50 Works

Population Receptive Field (PRF) Surface Viewer

White Matter Tractography Viewer

Data from: Bee phenology is predicted by climatic variation and functional traits

Michael Stemkovski, Will Pearse, Sean Griffin, Gabriella Pardee, Jason Gibbs, Terry Griswold, John Neff, Ryan Oram, Molly RightMyer, Cory Sheffield, Karen Wright, Brian Inouye, David Inouye & Rebecca Irwin
Climate change is shifting the environmental cues that determine the phenology of interacting species. Plant-pollinator systems may be susceptible to temporal mismatch if bees and flowering plants differ in their phenological responses to warming temperatures. While the cues that trigger flowering are well-understood, little is known about what determines bee phenology. Using Generalized Additive Models, we analyzed time-series data representing 67 bee species collected over nine years in the Colorado Rocky Mountains to perform the...

Historical biogeography of Vochysiaceae reveals an unexpected perspective of plant evolution in the Neotropics

Deise Josely Pereira Goncalves, Gustavo H. Shimizu, Edgardo M. Ortiz, Robert K. Jansen & Beryl B. Simpson
PREMISE OF THE STUDY: Despite the fast pace of exploration of the patterns and processes influencing Neotropical plant hyperdiversity, taxa explored are mostly from large groups that are widely distributed, morphologically diverse or economically important. Vochysiaceae is an example of an undersampled taxon, providing an excellent system for investigating Neotropical biogeography. We present a phylogenomic-based hypothesis of species relationships in Vochysiaceae to investigate its evolutionary history through space and time. METHODS: We inferred a phylogeny...

Data from: Recurrent circuit dynamics underlie persistent activity in the macaque frontoparietal network

Eric Hart & Alexander Huk
During delayed oculomotor response tasks, neurons in the lateral intraparietal area (LIP) and the frontal eye fields (FEF) exhibit persistent activity that reflects the active maintenance of behaviorally relevant information. Despite many computational models of the mechanisms of persistent activity, there is a lack of circuit-level data from the primate to inform the theories. To fill this gap, we simultaneously recorded ensembles of neurons in both LIP and FEF while macaques performed a memory-guided saccade...

Data from: A new dissorophoid temnospondyl from the Allegheny Group (Late Westphalian, Carboniferous) of Five Points, Mahoning County, Ohio (USA)

Rainer Schoch, Amy Henrici & Robert Hook
A small temnospondyl skull from the Upper Carboniferous Allegheny Group of Five Points, Ohio, is referred to a new dissorophoid, Palodromeus bairdi n. gen n. sp. The complete skull with mandibles is preserved in counterparts. It is characterized by (1) elongated slit-like choana, (2) postfrontal, postorbital, and supratemporal bearing a distinct ridge, and (3) reduced parietal only two-thirds the length of the frontal. Phylogenetic analysis confirms a dichotomy between amphibamiforms and olsoniforms and places Palodromeus...

Does breeding season variation affect evolution of a sexual signaling trait in a tropical lizard clade?

Levi Gray, Anthony Barley, David Hillis, Carlos Pavón-Vázquez, Steven Poe & Brittney White
Sexually selected traits can be expected to increase in importance when the period of sexual behavior is constrained, such as in seasonally restricted breeders. Anolis lizard male dewlaps are classic examples of multifaceted signaling traits, with demonstrated intraspecific reproductive function reflected in courtship behavior. Fitch and Hillis found a correlation between dewlap size and seasonality in mainland Anolis using traditional statistical methods. Here, we present two tests of the Fitch-Hillis Hypothesis using new phylogenetic and...

Cassowary gloss and a novel form of structural color in birds

Chad Eliason & Julia Clarke
One of the two lineages of extant birds resulting from its deepest split, Palaeognathae, has been reported not to exhibit structural coloration in feathers, affecting inferences of ancestral coloration mechanisms in extant birds. Structural coloration in facial skin and eggshells have been shown in the lineage, but not feathers. Here, we report the first evidence for two distinct mechanisms of structural color in palaeognath feathers. One extinct volant clade, Lithornithidae, shows evidence of elongate melanin-containing...

Reversible Diffusion Weighted Imaging Lesion in Acute Ischemic Stroke – A Systematic Review

Nandakumar Nagaraja, John Forder, Steven Warach & Jośe Merino
Supplemental data: NNagaraja_12292019_DWI_Reversal_In_AIS_Review_Supplemental_File Supplemental Figure e-1: DWI reversal in acute ischemic stroke Supplemental Table e-1: Search Strategy Supplemental Table e-2: Variables extracted for the review Supplemental Table e-3: Imaging protocols for included studies Supplemental Table e-4: DWIR definitions used in the selected studies Supplemental Table e-5: Imaging characteristics of patients Supplemental Table e-6: QUADAS-2 tool for quality assessment of diagnostic accuracy studies by evaluating risk of bias and applicability concerns.

