Relevant bibliographies by topics / Centrocercus urophasianus

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books

Academic literature on the topic 'Centrocercus urophasianus'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Centrocercus urophasianus.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Centrocercus urophasianus"

1

Aldridge, Cameron L., Sara J. Oyler-McCance, and R. Mark Brigham. "Occurrence of Greater Sage-Grouse × Sharp-Tailed Grouse Hybrids in Alberta." Condor 103, no. 3 (August 1, 2001): 657–60. http://dx.doi.org/10.1093/condor/103.3.657.

Full text
Abstract:
Abstract Two distinct grouse were regularly observed at two Greater Sage-Grouse (Centrocercus urophasianus) leks in both 1999 and 2000 in southeastern Alberta. Physically and behaviorally, the birds exhibited characteristics of both Greater Sage-Grouse and Sharp-tailed Grouse (Tympanuchus phasianellus), suggesting they were hybrids. DNA analyses of blood and feather samples indicated that both birds were males with Greater Sage-Grouse mothers and thus, fathers that were likely Sharp-tailed Grouse. Ocurrencia de Híbridos entre Centrocercus urophasianus y Tympanuchus phasianellus en Alberta Resumen. Dos aves distintivas fueron observadas con regularidad en dos asambleas de cortejo de Centrocercus urophasianus en el sureste de Alberta tanto en 1999 como en 2000. Las aves presentaban características físicas y de comportamiento tanto de C. urophasianus como de Tympanuchus phasianellus, lo que sugiere que se trataba de individuos híbridos. Análisis de ADN extraído de muestras de sangre y plumas indicaron que ambos individuos eran machos hijos de hembras de C. urophasianus. Por tanto, sus padres probablemente eran T. phasianellus.
APA, Harvard, Vancouver, ISO, and other styles
2

Spurrier, Margo Frost, Mark S. Boyce, and Bryan F. J. Manly. "Lek behaviour in captive sage grouse Centrocercus urophasianus." Animal Behaviour 47, no. 2 (February 1994): 303–10. http://dx.doi.org/10.1006/anbe.1994.1043.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Schroeder, Michael A., Cameron L. Aldridge, Anthony D. Apa, Joseph R. Bohne, Clait E. Braun, S. Dwight Bunnell, John W. Connelly, et al. "Distribution of Sage-Grouse in North America." Condor 106, no. 2 (May 1, 2004): 363–76. http://dx.doi.org/10.1093/condor/106.2.363.

Full text
Abstract:
Abstract We revised distribution maps of potential presettlement habitat and current populations for Greater Sage-Grouse (Centrocercus urophasianus) and Gunnison Sage- Grouse (C. minimus) in North America. The revised map of potential presettlement habitat included some areas omitted from previously published maps such as the San Luis Valley of Colorado and Jackson area of Wyoming. Areas excluded from the revised maps were those dominated by barren, alpine, and forest habitats. The resulting presettlement distribution of potential habitat for Greater Sage-Grouse encompassed 1 200 483 km2, with the species' current range 668 412 km2. The distribution of potential Gunnison Sage-Grouse habitat encompassed 46 521 km2, with the current range 4787 km2. The dramatic differences between the potential presettlement and current distributions appear related to habitat alteration and degradation, including the adverse effects of cultivation, fragmentation, reduction of sagebrush and native herbaceous cover, development, introduction and expansion of invasive plant species, encroachment by trees, and issues related to livestock grazing. Distribución de Centrocercus spp. en América del Norte Resumen. Revisamos los mapas de distribución potencial precolombino y de poblaciones actuales de Centrocerus urophasianus y C. minimus en América del Norte. El mapa modificado de hábitat potencial precolombino incluyó algunas áreas omitidas de mapas anteriormente publicados, como el Valle San Luis de Colorado y el área de Jackson, Wyoming. Las áreas excluídas de los mapas modificados fueron las dominadas por hábitats forestales, alpinos y estériles. La distribución precolombina resultante para C. urophasianus abarcó 1 200 483 km2, con un territorio actual de 668 412 km2. La distribución de habitat potencial para C. minimus abarcó 46 521 km2, con un territorio actual de 4787 km2. Estos contrastes tan marcados parecen estar relacionados con la modificación y degradación del hábitat, incluyendo los efectos nocivos de la agricultura, la fragmentación de hábitat, la disminución de Artemisia spp. y otras coberturas herbáceas nativas, el desarollo, la introducción y la expansión de especies de plantas invasoras, la invasión de árboles y cuestiones relacionadas con pastoreo de ganado.
APA, Harvard, Vancouver, ISO, and other styles
4

