17 Works

Oral cholestyramine prevents the enrichment of diverse daptomycin-resistance mutations in intestinal Enterococcus faecium populations

Valerie Morley
Background and Objectives: Previously, we showed proof-of-concept in a mouse model that oral administration of cholestyramine prevented enrichment of daptomycin-resistant Enterococcus faecium in the gastrointestinal (GI) tract during daptomycin therapy. Cholestyramine binds daptomycin in the gut, which removes daptomycin selection pressure and so prevents the enrichment of resistant clones. Here, we investigated two open questions related to this approach: 1) can cholestyramine prevent the enrichment of diverse daptomycin mutations emerging de novo in the gut?...

Proximate and evolutionary sources of variation in offspring energy expenditure in songbirds

Adam Mitchell, Blair Wolf & Thomas Martin
Aim: Understanding variation in offspring energy expenditure is important because energy is critical for growth and development. Weather may exert proximate effects on offspring energy expenditure, but in altricial species these might be masked by parental care and huddling with siblings. Such effects are particularly important to understand given changing global weather patterns, yet studies of wild offspring in the presence of parental care are lacking. Offspring energy expenditure may also vary among species due...

Data from: Tree growth responses to extreme drought after mechanical thinning and prescribed fire in a Sierra Nevada mixed-conifer forest, USA

Harold Zald, Chance Callahan, Matthew Hurteau, Marissa Goodwin & Malcolm North
An estimated 128 M trees died during the 2012-2016 California drought, largely in the southern Sierra Nevada Range. Prescribed burning and mechanical thinning are widely used to reduce fuels and restore ecosystem properties, but it is unclear if these treatments improve tree growth and vigor during extreme drought. This study examined tree growth responses after thinning, prescribed burning, and extreme drought at the Teakettle Experimental Forest, a historically frequent fire mixed-conifer forest in the southern...

Amino acid d13C dataset for nearshore marine primary producers

Emma Elliott Smith, Michael Fox, Marilyn Fogel & Seth Newsome
Carbon isotope fingerprinting, or multivariate analysis using δ13C values of individual compounds, is a powerful tool in ecological studies, particularly measurements of essential amino acids (EAA δ13C). Despite the widespread application of this technique, there has been little methodological validation to determine (1) whether multivariate EAA δ13C signatures (fingerprints) of primary producer groups vary across space and time, and (2) what biochemical mechanisms drive these patterns. Here, we evaluate the spatiotemporal consistency in EAA δ13C...

Data from: Demography predicts genetic effective size in a desert stream fish community

Tyler Pilger
Demographic data collected during long-term diversity monitoring and short-term ecological surveys were used to calculate summary statistics to compare with estimates of genetic effective size for nine species occurring in the Gila River, New Mexico, USA. Diversity survey data collected by New Mexico Department of Game and Fish from 1988 to 2010 were converted to presence/absence data to create detection histories for each of the nine focal species. Simple occupancy models of detection histories implemented...

Wallacean and Melanesian islands promote higher rates of diversification within the global passerine radiation Corvides: Supplementary information

Jenna McCullough, Carl Oliveros, Brett Benz, Rosana Zenil-Ferguson, Joel Cracraft, Robert Moyle & Michael Andersen
The complex island archipelagoes of Wallacea and Melanesia have provided empirical data behind integral theories in evolutionary biology, including allopatric speciation and island biogeography. Yet, questions regarding the relative impact of the layered biogeographic barriers, such as deep-water trenches and isolated island systems, on faunal diversification remain underexplored. One such barrier is Wallace’s Line, a significant biogeographic boundary that largely separates Australian and Asian biodiversity. To assess the relative roles of biogeographic barriers—specifically isolated island...

Core Characteristics of Learning Resource Collectors

Nancy J. Hoebelheinrich, Elizabeth Newbold, Angus Whyte, Maria Johnsson, Kerstin Helbig, Margareta Hellström, Iryna Kuchma & Mijke Jetten
As part of the Education And Training On Handling Of Research Data IG (ETHRD-IG) activities, the Learning Resource Collectors Focus Group studied the evolving landscape of learning resources on RDM topics. As we collected and listed a snapshot of current catalogues or registries of learning resources for review, we realized that a set of core characteristics could describe these types of organisations that would be useful to help people evaluate and understand the resources they...

Genetic confirmation of a hybrid between two highly divergent cardinalid species: A Rose-breasted Grosbeak (Pheucticus ludovicianus) and a Scarlet Tanager (Piranga olivacea)

David Toews, Tessa Rhinehart, Robert Mulvihill, Spencer Galen, Stephen Gosser, Tom Johnson, Jessie Williamson, Andrew Wood & Steven Latta
Using low-coverage whole-genome sequencing, analysis of vocalizations, and inferences from natural history, we document a first-generation hybrid between a rose-breasted grosbeak (Pheucticus ludovicianus) and a scarlet tanager (Piranga olivacea). These two species occur sympatrically throughout much of eastern North America, although were not previously known to interbreed. Following the field identification of a putative hybrid, we use genetic and bioacoustic data to show that a rose-breasted grosbeak was the maternal parent and a scarlet tanager...

Does scent attractiveness reveal women’s ovulatory timing? Evidence from signal detection analyses and endocrine predictors of odor attractiveness

James Roney, Mei Mei, Rachel Grillot, Craig Abbey, Melissa Emery Thompson & James Roney
Odor cues associated with shifts in ovarian hormones indicate ovulatory timing in females of many nonhuman species. Although prior evidence supports women’s body odors smelling more attractive on days when conception is possible, that research has left ambiguous how diagnostic of ovulatory timing odor cues are, as well as whether shifts in odor attractiveness are correlated with shifts in ovarian hormones. Here, 46 women each provided 6 overnight scent and corresponding day saliva samples spaced...

