11 Works

Data from: Mismatch between dietary requirements for lipid by a predator and availability of lipid in prey

Will D. Wiggins & Shawn M. Wilder
Growth is an important factor in predicting an organism's overall success as an adult. Understanding how abiotic and biotic factors influence body size is key to predicting how environmental changes will impact organisms and predicting optimal behaviors under varying conditions. Food items can vary widely in nutrient content and this variation can affect growth. We tested how the quantity and macronutrient content of live prey affected the growth of juvenile jumping spiders, Phiddipus audax, using...

Data from: Restoring fire to grasslands is critical for migrating shorebird populations

Torre J. Hovick, J. Matthew Carroll, R. Dwayne Elmore, Craig A. Davis & Samuel D. Fuhlendorf
Fire is a disturbance process that maintains the structure and function of grassland ecosystems while sustaining grassland biodiversity. Conversion of grasslands to other land uses coupled with altered disturbance regimes have greatly diminished the habitat available to many grassland dependent species. These changes have been linked to declines in breeding bird populations, but may also be critical for migrating bird populations such as those shorebird species that depend on mesic grasslands during migration. We examined...

Data from: Reproductive plasticity and landscape heterogeneity benefit a ground-nesting bird in a fire-prone ecosystem

J. Matthew Carroll, Torre J. Hovick, Craig A. Davis, Robert Dwayne Elmore & Samuel D. Fuhlendorf
Disturbance is critical for the conservation of rangeland ecosystems worldwide and many of these systems are fire dependent. Although it is well established that restoring fire as an ecological process can lead to increased biodiversity in grasslands and shrublands, the underlying mechanisms driving community patterns are poorly understood for fauna in fire-prone landscapes. Much of this uncertainty stems from the paucity of studies that examine the effects of fire at scales relevant to organism life...

Data from: Mycorrhizal symbioses influence the trophic structure of the Serengeti

Bo Maxwell Stevens, Jeffrey Propster, Gail W. T. Wilson, Andrew Abraham, Chase Ridenour, Chris Doughty, Nancy Collins Johnson & Christopher Doughty
It is known that tropical grasslands such as Serengeti host large populations of arbuscular mycorrhizal (AM) fungi and that they respond to abiotic and biotic factors. It is also known that AM symbioses are important for the uptake of essential plant nutrients, which, in turn, influences the biomass and nutritional quality of herbivores and their predators. The purpose of this study was to investigate the influence of AM symbioses on the biomass of different trophic...

Data from: Exacerbated grassland degradation and desertification in Central Asia during 2000-2014

Geli Zhang, Chandrashekhar M. Biradar, Xiangming Xiao, Jinwei Dong, Yuting Zhou, Yuanwei Qin, Yao Zhang, Fang Liu, Mingjun Ding & Richard J. Thomas
Grassland degradation and desertification is a complex process, including both state conversion (e.g., grasslands to deserts) and gradual within-state change (e.g., greenness dynamics). Existing studies hardly separated the two components and analyzed it as a whole based on time series vegetation index data, which however cannot provide a clear and comprehensive picture for grassland degradation and desertification. Here we proposed an integrated assessment strategy, by considering both state conversion and within-state change of grasslands, to...

Data from: Diversification rates are more strongly related to microhabitat than climate in squamate reptiles (lizards and snakes)

Melissa Bars-Closel, Tiana Kohlsdorf, Daniel S. Moen & John J. Wiens
Patterns of species richness among clades can be directly explained by the ages of clades or their rates of diversification. The factors that most strongly influence diversification rates remain highly uncertain, since most studies typically consider only a single predictor variable. Here, we explore the relative impacts of macroclimate (i.e., occurring in tropical vs. temperate regions) and microhabitat use (i.e., terrestrial, fossorial, arboreal, aquatic) on diversification rates of squamate reptile clades (lizards and snakes). We...

Data from: Genomic prediction accuracies in space and time for height and wood density of Douglas-fir using exome capture as the genotyping platform

Frances R. Thistlethwaite, Blaise Ratcliffe, Jaroslav Klápště, Ilga Porth, Charles Chen, Michael U. Stoehr & Yousry A. El-Kassaby
Background Genomic selection (GS) can offer unprecedented gains, in terms of cost efficiency and generation turnover, to forest tree selective breeding; especially for late expressing and low heritability traits. Here, we used: 1) exome capture as a genotyping platform for 1372 Douglas-fir trees representing 37 full-sib families growing on three sites in British Columbia, Canada and 2) height growth and wood density (EBVs), and deregressed estimated breeding values (DEBVs) as phenotypes. Representing models with (EBVs)...

Data from: Incorporating abundance information and guiding variable selection for climate-based ensemble forecasting of species' distributional shifts

Evan P. Tanner, Monica Papes, R. Dwayne Elmore, Samuel D. Fuhlendorf & Craig A. Davis
Ecological niche models (ENMs) have increasingly been used to estimate the potential effects of climate change on species’ distributions worldwide. Recently, predictions of species abundance have also been obtained with such models, though knowledge about the climatic variables affecting species abundance is often lacking. To address this, we used a well-studied guild (temperate North American quail) and the Maxent modeling algorithm to compare model performance of three variable selection approaches: correlation/variable contribution (CVC), biological (i.e.,...

Data from: Pyric-carnivory: raptor use of prescribed fires

Torre J. Hovick, Devan A. McGranahan, Robert Dwayne Elmore, John R. Weir & Samuel D. Fuhlendorf
Fire is a process that shaped and maintained most terrestrial ecosystems worldwide. Changes in land use and patterns of human settlement have altered fire regimes and led to fire suppression resulting in numerous undesirable consequences spanning individual species and entire ecosystems. Many obvious and direct consequences of fire suppression have been well studied, but several, albeit less obvious, costs of alteration to fire regimes on wildlife are unknown. One such phenomenon is the response of...

Data from: Preference evaluation of ground beef by untrained subjects with three levels of finely textured beef

Bailey Norwood, Sandra Molly Depue, Jayson L. Lusk, F. Bailey Norwood, Morgan Marie Neilson, Gretchen Mafi, Ranjith Ramanathan & Deborah VanOverbeke
After receiving bad publicity in 2012 and being removed from many ground beef products, finely textured beef (referred to as 'pink slime' by some) is making a comeback. Some of its proponents argue that consumers prefer ground beef containing finely textured beef, but no objective scientific party has tested this claim—that is the purpose of the present study. Over 200 untrained subjects participated in a sensory analysis in which they tasted one ground beef sample...

Data from: A generalized solution procedure for in-plane free vibration of rectangular plates and annular sectorial plates

Siyuan Bao & Shuodao Wang
A generalized solution procedure is developed for in-plane free vibration of rectangular and annular sectorial plates with general boundary conditions. For the annular sectorial plate, the introduction of a logarithmic radial variable simplifies the basic theory and the expression of the total energy. The coordinates, geometric parameters and potential energy for the two different shapes are organized in a unified framework such that a generalized solving procedure becomes feasible. By using the improved Fourier-Ritz approach,...

Registration Year

  • 2017
    11

Resource Types

  • Dataset
    11

Affiliations

  • Oklahoma State University
    11
  • North Dakota State University
    3
  • Fudan University
    1
  • University of Tennessee at Knoxville
    1
  • Northern Arizona University
    1
  • University of Oklahoma
    1
  • Ministry of Forests Lands and Natural Resource Operations
    1
  • University of Arizona
    1
  • University of British Columbia
    1
  • Suzhou University of Science and Technology
    1