Eric Thacker
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View article: PSIX-26 Effectiveness of mineral supplementation during range grazing on mineral status in ewes
PSIX-26 Effectiveness of mineral supplementation during range grazing on mineral status in ewes Open
Mineral supplementation in the intermountain west region of the US may be necessary for maintenance of healthy flocks since important trace minerals are deficient in this region. However, rough terrain can make mineral supplementation chal…
View article: 207 Efficacy of sheep and goats during intensive grazing for the control of field bindweed (<i>Convolvulus arvensis</i>)
207 Efficacy of sheep and goats during intensive grazing for the control of field bindweed (<i>Convolvulus arvensis</i>) Open
Sheep and goats prefer forbs and browse, respectively, which make them ideal for targeted grazing of weeds. However, this grazing may negatively affect sheep and goat performance. The objectives of the study were to monitor the effects of …
View article: Principles for successful livestock grazing management on western US rangelands
Principles for successful livestock grazing management on western US rangelands Open
In recent decades rangeland science has moved from a "command and control" framework to one that values heterogeneity, recognizes rangelands as social-ecological systems, and seeks to integrate complexity. This new framework recognizes man…
View article: PSIV-12 Monitoring Ewe Forage Selectivity and Consumption of Tall Larkspur (<i>Delphinium</i> Spp.) in Southern Utah Via Visual Observation and Fecal Metabarcoding
PSIV-12 Monitoring Ewe Forage Selectivity and Consumption of Tall Larkspur (<i>Delphinium</i> Spp.) in Southern Utah Via Visual Observation and Fecal Metabarcoding Open
In Southern Utah, sheep are utilized to a greater extent to graze rangeland due to the presence of Tall Larkspur (Delphinium spp.), which is known to be toxic to cattle. The objectives of this study are to quantify to what degree sheep con…
View article: 376 Effects of Mineral Supplementation During Range Grazing on Ovine Performance
376 Effects of Mineral Supplementation During Range Grazing on Ovine Performance Open
Western US sheep production systems are dependent on rangeland forages to meet nutritional needs for animal production. While many native rangeland soils and forages are deficient in minerals like Cu, Se, and Zn, it is unknown whether ewes…
View article: Enhancing local governance through community‐based conservation: lessons learned from a Utah local working group
Enhancing local governance through community‐based conservation: lessons learned from a Utah local working group Open
Because home ranges for many sensitive wildlife species often transcend jurisdictions, species conservation requires collaborative efforts to engage multiple stakeholders. The West Box Elder County Coordinated Resource Management (CRM) in …
View article: Fire simulation results using fuels characteristics of four sites in the southern Great Plains: Pyric herbivory study
Fire simulation results using fuels characteristics of four sites in the southern Great Plains: Pyric herbivory study Open
This data publication includes fuels characteristics used to create dynamic fuel models and the resulting fire simulation outputs from the BehavePlus program from four sites across the southern Great Plains (Oklahoma and Texas). This large…
View article: Invertebrate richness and biomass of four sites in the southern Great Plains: Pyric herbivory study
Invertebrate richness and biomass of four sites in the southern Great Plains: Pyric herbivory study Open
This data publication includes the number of orders and biomass of sampled aboveground invertebrates from four sites within the southern Great Plains (Oklahoma and Texas). This large-scale experiment was established to compare prescribed f…
View article: Vegetation and fuels characteristics of four sites in the southern Great Plains: Pyric herbivory study
Vegetation and fuels characteristics of four sites in the southern Great Plains: Pyric herbivory study Open
This data publication includes vegetation community composition, structure, and fuels characteristics collected from four sites across the southern Great Plains (Oklahoma and Texas). This large-scale experiment was established to compare p…
View article: A Perspective on Rangeland and Wildlife Disciplines: Similarities Over Differences
A Perspective on Rangeland and Wildlife Disciplines: Similarities Over Differences Open
The disciplines of rangeland and wildlife management were born out of necessity to protect dwindling resources during the early twentieth century. The development of the fields followed parallel paths to meet the needs and desires of socie…
View article: Rangeland Ecoregions of Western North America
Rangeland Ecoregions of Western North America Open
The grasslands, deserts, shrublands, savannas, woodlands, open forests, and alpine tundra of western North America where livestock grazed were collectively referred to as ‘range’ in the nineteenth century. Today these ecosystems are often …
View article: Role and Management of Fire in Rangelands
Role and Management of Fire in Rangelands Open
Fire is a fundamental ecological process in rangeland ecosystems. Fire drives patterns in both abiotic and biotic ecosystem functions that maintain healthy rangelands, making it an essential tool for both rangeland and wildlife management.…
View article: 50 Using GPS and Genomic Technology to Provide a More Accurate Estimate of Bull Power in Western Intermountain Beef Systems
50 Using GPS and Genomic Technology to Provide a More Accurate Estimate of Bull Power in Western Intermountain Beef Systems Open
