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Utah State University

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2013

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Articles 31 - 60 of 179

Full-Text Articles in Life Sciences

Google Search: Operators, Paul Hill, Nicole Jensen, Nick Read, Stacey Macarthur Sep 2013

Google Search: Operators, Paul Hill, Nicole Jensen, Nick Read, Stacey Macarthur

All Current Publications

Knowing how to utilize Google Search is powerful. Search skills are an essential 21st century skill that will serve you in finding, organizing, and leveraging information faster and more reliably, thereby increasing productivity and improving your quality of life online.

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Google Search: Basics, Paul Hill, Nicole Jensen, Nick Read, Stacey Macarthur Sep 2013

Google Search: Basics, Paul Hill, Nicole Jensen, Nick Read, Stacey Macarthur

All Current Publications

Knowing how to utilize Google Search is powerful. Search skills are an essential 21st century skill that will serve you in finding, organizing, and leveraging information faster and more reliably, thereby increasing productivity and improving your quality of life online.

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The Benefits Of Tannin-Containing Forages, Jennifer W. Macadam, Joe Brummer, Anowarul Islam, Glenn Shewmaker Sep 2013

The Benefits Of Tannin-Containing Forages, Jennifer W. Macadam, Joe Brummer, Anowarul Islam, Glenn Shewmaker

All Current Publications

This fact sheet describes tannins, a group of chemical compounds produced by a number of broadleaf forage plants, that can bind proteins.

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Horse Marketing: Answers And Options, Jim Keyes Sep 2013

Horse Marketing: Answers And Options, Jim Keyes

All Current Publications

As marketing a horse in today's world can be difficult, information on marketing options in provided, including preparing a horse for sale and realistic horse values.

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What Makes A Good Bull?, James Keyes Sep 2013

What Makes A Good Bull?, James Keyes

All Current Publications

This fact sheet describes the importance of a good sire and how to select one.

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Can Cows Eat Snow?, Jim Keyes Sep 2013

Can Cows Eat Snow?, Jim Keyes

All Current Publications

This fact sheet describes situations where cattle can survive on snow without having any other watagriculer supply.

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Pest Monitoring Calendar – Cherry, Usu Extension Sep 2013

Pest Monitoring Calendar – Cherry, Usu Extension

All Current Publications

Cherry Pest Monitoring Calendar

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Pest Monitoring Calendar – Apple, Usu Extension Sep 2013

Pest Monitoring Calendar – Apple, Usu Extension

All Current Publications

Apple Pest Monitoring Calendar

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Pest Monitoring Calendar – Apricot, Usu Extension Sep 2013

Pest Monitoring Calendar – Apricot, Usu Extension

All Current Publications

Apricot Pest Monitoring Calendar

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Pest Monitoring Calendar – Plum, Usu Extension Sep 2013

Pest Monitoring Calendar – Plum, Usu Extension

All Current Publications

Plum Pest Monitoring Calendar

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Pest Monitoring Calendar – Peach And Nectarine, Usu Extension Sep 2013

Pest Monitoring Calendar – Peach And Nectarine, Usu Extension

All Current Publications

Peach and Nectarine Pest Monitoring Calendar

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Pest Monitoring Calendar – Pear, Usu Extension Sep 2013

Pest Monitoring Calendar – Pear, Usu Extension

All Current Publications

Pear Pest Monitoring Calendar

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Google Search: Techniques, Paul Hill, Nicole Jensen, Nick Read, Stacey Macarthur Sep 2013

Google Search: Techniques, Paul Hill, Nicole Jensen, Nick Read, Stacey Macarthur

All Current Publications

Knowing how to utilize Google Search is powerful. Search skills are an essential 21st century skill that will serve you in finding, organizing, and leveraging information faster and more reliably, thereby increasing productivity and improving your quality of life online.

