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Articles 1 - 30 of 321
Full-Text Articles in Life Sciences
Sagestep News, Winter 2009, No. 8, Sagestep
Sagestep News, Winter 2009, No. 8, Sagestep
Newsletters
Seasonal newsletter of SageSTEP.
Can Pastoral Linkages To Livestock Markets Be Sustained In Southern Ethiopia?, D. Layne Coppock, Getachew Gebru, Solomon Desta, Seyoum Tezera, Zewdu Edea
Can Pastoral Linkages To Livestock Markets Be Sustained In Southern Ethiopia?, D. Layne Coppock, Getachew Gebru, Solomon Desta, Seyoum Tezera, Zewdu Edea
Environment and Society Faculty Publications
The PARIMA project has facilitated collective action, empowerment of women, and increased involvement in livestock marketing among pastoralists on the Borana Plateau since 2001. Fifty-nine collective-action groups formed by PARIMA and her partners have been recently merged into market-oriented cooperatives, consistent with government policy. We used focus groups and participatory appraisals to assess the extent that market linkages have been sustained since previously reported in 2006. The markets have been growing, but are volatile. Members report they need access to early warning and livestock market-information systems, as well as more capital, to promote trade. Export firms have imposed added conditions …
Chopping And Storing Quality Corn Silage, Clark Israelsen, James Barnhill, Linden Greenhalgh, Michael Pace, Jody Gale
Chopping And Storing Quality Corn Silage, Clark Israelsen, James Barnhill, Linden Greenhalgh, Michael Pace, Jody Gale
All Current Publications
This publication explains proper harvesting and storage of corn silage as a quality forage.
Bed Bugs: For Pest Control Operators, Ryan S. Davis
Bed Bugs: For Pest Control Operators, Ryan S. Davis
All Current Publications
Over the past decade reports of bed bug infestations (Cimicidae: Cimex lectularius) throughout North America and abroad have been on the rise. Accordingly, bed bug submissions to the Utah Plant Pest Diagnostic Lab have also been increasing.
Herbicide, Salinity, And Flooding Tolerance Of Foxtail Barley (Hordeum Jubatum L.) And Desirable Pasture Grasses, Karl R. Israelsen
Herbicide, Salinity, And Flooding Tolerance Of Foxtail Barley (Hordeum Jubatum L.) And Desirable Pasture Grasses, Karl R. Israelsen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Research trials performed in the greenhouse compared the tolerance and response of Hordeum jubatum and desirable pasture grass species to herbicides, salinity, and flooding. Desirable grass species used in this study included: 'Fawn' tall fescue (Festuca arundinaceae), 'Garrison' creeping foxtail (Alopecurus arundinaceus), 'Palaton' reed canarygrass (Phalaris arundinacea), 'Climax' timothy (Phleum pratense), 'Alkar' tall wheatgrass (Thinopyrum ponticum), 'Potomac' orchardgrass (Dactylis glomerata), and 'Mustang' altai wildrye (Leymus angustus). Tolerance to herbicides, salinity, and flooding varied significantly among grass species. Herbicide tolerance was tested using four herbicides at five …
Investigating Methods To Reduce Black Bear (Ursus Americanus) Visitation To Anthropogenic Food Sources: Conditioned Taste Aversion And Food Removal, Kari D. Signor
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Conflicts between humans and black bears (Ursus americanus) jeopardize the safety of both humans and bears, especially when bears become food-conditioned to anthropogenic food sources in areas such as campgrounds. Interest in using non-lethal techniques, such as aversive conditioning, to manage such conflicts is growing. I conducted a captive experiment at The Wildlife Science Center in Minnesota and two field experiments in the La Sal Mountains, Utah, to investigate the effects of taste aversion conditioning using thiabendazole (TBZ) with a novel flavor cue and food removal on black bear food consumption and visitation to human food sources. In …
Costs Of Implementing Collective Action And Capacity Building Among Pastoralists In Southern Ethiopia, D. Layne Coppock, Seyoum Tezera, Solomon Desta
Costs Of Implementing Collective Action And Capacity Building Among Pastoralists In Southern Ethiopia, D. Layne Coppock, Seyoum Tezera, Solomon Desta
Environment and Society Faculty Publications
Since 2000, the PARIMA project has implemented risk-management activities among semi-settled pastoralists in southern Ethiopia. The goal has been to improve human welfare via collective action and capacity building. Outcomes include progress in income generation, asset conservation, and livelihood diversification. Fifty-nine collective-action groups were created. Dominated by women, they included over 2,000 founding members and groups have recently merged to form 37 cooperatives, consistent with government policy. Creating sustainable impacts via collective action and capacity building requires many inputs. Taking raw, illiterate volunteers and transforming them into sustainable groups took up to three years, on average. Costs of implementing this …
Bed Bugs: For Homeowners, Ryan S. Davis, Erin W. Hodgson, Jay B. Karren, Alan H. Roe
Bed Bugs: For Homeowners, Ryan S. Davis, Erin W. Hodgson, Jay B. Karren, Alan H. Roe
All Current Publications
Bed bugs are notorious around the world for their impact on humans and have been recognized as important pests for hundreds of years. Infestations were common before World War II, but heavy insecticide use eliminated most bed bugs in North America for almost 30 years.
