14 Works

Data from: On the widespread capacity for and functional significance of extreme inbreeding in ferns

Emily B. Sessa, Weston L. Testo, & James E. Watkins
Homosporous vascular plants utilize three different mating systems, one of which, gametophytic selfing, is an extreme form of inbreeding only possible in homosporous groups. This mating system results in complete homozygosity in all progeny and has important evolutionary and ecological implications. Ferns are the largest group of homosporous land plants, and the significance of extreme inbreeding for fern evolution has been the subject of debate for decades. We cultured gametophytes in the laboratory and quantified...

Data from: Long-term impacts of variable retention harvesting on ground-layer plant communities in Pinus resinosa forests

Margaret W. Roberts, Anthony W. D'Amato, Christel C. Kern & Brian J. Palik
Concerns about loss of biodiversity and structural complexity in managed forests have recently increased and led to the development of new management strategies focused on restoring or maintaining ecosystem functions while also providing wood outputs. Variable Retention Harvest (VRH) systems, in which mature overstorey trees are retained in various spatial arrangements across harvested areas, represent one potential approach to this problem. However, long-term evaluations of the effectiveness of this strategy at sustaining plant community composition...

Data from: Ultrasound evaluation of the combined effects of thoracolumbar fascia injury and movement restriction in a porcine model

James H. Bishop, James R. Fox, Rhonda Maple, Caitlin Loretan, Gary J. Badger, Sharon M. Henry, Margaret A. Vizzard & Helene M. Langevin
The persistence of back pain following acute back “sprains” is a serious public health problem with poorly understood pathophysiology. The recent finding that human subjects with chronic low back pain (LBP) have increased thickness and decreased mobility of the thoracolumbar fascia measured with ultrasound suggest that the fasciae of the back may be involved in LBP pathophysiology. This study used a porcine model to test the hypothesis that similar ultrasound findings can be produced experimentally...

Data from: Opportunities for biodiversity gains under the world’s largest reforestation programme

Fangyuan Hua, Xiaoyang Wang, Xinlei Zheng, Robert Dorazio, Brendan Fisher, Lin Wang, Jianguo Zhu, Ya Tang, Douglas W. Yu & David S. Wilcove
Reforestation is a critical means of addressing the environmental and social problems of deforestation. China’s Grain-for-Green Program (GFGP) is the world’s largest reforestation scheme. Here we provide the first nationwide assessment of the tree composition of GFGP forests and the first combined ecological and economic study aimed at understanding GFGP’s biodiversity implications. Across China, GFGP forests are overwhelmingly monocultures or compositionally simple mixed forests. Focusing on birds and bees in Sichuan Province, we find that...

Data from: Density-dependent vulnerability of forest ecosystems to drought

Alessandra Bottero, Anthony W. D'Amato, Brian J. Palik, John B. Bradford, Shawn Fraver, Michael A. Battaglia, Lance A. Asherin & Mike A. Battaglia
Climate models predict increasing drought intensity and frequency for many regions, which may have negative consequences for tree recruitment, growth, and mortality, as well as forest ecosystem services. Furthermore, practical strategies for minimizing vulnerability to drought are limited. Tree population density, a metric of tree abundance in a given area, is a primary driver of competitive intensity among trees, which influences tree growth and mortality. Manipulating tree population density may be a mechanism for moderating...

Data from: Ecosystem carbon density and allocation across a chronosequence of longleaf pine forests

Lisa J. Samuelson, Thomas A. Stokes, John R. Butnor, Kurt H. Johnsen, Carlos A. Gonzalez-Benecke, Timothy A. Martin, , Pete H. Anderson, Michael R. Ramirez, John C. Lewis & Wendell P. Cropper
Forests can partially offset greenhouse gas emissions and contribute to climate change mitigation, mainly through increases in live biomass. We quantified carbon (C) density in 20 managed longleaf pine (Pinus palustris Mill.) forests ranging in age from five to 118 years located across the southeastern USA and estimated above and belowground C trajectories. Ecosystem C stock (all pools including soil C) and aboveground live tree C increased nonlinearly with stand age and the modeled asymptotic...

Data from: Spider phylogenomics: untangling the spider tree of life

Jason Bond, Nicole L. Garrison, Juanita Rodriguez, Ingi Agnarsson, Jonathan A. Coddington, Charles E. Griswold, Christopher A. Hamilton, Marshal Hedin, Kevin Kocot, Joel M. Ledford & Jason E. Bond
Spiders (Order Araneae) are massively abundant generalist arthropod predators that are found in nearly every ecosystem on the planet and have persisted for over 380 million years. Spiders have long served as evolutionary models for studying complex mating and web spinning behaviors, key innovation and adaptive radiation hypotheses, and have been inspiration for important theories like sexual selection by female choice. Unfortunately, past major attempts to reconstruct spider phylogeny typically employing the “usual suspect” genes...

