59 Works

Data from: Genomic regions underlying metabolic and neuronal signaling pathways are temporally consistent outliers in a moving avian hybrid zone

Dominique Wagner, Robert Curry, Nancy Chen, Irby Lovette & Scott Taylor
The study of hybrid zones can provide insight into the genetic basis of species differences that are relevant for the maintenance of reproductive isolation. Hybrid zones can also provide insight into climate change, species distributions, and evolution. The hybrid zone between black-capped chickadees (Poecile atricapillus) and Carolina chickadees (P. carolinensis) is shifting northward in response to increasing winter temperatures but is not increasing in width. This pattern indicates strong selection against chickadees with admixed genomes....

Genomic variation in the American pika: signatures of geographic isolation and implications for conservation

Kelly B. Klingler, Joshua P. Jahner, Thomas L. Parchman, Chris Ray & Mary M. Peacock
Distributional responses by alpine taxa to repeated, glacial-interglacial cycles throughout the last two million years have significantly influenced the spatial genetic structure of populations. These effects have been exacerbated for the American pika (Ochotona princeps), a small alpine lagomorph constrained by thermal sensitivity and a limited dispersal capacity. As a species of conservation concern, long-term lack of gene flow has important consequences for landscape genetic structure and levels of diversity within populations. Here, we use...

Data from: Disturbance detection in Landsat time series is influenced by tree mortality agent and severity, not by prior disturbance

Kyle Rodman, Robert Andrus, Thomas Veblen & Sarah Hart
Landsat time series (LTS) and associated change detection algorithms are useful for monitoring the effects of global change on Earth’s ecosystems. Because LTS algorithms can be easily applied across broad areas, they are commonly used to map changes in forest structure due to wildfire, insect attack, and other important drivers of tree mortality. But factors such as initial forest density, tree mortality agent, and disturbance severity (i.e., percent tree mortality) influence patterns of surface reflectance...

Parasite exposure and host susceptibility jointly drive the emergence of epidemics

Tara Stewart Merrill, Spencer Hall & Carla Cáceres
Parasite transmission is thought to depend on both parasite exposure and host susceptibility to infection; however, the relative contribution of these two factors to epidemics remains unclear. We used interactions between an aquatic host and its fungal parasite to evaluate how parasite exposure and host susceptibility interact to drive epidemics. In six lakes, we tracked the following factors from pre-epidemic to epidemic emergence: 1) parasite exposure (measured observationally as fungal spores attacking wild-caught hosts), 2)...

Latitudinal gradients in population growth do not reflect demographic responses to climate

Megan Peterson, Graham Bailes, Lauren Hendricks, Laurel Pfeifer-Meister, Paul Reed, Scott Bridgham, Bart Johnson, Robert Shriver, Ellen Waddle, Hannah Wroton, Daniel Doak, Bitty Roy & William Morris
Spatial gradients in population growth, such as across latitudinal or elevational gradients, are often assumed to primarily be driven by variation in climate, and are frequently used to infer species’ responses to climate change. Here, we use a novel demographic, mixed model approach to dissect the contributions of climate variables vs. other latitudinal or local site effects on spatiotemporal variation in population performance in three perennial bunchgrasses. For all three species, we find that performance...

Vascular plant community data for Northwest Territories, Canada

Jennifer Baltzer, Nicola Day, Alison White, Kirsten Reid, Geneviève Degré-Timmons, Steve Cumming, Michelle Mack, Merritt Turetsky, Xanthe Walker & Jill Johnstone
Climate change is altering disturbance regimes outside of historical norms, which can impact biodiversity by selecting for plants with particular traits. The relative impact of disturbance characteristics on plant traits and community structure may be mediated by environmental gradients. We aimed to understand how wildfire impacted understory plant communities and plant regeneration strategies along gradients of environmental conditions and wildfire characteristics in boreal forests. We established 207 plots (60m2) in recently burned stands and 133...

