Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Other

Utah State University

Discipline
Keyword
Publication Year
Publication

Articles 1 - 30 of 64

Full-Text Articles in Life Sciences

Soil Type More Than Precipitation Determines Fine-Root Abundance In Savannas Of Kruger National Park, South Africa, Andrew Kulmatiski, Sydney R.C. Sprouse, Karen H. Beard May 2017

Soil Type More Than Precipitation Determines Fine-Root Abundance In Savannas Of Kruger National Park, South Africa, Andrew Kulmatiski, Sydney R.C. Sprouse, Karen H. Beard

Wildland Resources Faculty Publications

Aims Our aim was to examine how soil type and precipitation affect fine-root abundance in savanna ecosystems across Kruger National Park (KNP), South Africa. Methods Fine-root distributions were measured in four sites that represent the natural factorial combination of soil types (basalt-derived clay or granite-derived sand) and precipitation regimes [wet (~750 mm mean annual precipitation) or dry (~500 mm mean annual precipitation)] that occur in KNP. Root area and biomass (at soil depths of 0–75 cm) were estimated from measurements of root number, length and width in images from minirhizotron tubes at each site. Measurements were made during one ...


Online Information-Seeking Behaviors Of Parents Of Children With Adhd, Adam Sage, Delesha Carpenter, Robyn Sayner, Kathleen Thomas, Larry Mann, Sandra H. Sulzer, Adrian Sandler, Betsy Sleath Feb 2017

Online Information-Seeking Behaviors Of Parents Of Children With Adhd, Adam Sage, Delesha Carpenter, Robyn Sayner, Kathleen Thomas, Larry Mann, Sandra H. Sulzer, Adrian Sandler, Betsy Sleath

Kinesiology and Health Science Faculty Publications

This article describes (a) parent questions about ADHD (attention deficit/hyperactivity disorder), (b) parent Internet use to seek ADHD information, and (c) associations between type of Internet access and ADHD information-seeking. Seventy parents of children (ages 7-17 years) with ADHD completed questionnaires after their child’s visit with their pediatrician. Bivariate relationships were assessed using chi-square statistics, Pearson correlation coefficients, or t tests. Parents identified an average of 8.9 questions about ADHD for their child’s provider. Common questions were related to medication and long-term implications of ADHD. A majority of parents searched the Internet for general ADHD information ...


Youth Views On Communication About Adhd And Medication Adherence., Betsy Sleath, Delesha Carpenter, Robyn Sayner, Kathleen Thomas, Larry Mann, Adam Sage, Sandra H. Sulzer, Adrian D. Sandler Jan 2017

Youth Views On Communication About Adhd And Medication Adherence., Betsy Sleath, Delesha Carpenter, Robyn Sayner, Kathleen Thomas, Larry Mann, Adam Sage, Sandra H. Sulzer, Adrian D. Sandler

Kinesiology and Health Science Faculty Publications

The purpose of this study was to examine youth perceptions of attention deficit hyperactivity disorder (ADHD) communication with their pediatric providers, their reported adherence to their ADHD medications, and their desired location for an ADHD educational program. Youth ages 7 through 17 with an ADHD diagnosis were recruited. A research associate interviewed the youth. Parents completed demographic questionnaires. Seventy families participated. One-third of the youth wanted more discussion about ADHD with their providers during visits. The average youth had over eight questions about ADHD and its treatment. Most youth wanted to learn about ADHD at their provider’s office. Non-white ...


Weather And Prey Availability Affect The Timing Of Fall Migration Of Eared Grebes (Podiceps Nigricollis) From Great Salt Lake, Maureen G. Frank, Michael R. Conover Jan 2017

Weather And Prey Availability Affect The Timing Of Fall Migration Of Eared Grebes (Podiceps Nigricollis) From Great Salt Lake, Maureen G. Frank, Michael R. Conover

Wildland Resources Faculty Publications

Great Salt Lake (GSL) is a critical migratory stopover location for Eared Grebes (Podiceps nigricollis), but the factors influencing the timing of their fall migration have not previously been investigated. We used archived Doppler radar data to visualize the nocturnal departures of Eared Grebes from GSL over 16 years, from 1999–2015. We used generalized linear models (GLMs) to examine interannual variability in the timing of migration of Eared Grebes in relation to prey availability and lake temperature, as well as variation in the nightly departure likelihoods of Eared Grebes in relation to weather. On average, Eared Grebes departed from ...