Dailey, Rebecca N., Merl F. Raisbeck, Roger S. Siemion, and Todd E. Cornish. "Liver Metal Concentrations in Greater Sage-grouse (Centrocercus urophasianus)." Journal of Wildlife Diseases 44, no. 2 (April 2008): 494–98. http://dx.doi.org/10.7589/0090-3558-44.2.494.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Reese, Kerry P., and John W. Connelly. "Translocations of sage grouse Centrocercus urophasianus in North America." Wildlife Biology 3, no. 1 (January 1997): 235–41. http://dx.doi.org/10.2981/wlb.1997.029.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Fletcher, Quinn E., Craig W. Dockrill, D. Joanne Saher, and Cameron L. Aldridge. "Northern Harrier, Circus cyaneus, Attacks on Greater Sage-Grouse, Centerocercus urophasianus, in Southern Alberta." Canadian Field-Naturalist 117, no. 3 (July 1, 2003): 479. http://dx.doi.org/10.22621/cfn.v117i3.814.

Full text
Abstract:
The Greater Sage-Grouse (Centrocercus urophasianus) is an endangered species in Canada, making it critical to understand all known causes of mortality. We report the first recorded observations of female Northern Harrier (Circus cyaneus) attacks on male Greater Sage-Grouse. Although no attacks were successful, our observations suggest that Northern Harriers are predators of Greater Sage-Grouse.
APA, Harvard, Vancouver, ISO, and other styles
7

Aldridge, Cameron L., and R. Mark Brigham. "Nesting and Reproductive Activities of Greater Sage-Grouse in a Declining Northern Fringe Population." Condor 103, no. 3 (August 1, 2001): 537–43. http://dx.doi.org/10.1093/condor/103.3.537.

Full text
Abstract:
Abstract In Canada, Greater Sage-Grouse (Centrocercus urophasianus) are at the northern edge of their range, occurring only in southeastern Alberta and southwestern Saskatchewan. The population in Canada has declined by 66% to 92% over the last 30 years. We used radio-telemetry to follow 20 female Greater Sage-Grouse and monitor productivity in southeastern Alberta, and to assess habitat use at nesting and brood-rearing locations. All females attempted to nest. Mean clutch size (7.8 eggs per nest) was at the high end of the normal range for sage-grouse (typically 6.6–8.2). Nest success (46%) and breeding success (55%) were within the range found for more southerly populations (15% to 86% and 15% to 70%, respectively). Thirty-six percent of unsuccessful females attempted to renest. Fledging success was slightly lower than reported in other studies. Thus, reproductive effort does not appear to be related to the population decline. However, chick survival to ≥50 days of age (mean = 18%) was only about half of that estimated (35%) for a stable or slightly declining population, suggesting that chick survival may be the most important factor reducing overall reproductive success and contributing to the decline of Greater Sage-Grouse in Canada. Actividades de Anidación y Reproducción de Centrocercus urophasianus en una Población del Extremo Norte en Declive Resumen. En Canadá, Centrocercus urophasianus está en el extremo norte de su distribución, encontrándose sólo en el sureste de Alberta y el suroeste de Saskatchewan. La población de Canadá ha disminuido entre el 66% y 92% durante los últimos 30 años. Utilizamos radio-telemetría para seguir a 20 hembras de C. urophasianus y monitorear su productividad en el sureste de Alberta y para evaluar el uso de hábitat en sitios de anidación y de cría de los pichones. Todas las hembras intentaron anidar. El tamaño promedio de la nidada (7.8 huevos por nido) estuvo en el extremo superior del rango normal de C. urophasianus (típicamente 6.6–8.2). El éxito de anidación (46%) y de reproducción (55%) estuvieron dentro de los rangos encontrados en poblaciones de más al sur (15% a 86% y 15% a 70%, respectivamente). El treinta y seis por ciento de las hembras que no tuvieron éxito intentaron volver a anidar. El éxito en la crianza de polluelos hasta la etapa de volantones fue ligeramente menor que el reportado en otros estudios. Por lo tanto, el esfuerzo reproductivo no parece estar relacionado con el declive poblacional. Sin embargo, la supervivencia de los polluelos hasta 50 días de edad o más (promedio = 18%) fue sólo aproximadamente la mitad de lo que se ha estimado para una población estable o en ligero declive (35%), lo que sugiere que la supervivencia de los pichones podría ser el factor más importante reduciendo el éxito reproductivo en general y contribuyendo al declive de C. urophasianus en Canadá.
APA, Harvard, Vancouver, ISO, and other styles
8