Supporting Data for: Assessing the potential of amino acid δ13C and δ15N analysis in terrestrial and freshwater ecosystems

Alexi Besser
Understanding the structure and dynamics of food webs requires accurate estimates of energy flow among organisms. Bulk tissue carbon (δ13C) and nitrogen (δ15N) isotope analysis is often used to this end, however, the limitations of this technique can outweigh the benefits. The isotope analysis of individual amino acids is being increasingly employed to trace energy flow and estimate consumer trophic level. Central to this compound-specific approach are the concepts of essential amino acid (AAESS) δ13C...

Hybrid evolution repeats itself across environmental contexts in Texas sunflowers (Helianthus)

Nora Mitchell, Hoang Luu, Gregory Owens, Loren Rieseberg & Kenneth Whitney
To what extent is evolution repeatable? Little is known about whether the evolution of hybrids is more (or less) repeatable than non-hybrids. We used field experimental evolution in annual sunflowers (Helianthus) in Texas to ask the extent to which hybrid evolution is repeatable across environments compared to non-hybrid controls. We created hybrids between Helianthus annuus (L.) and H. debilis (Nutt.) and grew plots of both hybrids and non-hybrid controls through eight generations at three sites...

Early stages of speciation with gene flow in the Amazilia Hummingbird (Amazilis amazilia) subspecies complex of Western South America

Sarah Cowles, Christopher Witt, Elisa Bonaccorso, Felix Grewe & J. Albert Uy
Disentangling the factors underlying the diversification of geographically variable species with a wide geographical range is essential to understanding the initial stages and drivers of the speciation process. The Amazilia Hummingbird, Amazilis amazilia, is found along the Pacific coast from northern Ecuador down to the Nazca Valley of Peru, and is currently classified as six phenotypically differentiated subspecies. Our aims were to resolve the evolutionary relationships of the six subspecies, to assess the geographical pattern...

Geographic and temporal morphological stasis in the latest Cretaceous ammonoid Discoscaphites iris from the U.S. Gulf and Atlantic Coastal Plains

James Witts, Corinne Myers, Matthew Garb, Kayla Irizarry, Ekaterina Larina, Anastasia Rashkova & Neil Landman
We examine temporal and spatial variation in morphology of the ammonoid cephalopod Discoscaphites iris using a large dataset from multiple localities in the Late Cretaceous (Maastrichtian) of the United States Gulf and Atlantic Coastal Plains, spanning a distance of 2000 km along the paleoshoreline. Our results suggest that the fossil record of D. iris is consistent with no within species net accumulation of phyletic evolutionary change across morphological traits or the lifetime of this species....

A Rigid, Thermally-Isolating Suspension for an ADR

Ruslan Hummatov, Linh N. Le, Felix T. Jaeckel & S. T. P. Boyd

The functional significance of panting as a mechanism of thermoregulation and its relationship to the critical thermal maxima in lizards

Caleb Loughran & Blair Wolf
Because most desert-dwelling lizards rely primarily on behavioral thermoregulation for the maintenance of active body temperatures, the effectiveness of panting as a thermoregulatory mechanism for evaporative cooling has not been widely explored. We measured changes in body temperature (Tb) with increasing air temperature (Ta) for seventeen species of lizards that range across New Mexico and Arizona and quantified the temperatures associated with the onset of panting, the capacity of individuals to depress Tb below Ta...

Islands Within Islands: Bacterial Phylogenetic Structure and Consortia in Hawaiian Lava Caves and Fumaroles

Rebecca Prescott, Tatyana Zamkovaya, Stuart Donachie, Diana Northup, Joseph Mendley, Natalia Monsalve, Jimmy Saw, Alan Decho, Patrick Chain & Penelope Boston
Lava caves, tubes, and fumaroles in Hawai‘i present a range of volcanic, oligotrophic environments from different lava flows and host unexpectedly high levels of bacterial diversity. These features provide an opportunity to study the ecological drivers that structure bacterial community diversity and assemblies in volcanic ecosystems and compare the older, more stable environments of lava tubes, to the more variable and extreme conditions of younger, geothermally active caves and fumaroles. Using 16S rRNA amplicon-based sequencing...

Data for: Modeling the distribution of the endangered Jemez Mountains salamander (Plethodon neomexicanus) in relation to geology, topography, and climate

Andrew Bartlow, J. Tomasz Giermakowski, Paul Neville, Emily Schultz-Fellenz, Brandon Crawford, Anita Lavadie-Bulnes, Brent Thompson & Chuck Hathcock
The Jemez Mountains salamander (Plethodon neomexicanus; hereafter JMS) is an endangered salamander restricted to the Jemez Mountains in north-central New Mexico, United States. This strictly terrestrial species requires moist surface conditions for mating and foraging. Threats to its current habitat include fire suppression and ensuing severe fires, changes in forest composition, habitat fragmentation, and climate change. Forest composition changes resulting from reduced fire frequency and increased tree density suggest that its current aboveground habitat does...

Registration Year

  • 2022

Resource Types

  • Dataset
  • Other


  • University of New Mexico
  • Los Alamos National Laboratory
  • American Museum of Natural History
  • Pennsylvania State University
  • University of Kansas
  • University of Montana
  • Data Archiving and Networked Services
  • Field Museum of Natural History
  • George Washington University
  • Lund University