Effects Of Road And Land Use On Frog Distributions Across Spatial Scales And Regions In The Eastern And Central United States, David M. Marsh, Bradley J. Cosentino, Kara S. Jones, Joseph J. Apodaca, Karen H. Beard, Jane Margaret Bell, Christine Bozarth, Derrick Carper, Julie F. Charbonnier, Andreia Dantas, Elizabeth A. Forys, Miran Foster, Jaquelyn General, Kristen S. Genet, Macie Hanneken, Kyle R. Hess, Shane A. Hill, Faisal Iqbal, Nancy E. Karraker, Eran S. Kilpatrick, Tom A. Langen, James Langford, Kathryn Lauer, Alison J. Mccarthy, Joseph Neale, Saumya Patel, Austin Patton, Cherie Southwick, Nathaniel Stearrett, Nicholas Steijn, Mohammed Tasleem, Jospeh M. Taylor, James R. Vonesh Nov 2016

Effects Of Road And Land Use On Frog Distributions Across Spatial Scales And Regions In The Eastern And Central United States, David M. Marsh, Bradley J. Cosentino, Kara S. Jones, Joseph J. Apodaca, Karen H. Beard, Jane Margaret Bell, Christine Bozarth, Derrick Carper, Julie F. Charbonnier, Andreia Dantas, Elizabeth A. Forys, Miran Foster, Jaquelyn General, Kristen S. Genet, Macie Hanneken, Kyle R. Hess, Shane A. Hill, Faisal Iqbal, Nancy E. Karraker, Eran S. Kilpatrick, Tom A. Langen, James Langford, Kathryn Lauer, Alison J. Mccarthy, Joseph Neale, Saumya Patel, Austin Patton, Cherie Southwick, Nathaniel Stearrett, Nicholas Steijn, Mohammed Tasleem, Jospeh M. Taylor, James R. Vonesh

Wildland Resources Faculty Publications

Understanding the scales over which land use affects animal populations is critical for conservation planning, and it can provide information about the mechanisms that underlie correlations between species distributions and land use. We used a citizen science database of anuran surveys to examine the relationship between road density, land use and the distribution of frogs and toads across spatial scales and regions of the United States.


Effectiveness Of The Toxicant Drc-1339 In Reducing Populations Of Common Ravens In Wyoming, Luke W. Peebles, Michael R. Conover Jun 2016

Effectiveness Of The Toxicant Drc-1339 In Reducing Populations Of Common Ravens In Wyoming, Luke W. Peebles, Michael R. Conover

Wildland Resources Faculty Publications

Common raven (Corvus corax) populations have increased several-fold in the western United States during the past century; these birds cause problems when they kill new-borne lambs and calves and depredate nests of greater sage-grouse (Centrocercus urophasianus). The toxicant DRC-1339 is used by U.S. Department of Agriculture/Animal and Plant Health Inspection Service Wildlife Services to manage common raven populations and reduce the severity of these problems, but it is difficult to determine how many ravens are killed by an application because carcasses are rarely found. We examined the effectiveness of DRC-1339 applications for preventative control of ravens at 3 ...


Making Sense Of Self Harm, Sandra H. Sulzer May 2016

Making Sense Of Self Harm, Sandra H. Sulzer

Kinesiology and Health Science Faculty Publications

No abstract provided.


Beyond The Urban Stream Syndrome: Organic Matter Budgets For Diagnostics And Restoration Of An Impaired Urban River, Dave M. Epstein, Julia E. Kelso, Michelle A. Baker Apr 2016

Beyond The Urban Stream Syndrome: Organic Matter Budgets For Diagnostics And Restoration Of An Impaired Urban River, Dave M. Epstein, Julia E. Kelso, Michelle A. Baker

Biology Faculty Publications

In response to water quality standard violations linked to excessive organic matter (OM) and a lack of sampling data informing the Total Maximum Daily Load (TMDL), an organic matter budget was created to quantify and identify sources of OM in the lower Jordan River (Salt Lake City, UT). By sampling dissolved, fine, and coarse particulate OM, as well as measuring ecosystem metabolism at seven different sites, the researchers aimed to identify the origin of excess OM, and understand pathways by which different size classes of the OM pool are generated. The dissolved fraction (DOM; 94 %) was found to be the ...