Sinai, Nancy L., Peter S. Coates, Katelyn M. Andrle, Chad Jefferis, C. Gabriel Sentíes–Cué, and Maurice E. Pitesky. "A Serosurvey of Greater Sage-Grouse (Centrocercus urophasianus) in Nevada, USA." Journal of Wildlife Diseases 53, no. 1 (January 2017): 136–39. http://dx.doi.org/10.7589/2015-10-285.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Taylor, S. E., S. J. Oyler-Mccance, and T. W. Quinn. "Isolation and characterization of microsatellite loci in Greater Sage-Grouse (Centrocercus urophasianus)." Molecular Ecology Notes 3, no. 2 (June 2003): 262–64. http://dx.doi.org/10.1046/j.1471-8286.2003.00424.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Young, Jessica R., Jerry W. Hupp, Jack W. Bradbury, and Clait E. Braun. "Phenotypic divergence of secondary sexual traits among sage grouse, Centrocercus urophasianus, populations." Animal Behaviour 47, no. 6 (June 1994): 1353–62. http://dx.doi.org/10.1006/anbe.1994.1183.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Centrocercus urophasianus"

1

Woodward, Jennifer Kristy. "Greater sage-grouse (Centrocercus urophasianus) habitat in Central Montana." Thesis, Montana State University, 2006. http://etd.lib.montana.edu/etd/2006/woodward/WoodwardJ1206.pdf.

Full text
Abstract:
Greater sage-grouse (Centrocercus urophasianus) habitat was studied in central Montana primarily on Wyoming big sagebrush (Artemisia tridentata wyomingensis) dominated rangeland. The primary objective was to compare shrub and herbaceous parameters within (use, random or non-use) and between seasonal habitats (nest, brood, winter). Nesting occurred in areas with greater total shrub cover (15v13%) and height (28v26 cm), and taller live (12v11 cm) and residual grass (9v8 cm) than randomly available. The shrubs under which hens nested were taller (50v44 cm) and more productive (61v51 g) than random shrubs. Due to increased precipitation in 2005, total herbaceous (18v13%), grass (15v12%), and forb cover (7v3%), and live grass height (13v10 cm) were greater in 2005 than 2004. Brood and paired random sites were similar for all parameters. There was greater shrub height (29v25 cm), total herbaceous cover (19v16%), forb cover (15v13%), and live grass height (17v11 cm) in 2005 than 2004. Shrub density (1.5v1.1/m²) and residual grass height (9v5 cm) were greater in 2004. Both winters were mild as no month had > 20 cm total snowfall. Shrub height was greater at winter non-use sites than use sites in 2005 (36v32 cm), but similar in 2004 (27v27 cm). Shrub height was different between years. Despite mild winters, shrub cover (12v10%) and density (1.2v0.8/m²) were greater at winter use sites than non-use sites although residual grass height (19v18 cm) and cover (13v14%) were similar. Winter use sites had less shrub cover than nest sites (12v15%). The nest and brood habitat and winter and brood habitat had similar shrub cover, density, and height. Herbaceous vegetation was more important during nesting and brood rearing than in winter. Some portions of grouse habitat may benefit from management for greater herbaceous cover, but never at the sake of less sagebrush. Sagebrush cover from 5 to 36% was the most consistent component of sage-grouse habitat. The differences between cover for nesting (15%), brood (14%), and winter (12%) were small. Therefore, any manipulation attempting to improve one seasonal habitat would impact the others.
APA, Harvard, Vancouver, ISO, and other styles
2

