27 Works

New England Foliar Spectral Reflectance and Nutrient Concentrations Data

Wenxiu Teng, Qian Yu, Ivan Mischenko, Alexandrea Rice & Justin Richardson

Spatiotemporal connectivity dynamics in spatially structured populations

Joseph Drake, Xavier Lambin & Chris Sutherland
Connectivity is a fundamental concept linking dispersal to the emergent dynamics and persistence of spatially structured populations. Functional measures of connectivity typically seek to integrate aspects of landscape structure and animal movement to describe ecologically meaningful connectedness at the landscape and population scale. Despite this focus on function, traditional measures of landscape connectivity assume it is a static property of the landscape, hence abstracting out the underlying spatiotemporal population dynamics. Connectivity is, arguably, a dynamic...

Genetic variation data to explore the phylogeny of Iberian weedy rice

Xiang Li, Ana Caicedo & Shulin Zhang
Weedy rice, a damaging conspecific weed of cultivated rice, has arisen multiple times independently around the world. Understanding all weedy rice origins is necessary to create more effective weed management strategies. The origins of weedy rice in Spain and Portugal, where there are no native Oryza species are unknown. We used genotyping-by-sequencing (GBS) to understand the origin of Iberian weedy rice and its relationship to other weedy, wild, and cultivated rice groups worldwide. This is...

Floral traits mediate pollinator disease transmission

Jennifer Van Wyk, Amy-Mei Lynch & Lynn Adler
Plants modulate multitrophic ecological interactions, and variation in plant traits can affect these interactions. Pollinators are exposed to pathogens at flowers and acquire or transmit pathogens at different rates on different plant species, but the traits mediating those interactions are almost entirely unknown. We experimentally manipulated five plant traits that span scales including flower, inflorescence, and plant, to determine their effects on pathogen transmission between foraging bees. Specifically, we manipulated two morphological traits (corolla lip...

Forecasts of landscape evolution and soil organic carbon redistribution in the Midwestern United States

Jeffrey Kwang, Evan Thaler & Isaac Larsen
In the Midwestern US, agricultural practices, i.e. tillage, causes soil erosion that changes how soil organic carbon (SOC) is naturally distributed across the landscape. We use a landscape evolution model (LEM) to predict how landscapes and SOC change from 2020 to 2520 across 410 counties located in Illinois, Indiana, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, South Dakota, and Wisconsin. Initial distributions of SOC were estimated with the gridded Soil Survey Geographic (gSSURGO) dataset, maintained...

Relating wing morphology and immune function to patterns of partial and differential bat migration using stable isotopes

Elizabeth J Rogers, Liam McGuire, Fred J Longstaffe, Jeff Clerc, Emma Kunkel & Erin Fraser
Migration is energetically expensive and is predicted to drive similar morphological adaptations and physiological trade-offs in migratory bats and birds. Previous studies suggest that fixed traits like wing morphology vary among species and individuals according to selective pressures on flight, while immune defenses can vary flexibly within individuals as energy is variably reallocated throughout the year. We assessed intraspecific variation in wing morphology and immune function in silver-haired bats (Lasionycteris noctivagans), a species that follows...

Native generalist natural enemies and an introduced specialist parasitoid together control an invasive forest insect

Hannah Broadley, George Boettner, Brenda Schneider & Joseph Elkinton
Specialized natural enemies have long been considered a major force driving the population dynamics of outbreaking forest insects. While research has traditionally focused on the role of specialist parasitoids, recent studies and reviews reflect an appreciation of complex interactions among many regulatory factors. The sources suggest that specialist parasitoids and generalist predators can each inflict strong top‐down effects and that specialists and generalists can interact to regulate insect herbivore populations. Here we use the model...

Sunflower plantings reduce a common gut pathogen and increase queen production in bumble bee colonies

Rosemary L. Malfi, Quinn S. McFrederick, Giselle Lozano, Rebecca E. Irwin & Lynn Adler
We evaluated whether plantings of sunflower (Helianthus annuus), whose pollen reduces infection by some pathogens when fed to bees in captivity, lowered pathogen levels and increased reproduction in free-foraging bumble bee colonies (Bombus impatiens). We placed pairs of commercial colonies of B. impatiens at 20 mixed vegetable farms in western Massachusetts between Jul-23 and Oct-6 2019. Flowering resources typically visited by bumble bees were quantified at each farm twice to characterize abundance and diversity. We...