Microhabitat Conditions In Wyoming’S Sage-Grouse Core Areas: Effects On Nest Site Selection And Success, Jonathan B. Dinkins, Kurt T. Smith, Jeffrey L. Beck, Christopher P. Kirol, Aaron C. Pratt, Michael R. Conover Mar 2016

Microhabitat Conditions In Wyoming’S Sage-Grouse Core Areas: Effects On Nest Site Selection And Success, Jonathan B. Dinkins, Kurt T. Smith, Jeffrey L. Beck, Christopher P. Kirol, Aaron C. Pratt, Michael R. Conover

Wildland Resources Faculty Publications

The purpose of our study was to identify microhabitat characteristics of greater sage-grouse (Centrocercus urophasianus) nest site selection and survival to determine the quality of sage-grouse habitat in 5 regions of central and southwest Wyoming associated with Wyoming’s Core Area Policy. Wyoming’s Core Area Policy was enacted in 2008 to reduce human disturbance near the greatest densities of sage-grouse. Our analyses aimed to assess sage-grouse nest selection and success at multiple micro-spatial scales. We obtained microhabitat data from 928 sage-grouse nest locations and 819 random microhabitat locations from 2008–2014. Nest success was estimated from 924 nests with ...


A Systematic Review Of Empathy Development In Medical Education, Sandra H. Sulzer, Claire Wendland, Noah Feinstein Feb 2016

A Systematic Review Of Empathy Development In Medical Education, Sandra H. Sulzer, Claire Wendland, Noah Feinstein

Kinesiology and Health Science Faculty Publications

Context Empathy in doctor–patient relationships is a familiar topic for medical scholars and a crucial goal for medical educators. Nonetheless, there are persistent disagreements in the research literature concerning how best to evaluate empathy among physicians, and whether empathy declines or increases across medical education. Some researchers have argued that the instruments used to study ‘empathy’ may not measure anything meaningful to clinical practice or patient satisfaction. Methods We performed a systematic review to learn how empathy is conceptualised in medical education research. We examined how researchers define the central construct of empathy and what they choose to measure ...


Contrasting Soil Nitrogen Dynamics Across A Montane Meadow And Urban Lawn In A Semi-Arid Watershed, Steven J. Hall, Michelle A. Baker, Scott B. Jones, John M. Stark, David R. Bowling Feb 2016

Contrasting Soil Nitrogen Dynamics Across A Montane Meadow And Urban Lawn In A Semi-Arid Watershed, Steven J. Hall, Michelle A. Baker, Scott B. Jones, John M. Stark, David R. Bowling

Biology Faculty Publications

Urbanization substantially increases nitrogen (N) inputs and hydrologic losses relative to wildland ecosystems, although the fate of N additions to lawns and remnant grasslands remains contested. In montane semi-arid ecosystems, N cycling is often closely coupled to snowmelt (the dominant period of infiltration) and snow cover, which impact soil temperature and moisture. Here, we compared soil N dynamics between a fertilized and irrigated urban lawn and nearby riparian meadow in Salt Lake City, Utah during a snow manipulation experiment. Snow removal increased freeze/thaw events but did not affect N pools, microbial biomass, denitrification potential, or soil oxygen (O2). Mineral ...


Stream Water Nitrogen Inputs Reflects Groundwater Across A Snowmelt-Dominated Montane-To-Urban Watershed, Steven J. Hall, Samantha R. Weintraub, David Eiriksson, Paul D. Brooks, Michelle A. Baker, Gabriel J. Bowen, David R. Bowling Jan 2016

Stream Water Nitrogen Inputs Reflects Groundwater Across A Snowmelt-Dominated Montane-To-Urban Watershed, Steven J. Hall, Samantha R. Weintraub, David Eiriksson, Paul D. Brooks, Michelle A. Baker, Gabriel J. Bowen, David R. Bowling

Biology Faculty Publications

Snowmelt dominates the hydrograph of many temperate montane streams, yet little work has characterized how streamwater sources and nitrogen (N) dynamics vary across wildland to urban land use gradients in these watersheds. Across a third-order catchment in Salt Lake City, Utah, we asked where and when groundwater vs shallow surface water inputs controlled stream discharge and N dynamics. Stream water isotopes (δ2H and δ18O) reflected a consistent snowmelt water source during baseflow. Near-chemostatic relationships between conservative ions and discharge implied that groundwater dominated discharge year-round across the montane and urban sites, challenging the conceptual emphasis on direct stormwater inputs to ...