Caudill, Danny. "Factors Affecting Greater Sage-Grouse (Centrocercus Urophasianus) Survival and Movement in South-Central Utah." DigitalCommons@USU, 2011. https://digitalcommons.usu.edu/etd/1041.

Full text
Abstract:
Greater sage-grouse (Centrocercus urophasianus) adult and juvenile survival have been identified as critical demographic parameters. However, little is known regarding the dynamics of juvenile sage-grouse. From 2008-2010, I used radio-telemetry and 2 transmitter types to monitor 91 juvenile sage-grouse. Program MARK was used to analyze survival data. Over-winter survival was 0.802 - 0.982 and 0.687 - 0.969 for females and males, respectively. Fall survival rates were 0.522 - 0.623 for females and 0.332 - 0.449 for males. Survival from fall through winter was 0.418 - 0.616 for females and 0.228 - 0.435 for males. For both years combined, the probability predation caused death was 0.705, and probability harvest caused death was 0.159. The probability unreported harvest caused death was 0.091. Sex (p= 0.103) and transmitter type (p = 0.09) affected survival. Back-mounted transmitters negatively affected survival and their use should be avoided to minimize experimental bias.
APA, Harvard, Vancouver, ISO, and other styles
3

Lane, Vanessa Rae. "Sage-Grouse (Centrocercus urophasianus) Nesting and Brood-Rearing Sagebrush Habitat Characteristics in Montana and Wyoming." Thesis, Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/lane/LaneV0805.pdf.