Eleven Years Of Parima Activities In North-Central Kenya: Impacts On Egerton University And Neighboring Communities, D. Layne Coppock, Abdillahi Aboud, Mark Mutinda, Stellamaris Muthoka
Eleven Years Of Parima Activities In North-Central Kenya: Impacts On Egerton University And Neighboring Communities, D. Layne Coppock, Abdillahi Aboud, Mark Mutinda, Stellamaris Muthoka
Environment and Society Faculty Publications
The PARIMA project was created to improve the well-being of pastoralists and agro-pastoralists in northern Kenya and southern Ethiopia via risk-management research, training, and outreach. The project began to collaborate with Egerton University’s Department of Natural Resources in 1998 and many joint activities were undertaken over the next 11 years. Among them were regional household research on pastoral risks and their management, a training program for Egerton teaching staff to obtain post-graduate degrees, facilitation of Egerton faculty and staff to attend professional meetings, and provision of computer hardware and software that led to the creation of a GIS teaching and …
Simple Cooling Method Improves The Quality Of Marketed Camel Milk In Northern Kenya, D. Layne Coppock, A. O. Adongo, F. Wayua, I. J. Sagalla, H. K. Walaga, C. Amboga
Simple Cooling Method Improves The Quality Of Marketed Camel Milk In Northern Kenya, D. Layne Coppock, A. O. Adongo, F. Wayua, I. J. Sagalla, H. K. Walaga, C. Amboga
Environment and Society Faculty Publications
Milk marketing is important for many pastoralists to generate income, especially poor households with little else to sell. Milk is accumulated at pastoral settlements and transported to local markets on foot, by pack animals, or in vehicles. Despite challenges of heat and long-distance travel, pastoralists or traders do not attempt to cool marketed milk and possibly reduce risk of spoilage. Milk spoilage is an important problem that limits urban consumer demand. Our research objective was to determine effects of water-soaked hemp (burlap), wrapped around plastic jerry cans, on reducing milk temperature and enhancing quality of marketed camel milk, a key …
Summer Home Range Fidelity In Adult Female Elk (Cervus Elaphus) In Northwestern Colorado, April M. Brough
Summer Home Range Fidelity In Adult Female Elk (Cervus Elaphus) In Northwestern Colorado, April M. Brough
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Understanding the degree of spatial fidelity of individuals within a species increases our ability to manage appropriately. Elk (Cervus elaphus) is a highly managed species in the Intermountain West, but there is little research evaluating summer home range fidelity of individual elk. We evaluated fidelity of 72 adult female elk to individual summer-fall home ranges in the White River study area in northwestern Colorado during two consecutive summers. Based on individual kernel-estimated utilization distributions, we used (1) the Volume of Intersection (VI) statistic and (2) interannual distances between centers of mass to compare summer range overlap and distribution. …
Effects Of Coyote Removal On Pronghorn And Mule Deer Populations In Wyoming, Dylan Earl Brown
Effects Of Coyote Removal On Pronghorn And Mule Deer Populations In Wyoming, Dylan Earl Brown
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
I studied the relationship between coyote (Canis latrans) removal and pronghorn (Antilocapra americana) and mule deer (Odocoileus hemionus) density and fawn:doe ratios in southwest Wyoming and northeast Utah in 2007 and 2008. Coyote removal variables studied included the number of coyotes removed, ground hours worked, total hours worked, coyotes removed/aerial gunning hour, coyotes removed/ground work hour, and coyotes removed/total effort hour. None of the variables explained changes observed in fawn:doe ratios of pronghorn or mule deer. The number of coyotes removed, ground hours worked, total hours worked, and coyotes removed/aerial gunning hour were positively …
Effects Of Starch Addition On Low Fat Rennet Curd Properties And Their Partitioning Between Curd And Whey, Kelly Marie Larsen
