18 Works

Data from: Consequences of seed origin and biological invasion for early establishment of a North American grass species

Mollie E. Herget, Kristina M. Hufford, Daniel L. Mummey & Lauren N. Shreading
Local, wild-collected seeds of native plants are recommended for use in ecological restoration to maintain patterns of adaptive variation. However, some environments are so drastically altered by exotic, invasive weeds that original environmental conditions may no longer exist. Under these circumstances, cultivated varieties selected for improved germination and vigor may have a competitive advantage at highly disturbed sites. This study investigated differences in early establishment and seedling performance between wild and cultivated seed sources of...

Data from: Natural genetic variation in Arabidopsis thaliana defense metabolism genes modulate field fitness

Rachel Kerwin, Julie Feusier, Jason Corwin, Matthew Rubin, Catherine Lin, Alise Muok, Brandon Larson, Baohua Li, Bindu Joseph, Marta Francisco, Daniel Copeland, Cynthia Weinig & Daniel J. Kliebenstein
Natural populations persist in complex environments, where biotic stressors, such as pathogen and insect communities, fluctuate temporally and spatially. These shifting biotic pressures generate heterogeneous selective forces that can maintain standing natural variation within a species. To directly test if genes containing causal variation for the Arabidopsis thaliana defensive compounds, glucosinolates (GSL) control field fitness and are therefore subject to natural selection, we conducted a multi-year field trial using lines that vary in only specific...

Data from: Population connectivity and genetic structure of burbot (Lota lota) populations in the Wind River Basin, Wyoming

Zachary E. Underwood, Elizabeth G. Mandeville & Annika W. Walters
Burbot (Lota lota) occur in the Wind River Basin in central Wyoming, USA, at the southwestern extreme of the species’ native range in North America. The most stable and successful of these populations occur in six glacially carved mountain lakes on three different tributary streams and one large main stem impoundment (Boysen Reservoir) downstream from the tributary populations. Burbot are rarely found in connecting streams and rivers, which are relatively small and high gradient, with...

Data from: The evolution of novel host use is unlikely to be constrained by tradeoffs or a lack of genetic variation

Zachariah Gompert, Joshua P. Jahner, Cynthia F. Scholl, Joseph S. Wilson, Lauren K. Lucas, Victor Soria-Carrasco, James A. Fordyce, Chris C. Nice, C. Alex Buerkle & Matthew L. Forister
The genetic and ecological factors that shape the evolution of animal diets remain poorly understood. For herbivorous insects, the expectation has been that trade-offs exist, such that adaptation to one host plant reduces performance on other potential hosts. We investigated the genetic architecture of alternative host use by rearing individual Lycaeides melissa butterflies from two wild populations in a crossed design on two hosts (one native and one introduced) and analysing the genetic basis of...

Data from: Genetic architecture, biochemical underpinnings, and ecological impact of floral UV patterning

Marcus Brock, Lauren Lucas, Nickolas A. Anderson, Matthew Rubin, R. J. Markelz, Michael Covington, Upendra Devisetty, Clint Chapple, Julin Maloof, Cynthia Weinig, Lauren K. Lucas, Marcus T. Brock, Matthew J. Rubin, R. J. Cody Markelz, Michael F. Covington, Upendra K. Devisetty & Julin N. Maloof
Floral attraction traits can significantly affect pollinator visitation patterns, but adaptive evolution of these traits may be constrained by correlations with other traits. In some cases, molecular pathways contributing to floral attraction are well-characterized, offering the opportunity to explore loci potentially underlying variation among individuals. Here, we quantify the range of variation in floral UV patterning (i.e., UV “bulls-eye” nectar guides) among crop and wild accessions of Brassica rapa. We then use experimental crosses to...

Data from: Elephant damage, not fire or rainfall, explains mortality of overstorey trees in Serengeti

Thomas A. Morrison, Ricardo M. Holdo & T. Michael Anderson
Generalizations about the drivers of tree demography in tropical savannahs continue to prove difficult because of the complex and dynamic interactions involved, and because multi-year datasets spanning meaningful gradients in potential drivers are lacking. Overstorey trees play disproportionate roles in the long-term dynamics and functioning of savannah ecosystems. Understanding demographic patterns in these trees is complicated by their resprouting ability after being top-killed and few studies have attempted to separate top-kill from true mortality events....

