39 Works

Perspective piece: Comparison of eastern and western North American monarch butterflies

Micah Freedman
Monarch butterflies are a species of conservation priority due to declining overwintering populations in both eastern and western North America. Declines in western overwintering monarchs—more than 99.9% since monitoring began—are especially acute. However, the degree to which western monarchs are a distinct biological entity is uncertain. In this review, we focus on phenotypic and genetic differentiation between eastern and western monarchs, with the goal of informing researchers and policy-makers who are interested in monarch conservation....

Sound velocities and P-V-T data of phase A obtained at GSECARS beamline 13-ID-D

Nao Cai, Xintong Qi, Ting Chen, Siheng Wang, Tony Yu, Yanbing Wang, Toru Inoue, Duojun Wang & Baosheng Li
The sound velocities and lattice parameters for sample in the under review paper, "Enhanced visibility of subduction slabs by the formation of dense hydrous phase A", submitted to the journal 'Geophysical Research Letters', are published. The high pressure and high-temperature experiment was conducted in the 1000-ton Kawai type large volume apparatus (T-25) installed at the GSECARS beamline 13-ID-D of Advanced Photon Source, Argonne National Laboratory. The datasets were obtained at conditions up to 11 GPa...

Testing the utility of alternative metrics of branch support to address the ancient evolutionary radiation of tunas, stromateoids, and allies (Teleostei: Pelagiaria)

Dahiana Arcila, Lily C. Hughes, Fernando Meléndez-Vazquez, Carole C. Baldwin, William T. White, Kent E. Carpenter, Jeffrey T. Williams, Mudjekeewis D. Santos, John J. Pogonoski, Masaki Miya, Guillermo Ortí & Ricardo Betancur-R.
The use of high-throughput sequencing technologies to produce genome-scale datasets was expected to settle some long-standing controversies across the Tree of Life, particularly in areas where short branches occur at deep timescales. Instead, these datasets have often yielded many well-supported but conflicting topologies, and highly variable gene-tree distributions. A variety of branch-support metrics beyond the nonparametric bootstrap are now available to assess how robust a phylogenetic hypothesis may be, as well as new methods to...

Adult facilitation becomes competition as juvenile soapberry bugs age

Meredith Cenzer
Intraspecific interactions can change from facilitative to competitive depending on the organism’s ontogeny. In plant-feeding insects, host plant defenses can be strengthened or weakened by insect feeding, and can therefore be important for determining whether two insects feeding on the same plant help or harm each other’s fitness. Here I conducted two experiments looking at the direct effect of a physical seed defense and the role of intraspecific facilitation in reducing the effects of that...

Slower environmental cycles maintain greater life-history variation within populations

John Park & Tim Wootton
Populations in nature are comprised of individual life histories, whose variation underpins ecological and evolutionary processes. Yet the forces of environmental selection that shape intrapopulation life-history variation are still not well understood, and efforts have largely focused on random (stochastic) fluctuations of the environment. However, a ubiquitous mode of environmental fluctuation in nature is cyclical, whose periodicities can change independently of stochasticity. Here we test theoretically-based hypotheses for whether shortened (‘Fast’) or lengthened (‘Slow’) environmental...

Calibrating phylogenies assuming bifurcation or budding alters inferred macroevolutionary dynamics in a densely sampled phylogeny of bivalve families

Nicholas Crouch, Stewart Edie, Katie Collins, Rüdiger Bieler & David Jablonski
Analyses of evolutionary dynamics can be profoundly affected by age calibrations of phylogenetic nodes under different models of lineage branching. Most time-calibrated molecular phylogenies of extant taxa assume a purely bifurcating model, where nodes are calibrated using the daughter lineage with the older first occurrence in the fossil record. Lineages can also split via budding, in which a parent lineage persists following the origin of a daughter lineage, and nodes are calibrated using the age...

Phylogeny, biogeography, and classification of the elms (Ulmus)

Andrew Hipp, Alan Whittemore, Ryan S. Fuller, Bethany H. Brown, Marlene Hahn, Linus Gog & Jaime A. Weber
A RAD-seq phylogeny is presented for the genus Ulmus, and a revised infrageneric classification is given, with keys, descriptions, and range maps for the subgenera and sections. The previously accepted classification was based on a cpDNA phylogeny, but several well-marked clades in the chloroplast phylogeny are not recovered in the RAD-seq phylogeny and do not seem to represent valid clades in the organismal phylogeny. Ordination and STRUCTURE analysis support a broad species concept in Ulmus...