Effects Of Starch Addition On Low Fat Rennet Curd Properties And Their Partitioning Between Curd And Whey, Kelly Marie Larsen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This study determined the impact of starches on the properties of low fat rennet curd as measured by microstructural and instrumental analysis. In experiment 1, 17 starches were initially screened for swelling power, impact of curd yield at 5 g/L and 10 g/L in milk, and settling in rennet-induced partially acidified low fat curd.
Starches examined were narrowed down to five in experiment 2; they included: modified waxy corn starch, waxy rice starch, instant tapioca starch, dextrin, and a modified tapioca starch. These starches were added to skim milk to make rennet-induced partially acidified milk gels. Gels were made by …
The Effect Of Irrigation Diversions On The Mountain Whitefish (Prosopium Williamsoni) Population In The Big Lost River, Patrick Allen Kennedy
The Effect Of Irrigation Diversions On The Mountain Whitefish (Prosopium Williamsoni) Population In The Big Lost River, Patrick Allen Kennedy
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Management agencies documented a decline in the mountain whitefish (Prosopium williamsoni) population on the Big Lost River, and unscreened diversions were recognized as a potential factor for this decline. Research suggests the Big Lost River mountain whitefish population is genetically unique, and it has been petitioned for protection under the Endangered Species Act. In 2007, a basin-wide synopsis of diversions was conducted to describe relative entrainment and identify diversions that entrained the most mountain whitefish. This larger scaled synopsis facilitated a more precise assessment of entrainment by a subset of diversions in 2008. In 2008, the volume that …
The Effects Of Social Status And Learning On Captive Coyote (Canis Latrans) Behavior, Lynne Barbara Gilbert-Norton
The Effects Of Social Status And Learning On Captive Coyote (Canis Latrans) Behavior, Lynne Barbara Gilbert-Norton
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Many canids live within hierarchical social systems that could promote differences in learning or in behavior between ranked individuals. Differences in foraging and territorial behavior have been observed between ranked coyotes (Canis latrans), yet effects of learning and social status on coyote behavior are not thoroughly understood. I explored a) coyote response to an artificial scent boundary and whether response differed by status, b) how foraging coyotes tracked temporal resource change, and c) how coyotes find spatially distributed food, and the effect of dominance on foraging behavior. I used male/female pairs of captive coyotes at the National Wildlife Research Center …
Ecological Effects Of Genotypic Diversity On Community And Ecosystem Function, Megan K. Kanaga
Ecological Effects Of Genotypic Diversity On Community And Ecosystem Function, Megan K. Kanaga
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Genotypic diversity within populations can have important evolutionary consequences, but the ecological effects of intraspecific genetic variation on community and ecosystem function have only been studied in a few systems. I present the results of a three-year study designed to address the ecological impacts of genotypic diversity in quaking aspen (Populus tremuloides Michx.), using aspen genotypes planted across genotypic diversity levels (monoculture and mixture) and watering treatment levels (well-watered and water-limited). First, I demonstrated that significant variation exists among genotypes for a wide range of growth, morphological and physiological traits, and quantified high heritability and coefficient of genetic variation …
Disturbance Ecology And Vegetation Dynamics At Varying Spatial And Temporal Scales In Southern Rocky Mountain Engelmann Spruce Forests, R. Justin Derose
Disturbance Ecology And Vegetation Dynamics At Varying Spatial And Temporal Scales In Southern Rocky Mountain Engelmann Spruce Forests, R. Justin Derose
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