Data from: Interplanting annual ryegrass, wheat, oat, and corn to mitigate iron deficiency in dry beans

Emmanuel Chiwo Omondi & Andrew R. Kniss
This study evaluated whether grass intercropping can be used to alleviate Fe deficiency chlorosis in dry beans (Phaseolus vulgaris L.) grown in high pH, calcareous soils with low organic matter. Field studies were conducted at the University of Wyoming Sustainable Agriculture Research and Extension Center in 2009 and 2010. Black- and navy beans were grown alone or intercropped with annual ryegrass (Lolium multiflorum Lam.), oat (Avena sativa L.), corn (Zea mays L.), or spring wheat...

Data from: Synergistic effects of fire and elephants on arboreal animals in an African savannah

Robert M. Pringle, Duncan M. Kimuyu, Ryan L. Sensenig, Todd M. Palmer, Corinna Riginos, Kari E. Veblen & Truman P. Young
1. Disturbance is a crucial determinant of animal abundance, distribution and community structure in many ecosystems, but the ways in which multiple disturbance types interact remain poorly understood. The effects of multiple-disturbance interactions can be additive, subadditive or super-additive (synergistic). Synergistic effects in particular can accelerate ecological change; thus, characterizing such synergies, the conditions under which they arise, and how long they persist has been identified as a major goal of ecology. 2. We factorially...

Data from: Worldwide evidence of a unimodal relationship between productivity and plant species richness

Lauchlan H. Fraser, Jason Pither, Anke Jentsch, Marcelo Sternberg, Martin Zobel, Diana Askarizadeh, Sandor Bartha, Carl Beierkuhnlein, Jonathan A. Bennett, Alex Bittel, Bazartseren Boldgiv, Ilsi I. Boldrini, Edward Bork, Leslie Brown, Marcelo Cabido, James Cahill, Cameron N. Carlyle, Giandiego Campetella, Stefano Chelli, Ofer Cohen, Anna-Maria Csergo, Sandra Diaz, Lucas Enrico, David Ensing, Alessandra Fidelis … & Talita Zupo
The search for predictions of species diversity across environmental gradients has challenged ecologists for decades. The humped-back model (HBM) suggests that plant diversity peaks at intermediate productivity; at low productivity few species can tolerate the environmental stresses, and at high productivity a few highly competitive species dominate. Over time the HBM has become increasingly controversial, and recent studies claim to have refuted it. Here, by using data from coordinated surveys conducted throughout grasslands worldwide and...

Data from: Neural modularity helps organisms evolve to learn new skills without forgetting old

Kai Olav Ellefsen, Jean-Baptiste Mouret & Jeff Clune
A long-standing goal in artificial intelligence is creating agents that can learn a variety of different skills for different problems. In the artificial intelligence subfield of neural networks, a barrier to that goal is that when agents learn a new skill they typically do so by losing previously acquired skills, a problem called catastrophic forgetting. That occurs because, to learn the new task, neural learning algorithms change connections that encode previously acquired skills. How networks...

Data from: Highly variable reproductive isolation among pairs of Catostomus species

Elizabeth G. Mandeville, Thomas L. Parchman, David B. McDonald & C. Alex Buerkle
Hybridization between diverged taxa tests the strength of reproductive isolation and can therefore reveal mechanisms of reproductive isolation. However, it remains unclear how consistent reproductive isolation is across species' ranges and to what extent reproductive isolation might remain polymorphic as species diverge. To address these questions, we compared outcomes of hybridization across species pairs of Catostomus fishes in three rivers in the Upper Colorado River basin, where an introduced species, C. commersoni, hybridizes with at...