Full text
Abstract:
Nesting and brood-rearing habitat data for greater sage-grouse (Centrocercus urophasianus) near Roundup in central Montana in 2004, Decker in south-central Montana and northern Wyoming in 2003, and Malta in north-central Montana in 2003 was collected. Sage-grouse hens were fitted with radio collars and tracked to nests. Wyoming big sagebrush (Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young) canopy cover, density, and height for nest vs. random sites and brood vs. random sites were compared to determine if hens were selecting for these parameters. Forb, grass, total herbaceous, and residual cover, grass height, and residual height were also compared. Nest sites near Roundup (53 nest sites), Decker (58), and Malta (45) were measured. Most nest sites near Roundup were in sagebrush (91 %). All nest sites near Decker and Malta were in sagebrush. Only nest sites in sagebrush habitats were analyzed. Nest sites had taller (48 vs. 42 cm, P ≤ 0.01) and more productive (60 vs. 46 g of produced forage, P ≤ 0.01) nest shrubs than random sites near Roundup. At the Decker study area, nest sites had greater sagebrush cover (22 vs. 14 %, P ≤ 0.01), density (1.1 vs. 0.6 shrubs per m2, P ≤ 0.01), and taller shrubs within 15 m (52 vs. 42 cm, P ≤ 0.01) than random sites. Nest sites had taller shrubs within 15 m of the nest (30 vs. 26 cm, P ≤ 0.05) near Malta. Successful and failed nest sites did not differ between the Roundup and Decker study areas. Yearling nest sites had shorter grass than adult sites in Roundup (9 vs. 11 cm, P ≤ 0.05). Forty-four brood sites near Roundup and 73 brood sites near Decker were measured. Brood sites were not measured near Malta. Most brood sites near Roundup (71 %) and all near Decker (100 %) were in sagebrush. Only brood sites in sagebrush habitats were analyzed. Vegetation was similar between brood and paired random sites near Roundup. At the Decker study area, brood sites had denser sagebrush (1.1 vs. 0.6 shrubs per m2, P ≤ 0.01) than random sites. Adult and yearling hen brood sites did not differ near Roundup. Adult brood sites had greater sagebrush cover (14 vs. 8 %, P ≤ 0.05), density (1.0 vs. 0.6 shrubs per m2, P ≤ 0.05), and taller shrubs within 15 m (44 vs. 37 cm, P ≤ 0.05) than yearling sites near Decker. Brood sites had less shrub cover at 4 weeks than weeks 1 and 2 (10 vs. 16 and 17 %, P ≤ 0.01) near Roundup. Sagebrush habitats comprised 97 % (151 of 156) of the total nest sites and 92 % (108 of 117) of all brood locations. Nest sites had 19-22 % sagebrush cover, 26-52 cm sagebrush heights, and total herbaceous cover of 13-33 %. Brood sites had 12-13 % sagebrush cover, 22-43 sagebrush heights, and 14-33 % total herbaceous cover. This study reinforces the importance of sagebrush habitats for nesting and brood-rearing sage-grouse. Management practices which remove this shrub would probably reduce the nesting and brood-rearing success of sage-grouse in central Montana and northern Wyoming.
APA, Harvard, Vancouver, ISO, and other styles
4

Holloran, Matthew J. "Greater sage-grouse (Centrocercus urophasianus) population response to natural gas field development in western Wyoming." Laramie, Wyo. : University of Wyoming, 2005. http://www.voiceforthewild.org/SageGrouseStudies/Matt%5FHolloran%5FVersion4.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Blickley, Jessica Leigh. "The effects of anthropogenic noise on Greater Sage-Grouse ( Centrocercus urophasianus) lek attendance, communication, and behavior." Thesis, University of California, Davis, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3565479.

Full text
Abstract:

Noise associated with human activity is widespread and expanding rapidly in terrestrial environments, but there is still much to learn about its effects on animals. To determine the effect of introduced noise on lek attendance and strutting behavior, I played back recorded continuous and intermittent anthropogenic sounds associated with natural gas drilling and roads at leks of Greater Sage-Grouse (Centrocercus urophasianus). For 3 breeding seasons, I monitored sage-grouse abundance at leks with and without noise. Peak male attendance (i.e., abundance) at leks experimentally treated with noise from natural gas drilling and roads decreased 29% and 73% respectively relative to paired controls. Decreases in abundance at leks treated with noise occurred in the first year of the study and were sustained throughout the experiment. There was limited evidence for an effect of noise playback on peak female attendance during the experiment or on male attendance the year after the experiment ended. These results suggest that sage-grouse avoid leks with anthropogenic noise and that intermittent noise has a greater effect on attendance than continuous noise. To quantify the potential for noise from natural gas infrastructure to mask sage-grouse vocalizations over both long and short distances, I analyzed both the individual notes of mating vocalizations produced by male sage-grouse and recordings of such noise. Noise produced by natural gas infrastructure is predicted to mask sage-grouse vocalizations substantially, reducing the active space of detection and discrimination of all vocalization components, particularly impacting notes that are low frequency and low amplitude. Such masking could increase the difficulty of mate assessment for lekking sage-grouse. Significant impacts to sage-grouse populations have been measured at noise levels that predict little to no masking. I investigated whether male sage-grouse adjust the repetition and timing of their strut displays in response to playback of noise associated with natural gas development. I compared the signaling behavior of male sage-grouse on leks with long-term drilling and road noise playback to that of males on similar leks with no noise playback. Males exposed to long-term drilling noise playback strutted at higher rates and in longer bouts than males on control leks, while males on road noise leks strutted at lower rates and in shorter bouts than males on control leks; these differences were only observed during close courtship, when strut rate is most important in influencing female mate choice. I did a short-term playback of intermittent traffic noise and compared the strut timing of individuals during noisy and quiet periods. Males performed fewer struts overall during noisy periods, but male strutting behavior was related to female proximity. Males that were not closely approached by females strutted less during noisy periods than quiet periods and males that engaged in close courtship with females strutted at similar rates during noisy and quiet periods, even when females were far away. Introduced noise associated with natural gas development causes large declines in sage-grouse lek attendance and is likely to cause substantial masking of sage-grouse vocalizations. However, masking is not likely to be the only mechanism of noise impact on this species. Sage-grouse may at least partially reduce masking impacts through behavioral plasticity, adjusting the timing of their signals in a manner that may reduce the impacts of masking on communication.