Lost in Translation

Z.W. Taylor
As our world becomes increasingly globalized in social, economic, and political contexts, U.S. students choose to study abroad to develop their international communication skills, cross-cultural competencies, and second or third languages (NAFSA, 2017). However, an under-researched element of the international education enrollment process is how readable and translated international admissions instructions are, especially for language-minority students whose first language is not English, comprising over 92 million people living in the U.S. (Dillinger, 2017). Examining the...

Groundwater recharge in Africa from ground based measurements

Alan MacDonald, Murray Lark, Richard Taylor, Tamiru Abiye, Helen Fallas, Guillaume Favreau, Ibrahim Goni, Seifu Kebede, Bridget Scanlon, James Sorenson, Moshood Tijani, Kirsty Upton & Charles West
This dataset comprises a map of groundwater recharge for Africa and a database of the 134 observations used to generate the map. The map shows long term average annual groundwater recharge in mm per annum relevant to the period 1970 to 2020. It is in the form of a GIS shapefile and is available as a layer package for ESRI and also as a georeferenced TIFF and BIL file for easy exchange with other software....

Switchgrass v5 4-way (AP13 x DAC, WBC x VS16) genetic map

John Lovell, Adam Healey, Jeremy Schmutz & Thomas Juenger
Here we present the genetic map construction methods for the switchgrass 4-way mapping population. The map spans 750 recombinant 4-way (pseudo F2) progeny genotyped at 4700 markers. These data are formatted for simple input into R/qtl and most other QTL mapping programs.

Capillary rise in vuggy porous media

Hasan J Khan, Masa Prodanovic, Ayaz Mehmani, David DiCarlo & Dayeed Khan
Capillary rise in vuggy porous media

Natural enemy-herbivore networks along local management and landscape gradients in urban agroecosystems

Stacy Philpott, Azucena Lucatero, Peter Bichier, Monika Egerer, Shalene Jha, Brenda Lin & Heidi Liere
Ecological networks can provide insight into how biodiversity loss and changes in species interactions impact the delivery of ecosystem services. In agroecosystems that vary in management practices, quantifying changes in ecological network structure across gradients of local and landscape composition can inform both the ecology and function of productive agroecosystems. In this study, we examined natural enemy-herbivore co-occurrence networks associated with Brassica oleracea (cole crops), a common crop in urban agricultural systems. Specifically, we investigated...

Mudrock images from Nankai Trough

Abhishek Bihani, Hugh Daigle, Masa Prodanovic, Kitty Milliken & Javier E. Santos
An image analysis workflow was used to study the electron microscopy images of uncemented muds obtained at various depths (< 1.1 km burial) in the Kumano Basin of Nankai Trough offshore Japan for studying the silt bridging phenomenon. Forty-nine images from five core samples at different depths of Site C0002 obtained during Integrated Ocean Drilling Program (IODP) Expeditions 315 and 338 were used for the study. The original image set can be found at https://www.digitalrocksportal.org/projects/42....

Data from: Terrestrial evaporation and global climate: lessons from Northland, a planet with a hemispheric continent

Marysa M. Lague, Marianne Pietschnig, Sarah Ragen, Timothy A. Smith & David S. Battisti
Motivated by the hemispheric asymmetry of land distribution on Earth, we explore the climate of Northland, a highly idealized planet with a Northern Hemisphere continent and a Southern Hemisphere ocean. The climate of Northland can be separated into four distinct regions: the Southern Hemisphere ocean, the seasonally wet tropics, the mid-latitude desert, and the Great Northern Swamp. We evaluate how modifying land surface properties on Northland drives changes in temperatures, precipitation patterns, the global energy...

Data from: Multiple constraints cause positive and negative feedbacks limiting grassland soil CO2 efflux under CO2 enrichment

Philip Fay, Dafeng Hui, Robert Jackson, Harold Collins, Lara Reichmann, Michael Aspinwall, Virginia Jin, Albina Khasanova, Robert Heckman & Wayne Polley
Terrestrial ecosystems are increasingly enriched with resources such as atmospheric CO2 that limit ecosystem processes. The consequences for ecosystem carbon cycling depend on the feedbacks from other limiting resources and plant community change, which remain poorly understood for soil CO2 efflux, JCO2, a primary carbon flux from the biosphere to the atmosphere. We applied a unique CO2 enrichment gradient (250 to 500 µL L-1) for eight years to grassland plant communities on soils from different...

Data from: Exploring genomic variation associated with drought stress in Picea mariana populations

Joseph Napier, Guillaume De Lafontaine & Feng Sheng Hu
Predicted increases in drought and heat stress will likely induce shifts in species bioclimatic envelopes. Genetic variants adapted to water limitation may prove pivotal for species response under scenarios of increasing drought. In this study, we aimed to explore this hypothesis by investigating genetic variation in 16 populations of black spruce (Picea mariana) in relation to climate variables in Alaska. A total of 520 single nucleotide polymorphisms (SNPs) were genotyped for 158 trees sampled from...