Data from \"2020 State of Open at the University of Colorado Boulder\" Report

Andrew Johnson, Ryan Caillet & Melissa Cantrell
Data from the "2020 State of Open at the University of Colorado Boulder" report, including CSV files containing data about all articles published in full open access (OA) journals by University of Colorado Boulder (CU Boulder) authors in 2019, all articles funded by the CU Boulder Libraries Open Access Fund from 2013 to 2019, and all published data sets reported by CU Boulder faculty members in the Faculty Report of Professional Activities from 2014 to...

CMIP3 Zonal Velocity Volumes Near the Equator (3°S–3°N, 160°E–80°W, 0–400 m)

Kristopher Karnauskas
ROGER was an NSF-funded project from 2012–2016 (OCE–1233282 and OCE–1232971). This page provides access to the data analyzed in the following publication: Karnauskas, K. B., J. Jakoboski, T. M. S. Johnston, W. B. Owens, D. L. Rudnick, and R. E. Todd (2020) The Pacific Equatorial Undercurrent in Three Generations of Global Climate Models and Glider Observations. J. Geophys. Res.–Oceans, in revision. As described in the paper, all CMIP3, CMIP5 and CMIP6 global climate model outputs...

CMIP6 Salinity Sections Along 93°W (3°S–3°N, 0–500 m)

Kristopher Karnauskas
This data set is part of the larger Repeat Observations by Gliders in the Equatorial Region (ROGER) data set available here: https://doi.org/10.25810/pk4z-n050. ROGER was an NSF-funded project from 2012–2016 (OCE–1233282 and OCE–1232971). This page provides access to the data analyzed in the following publication: Karnauskas, K. B., J. Jakoboski, T. M. S. Johnston, W. B. Owens, D. L. Rudnick, and R. E. Todd (2020) The Pacific Equatorial Undercurrent in Three Generations of Global Climate Models...

Data used for 2002-2019 spotted knapweed research

Timothy Seastedt
Data documentation required for submission of manscript, "Decadal response of the wicked weed of the West, spotted knapweed, Centaurea stoebe, to multiple biological control agents.

Guidelines for including bamboos in tropical ecosystem monitoring

Belen Fadrique, Joseph Veldman, James Dalling, Lynn Clark, Lia Montti, Eduardo Ruiz-Sanchez, Debora Rother, Francisca Ely, William Farfan-Rios, Paul Gagnon, Juan Carlos Camargo Garcia, Sonali Saha, Thomas Veblen, Ximena Londoño, Kenneth Feeley & Cara Rockwell
Bamboos are a diverse and ecologically important group of plants that have the potential to modulate the structure, composition and function of forests. With the aim of increasing the visibility and representation of bamboo in forest surveys, and to standardize techniques across ecosystems, we present a protocol for bamboo monitoring in permanent research plots. A bamboo protocol is necessary because measurements and sampling schemes that are well-suited to trees are inadequate for monitoring most bamboo...

Phylogenomic data reveal widespred introgression across the range of an alpine and arctic specialist

Erik Funk, Garth Spellman, Kevin Winker, Jack Withrow, Erika Zavaleta, Kristen Ruegg & Scott Taylor
Understanding how gene flow affects population divergence and speciation remains challenging. Differentiating one evolutionary process from another can be difficult because multiple processes can produce similar patterns, and more than one process can occur simultaneously. While simple population models produce predictable results, how these processes balance in taxa with patchy distributions and complicated natural histories is less certain. These types of populations might be highly connected through migration (gene flow), but can experience stronger effects...

Exploring dynamical phase transitions with a Cavity-QED platform

Juan Andres Muniz Silva, Diego Barberena, Robert J. Lewis-Swan, Dylan J. Young, Julia R. K. Cline, Ana Maria Rey & James K. Thompson
Atom-light interactions in optical cavities provide a platform for investigating many-body quantum physics in controlled environments. In particular, they have been proposed for the realization of collective quantum spin models with tunable long-range interactions. Besides the investigation of the rich steady-state phases that can arise due to the interplay between atom-light interactions and dissipation from the cavity, one opportunity offered by these systems is the study of out-of-equilibrium dynamical phases of matter precluded from existence...