Data from: Geographic origins and population genetics of bats killed at wind-energy facilities

Cortney L. Pylant, David M. Nelson, Matthew C. Fitzpatrick, J. Edward Gates & Stephen R. Keller
An unanticipated impact of wind-energy development has been large-scale mortality of insectivorous bats. In eastern North America, where mortality rates are among the highest in the world, the hoary bat (Lasiurus cinereus) and the eastern red bat (L. borealis) comprise the majority of turbine-associated bat mortality. Both species are migratory tree bats with widespread distributions; however, little is known regarding the geographic origins of bats killed at wind-energy facilities or the diversity and population structure...

Data from: Beyond thermal limits: comprehensive metrics of performance identify key axes of thermal adaptation in ants

Clint A. Penick, Sarah E. Diamond, Nathan J. Sanders & Robert R. Dunn
How species respond to temperature change depends in large part on their physiology. Physiological traits, such as critical thermal limits (CTmax and CTmin), provide estimates of thermal performance but may not capture the full impacts of temperature on fitness. Rather, thermal performance likely depends on a combination of traits—including thermal limits—that vary among species. Here we examine how thermal limits correlate with the main components that influence fitness in ants. First, we compare how temperature...

Data from: Sub-lethal effects on fish provide insight into a biologically-relevant threshold of hypoxia

Allison R. Hrycik, L. Zoe Almeida & Tomas O. Hӧӧk
Hypoxia (low dissolved oxygen) is a mounting concern for aquatic ecosystems as its prevalence increases with rising anthropogenic nutrient inputs. Hypoxia is most commonly defined as 2.0 mg l–1 of dissolved oxygen, although this level varies widely across studies and agency regulations. Such definitions may be too conservative, as ecologically-relevant non-lethal effects (e.g. consumption and growth) of hypoxia on important aquatic species, such as fish, often occur at oxygen levels much higher than 2.0 mg...

Data from: Pyrogenic fuels produced by savanna trees can engineer humid savannas

William J. Platt, Darin P. Ellair, Jean M. Huffman, Stephen E. Potts & Brian Beckage
Natural fires ignited by lightning strikes following droughts frequently are posited as the ecological mechanism maintaining discontinuous tree cover and grass-dominated ground layers in savannas. Such fires, however, may not reliably maintain humid savannas. Pyrogenic shed leaves of savanna trees, however, might engineer fire characteristics in ways that maintain humid savannas through effects on ground layer plants. We explored our hypothesis in a high-rainfall, frequently-burned pine savanna in which the dominant tree, longleaf pine (Pinus...

Data from: The evolution of heat shock protein sequences, cis-regulatory elements, and expression profiles in the eusocial Hymenoptera

Andrew D. Nguyen, Nicholas J. Gotelli & Sara Helms Cahan
Background: The eusocial Hymenoptera have radiated across a wide range of thermal environments, exposing them to significant physiological stressors. We reconstructed the evolutionary history of three families of Heat Shock Proteins (Hsp90, Hsp70, Hsp40), the primary molecular chaperones protecting against thermal damage, across 12 Hymenopteran species and four other insect orders. We also predicted and tested for thermal inducibility of eight Hsps from the presence of cis-regulatory heat shock elements (HSEs). We tested whether Hsp...

Data from: Variant at serotonin transporter gene predicts increased imitation in toddlers: relevance to the human capacity for cumulative culture

Kari Britt Schroeder, Philip Asherson, Peter R. Blake, Susan K. Fenstermacher & Kimberly J. Saudino
Cumulative culture ostensibly arises from a set of sociocognitive processes which includes high-fidelity production imitation, prosociality and group identification. The latter processes are facilitated by unconscious imitation or social mimicry. The proximate mechanisms of individual variation in imitation may thus shed light on the evolutionary history of the human capacity for cumulative culture. In humans, a genetic component to variation in the propensity for imitation is likely. A functional length polymorphism in the serotonin transporter...

Data from: Spatial and temporal dynamics and value of nature-based recreation, estimated via social media

Laura J. Sonter, Keri B. Watson, Spencer A. Wood & Taylor H. Ricketts
Conserved lands provide multiple ecosystem services, including opportunities for nature-based recreation. Managing this service requires understanding the landscape attributes underpinning its provision, and how changes in land management affect its contribution to human wellbeing over time. However, evidence from both spatially explicit and temporally dynamic analyses is scarce, often due to data limitations. In this study, we investigated nature-based recreation within conserved lands in Vermont, USA. We used geotagged photographs uploaded to the photo-sharing website...

Registration Year

  • 2016

Resource Types

  • Dataset


  • University of Vermont
  • United States Department of Agriculture
  • University of Minnesota
  • Auburn University
  • University of Florida
  • University of Washington
  • Stanford University
  • Princeton University
  • The Ohio State University
  • Sichuan University