Data from: Dynamics of diet-egg transfer of fatty acids in the teleost fish, red drum (Sciaenops ocellatus)

Zhenxin Hou, Cynthia Faulk & Lee Fuiman
Eggs of marine organisms are increasingly being recognized as important components of marine food webs. The degree to which egg fatty acid profiles reflect maternal diet fatty acid profiles, and therefore the value of fatty acids in eggs as trophic biomarkers, depends on the species’ reproductive strategy and the extent of modification of ingested fatty acids. We measured the dynamics of transfer of recently ingested fatty acids to spawned eggs in a batch-spawning teleost, red...

Microhabitat contributes to microgeographic divergence in threespine stickleback

Meghan Maciejewski, Cynthia Jiang, Yoel Stuart & Daniel Bolnick
Since the New Synthesis, most migration-selection balance theory predicted that there should be negligible differentiation over small spatial scales (relative to dispersal), because gene flow should erode any effect of divergent selection. Nevertheless, there are classic examples of microgeographic divergence, which theory suggests can arise under specific conditions: exceptionally strong selection, phenotypic plasticity in philopatric individuals, or non-random dispersal. Here, we present evidence of microgeographic morphological variation within lake and stream populations of threespine stickleback...

Data from: Evaluating Sphagnum traits in the context of resource economics and optimal partitioning theories

Tobi Oke & Merritt R. Turetsky
Trade-offs between key aspects of plant performance such as resource acquisition and allocation underpin several trait-based theories that have been derived for vascular plants. However, due to difficulty in quantifying traits in nonvascular plants, our theoretical understanding of how traits govern the physiological and ecological preferences of nonvascular plant species is quite limited. Here, we used the resource economics theory (RET) and optimal partitioning theory (OPT) to evaluate functional traits in mosses. We evaluated aspects...

Dataset for the transcriptome analysis of hippocampal subfields identifies gene expression profiles associated with long-term active place avoidance memory

Rayna Harris, Hsin-Yi Kao, Juan Marcos Alarcon, André Fenton & Hans Hofmann
The hippocampus plays a critical role in storing and retrieving spatial information. By targeting the dorsal hippocampus and manipulating specific “candidate” molecules using pharmacological and genetic manipulations, we have previously discovered that long-term active place avoidance memory requires transient activation of particular molecules in dorsal hippocampus. These molecules include amongst others, the persistent kinases Ca-calmodulin kinase II (CaMKII) and the atypical protein kinase C isoform PKC iota/lambda for acquisition of the conditioned behavior, whereas persistent...

Data from: Plant biomass, not plant economics traits, determines responses of soil CO2 efflux to precipitation in the C4 grass Panicum virgatum

Robert Heckman, Albina Khasanova, Nicholas Johnson, Sören Weber, Jason Bonnette, Mike Aspinwall, Lara Reichman, Thomas Juenger, Philip Fay & Christine Hawkes
1. Plant responses to major environmental drivers like precipitation can influence important aspects of carbon (C) cycling like soil CO2 efflux (JCO2). These responses may be predicted by two independent classes of drivers: plant size—larger plants respire more and produce a larger quantity of labile C, and plant economics—plants possessing more acquisitive plant economics strategies (i.e., high metabolic rate and tissue nutrient content) produce higher-quality tissue that respires rapidly and decomposes quickly. 2. At two...

No evidence for neonicotinoid preferences in the bumblebee Bombus impatiens

Felicity Muth
Neonicotinoid pesticides can have a multitude of negative sub-lethal effects on bees. Understanding their impact on wild populations requires accurately estimating the dosages bees encounter under natural conditions. This is complicated by the possibility that bees might influence their own exposure: two recent studies found that bumblebees (Bombus terrestris) preferentially consumed neonicotinoid-contaminated nectar, even though these chemicals are thought to be tasteless and odourless. Here we used Bombus impatiens to explore two elements of these...

7,000 years of turnover: historical contingency and human niche construction shape the Caribbean’s Anthropocene biota

Melissa Kemp, Alexis Mychajliw, Jenna Wadman & Amy Goldberg
The human-mediated movement of species across biogeographic boundaries—whether intentional or accidental—is dramatically reshaping the modern world. Conservation biologists are grappling with the present-day effects of these introductions, but humans have in fact been reshaping ecosystems and translocating species for millennia. Acknowledging the effects of human-mediated species introductions through time is important for understanding present-day biodiversity loss, ecosystem functioning, and management needs. Here, we present the first database of terrestrial vertebrate species introductions spanning the entire...

Registration Year

  • 2020

Resource Types

  • Dataset
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  • The University of Texas at Austin
  • Indiana University
  • Stanford University
  • New York University
  • Texas A&M University
  • Georgetown University
  • Agricultural Research Service
  • University of Florida
  • University of Illinois at Urbana Champaign
  • Université du Québec à Rimouski