APA, Harvard, Vancouver, ISO, and other styles
6

Westover, Matthew D. "Habitat Selection of Greater Sage-Grouse Centrocercus urophasianus and Northern River Otters Lontra canadensis in Utah." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3937.

Full text
Abstract:
Greater sage-grouse populations have decreased steadily since European settlement in western North America. Reduced availability of brood-rearing habitat has been identified as a limiting factor for many populations. We used radio-telemetry to acquire locations of sage-grouse broods from 1998 to 2012 in Strawberry Valley, Utah. Using these locations and remotely-sensed imagery, we proceeded to 1) determine which features of brood-rearing habitat could be identified using widely available, fine-scale imagery 2) assess the scale at which sage-grouse selected brood-rearing habitat in our study area, and 3) create a predictive habitat model that could be applied across our large study area to identify areas of preferred brood-rearing habitat. We used AIC model selection to evaluate support for a list of variables derived from remotely-sensed imagery. We examined the relationship of explanatory variables at three scales (45, 200, and 795 meter radii). Our top model included 10 variables (percent shrub, percent grass, percent tree, percent paved road, percent riparian, meters of sage/tree edge, meters of riparian/tree edge, distance to tree, distance to transmission lines, and distance to permanent structures). Variables from each scale were represented in our top model with the majority of scale-sensitive variables suggesting selection at the larger (795 meter) scale. When applied to our study area our top model predicted 75% of naive brood locations suggesting reasonable success using this method and widely available NAIP (National Agricultural Imagery Program) imagery. We encourage application of this method to other sage-grouse populations and species of conservation concern. The northern river otter is a cryptic semi-aquatic predator that establishes and uses latrines. Highly used river otter latrines indicate otter "activity centers" since frequency of scat deposition is thought to be correlated to frequency of habitat use. We compared an indirect method (scat counts) and a direct method (remote cameras) of determining latrine utilization in order to assess the accuracy of the commonly used indirect method. To further compare these methods we used them to examine effects of anthropogenic disturbance on otters of the Provo River in Utah. We found that overall the direct and indirect methods were highly correlated. There was significant seasonal variation in the degree of correlation between the indirect and direct methods with correlation being significantly higher in the summer. We found similar results when using these methods to examine effects of anthropogenic disturbance. For each method the distance of the latrine to trails was significant in one of the top competing models. We suggest that space use of otters in our study area is being affected by anthropogenic disturbance as measured by distance to trails. We also suggest that scat counts should only be conducted during the summer when they correlate best with actual levels of otter activity.
APA, Harvard, Vancouver, ISO, and other styles
7

Hennefer, Jordan P. "Analyses of Greater Sage-Grouse (Centrocercus urophasianus) Translocation Release Methods and Chick Survival in Strawberry Valley, Utah." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1754.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Orning, Elizabeth Kari. "Effect of Predator Removal on Greater Sage-Grouse (Centrocercus urophasianus) Ecology in the Bighorn Basin Conservation Area of Wyoming." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/2105.