Supplementary data, code, and information for ‘Global Temperature Patterns in Past Centuries: An interactive presentation’ (Earth Interactions, Mann et al. 2000)

M. Mann, E. Gille, R. Bradley, M. Hughes, J. Overpeck, F. Keimig & W. Gross
The recent availability of global networks of annual or seasonal resolution proxy data, combined with the few long instrumental and historical climate records available during the past few centuries, make it possible now to reconstruct annual and seasonal spatial patterns of temperature variation, as well as hemispheric, global-mean, and regional temperature trends, several centuries back in time. Reconstructions of large-scale global or hemispheric trends during centuries past can place the instrumental assessments of climate during...

Abiotic stress and biotic factors mediate range dynamics on opposing edges

Alexej Siren
Aim: In the face of global change, understanding causes of range limits is one of the most pressing needs in biogeography and ecology. A prevailing hypothesis is that abiotic stress forms cold (upper latitude/altitude) limits whereas biotic interactions create warm (lower) limits. A new framework – Interactive Range-Limit Theory (iRLT) – asserts that positive biotic factors such as food availability can ameliorate abiotic stress along cold edges, whereas abiotic stress can have a positive effect...

Labeled data for citation field extraction

Dung Thai, Zhiyang Xu, Nicholas Monath, Boris Veytsman & Andrew McCallum
Citations are an important part of scientific papers, and the proper handling of them is indispensable for the science of science. Citation field extraction is the task of parsing citations: given a citation string, extract authors, title, venue, doi etc. Since the number of citations is counted by hundreds millions, efficient computer based methods for this task are very important. The development of machine learning methods for citation field extraction requires ground truth: a large...

The Intersection of Bee and Flower Sexes: Pollen Availability Shapes Sex-Specific Bee Foraging Associations in Sunflower

Justin C. Roch, Rosemary Malfi, Jennifer I. Van Wyk, Deicy Carolina Muñoz Agudelo, Joan Milam & Lynn Adler
We evaluated whether female or male bees were more abundant on sunflowers, whether female bees were more abundant on pollen-fertile or pollen-sterile sunflower cultivars, and whether the bee community differed between pollen-fertile and pollen-sterile sunflower cultivars. We further evaluated whether bee communities were shaped by local floral resources and landscape composition. We sampled bees visiting sunflowers (Helianthus spp.) from 14 farms in the Connecticut River Valley of western Massachusetts between 25 July to 27 September...

Pollen limitation of native plant reproduction in an urban landscape

Rebecca Irwin, Adrian Carper, Lynn Adler & Paige Warren
Premise: Evidence suggests that bees may benefit from moderate levels of human development. However, the effects of human development on pollination and reproduction of bee-pollinated plants are less well understood. Studies have measured natural variation in pollination and plant reproduction as a function of urbanization, but few have experimentally measured the magnitude of pollen limitation in urban versus non-urban sites. Doing so is important to unambiguously link changes in pollination to plant reproduction. Previous work...

Sleeper Species Database O'huru et. al. 2022

Ayodelé O'Uhuru, Bethany A. Bradley & Toni Lyn Morelli

Assessment Data for \"Envisioning the Future of a Mature IR\"

Erin Jerome, Thea Atwood, Melanie Radik & Rebecca Seifried
This dataset contains two spreadsheets: 1) an in-depth functionality assessment of Digital Commons based on the University of Pennsylvania's "Platform Functionality Review" (https://penntrl.wordpress.com/2019/01/23/scrip-appendices/); 2) a running list of required functionality for an institutional repository platform. The spreadsheets accompany a forthcoming book chapter, "Envisioning the Future of a Mature IR: A Midlife Assessment of ScholarWorks@UMassAmherst".

Data from: Benchmarking ultra-high molecular weight DNA preservation methods for long-read and long-range sequencing

Hollis Dahn, Jacquelyn Mountcastle, Jennifer Balacco, Sylke Winkler, Iliana Bista, Anthony Schmitt, Olga Vinnere Pettersson, Giulio Formenti, Karen Oliver, Michelle Smith, Wenhua Tan, Anne Kraus, Stephen Mac, Lisa Komoroske, Tanya Lama, Andrew Crawford, Robert Murphy, Samara Brown, Alan Scott, Phillip Morin, Erich Jarvis & Olivier Fedrigo
Studies in vertebrate genomics require sampling from a broad range of tissue types, taxa, and localities. Recent advancements in long-read and long-range genome sequencing have made it possible to produce high-quality chromosome-level genome assemblies for almost any organism. However, adequate tissue preservation for the requisite ultra-high molecular weight DNA (uHMW DNA) remains a major challenge. Here we present a comparative study of preservation methods for field and laboratory tissue sampling, across vertebrate classes and different...