The objective of this study was to utilize GPS technology and genomic parentage testing to provide a more accurate measurement of bull power in the intermountain west beef production system. Breeding seasons are typically conducted on larg…
View article: Greater Sage-Grouse Seasonal Ecology and Responses to Habitat Manipulations in Northern, Utah
Greater Sage-Grouse Seasonal Ecology and Responses to Habitat Manipulations in Northern, Utah Open
Declining greater sage-grouse populations (Centrocercus urophasianus; hereafter sage-grouse) have led to increased concern regarding the long-term stability of the species. Previous research has identified factors contributing to the obser…
View article: Considering Spatiotemporal Forage Variability in Rangeland Inventory and Monitoring
Considering Spatiotemporal Forage Variability in Rangeland Inventory and Monitoring Open
Rangelands provide numerous ecosystem services, including forage for livestock grazing. Effective grazing management requires measuring forage availability, which influences the level of grazing that can be sustained while maintaining heal…
View article: Evaluating Alternative Feed Sources During Drought
Evaluating Alternative Feed Sources During Drought Open
During years of drought, it is important to critically evaluate alternative feed sources available for cattle. The traditional method for sustaining a herd through a drought is feeding extra stored forage to compensate for decreased forage…
View article: PSVII-22 Using GPS and genomic technologies to provide a more accurate estimate of bull power in western intermountain beef systems
PSVII-22 Using GPS and genomic technologies to provide a more accurate estimate of bull power in western intermountain beef systems Open
The objective of this study was to utilize GPS technology and genomic parentage testing to provide a more accurate measurement of bull power in Intermountain West beef production systems. Breeding seasons in the Intermountain West are typi…
View article: Using satellite‐derived estimates of plant phenological rhythms to predict sage‐grouse nesting chronology
Using satellite‐derived estimates of plant phenological rhythms to predict sage‐grouse nesting chronology Open
The “green wave” hypothesis posits that during spring consumers track spatial gradients in emergent vegetation and associated foraging opportunities. This idea has largely been invoked to explain animal migration patterns, yet the general …
View article: Effects of pyric herbivory on prairie-chicken (Tympanuchus spp) habitat
Effects of pyric herbivory on prairie-chicken (Tympanuchus spp) habitat Open
The reduction and simplification of grasslands has led to the decline of numerous species of grassland fauna, particularly grassland-obligate birds. Prairie-chickens (Tympanuchus spp.) are an example of obligate grassland birds that have d…
View article: Herbicide Control of Broom Snakeweed (Gutierrezia sarothrae)
Herbicide Control of Broom Snakeweed (Gutierrezia sarothrae) Open
Broom snakeweed (Gutierrezia sarothrae [Pursh] Britton & Rusby) is a native invasive species that is widely distributed across western North America. It is very competitive with other vegetation and can reduce or displace desirable grasses…
View article: Utah's Own Habitat Guidelines for Sage-Grouse
Utah's Own Habitat Guidelines for Sage-Grouse Open
Those living and working within western North America’s sagebrush landscapes have most likely been exposed to sage-grouse issues for many years now and may have felt anxiety concerning the potential impacts that could result from implement…
View article: Understanding Free-Roaming Horse Conflicts with Wildlife in the Great Basin
Understanding Free-Roaming Horse Conflicts with Wildlife in the Great Basin Open
Horses and burros were introduced to North America in the 1600s with European missionaries and explorers. Over time, abandoned and released horses and burros formed herds and by the time European-American settlers began to explore North Am…
View article: Shrub Management Handbook for Utah Rangelands
Shrub Management Handbook for Utah Rangelands Open
This handbook is a guide to developing realistic project plans and implementing appropriate management strategies by enhancing your understanding of basic shrub biology, ecological concepts,and management principles.
View article: Issue Information
Issue Information Open
found this invasive annual becomes dominant in communities of native perennial bunchgrasses due to its ability to accumulate dead biomass, change the fi re regime, and suppress the reproduction of native species.The invasion of B. tectorum…
View article: Potential for post‐fire recovery of Greater Sage‐grouse habitat
Potential for post‐fire recovery of Greater Sage‐grouse habitat Open
In the western United States, fire has become a significant concern in the management of big sagebrush ( Artemisia tridentata Nutt.) ecosystems. This is due to large‐scale increases in cover of the fire‐prone invasive annual cheatgrass ( B…
View article: Body Condition Scoring for Horses
Body Condition Scoring for Horses Open
Horse enthusiasts are often concerned about their horse’s health, appearance and performance. A major key to accomplishing these three goals is to keep your horse at a desirable body condition, or degree of fat cover. However, being able t…
View article: Beavers: it's about DAM time!
Beavers: it's about DAM time! Open
This fact sheet discusses how beaver reintroduction or artificial beaver dams can provide an essential service to riparian areas that not only help improve natural habitats but benefit all livestock.