Full text
Abstract:
The decline of greater sage-grouse (Centrocercus urophasianus) populations across western North America has intensified conservation, research, and management efforts. Predator-prey interactions have been the focus of widespread scientific study, but little research has been conducted on the effects of predation and predator removal on sage-grouse ecology. This study had three main objectives: 1) identify the types of predators impacting hen survival and nest success, 2) compare the effect of predator removal on vital rates, and 3) evaluate habitat selection and movement. Over two years (2011-2012), an observational study and field experiment were used to test the effects of predation and predator removal on sage-grouse survival, nest success, and spatial ecology in Bighorn Basin, Wyoming. In year one, I quantified the impacts of predators on sage-grouse demographics and developed a basis for monitoring sage-grouse and predator populations. In year two, predator removal was modified to remove the primary nest and hen predator in this system: coyote (Canis latrans). I evaluated the impact of anthropogenic features and management on sage-grouse home range size, seasonal movement, and habitat selection for potential behavioral responses. Resource selection functions (RSFs) were used to determine habitat selection and identify differences at multiple spatial extents (seasonal and annual scales). Hen survival was improved in sites treated with coyote removal over the nesting period (P = 0.05) but no improvement was seen in annual hen survival (P = 0.19). Observed nest success was higher at the site without coyote removal (P < 0.0001). RSF modeling showed sage-grouse to be sensitive to predator removal, avoiding areas close to roads, with high well density, and steep slopes. While this study suggests predator removal does not benefit observed nest success, provides only short-term enhancement to survival, and may disrupt habitat selection, potentially benefits to other life stages could exist and be detected with more time and monitoring. By taking an experimental approach to examining the effects of predation and predator removal, this study advances our knowledge of sage-grouse ecology by identifying changes in demographic vital rates and habitat selection, propagating the best management possible for sage-grouse populations.
APA, Harvard, Vancouver, ISO, and other styles
9

Flack, M. Brandon. "Ecology of Greater Sage-Grouse Inhabiting the Southern Portion of the Rich-Morgan-Summit Sage-Grouse Management Area." DigitalCommons@USU, 2017. https://digitalcommons.usu.edu/etd/6899.

Full text
Abstract:
Greater sage-grouse (Centrocercus urophasianus; sage-grouse) are sagebrush obligates and are therefore considered to be key indicators of sagebrush ecosystem health. Sage-grouse populations have declined range-wide over the last century due to loss and fragmentation of sagebrush (Artemisia spp.) habitats. Sage-grouse populations found in large intact sagebrush landscapes are considered to be more resilient, however, some small isolated populations persist and thrive in fragmented landscapes. Because of Utah’s unique topography and geography, sage-grouse habitat is discontinuous and populations are naturally dispersed throughout the state in suitable intact blocks or in disconnected islands of sagebrush habitat. Thus, Utah populations provide the ideal place to understand how landscape attributes may influence at risk populations. Of these, the Morgan-Summit population is important because very little was known about the general ecology of this population and it experiences a high level of anthropogenic disturbances. I examined seasonal movement patterns, habitat selection, vital rates (nest initiation rates, nest success, clutch size, breeding success, brood success, and survival probability of breeding age birds) and the influence of vegetation components on vital rates of a small geographically isolated sage-grouse population in Morgan and Summit Counties in northern Utah from 2015–2016. To collect the data, I deployed 25 very-high frequency radio collars and 10 platform terminal transmitters and completed micro-site vegetation surveys at nest, brood, and paired random sites and then made comparisons. Nest sites exhibited variation in vegetation structure that influenced nest success, while brood sites did not. This population is one of the most productive in Utah exhibiting high nest initiation rates, hatching rates, and brood success rates despite limited habitat space and small seasonal movements. Transmitter type had no influence on vital rates, which is contrary to other studies, and limited influence on habitat selection. Sage-grouse avoided trees and developed areas, especially during the breeding season. Selection of other landscape variables was season-dependent. This information suggests that a sage-grouse population can occupy areas of limited habitat on an annual basis if seasonal habitat requirements are met. This study provides information that stake holders can utilize to conserve critical seasonal habitats within this study area where the population could be negatively affected by anthropogenic development pressure.
APA, Harvard, Vancouver, ISO, and other styles
10