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A River Continuum Analysis Of An Anthropogenically-Impacted System: The Little Bear River, Utah, Wayne A. Wurtsbaugh, Nicholas A. Heredia, Patsy Palacios, Jared Baker, Chance Broderius, Katie Fisher, Jason Fuller, G. Andrew Pappas, Christian Smith, Marc Weston Aug 2013

A River Continuum Analysis Of An Anthropogenically-Impacted System: The Little Bear River, Utah, Wayne A. Wurtsbaugh, Nicholas A. Heredia, Patsy Palacios, Jared Baker, Chance Broderius, Katie Fisher, Jason Fuller, G. Andrew Pappas, Christian Smith, Marc Weston

Watershed Sciences Faculty Publications

In September 2012 the Aquatic Ecology Practicum class from Utah State University studied the 51km river continuum of the Little Bear River located in northern Utah (Figure 1). The relatively pristine headwaters of the river begin in the Wasatch Mountain Range at an altitude of 1800 m. The river flows northward into Cache Valley where it terminates in Cutler Reservoir (1345 m elevation). Agricultural development and urbanization have modified the natural terrain and chemical characteristics of the river, and Hyrum Reservoir, located midway along the gradient causes a discontinuity in river processes. The results from analyses of stream condition indicators …

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Invasive Plants In U. S. National Wildlife Refuges: A Coordinated Research Project Using Undergraduate Ecology Students, Martha F. Hoopes, David M. Marsh, Karen H. Beard, Nisse Goldberg, Alberto Aparicio, Annie Arbuthnot, Benjamin Hixon, Danelle Laflower, Lucas Lee, Amanda Little, Emily Mooney, April Pallette, Alison Ravenscraft, Stephen Scheele, Kyle Stowe, Colin Sykes, Robert Watson, Blia Yang Aug 2013

Invasive Plants In U. S. National Wildlife Refuges: A Coordinated Research Project Using Undergraduate Ecology Students, Martha F. Hoopes, David M. Marsh, Karen H. Beard, Nisse Goldberg, Alberto Aparicio, Annie Arbuthnot, Benjamin Hixon, Danelle Laflower, Lucas Lee, Amanda Little, Emily Mooney, April Pallette, Alison Ravenscraft, Stephen Scheele, Kyle Stowe, Colin Sykes, Robert Watson, Blia Yang

Wildland Resources Faculty Publications

Answering large-scale questions in ecology can involve time-consuming data compilation. We show how networks of undergraduate classes can make these projects more manageable and provide an authentic research experience for students. With this approach, we examined the factors associated with plant species richness in US national wildlife refuges. We found that the richness of harmful invasive plants and the richness of native plants were positively correlated in mainland refuges but negatively correlated in island refuges. Nonnative richness and invasive richness were also positively correlated with colonization pressure as indicated by nonnative richness around each refuge. Associations between refuge characteristics and …

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Avispas “Chaqueta Amarilla,” Avispones Y Avispas De Papel, Erin Hodgson, Alan Roe, Nicole Peña, Ricardo Ramirez Aug 2013

Avispas “Chaqueta Amarilla,” Avispones Y Avispas De Papel, Erin Hodgson, Alan Roe, Nicole Peña, Ricardo Ramirez

All Current Publications

Las avispas “chaqueta amarilla” o vespula (“yellowjackets”), avispones (“hornets”) y avispas de papel (“paper wasps”) son avispas sociales estrechamente relacionadas que son comúnmente encontradas en Utah.

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La Arana Hobo, Nicole Peña, Alan Roe, Erin W. Hodgson Aug 2013

La Arana Hobo, Nicole Peña, Alan Roe, Erin W. Hodgson

All Current Publications

La araña hobo, Tegenaria agrestis, es miembro de la familia de “funnel-web spider”/ “araña de tela de embudo” Agelenidae. Las arañas ‘de tela de embudo’/‘funnel-web’ tienen las patas largas (Fig. 1), corren rápidamente y construyen lugares para retirarse en forma de embudos o tubos.

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Spotted Wing Drosophila (Espanol), Diane Alston, Ryan Davis, Cory Vorel Aug 2013

Spotted Wing Drosophila (Espanol), Diane Alston, Ryan Davis, Cory Vorel

All Current Publications

Spotted Wing Drosophila (SWD) is a new Utah pest (first found August, 2010) that can infest un-ripened (pre-harvest), ripe, over-ripe, and spoiled fruits.

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Squash Bug (Espanol), Diane Alston, James Barnhill Aug 2013

Squash Bug (Espanol), Diane Alston, James Barnhill

All Current Publications

Squash bug (Anasa tristis) is a “true bug” with piercingsucking mouthparts (Order Hemiptera) in the leaffooted bug family (Coreidae). It is common throughout the U.S. and found from Canada to Central America. Adults (Fig. 1) emit a foul odor when disturbed and may be called “stink bugs”; however, true stink bugs are in a different true bug family.

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Ultrasound As A Tool To Assess Body Fat, Dale R. Wagner Jul 2013

Ultrasound As A Tool To Assess Body Fat, Dale R. Wagner

Kinesiology and Health Science Faculty Publications

Ultrasound has been used effectively to assess body fat for nearly 5 decades, yet this method is not known as well as many other body composition techniques. The purpose of this review is to explain the technical principles of the ultrasound method, explain the procedures for taking a measurement and interpreting the results, evaluate the reliability and validity of this method for measuring subcutaneous and visceral adipose tissue, highlight the advantages and limitations of ultrasound relative to other body composition methods, consider its utility to clinical populations, and introduce new body composition-specific ultrasound technology. The focus of this review is …

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White-Tailed Deer (Odocoileus Virginianus) Positively Affect The Growth Of Mature Northern Red Oak (Quercus Rubra) Trees., R W. Lucas, R Salguero-Gomez, D B. Cobb, Bonnie G. Waring, F Anderson, W J. Mcshea, B B. Casper Jul 2013

White-Tailed Deer (Odocoileus Virginianus) Positively Affect The Growth Of Mature Northern Red Oak (Quercus Rubra) Trees., R W. Lucas, R Salguero-Gomez, D B. Cobb, Bonnie G. Waring, F Anderson, W J. Mcshea, B B. Casper

Biology Faculty Publications

Understanding and predicting the effects of deer (Cervidae) on forest ecosystems present significant challenges in ecosystem ecology. Deer herbivory can cause large changes in the biomass and species composition of forest understory plant communities, including early life-cycle trees (i.e., seedlings and saplings). Such changes can impact juvenile to adult transitions and the future age structure and species composition of mature forests. Changes to understory vegetation also impact flow of energy and nutrients in forest ecosystems. Studies examining the influence of deer on mature trees, however, are rare and rely on extrapolating effects from early life cycle stages of trees. We …

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Elk (Cervus Elaphus) Seasonal Habitat Selection In A Heterogeneous Forest Structure, Jesse N. Popp, David N.C. Mcgeachy, Josef Hamr Jul 2013

Elk (Cervus Elaphus) Seasonal Habitat Selection In A Heterogeneous Forest Structure, Jesse N. Popp, David N.C. Mcgeachy, Josef Hamr

Aspen Bibliography

Seasonal habitat selection by the reintroduced Burwash elk population, approximately 30 km south of Sudbury, Ontario, has been analysed in order to assist in the development of future management. Twenty-five adult females were radio-collared and tracked 1–3 times a week for 3 years. The most prominent patterns included selection of intolerant hardwood forests (trembling aspen, white birch, and balsam poplar) during all seasons, while Great Lakes-St. Lawrence pines (white and red pine dominated stands) were used less than expected based on availability for all seasons. The selection patterns are likely associated with seasonal climatic conditions and forage preferences. Because the …

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The Distribution Of Fruit And Seed Toxicity During Development For Eleven Neotropical Trees And Vines, Noelle G. Beckman Jul 2013

The Distribution Of Fruit And Seed Toxicity During Development For Eleven Neotropical Trees And Vines, Noelle G. Beckman

Biology Faculty Publications

Secondary compounds in fruit mediate interactions with natural enemies and seed dispersers, influencing plant survival and species distributions. The functions of secondary metabolites in plant defenses have been well-studied in green tissues, but not in reproductive structures of plants. In this study, the distribution of toxicity within plants was quantified and its influence on seed survival was determined in Central Panama. To investigate patterns of allocation to chemical defenses and shifts in allocation with fruit development, I quantified variation in toxicity between immature and mature fruit and between the seed and pericarp for eleven species. Toxicity of seed and pericarp …

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Climate Change And Plant Demography In The Sagebrush Steppe, Aldo Compagnoni Jul 2013

Climate Change And Plant Demography In The Sagebrush Steppe, Aldo Compagnoni

Green Canyon Environmental Research Area, Logan Utah

No abstract provided.

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Supplemental Greenhouse Lighting: Return On Investment For Led And Hps Fixtures, Jacob A. Nelson, Bruce Bugbee Jul 2013

Supplemental Greenhouse Lighting: Return On Investment For Led And Hps Fixtures, Jacob A. Nelson, Bruce Bugbee

Controlled Environments

LED fixtures are being marketed as a replacement for high pressure sodium fixtures in greenhouse lighting. Here we compare the cost per photon for LED and HPS fixtures based on their ability to convert electrical energy into photons delivered to a horizontal surface below the fixture. Some LED fixtures now exceed the efficiency of the best HPS fixtures by 23%, but the initial capital cost per photon delivered is 5 to 10 times greater. HPS fixtures with electronic ballasts and optimized luminaires (reflectors) are 27% more efficient than widely-used HPS fixtures with magnetic ballasts. Our analysis, however, demonstrates that light …

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Effect Of Lactose Monolaurate And High Intensity Ultrasound On Crystallization Behavior Of Anydrous Milk Fat, Ashwini Wagh, M. K. Walsh, Silvana Martini Jul 2013

Effect Of Lactose Monolaurate And High Intensity Ultrasound On Crystallization Behavior Of Anydrous Milk Fat, Ashwini Wagh, M. K. Walsh, Silvana Martini

Nutrition, Dietetics, and Food Sciences Faculty Publications

Crystallization behavior of anhydrous milk fat (AMF) was studied with the addition of 0.025 and 0.05 % lactose monolaurate (LML). The crystallization behavior was studied at low (ΔT = 3 °C) and high supercooling (ΔT = 6 °C). Polarized light microscopy and laser turbidimetry indicated a delay in crystallization on addition of 0.025 % and 0.05 % LML or Tween 20 to AMF. High intensity ultrasound (HIU) was applied to AMF samples with 0.05 % LML and lower supercooling (T c = 31 °C; ΔT = 3 °C). HIU application in AMF and AMF + 0.05 % LML induced crystallization …

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Older Adolescents’ Self-Determined Motivations To Disclose Their Hiv Status, Ann Gillard, Mark F. Roark Jul 2013

Older Adolescents’ Self-Determined Motivations To Disclose Their Hiv Status, Ann Gillard, Mark F. Roark

Kinesiology and Health Science Faculty Publications

Disclosure of HIV status is an important topic for youth living with HIV/AIDS, yet theoretical frameworks for understanding HIV disclosure motivations have been poorly applied. Self-determination theory (SDT) proposes that people are at optimal functioning when they are engaging in activities that are interesting and enlivening. This study utilized SDT to understand young adults’ motivations to disclose their HIV status. Interviews and observations were conducted with nine youth aged 17–19 and two adult staff. Results indicate that SDT is useful for understanding types of motivation (i.e., amotivation, controlled, and autonomous motivation) to disclose. Amotivation was the most common type of …

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Practical Reproduction Strategies For Utah Beef Ranches, Kevin Heaton, Trent Wilde, Mark Nelson, Dale Zobell Jul 2013

Practical Reproduction Strategies For Utah Beef Ranches, Kevin Heaton, Trent Wilde, Mark Nelson, Dale Zobell

All Current Publications

This fact sheet identifies opportunities for beef cattle producers to improve herd reproduction.

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Building A Quality Child Care Business, Susan Haws, Angela Wood Jul 2013

Building A Quality Child Care Business, Susan Haws, Angela Wood

All Current Publications

This guide is a resource to help one through the steps of becoming a certified or licensed child care provider, and includes locations of child care resources and referral centers throughout Utah, contact information, writing a business plan, and obtaining a business license.

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Rodent-Mediated Interactions Among Seed Species Of Differing Quality In A Shrubsteppe Ecosystem, Karen H. Beard, Craig A. Faulhaber, Frank P. Howe, Thomas C. Edwards Jr. Jun 2013

Rodent-Mediated Interactions Among Seed Species Of Differing Quality In A Shrubsteppe Ecosystem, Karen H. Beard, Craig A. Faulhaber, Frank P. Howe, Thomas C. Edwards Jr.

Wildland Resources Faculty Publications

Interactions among seeds, mediated by granivorous rodents, are likely to play a strong role in shrubsteppe ecosystem restoration. Past studies typically consider only pairwise interactions between preferred and less preferred seed species, whereas rangeland seedings are likely to contain more than 2 seed species, potentially leading to complex interactions. We examined how the relative proportion of seeds in a 3-species polyculture changes rodent seed selectivity (i.e., removal) and indirect interactions among seeds. We presented 2 rodent species, Peromyscus maniculatus (deer mice) andPerognathus parvus (pocket mice), in arenas with 3-species seed mixtures that varied in the proportion of a highly preferred, …

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