High And Dry: Post-Fire Tree Seedlingestablishment In Subalpine Forestsdecreases With Post-Fire Drought Andlarge Stand-Replacing Burn Patches, Brian J. Harvey, Daniel C. Donato, Monica G. Turner Jan 2016

High And Dry: Post-Fire Tree Seedlingestablishment In Subalpine Forestsdecreases With Post-Fire Drought Andlarge Stand-Replacing Burn Patches, Brian J. Harvey, Daniel C. Donato, Monica G. Turner

Aspen Bibliography

Aim: Climate warming and increased wildfire activity are hypothesized to catalyse biogeographical shifts, reducing the resilience of fire-prone forests world-wide. Two key mechanisms underpinning hypotheses are: (1) reduced seed availability in large stand-replacing burn patches, and (2) reduced seedling establishment/survival after post-fire drought. We tested for regional evidence consistent with these mechanisms in an extensive fire-prone forest biome by assessing post-fire tree seedling establishment, a key indicator of forest resilience.

Location: Subalpine forests, US Rocky Mountains.

Methods: We analysed post-fire tree seedling establishment from 184 field plots where stand-replacing forest fires were followed by varying post-fire climate conditions. Generalized ...


Managing The Spread Of Alfalfa Stem Nematodes (Ditylenchus Dipsaci): The Relationship Between Crop Rotation Periods And Pest Re-Emergence, S. Jordan, C. Nischwitz, R. A. Ramirez, L. Gordillo Jan 2016

Managing The Spread Of Alfalfa Stem Nematodes (Ditylenchus Dipsaci): The Relationship Between Crop Rotation Periods And Pest Re-Emergence, S. Jordan, C. Nischwitz, R. A. Ramirez, L. Gordillo

Biology Faculty Publications

Alfalfa is a critical cash/rotation crop in the western region of the United States, where it is common to find crops affected by the alfalfa stem nematode (Ditylenchus dipsaci). Understanding the spread dynamics associated with this pest would allow end-users to design better management programs and farming practices. This is of particular importance given that there are no nematicides available against alfalfa stem nematode and control strategies largely rely on crop rotation to non-host crops or by planting resistant varieties. I present a basic host-parasite model that describes the spread of the alfalfa stem nematode on alfalfa crops. With ...


Bromeliad Selection Of Phyllodytes Luteolus (Anura, Hylidae): The Influence Of Plant Structure And Water Quality Factors, Marcio M. Mageski, Rodrigo Barbosa Ferreira, Karen H. Beard, Larissa C. Costa, Paulo R. Jesus, Cinthia C. Medeiros, Paulo D. Ferreira Jan 2016

Bromeliad Selection Of Phyllodytes Luteolus (Anura, Hylidae): The Influence Of Plant Structure And Water Quality Factors, Marcio M. Mageski, Rodrigo Barbosa Ferreira, Karen H. Beard, Larissa C. Costa, Paulo R. Jesus, Cinthia C. Medeiros, Paulo D. Ferreira

Wildland Resources Faculty Publications

Bromeliads are used by many frog species because of their capacity to accumulate rainwater. The bromeligenous frog, Phyllodytes luteolus (Yellow Heart-Tongued Frog), uses bromeliads for its entire life cycle including shelter, foraging, and reproduction. We evaluated the effect of plant morphometrics and the properties of water accumulated in bromeliads on the selection of these plants by P. luteolus. We sampled 103 bromeliads of which 41 were unoccupied and 62 were occupied by P. luteolus. Results suggest that bromeliad occupation by P. luteolus is nonrandom. We found that occupied plants were shorter in height, had a greater number of leaves, and ...


First Report Of Invasive Crane Fly, Tipula Oleracea, In Utah, A Van Dyke, R A. Ramirez, B A. Mcgraw Dec 2015

First Report Of Invasive Crane Fly, Tipula Oleracea, In Utah, A Van Dyke, R A. Ramirez, B A. Mcgraw

Biology Faculty Publications

The known range of the common crane fly (Tipula oleracea L.) is expanding in the western US, as adults were captured (by me) in Utah while emerging and flying over golf course rough. Adults were collected at The Ridge Golf Course in West Valley City on 15 September, 2014, and identified by Dr. Benjamin McGraw at the Pennsylvania State University Turfgrass Entomology Lab in University Park, PA. Crane fly larvae (known as leather jackets for their tough skin) were previously found (again, by me) with the help of golf course superintendent Brian Roth on 4 August, 2012 damaging putting greens ...


Challenging The Discourse Of Untreatability For Borderline Personality Disorder: A Call For Comparative Research, Sandra H. Sulzer Dec 2015

Challenging The Discourse Of Untreatability For Borderline Personality Disorder: A Call For Comparative Research, Sandra H. Sulzer

Kinesiology and Health Science Faculty Publications

A diagnosis of Borderline Personality Disorder (BPD) often signals the quintessential “difficult patient” status to clinicians, with at least one scholar arguing the condition itself was created to name and group difficult patients. While patients who are deemed difficult are often dispreferred for care, does this have an impact on their overall status as medicalized patients who have successfully achieved a sick role? This study relies on (n = 22) in-depth interviews with mental health clinicians in the United States from 2012 to evaluate how they describe patients with BPD, how the diagnosis of BPD affects the treatment clinicians are willing ...


Filtering With A Drill Pump: An Efficient And Cost Effective Method To Collect Suspended Sediment And Filtrate, Julia E. Kelso, Michelle A. Baker Nov 2015

Filtering With A Drill Pump: An Efficient And Cost Effective Method To Collect Suspended Sediment And Filtrate, Julia E. Kelso, Michelle A. Baker

Biology Faculty Publications

Water quality monitoring programs across multiple disciplines use total suspended solids (TSS), and volatile suspended solids (VSS), to assess potential impairments of surface water and groundwater. While previous methods for instream filtering have been developed, the need for rapid, cost-effective, high volume sampling has increased with the need to verify and supplement data produced by sondes and instantaneous data loggers. We present an efficient method to filter water instream with a portable drill pump that results in reduced sample processing time, and potentially reduced error associated with sample transportation, preservation, contamination, and homogenization. This technical note outlines the advantages of ...


Consequences Of Hunter Harvest, Winter Weather, And Increasing Population Size On Survival Of Non-Migratory Canada Geese In Connecticut, Michael R. Conover, Jonathan B. Dinkins, Rebekah E. Ruzicka Nov 2015

Consequences Of Hunter Harvest, Winter Weather, And Increasing Population Size On Survival Of Non-Migratory Canada Geese In Connecticut, Michael R. Conover, Jonathan B. Dinkins, Rebekah E. Ruzicka

Wildland Resources Faculty Publications

Conover, M. R., J. B. Dinkins, and R. E. Ruzicka. 2015. Consequences of hunter harvest, winter weather, and increasing population size on survival of non-migratory Canada geese in Connecticut. Journal of Wildlife Management 79: 1239-1245.


Metabolism, Gas Exchange, And Carbon Spiraling In Rivers, Robert O. Hall Jr, Jennifer L. Tank, Michelle A. Baker, Emma J. Rosi-Marshall, Erin R. Hotchkiss Sep 2015

Metabolism, Gas Exchange, And Carbon Spiraling In Rivers, Robert O. Hall Jr, Jennifer L. Tank, Michelle A. Baker, Emma J. Rosi-Marshall, Erin R. Hotchkiss

Biology Faculty Publications

Ecosystem metabolism, that is, gross primary productivity (GPP) and ecosystem respiration (ER), controls organic carbon (OC) cycling in stream and river networks and is expected to vary predictably with network position. However, estimates of metabolism in small streams outnumber those from rivers such that there are limited empirical data comparing metabolism across a range of stream and river sizes. We measured metabolism in 14 rivers (discharge range 14–84 m3 s−1) in the Western and Midwestern United States (US). We estimated GPP, ER, and gas exchange rates using a Lagrangian, 2-station oxygen model solved in a Bayesian framework. GPP ...


Translational Training For Tomorrow’S Environmental Scientists, Mark W. Brunson, Michelle A. Baker Sep 2015

Translational Training For Tomorrow’S Environmental Scientists, Mark W. Brunson, Michelle A. Baker

Biology Faculty Publications

Environmental science exists to seek solutions to problems related to human-nature interactions. Unfortunately, in many cases, environmental research findings are not effectively used because scientists are not able to convey their knowledge effectively to policy makers and the public, and/or because the questions they address are not directly linked to the answers stakeholders need. To address this issue, Schlesinger (2010) called for development of a “translational ecology” that would be understandable and usable by decision-makers, interest groups, and citizens. A barrier to usable science is that researchers are not usually trained to be translational. We convened a multi-disciplinary group ...