Smith, Leah Suzanne. "Greater Sage-Grouse and Energy Development in Northeastern Utah: Implications for Management." DigitalCommons@USU, 2009. https://digitalcommons.usu.edu/etd/471.

Full text
Abstract:
Concern regarding the effect of energy development on greater sage-grouse (Centrocercus urophasianus) is increasing as the search for fossil fuel intensifies. Sage-grouse may be especially sensitive to energy development because they require large, diverse areas of sagebrush (Artemisia spp.) habitat to complete their life cycle. Additionally, the network of pipelines, roads, and wells required by energy development may fragment sagebrush habitat isolating populations and contributing to genetic drift, inbreeding, local extinction, or rapid divergence. Seep Ridge, located in northeastern Utah, is one area where sage-grouse habitat and energy development plans overlap. Approved leases call for the construction of an additional 4,000 natural gas wells in an area currently occupied by a small sage-grouse population. This research was completed to 1) collect baseline data on the survival, reproductive success and habitat use of the Seep Ridge sage-grouse population, 2) examine sage-grouse habitat use patterns in relation to development, and 3) describe sage-grouse mitochondrial genetic diversity in 3 northeastern Utah populations relative to other parts of the species range. I captured and monitored 16 sage-grouse from the Seep Ridge population in 2007 and 2008. Adult mortality rate of the Seep Ridge population was high (65.2%) and recruitment was low (7.1%) compared to other sage-grouse populations in Utah. Additionally, the monitored sage-grouse used habitats located farther from wells more frequently than habitat located near wells, relative to well spacing. Current habitats occupied by this population do not meet recommended guidelines. No unusual haplotype compositions were observed in the genetic survey of the northeastern Utah sage-grouse populations. However, differences in haplotype composition between the Anthro Mountain and Strawberry Valley populations and other northeastern grouse populations indicate there may be a barrier to gene flow in the area. I also documented that the Seep Ridge population is connected to another population inhabiting Ute Tribal land. This observation suggests that the populations inhabiting Ute Tribal land may constitute a source population to recolonize Seep Ridge during the post-energy development periods. I recommend that mitigation measures incorporate restricting development in breeding habitat, maintaining connections between populations, and actions to reduce adult mortality on the summer range. I also recommend that biologists continue collecting genetic samples from northeastern Utah sage-grouse populations to understand population structure, divergent evolution, and inform decisions concerning translocation
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Centrocercus urophasianus"

1

Manier, D. J. Summary of science, activities, programs, and policies that influence the rangewide conservation of greater sage-grouse (Centrocercus urophasianus). Reston, Va: U.S. Dept. of the Interior, U.S. Geological Survey, 2013.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Alberta. Beneficial Grazing Management Practices for Sage Grouse (Centrocercus Urophasianus) and Ecology of Silver Sagebrush (Artemisia Cana Prush Subsp. Cana). Alberta Public Affairs Bureau, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Alberta. Beneficial Grazing Management Practices for Sage Grouse (Centrocercus Urophasianus) and Ecology of Silver Sagebrush (Artemisia Cana Prush Subsp. Cana). Alberta Public Affairs Bureau, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Centrocercus urophasianus' for particular source types:
Journal articles Dissertations / Theses
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography