12 Works

Do selfing species have greater niche breadth? Support from ecological niche modeling

Alannie-Grace Gabrielle Grant
We explore the relationship between plant mating system (selfing or outcrossing) and niche breadth to gain new insights into processes that drive species distributions. Using a comparative approach with highly selfing versus highly outcrossing sister species, we test the extent to which: (1) species pairs have evolved significant niche divergence and less niche overlap, (2) selfers have wider niche breadths than outcrossers or vice versa, and (3) niches of selfers and outcrossers are defined by...

Data from: Phenological mismatch with trees reduces wildflower carbon budgets

J. Mason Heberling, Caitlin McDonough MacKenzie, Jason D. Fridley, Susan Kalisz & Richard B. Primack
Interacting species can respond differently to climate change, causing unexpected consequences. Many understory wildflowers in deciduous forests leaf out and flower in the spring when light availability is highest before overstory canopy closure. Therefore, different phenological responses by understory and overstory species to increased spring temperature could have significant ecological implications. Pairing contemporary data with historical observations initiated by Henry David Thoreau (1850s), we found that overstory tree leaf out is more responsive to increased...

Data from: Preservation-induced morphological change in salamanders and failed DNA extraction from a decades-old museum specimen: implications for Plethodon ainsworthi

Todd Pierson, Troy Kieran, Adam Clause & Nikole Castleberry
Natural history collections are important data repositories, but different chemical treatments of specimens can influence morphological measurements and DNA extraction, complicating taxonomic and conservation decisions dependent upon these data. One such example is the Bay Springs Salamander (Plethodon ainsworthi), the only United States amphibian categorized as Extinct by the IUCN. Recent research has proposed that P. ainsworthi is an invalid taxon, arguing that the 55-year-old type specimens’ morphological distinctiveness from syntopic P. mississippi is a...

Radio-tracking reveals insight into survival and dynamic habitat selection of fledgling Cerulean Warblers

Douglas Raybuck, Scott Stoleson, Jeffery Larkin & Than Boves
The Cerulean Warbler is a declining Nearctic-Neotropical migrant species of concern that breeds in hardwood forests of the eastern United States and Canada. While much knowledge has been gained about the nesting period of this canopy species, little is known about the post-fledging period. During the 2014 and 2015 breeding seasons, after locating and monitoring nests within a matrix of habitat conditions created by various forest management strategies in NW Pennsylvania, USA, we captured fledglings...

Data from: Genetic diversity and conservation status of Helianthus verticillatus, an endangered sunflower of the Southern United States

Tyler Edwards, Robert Trigiano, Bonnie Ownley, Alan Windham, Christopher Wyman, Phillip Wadl & Denita Hadziabdic
Evaluating species diversity and patterns of population genetic variation is an essential aspect of conservation biology to determine appropriate management strategies and preserve the biodiversity of native plants. Habitat fragmentation and potential habitat loss are often an outcome of a reduction in naturally occurring wildfires and controlled prescribed burning, as seen in Helianthus verticillatus (whorled sunflower). This endangered, wild relative of the common sunflower, Helianthus annuus, is endemic to four locations in Alabama, Georgia, and...

Data from: Plant host identity and soil macronutrients explain little variation in sapling endophyte community composition: is disturbance an alternative explanation?

Eric A. Griffin, Joshua G. Harrison, Steven W. Kembel, Alyssa A. Carrell, S. Joseph Wright & Walter P. Carson
1. Bacterial endophytes may be fairly host specific; nonetheless, an important subset of taxa may be shared among numerous host species forming a community-wide core microbiome. Moreover, other key factors, particularly the supply of limiting macronutrients and disturbances, may supersede the importance of host identity. 2. We tested the following four non-mutually exclusive hypotheses: 1. The Host Identity Hypothesis: endophytes vary substantially among different host plant species. 2. The Core Microbiome Hypothesis: a subset of...