High-severity disturbances are the primary drivers of Engelmann spruce-subalpine fir ecosystems in the southern Rocky Mountain. Recently, an unprecedented, landscape-wide (at least 250 km2) spruce beetle outbreak killed virtually all the Engelmann spruce on the Markagunt Plateau in southwestern Utah, USA. Results from dendroecological analyses suggested the combination of antecedent disturbance history and drought-driven stand development was responsible for creating suitable host conditions prior to the recent outbreak. Multiple and consistent lines of evidence suggested mixed- and high-severity fires shaped the development of the Markagunt Plateau. Subsequent stand development, influenced by species-specific differential tree-ring response to drought, resulted in the …
Designing An Instrument Based On Native Fluorescence To Determine Soil Microbial Content At A Mars Analog Site, Heather D. Smith
Designing An Instrument Based On Native Fluorescence To Determine Soil Microbial Content At A Mars Analog Site, Heather D. Smith
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
For this research project we designed an instrument to detect bacteria via biomolecular fluorescence. We introduce the current understanding of astrobiology, our knowledge of life beyond Earth, and the commonality of Earth life as it pertains to the search for life on Mars. We proposed a novel technique for searching for direct evidence of life on the surface of Mars using fluorescence. We use the arid region of the Mojave Desert as an analog of Mars. Results indicate the fluorescence of the biotic component of desert soils is approximately as strong as the fluorescence of the mineral component. Fluorescence laboratory …
Alternative Sampling And Analysis Methods For Digital Soil Mapping In Southwestern Utah, Colby W. Brungard
Alternative Sampling And Analysis Methods For Digital Soil Mapping In Southwestern Utah, Colby W. Brungard
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Digital soil mapping (DSM) relies on quantitative relationships between easily measured environmental covariates and field and laboratory data. We applied innovative sampling and inference techniques to predict the distribution of soil properties, soil attributes, taxonomic classes, and dominant vegetation across a 30,000-ha complex Great Basin landscape in southwestern Utah. This arid rangeland was characterized by rugged topography, diverse vegetation, and intricate geology. Environmental covariates calculated from digital elevation models (DEM) and spectral satellite data were used to represent factors controlling soil development and distribution. We investigated optimal sample size and sampled the environmental covariates using conditioned Latin Hypercube Sampling (cLHS). …
Discovering Metabolic Networks Of Bovine Fertilization, Erin Lynn Young
Discovering Metabolic Networks Of Bovine Fertilization, Erin Lynn Young
Undergraduate Honors Capstone Projects
At the time of fertilization, a dramatic change occurs in the oocyte that transforms this cell from a metaphase arrested state into a metabolically active and dynamic state. The view of the flow of biological processes within organisms has recently shifted from that of a linear path to a more complex network. Biological processes are no longer thought of in the simple terms of DNA to RNA, RNA to proteins, and proteins to final activity. It is now known that many biological processes involve interconnected networks and feedback loops in which DNA, RNA, proteins, and metabolites perform specific roles. We …
Harvesting Corn Silage By Plant Moisture, James Barnhill, Linden Greenhalgh, Clark Israelsen, Michael Pace, Jody Gale
Harvesting Corn Silage By Plant Moisture, James Barnhill, Linden Greenhalgh, Clark Israelsen, Michael Pace, Jody Gale
All Current Publications
This publication discusses the appropriate moisture level for ensiling corn silage as a forage.
Northern Utah Alfalfa Nutrient Survey 2008, J. Barnhill, G. Cardon, M. Pace, C. Israelsen, D. Miner, L. Greenhalgh, S. Banks, M. Shao, D. Rothlisberger, S. Olsen
Northern Utah Alfalfa Nutrient Survey 2008, J. Barnhill, G. Cardon, M. Pace, C. Israelsen, D. Miner, L. Greenhalgh, S. Banks, M. Shao, D. Rothlisberger, S. Olsen
All Current Publications
No abstract provided.
Subcutaneous Administration Of Tc007 Reduces Disease Severity In An Animal Model Of Sma, Virginia B. Mattis, Marina Y. Fosso, Cheng-Wei Tom Chang, Christian L. Lorson
Subcutaneous Administration Of Tc007 Reduces Disease Severity In An Animal Model Of Sma, Virginia B. Mattis, Marina Y. Fosso, Cheng-Wei Tom Chang, Christian L. Lorson
Chemistry and Biochemistry Faculty Publications
Background Spinal Muscular Atrophy (SMA) is the leading genetic cause of infantile death. It is caused by the loss of functional Survival Motor Neuron 1 (SMN1). There is a nearly identical copy gene, SMN2, but it is unable to rescue from disease due to an alternative splicing event that excises a necessary exon (exon 7) from the majority of SMN2-derived transcripts. While SMNΔ7 protein has severely reduced functionality, the exon 7 sequences may not be specifically required for all activities. Therefore, aminoglycoside antibiotics previously shown to suppress stop codon recognition and promote translation read-through have been examined to increase the …
Regional Assessment Of Aspen Change And Spatial Variability On Decadal Time Scales, Temuulen Tsagaan Sankey
Regional Assessment Of Aspen Change And Spatial Variability On Decadal Time Scales, Temuulen Tsagaan Sankey
Aspen Bibliography
Quaking aspen (Populus tremuloides) is commonly believed to be declining throughout western North America. Using a historical vegetation map and Landsat TM5 imagery, this study detects changes in regional aspen cover over two different time periods of 85 and 18 years and examines aspen change patterns with biophysical variables in the Targhee National Forest of eastern Idaho, USA. A subpixel classification approach was successfully used to classify aspen. The results indicate greater spatial variability in regional aspen change patterns than indicated by local-scale studies. The observed spatial variability appears to be an inherent pattern in regional aspen dynamics, …
Fall-Bearing Raspberries In High Tunnels, Dan Drost, Brent Black, Daniel Rowley
Fall-Bearing Raspberries In High Tunnels, Dan Drost, Brent Black, Daniel Rowley
All Current Publications
This publication provides information on growing high tunnel fall-bearing raspberries including site preparation, site and irrigation management, and planting dates and spacing.
Las Frambuesas De Otoño En Los Túneles Altos, Daniel Rowley, Brent Black, Trevin Cardon
Las Frambuesas De Otoño En Los Túneles Altos, Daniel Rowley, Brent Black, Trevin Cardon
All Current Publications
Se ha demostrado que los túneles altos son una manera eficaz para extender la temporada de crecimiento de la frambuesa en Utah y otras áreas de los Estados Unidos. Dependiendo del clima, los rendimientos de las frambuesas de otoño cultivados al aire libre pueden ser reducidos significativamente por la primera helada del otoño. Los túneles altos son una de las maneras de protección de la helada, y cuando se los usan junto con otras maneras de protección de la helada se puede extender significativamente la temporada de crecimiento. Investigadores en Nueva York han extendido eficazmente la temporada de crecimiento hasta …
Little Bluestem In The Landscape, Heidi Kratsch, Graham Hunter
Little Bluestem In The Landscape, Heidi Kratsch, Graham Hunter
CWEL Extension Fact Sheets
No abstract provided.
Aspen In Scotland: Biodiversity And Management, John Parrott, Neil Mackenzie
Aspen In Scotland: Biodiversity And Management, John Parrott, Neil Mackenzie
Aspen Bibliography
No abstract provided.
Fall Planting, Larry A. Sagers
Level 1an - Holes And Ridges Knitted Dishcloth - 103, Debra Proctor
Level 1an - Holes And Ridges Knitted Dishcloth - 103, Debra Proctor
All Current Publications
Cotton yarn is a good yarn to use for a dishcloth. It is absorbent, stronger wet than dry, machine washable and can be bleached if needed. These dishcloths are easy and fun to make. Make several and give them as gifts.