sage-grouse habitat. The guidebook provides information to recognize and evaluate sage-grouse habitat, but does not recommend specific grazing or land management practices. Those who manage and live within sagebrush landscapes can play a significant role in conserving sage-grouse and the habitat the depend on. This book is just a small part of the larger commitment that is being made to conserve this species.
AuthorsGillan, Jeffrey K. and Strand, Eva K. Year Published2010 PublicationIdaho College of Natural Resources LocationsAdditional Information:http://www.webpages.uidaho.edu/range/pubs/sage-grouse_guide.pdf |