Data from: Population genomics of divergence among extreme and intermediate color forms in a polymorphic insect

Jeffrey D. Lozier, Jason M. Jackson, Michael E. Dillon & James P. Strange
Geographic variation in insect coloration is among the most intriguing examples of rapid phenotypic evolution and provides opportunities to study mechanisms of phenotypic change and diversification in closely related lineages. The bumble bee Bombus bifarius comprises two geographically disparate color groups characterized by red-banded and black-banded abdominal pigmentation, but with a range of spatially and phenotypically intermediate populations across western North America. Microsatellite analyses have revealed that B. bifarius in the USA are structured into...

Data from: Toward a mechanistic understanding of human-induced rapid environmental change: a case study linking energy development, nest predation, and predators

Matthew G. Hethcoat & Anna D. Chalfoun
1. Demographic consequences of human-induced rapid environmental change (HIREC) have been widely documented for many populations. The mechanisms underlying such patterns, however, are rarely investigated and yet are critical to understand for effective conservation and management. 2. We investigated the mechanisms underlying reduced avian nest survival with intensification of natural gas development, an increasing source of HIREC globally. We tested the hypothesis that energy development increased the local activity of important nest predator species thereby...

Data from: The genetic architecture of hybrid incompatibilities and their effect on barriers to introgression in secondary contact

Dorothea Lindtke & C. Alex Buerkle
Genetic incompatibilities are an important component of reproductive isolation. Although theoretical studies have addressed their evolution, little is known about their maintenance when challenged by potentially high migration rates in secondary contact. Whereas theory predicts that recombination can erode barriers, many empirical systems have been found to retain species-specific differences despite substantial gene flow. By simulating whole genomes in individuals of hybridizing species, we find that the genetic architecture of two contrasting models of epistatic...

Data from: Colonization from divergent ancestors: glaciation signatures on contemporary patterns of genomic variation in Collared Pikas (Ochotona collaris)

Hayley C. Lanier, Rob Massatti, Qixin He, Link E. Olson & L. Lacey Knowles
Identifying the genetic structure of a species and the factors that drive it is an important first step in modern population management, in part because populations evolving from separate ancestral sources may possess potentially different characteristics. This is especially true for climate-sensitive species such as pikas, where the delimitation of distinct genetic units and the characterization of population responses to contemporary and historical environmental pressures are of particular interest. We combined a restriction site-associated DNA...

Data from: Seasonality of soil moisture mediates responses of ecosystem phenology to elevated CO2 and warming in a semi-arid grassland

Tamara J. Zelikova, David G. Williams, Rhonda Hoenigman, Dana M. Blumenthal, Jack A. Morgan & Elise Pendall
Vegetation greenness, detected using digital photography, is useful for monitoring phenology of plant growth, carbon uptake, and water loss at the ecosystem level. Assessing ecosystem phenology by greenness is especially useful in spatially extensive, water-limited ecosystems such as the grasslands of the western United States, where productivity is moisture dependent and may become increasingly vulnerable to future climate change. We used repeat photography and a novel means of quantifying greenness in digital photographs to assess...

Data from: Evaluating distributional shifts in home range estimates

Justin G. Clapp & Jeffrey L. Beck
A variety of methods are commonly used to quantify animal home ranges using location data acquired with telemetry. High-volume location data from global positioning system (GPS) technology provide researchers the opportunity to identify various intensities of use within home ranges, typically quantified through utilization distributions (UDs). However, the wide range of variability evident within UDs constructed with modern home range estimators is often overlooked or ignored during home range comparisons, and challenges may arise when...

Data from: The network motif architecture of dominance hierarchies

Daizaburo Shizuka & David B. McDonald
The widespread existence of dominance hierarchies has been a central puzzle in social evolution, yet we lack a framework for synthesizing the vast empirical data on hierarchy structure in animal groups. We applied network motif analysis to compare the structures of dominance networks from data published over the past 80 years. Overall patterns of dominance relations, including some aspects of non-interactions, were strikingly similar across disparate group types. For example, nearly all groups exhibited high...

Registration Year

  • 2015

Resource Types

  • Dataset


  • University of Wyoming
  • Utah State University
  • Princeton University
  • University of Nevada Reno
  • United States Department of Agriculture
  • University of Florida
  • University of Sheffield
  • University of California, Davis
  • University of Camerino
  • University of Kansas