Data from: Stasis of functionally versatile specialists

Miriam L. Zelditch, Jingchun Li & Donald L. Swiderski
A classic hypothesis posits that lineages exhibiting long-term stasis are broadly adapted generalists that remain well-adapted despite environmental change. However, lacking constraints that steepen adaptive peaks and stabilize the optimum, generalists’ phenotypes might drift around a broad adaptive plateau. We propose that stasis would be likely for morphological specialists that behave as ecological generalists much of the time because specialists’ functional constraints stabilize the optimum, but those with a broad niche can, like generalists, persist...

Dynamic shifts in social network structure and composition within a breeding hybrid population

David Zonana, Jennifer Gee, Michael Breed & Daniel Doak
1. Mating behavior and the timing of reproduction can inhibit genetic exchange between closely related species; however, these reproductive barriers are challenging to measure within natural populations. Social network analysis provides promising tools for studying the social context of hybridization, and the exchange of genetic variation, more generally. 2. We test how social networks within a hybrid population of California (Callipepla californica) and Gambel’s quail (Callipepla gambelii) change over discrete periods of a breeding season....

Modeling cannabinoids from a large-scale sample of Cannabis sativa chemotypes

Daniela Vergara, Reggie Gaudino, Thomas Blank & Brian Keegan
The widespread legalization of Cannabis has opened the industry to using contemporary analytical techniques for chemotype analysis. Chemotypic data has been collected on a large variety of oil profiles inherent to the cultivars that are commercially available. The unknown gene regulation and pharmacokinetics of dozens of cannabinoids offer opportunities of high interest in pharmacology research. Retailers in many medical and recreational jurisdictions are typically required to report chemical concentrations of at least some cannabinoids. Commercial...

Data from: A synthesis of the effects of cheatgrass invasion on U.S. Great Basin carbon storage

R Chelsea Nagy, Emily Fusco, Jennifer Balch, John Finn, Adam Mahood, Jenica Allen & Bethany Bradley
Non-native, invasive Bromus tectorum (cheatgrass) is pervasive in sagebrush ecosystems in the Great Basin ecoregion of the western U.S., competing with native plants and promoting more frequent fires. As a result, cheatgrass invasion likely alters carbon (C) storage in the region. Many studies have measured C pools in one or more common vegetation types: native sagebrush, invaded sagebrush, and cheatgrass-dominated (often burned) sites, but these results have yet to be synthesized. We performed a literature...

Data from: An isolated white-tailed deer (Odocoileus virginianus) population on St. John, US Virgin Islands shows low inbreeding and comparable heterozygosity to other larger populations

Scott Taylor, Suzanne Nelson & Jon Reuter
This is the first study to document the genetic diversity of the white-tailed deer population on St. John, US Virgin Islands. The island population was founded by a small number of animals, has very limited hunting or predation, and recently experienced a reduction in size following an extended drought in 2015. DNA samples were collected from hair from 23 anesthetized adult deer (13 males, 10 females) ranging in age from 1-8 years (3.36+ 1.9 yr)...

The impact of urbanization on body size of Barn Swallows Hirundo rustica gutturalis

Yanyan Zhao, Yu Liu, Elizabeth Scordato, Myung-Bok Lee, Xiaoying Xing, Xinyuan Pan, Yang Liu, Rebecca Safran & Emilio Pagani-Núñez
Urbanization implies a dramatic impact on ecosystems, which may lead to drastic phenotypic differences between urban and non-urban individuals. For instance, urbanization is associated with increased metabolic costs, which may constrain body size, but urbanization also leads to habitat fragmentation, which may favour increases in body mass when for instance it correlates with dispersal capacity. However, this apparent contradiction has rarely been studied. This is particularly evident in China where the urbanization process is currently...