Data from: Earth history and the passerine superradiation

Carl H. Oliveros, Daniel J. Field, Daniel T. Ksepka, F. Keith Barker, Alexandre Aleixo, Michael J. Andersen, Per Alström, Brett W. Benz, Edward L. Braun, Michael J. Braun, Gustavo A. Bravo, Robb T. Brumfield, R. Terry Chesser, Santiago Claramunt, Joel Cracraft, Andrés M. Cuervo, Elizabeth P. Derryberry, Travis C. Glenn, Michael G. Harvey, Peter A. Hosner, Leo Joseph, Rebecca T. Kimball, Andrew L. Mack, Colin M. Miskelly, A. Townsend Peterson … & Brant C. Faircloth
Avian diversification has been influenced by global climate change, plate tectonic movements, and mass extinction events. However, the impact of these factors on the diversification of the hyperdiverse perching birds (passerines) is unclear because family level relationships are unresolved and the timing of splitting events among lineages is uncertain. We analyzed DNA data from 4,060 nuclear loci and 137 passerine families using concatenation and coalescent approaches to infer a comprehensive phylogenetic hypothesis that clarifies relationships...

Data from: Research data sharing: practices and attitudes of geophysicists

Carol Tenopir, Lisa Christian, Suzie Allard & Josh Borycz
Open data policies have been introduced by governments, funders, and publishers over the past decade. Previous research showed a growing recognition by scientists of the benefits of data-sharing and reuse, but actual practices lag and are not always compliant with new regulations. The goal of this study is to investigate motives, attitudes, and data practices of the community of earth and planetary geophysicists, a discipline believed to have accepting attitudes towards data sharing and reuse....

Scholarly Seeking, Reading, and Use Behaviors dataset

Carol Tenopir, Lisa Christian & Jordan Kaufman
While journal articles are still considered the most important sources of scholarly reading, libraries may no longer have a monopoly on providing discovery and access. Many other sources of scholarly information are available to readers. This international study examines how researchers discover, read, and use scholarly literature for their work. Respondents in 2018 report an average of almost 20 article readings a month and there are still significant differences found in the reading and use...

Data from: Experimental evidence of frequency-dependent selection on group behaviour

Jonathan N. Pruitt, Brendan L. McEwen, Steven T. Cassidy, Gabriella M. Najm & Noa Pinter-Wollman
Evolutionary ecologists often seek to identify the mechanisms maintaining intraspecific variation. In social animals, whole groups can exhibit between-group differences in their collective traits. We examined whether negative frequency-dependent selection (i.e., a rare-type advantage) could help to maintain between-group variation. We engineered neighborhoods of social spider colonies bearing bold or shy foraging phenotypes and monitored their fecundity in situ. We found that bold colonies enjoyed a rare-type advantage that is lost as the frequency of...

Data from: Megaphylogeny resolves global patterns of mushroom evolution

Torda Varga, Krisztina Krizsán, Csenge Földi, Bálint Dima, Marisol Sánchez-García, Santiago Sánchez-Ramírez, Gergely J. Szöllősi, János G. Szarkándi, Viktor Papp, László Albert, William Andreopoulos, Claudio Angelini, Vladimír Antonín, Kerrie W. Barry, Neale L. Bougher, Peter Buchanan, Bart Buyck, Viktória Bense, Pam Catcheside, Mansi Chovatia, Jerry Cooper, Wolfgang Dämon, Dennis Desjardin, Péter Finy, József Geml … & László G. Nagy
Mushroom-forming fungi (Agaricomycetes) have the greatest morphological diversity and complexity of any group of fungi. They have radiated into most niches and fulfill diverse roles in the ecosystem, including wood decomposers, pathogens or mycorrhizal mutualists. Despite the importance of mushroom-forming fungi, large-scale patterns of their evolutionary history are poorly known, in part due to the lack of a comprehensive and dated molecular phylogeny. Here, using multigene and genome-based data, we assemble a 5,284-species phylogenetic tree...

Data from: Quantitative heterodonty in Crocodylia: variability and decoupling in size and shape across modern and extinct taxa.

Domenic C. D'Amore, Megan Harmon, Stephanie K. Drumheller & Jason J. Testin
Heterodonty in Crocodylia and closely related taxa has not been defined quantitatively, as the teeth rarely have been measured. This has resulted in a range of qualitative descriptors, with little consensus on the condition of dental morphology in the clade. The purpose of this study is to present a method for the quantification of both size- and shape-heterodonty in members of Crocodylia. Data were collected from dry skeletal and fossil specimens of 34 crown crocodylians...

Registration Year

  • 2019

Resource Types

  • Dataset


  • University of Tennessee at Knoxville
  • University of Georgia
  • University of Kansas
  • University of Bath
  • Arkansas State University
  • University of Buenos Aires
  • Daemen College
  • Natural History Museum of Los Angeles County
  • Royal Ontario Museum
  • Royal Botanic Gardens