Improving Patient-Centered Communication Of The Borderline Personality Disorder Diagnosis, Sandra H. Sulzer, Elizabeth Muenchow, Annabelle Potvin, Jessica Harris, Grant Gigot Sep 2015

Improving Patient-Centered Communication Of The Borderline Personality Disorder Diagnosis, Sandra H. Sulzer, Elizabeth Muenchow, Annabelle Potvin, Jessica Harris, Grant Gigot

Kinesiology and Health Science Faculty Publications

Background: Borderline personality disorder (BPD) has historically been difficult to diagnose, and laden with stigma, leading to a variety of clinical responses to patients who present with symptoms. Aims: (1) To understand how clinicians communicate the diagnosis of BPD with patients. (2) To compare these practices with patient communication preferences. (3) To use patient preferences to evaluate clinician practices. Methods: Semi-structured interviews with mental health care providers and experts (n = 32) were compared with patients (n = 10) and primary patient-written accounts (n = 22). Grounded theory was used to explore causal pathways between clinical practice and patient responses. Results: The majority ...


Evaluation Of Harvest Indices For Monitoring Cougar Survival And Abundance, Michael L. Wolfe, Eric Gese, Patricia Terletzky, David C. Stoner, Lise M. Aubry Sep 2015

Evaluation Of Harvest Indices For Monitoring Cougar Survival And Abundance, Michael L. Wolfe, Eric Gese, Patricia Terletzky, David C. Stoner, Lise M. Aubry

Wildland Resources Faculty Publications

Harvest indices are used by state wildlife management agencies to monitor population trends and set harvest quotas for furbearer species. Although harvest indices may be readily collected from hunters, the reliability of harvest indices for monitoring demography and abundance of the harvested species is rarely examined, particularly amongst large carnivores. The overall objective of this study was to assess whether cougar (Puma concolor) harvest statistics collected by wildlife managers were correlated with changes in cougar demography, mainly survival rates and abundance. We estimated key demographic parameters for 2 cougar populations in Utah over 17 years during which we monitored 235 ...


Influence Of Shelterbelts On Success And Density Of Waterfowl Nests Within The Prairie Pothole Region Of North America, Jennifer S. Borgo, Michael R. Conover Aug 2015

Influence Of Shelterbelts On Success And Density Of Waterfowl Nests Within The Prairie Pothole Region Of North America, Jennifer S. Borgo, Michael R. Conover

Wildland Resources Faculty Publications

Shelterbelts are long rows of trees planted in the Great Plains of North America to reduce wind erosion of soil. Shelterbelts alter airflow, creating updrafts on the windward side (updraft zone), slow winds immediately on the leeward side (calm zone), and increased turbulence farther downwind of the shelterbelt (turbulent zone). They also provide hunting perches for avian predators and serve as corridors for mammalian predators. By determining the fate of 247 duck nests located in 27 Waterfowl Production Areas during 2006 and 2007, this study tested the hypothesis that duck nests located close to shelterbelts are more likely to be ...


The Varying Role Of Water Column Nutrient Removal Along River Continua In Contrasting Landscapes, Alexander J. Reisinger, Jennifer L. Tank, Emma J. Rosi-Marshall, Robert O. Hall Jr, Michelle A. Baker Jun 2015

The Varying Role Of Water Column Nutrient Removal Along River Continua In Contrasting Landscapes, Alexander J. Reisinger, Jennifer L. Tank, Emma J. Rosi-Marshall, Robert O. Hall Jr, Michelle A. Baker

Biology Faculty Publications

Nutrient transformation processes such as assimilation, dissimilatory transformation, and sorption to sediments are prevalent in benthic zones of headwater streams, but may also occur in the water column. The river continuum concept (RCC) predicts that water column processes become increasingly important with increasing stream size. We predicted that water column nutrient uptake increases with stream size, mirroring carbon/energy dynamics predicted by the RCC. We measured water column uptake of ammonium ( NH+4NH4+ ), nitrate ( NO−3NO3− ), and soluble reactive phosphorus (SRP) in 1st through 5th order stream and river reaches (discharge: 50–68,000 L s−1) in three watersheds ...