Data from: Body temperature, heart rate, and activity patterns of two boreal homeotherms in winter: homeostasis, allostasis, and ecological coexistence

Allyson Menzies, Emily Studd, Yasmine Majchrzak, Michael Peers, Stan Boutin, Ben Dantzer, Jeffrey Lane, Andrew McAdam & Murray Humphries
Organisms survive environmental variation by combining homeostatic regulation of critical states with allostatic variation of other traits, and species differences in these responses can contribute to coexistence in temporally-variable environments. In this paper, we simultaneously record variation in three functional traits – body temperature (Tb), heart rate, and activity - in relation to three forms of environmental variation – air temperature (Ta), photoperiod, and experimentally-manipulated resource levels – in free-ranging snowshoe hares and North American...

Disease's hidden death toll: Using parasite aggregation patterns to quantify landscape-level host mortality in a wildlife system

Mark Wilber, Cheryl Briggs & Pieter Johnson
Worldwide, infectious diseases represent a major source of mortality in humans and livestock. For wildlife populations, disease-induced mortality is likely even greater, but remains notoriously difficult to estimate -- especially for endemic infections. Approaches for quantifying wildlife mortality due to endemic infections have historically been limited by an inability to directly observe wildlife mortality in nature. Here, we address a question that can rarely be answered for endemic pathogens of wildlife: what are the population-...

Adaptation to viscous Snowball Earth Oceans is a path to complex multicellularity

Carl Simpson
Animals, fungi, and algae with complex multicellular bodies all evolved independently from unicellular ancestors. The early history of these major eukaryotic multicellular clades, if not their origins, co-occur with an extreme phase of global glaciations known as the Snowball Earth. Here, I propose that the long-term loss of low viscosity environments due to several rounds global glaciation drove the multiple origins of complex multicellularity in eukaryotes and the subsequent radiation of complex multicellular groups. Under...

Data from: Translocation with targeted vaccination is the most effective strategy to protect an island endemic bird threatened by West Nile virus

Victoria Bakker, T. Sillett, Walter Boyce, Daniel Doak, T. Winston Vickers, William Reisen, Brian Cohen, Michael Hallworth & Scott Morrison
Aim Invasive pathogens are a growing conservation challenge and often occur in tandem with rapid environmental transformation, such as climate change, drought, and habitat loss. Climate change appears to have facilitated the spread of West Nile virus (WNV), a cause of widespread avian mortality. WNV is considered the primary threat to island scrub-jays (Aphelocoma insularis), endemic to Santa Cruz Island, California. Two approaches have been proposed to safeguard island scrub-jays: (1) vaccination and (2) conservation...

Identifying functional impacts of heat-resistant fungi on boreal forest recovery after wildfire

Nicola Day, Steve Cumming, Kari Dunfield, Jill Johnstone, Michelle Mack, Kirsten Reid, Merritt Turetsky, Xanthe Walker & Jennifer Baltzer
Fungi play key roles in carbon (C) dynamics of ecosystems: saprotrophs decompose organic material and return C in the nutrient cycle, and mycorrhizal species support plants that accumulate C through photosynthesis. The identities and functions of extremophile fungi present after fire can influence C dynamics, particularly because plant-fungal relationships are often species-specific. However, little is known about the function and distribution of fungi that survive fires. We aim to assess the distribution of heat-resistant soil...

Murine polyomavirus DNA transitions through spatially distinct nuclear replication subdomains during infection

Douglas Peters & Robert Garcea
The replication of small DNA viruses requires both host DNA replication and repair factors that are often recruited to subnuclear domains termed viral replication centers (VRCs). Aside from serving as a spatial focus for viral replication, little is known about these dynamic areas in the nucleus. We investigated the organization and function of VRCs during murine polyomavirus (MuPyV) infection using 3D structured illumination microscopy (3D-SIM). We localized MuPyV replication center components, such as the viral...

Registration Year

  • 2020

Resource Types

  • Dataset


  • University of Colorado Boulder
  • Northern Arizona University
  • Wilfrid Laurier University
  • University of Michigan-Ann Arbor
  • University of Saskatchewan
  • Oklahoma State University
  • University of Nevada Reno
  • Auckland University of Technology
  • Montana State University
  • Cornell University