Data for Manuscript: A desert songbird with no confamilials in the Western Hemisphere (Verdin, Auriparus flaviceps) investigates divergent conspecific songs

Emma Greig, Eva Kinnebrew, Max Witynski & Eric Larsen
This is the dataset that accompanies the manuscript: A desert songbird with no confamilials in the Western Hemisphere (Verdin, Auriparus flaviceps) investigates divergent conspecific songs, published in the journal Ornithology (2021). One spreadsheet is a dataset for analysis of Verdin song acoustic structure (“Supplementary Material Acoustic Data.xls”), one spreadsheet is a dataset for analysis of Verdin response to playbacks (“Supplementary Material Playback Data.xls”), and one spreadsheet is metadata about all the recordings used in the...

Differential impacts of alternate primary producers on carbon cycling

Khashiff Miranda, Brooke Weigel, Sophie McCoy & Catherine Pfister
Disturbance impacts the spatial distribution of primary producers, which can have cascading effects on ecosystem function. The lower-intertidal zone on the rocky shores of the Pacific Northwest is one such place where wave energy creates a mosaic-like distribution between two assemblages: surfgrass (Phyllospadix scouleri) meadows and macroalgal forests dominated by kelp. We simulated wave disturbance by experimentally removing patches of surfgrass monocultures, resulting in a macroalgal assemblage with increased diversity, biomass, and net primary productivity...

The impact of indoor residual spraying on Plasmodium falciparum microsatellite variation in an area of high seasonal malaria transmission in Ghana, West Africa

Dionne Argyropoulos, Shazia Ruybal‐Pesántez, Samantha L. Deed, Abraham R. Oduro, Samuel K. Dadzie, Maxwell A. Appawu, Victor Asoala, Mercedes Pascual, Kwadwo A. Koram, Karen P. Day, Maxwell A. Appawu, Kathryn E. Tiedje, Victor Asoala, Mercedes Pascual, Kwadwo A. Koram, Karen P. Day & Kathryn E. Tiedje
Here, we report the first population genetic study to examine the impact of indoor residual spraying (IRS) on Plasmodium falciparum in humans. This study was conducted in an area of high seasonal malaria transmission in Bongo District, Ghana. IRS was implemented during the dry season (November-May) in three consecutive years between 2013 and 2015 to reduce transmission and attempt to bottleneck the parasite population in humans towards lower diversity with greater linkage disequilibrium. The study...

The atomic-level physiochemical determinants of T cell receptor dissociation kinetics

Zachary Rollins, Roland Faller, Ilias Tagkopolous, Jun Huang & Steven George
The force-dependent bond lifetime of a T Cell Receptors (TCR) to 17 peptide-Major Histocompatibility Complexes (pMHCs) was simulated using Steered Molecular Dynamics. Physiochemical descriptors of the TCR-pMHC interaction during simulation were then filtered and selected to understand the best feature sets that predict bond lifetime. This methodology sets precedence on the rational design of TCRs via force-dependent bond lifetime enhancement.

Preface: SCiL 2021 Editors' Note

Allyson Ettinger, Ellie Pavlich & Brandon Prickett

Kuali OLE at the University of Chicago Library

Frances McNamara, Stuart Miller & Tod Olson
This case study documents the processes at the University of Chicago Library (Library) that ultimately resulted in the decision to replace the Library’s proprietary systems – SirsiDynix’s Horizon, Innovative Interfaces’ Millennium Acquisitions and Serials Solution’s AquaBrowser – with the open source VuFind user interface and Kuali OLE (Open Library Environment).

Mamlūk Studies Review Volume 23 (full volume)

Registration Year

  • 2021

Resource Types

  • Dataset
  • Text
  • Journal Article
  • Report


  • University of Chicago
  • George Washington University
  • Smithsonian Institution
  • Cornell University
  • Wellcome Sanger Institute
  • Stanford University
  • Universität Hamburg
  • The University of Texas at Austin
  • Columbia University
  • Princeton University