Hair phenotype diversity across Indriidae lemurs

Elizabeth Tapanes, Rachel Jacobs, Ian Harryman, , Mitchell Irwin, Jason Kamilar & Brenda Bradley
Objectives: Hair (i.e., pelage/fur) is a salient feature of primate (including human) diversity and evolution—serving functions tied to thermoregulation, protection, camouflage, and signaling—but wild primate pelage evolution remains relatively understudied. Specifically, assessing multiple hypotheses across distinct phylogenetic scales is essential but is rarely conducted. We examine whole body hair color and density variation across Indriidae (Avahi, Indri, Propithecus)—a lineage that, like humans, exhibits vertical posture (i.e., their whole bodies are vertical to the sun). Materials...

Sustainable community development in Nepal : voices from the bottom-up.

Totraman Gurung

Richness and resilience in the Pacific: DNA metabarcoding enables parallelized evaluation of biogeographic patterns

Susan Kennedy, Jerilyn Calaor, Yazmín Zurápiti, Julian Hans, Masashi Yoshimura, Juanita Choo, Jeremy Andersen, Jackson Callaghan, George Roderick, Henrik Krehenwinkel, Haldre Rogers, Rosemary Gillespie & Evan Economo
Islands make up a large proportion of Earth’s biodiversity, yet are also some of the most sensitive systems to environmental perturbation. Biogeographic theory predicts that geologic age, area, and isolation typically drive islands’ diversity patterns, and thus potentially impact non-native spread and community homogenization across island systems. One limitation in testing such predictions has been the difficulty of performing comprehensive inventories of island biotas and distinguishing native from introduced taxa. Here, we use DNA metabarcoding...

Phylogenomic analyses of 2,786 genes in 158 lineages support a root of the eukaryotic tree of life between opisthokonts and all other lineages

Mario Cerón-Romero, Laura Katz, Miguel Fonseca, Leonardo De Oliveira Martins & David Posada
Advances in phylogenetic methods and high-throughput sequencing have allowed the reconstruction of deep phylogenetic relationships in the evolutionary history of eukaryotes. Yet, the root of the eukaryotic tree of life remains elusive. The most ‘popular’ (i.e. in textbooks and reviews) hypothesis for the root is between Unikonta (Opisthokonta + Amoebozoa) and Bikonta (all other eukaryotes), which emerged from analyses of a single gene fusion and a limited sampling of eukaryotic lineages. Subsequent highly-cited studies based...

Data for \"Breaking down barriers to consistent, climate-smart regulation of invasive plants - a case study of northeast states\"

Bethany Bradley, Evelyn M. Beaury, Emily J. Fusco, Lara Munro, Carrie Brown-Lima, Benjamin Kesler, Nancy Olmstead & Jocelyn Parker

The model elementary training sequence : a personal growth program for student teachers.

Frederick Hanoch McCarty

Data and codes from: Flight hampers the evolution of weapons in birds

João C. T. Menezes & Alexandre V. Palaoro
Birds are a remarkable example of how sexual selection can produce diverse ornaments and behaviors. Specialized fighting structures like deer’s antlers, in contrast, are mostly absent among birds. Here, we investigated if the birds’ costly mode of locomotion — powered flight — helps explain the scarcity of weapons among members of this clade. Our simulations of flight energetics predicted that the cost of bony spurs — a specialized avian weapon — should increase with time...

Source Data for \"Medial packing and elastic asymmetry stabilize the double-gyroid in block copolymers\"

Anugu Abhiram Reddy, Michael S. Dimittiyev & Gregory Grason

Consuming sunflower pollen reduced pathogen infection but did not alter measures of immunity in bumble bees

Alison Fowler, Ben Sadd, Toby Bassingthwaite, Rebecca Irwin & Lynn Adler
Certain diets can benefit bee health by reducing pathogens, but the mechanism(s) driving these medicinal effects are largely unexplored. Recent research found that sunflower (Helianthus annuus) pollen reduces the gut pathogen Crithidia bombi in the common eastern bumble bee (Bombus impatiens). Here, we tested the effects of sunflower pollen and infection on two bee immune metrics to determine if sunflower pollen diet drives changes in host immunity that can explain this medicinal effect. Bees were...

Registration Year

  • 2022

Resource Types

  • Dataset


  • University of Massachusetts Amherst
  • North Carolina State University
  • Pennsylvania State University
  • Merced College
  • Stanford University
  • George Washington University
  • Johns Hopkins University
  • Northern Illinois University
  • Arima Genomics (United States)
  • University of Aberdeen