Spatio-Temporal Patterns In The Depredation Of Waterfowl Nests In The Prairie Potholes Region, Usa, Jennifer S. Borgo, Michael R. Conover Mar 2015

Spatio-Temporal Patterns In The Depredation Of Waterfowl Nests In The Prairie Potholes Region, Usa, Jennifer S. Borgo, Michael R. Conover

Wildland Resources Faculty Publications

Nest depredation is the leading cause of waterfowl nest failures in much of the Prairie Pothole Region, USA. In 2006 and 2007, spatial and temporal patterns of nest depredation were evaluated on 248 waterfowl nests and 88 simulated waterfowl nests in North Dakota, USA. The hypothesis that predators are able to locate adjacent nests using an area-restricted search once they find the first nest and that ducks will space their nests apart to reduce this from happening was tested. However, no evidence was found to support either part of this hypothesis or that density-dependent depredation was occurring. This lack of ...


Pathology In Practice - Fascioliasis In A Dahl Sheep, David J. Wilson, T. J. Baldwin, Kerry A. Rood Jan 2015

Pathology In Practice - Fascioliasis In A Dahl Sheep, David J. Wilson, T. J. Baldwin, Kerry A. Rood

Animal, Dairy, and Veterinary Science Faculty Publications

In early fall 2012, a 48-kg (106-lb) sexually intact male Dahl ram in fair body condition was found dead; the owner observed no clinical signs prior to death. The ram was part of a flock of 50 game animals used for high-fence hunting that was moved among pastures in Idaho, Utah, and Montana. The ram was housed primarily on flood-irrigated pasture in common with approximately 170 captive Rocky Mountain elk (Cervus canadensis). The owner reported that 12 other sheep had died over the past year without observed clinical signs, but none were submitted for postmortem examination. Both sheep and elk ...


Learning To Love Leftovers: Using By-Catch To Expand Our Knowledge In Entomology, L Spears, R A. Ramirez Jan 2015

Learning To Love Leftovers: Using By-Catch To Expand Our Knowledge In Entomology, L Spears, R A. Ramirez

Biology Faculty Publications

No abstract provided.


Breeding Origins Of Northern Shovelers (Anas Clypeata) Wintering On The Great Salt Lake, Utah, Anthony J. Roberts, Michael R. Conover Sep 2014

Breeding Origins Of Northern Shovelers (Anas Clypeata) Wintering On The Great Salt Lake, Utah, Anthony J. Roberts, Michael R. Conover

Wildland Resources Faculty Publications

The breeding origin and migratory connectivity of wintering birds are important to address how population changes on wintering areas are impacted by changes elsewhere in the birds’ annual cycle. In addition, identifying important point sources of nutrients used throughout the annual cycle can assist managers in identifying sources of toxins or pathogens. We used stable hydrogen isotope ratios to identify breeding locations of Northern Shovelers (Anas clypeata; henceforth shoveler) wintering at the Great Salt Lake (GSL), Utah. Stable-isotope likelihood-based assignment placed the largest number of shovelers collected during winter on the GSL as breeding in the western US and southern ...


Us Epa Expert Workshop: Nutrient Enrichment Indicators In Streams, Michelle A. Baker, Candice Bauer, Max Bothwell, Don Charles, Betty Fetscher, Stuart Findlay, Terry Fleming, Steve Francoeur, Evelyn Gaiser, Jim Hagy, Anne Hershey, Lisa Huff, Ryan King, Tina Laidlaw, Mark Munn, Greg Pond, Steven Rier, Bob Sinsabaugh, A J. Smith, Nathan Smucker, Jan Stevenson, Mike Suplee Sep 2014

Us Epa Expert Workshop: Nutrient Enrichment Indicators In Streams, Michelle A. Baker, Candice Bauer, Max Bothwell, Don Charles, Betty Fetscher, Stuart Findlay, Terry Fleming, Steve Francoeur, Evelyn Gaiser, Jim Hagy, Anne Hershey, Lisa Huff, Ryan King, Tina Laidlaw, Mark Munn, Greg Pond, Steven Rier, Bob Sinsabaugh, A J. Smith, Nathan Smucker, Jan Stevenson, Mike Suplee

Biology Faculty Publications

No abstract provided.