90 Works

Data from: Sudden unexpected death in epilepsy: a personalised prediction tool

Ashwani Jha, Cheongeun Oh, Dale Hesdorffer, Beate Diehl, Sasha Devore, Martin Brodie, Torbjörn Tomson, Josemir W. Sander, Thaddeus S. Walczak & Orrin Devinsky
Objective: To develop and validate a tool for individualised prediction of Sudden Unexpected Death in Epilepsy (SUDEP) risk, we re-analysed data from one cohort and three case-control studies undertaken 1980-2005. Methods: We entered 1273 epilepsy cases (287 SUDEP, 986 controls) and 22 clinical predictor variables into a Bayesian logistic regression model. Results: Cross-validated individualized model predictions were superior to baseline models developed from only average population risk or from generalised tonic-clonic seizure frequency (pairwise difference...

Data for: The long-term impacts of deer herbivory in determining temperate forest stand and canopy structural complexity

Samuel Reed, Alejandro Royo, Alexander Fotis, Kathleen Knight, Charles Flower & Peter Curtis
1. Ungulates place immense consumptive pressure on forest vegetation globally, leaving legacies of reduced biodiversity and simplified vegetative structure. However, what remains unresolved is whether browse-induced changes occurring early in succession ultimately manifest themselves in the developed forest canopy. Understanding the development and persistence of these legacies is critical as canopy structure is an important determinant of forest ecosystem functions like carbon sequestration and wildlife habitat. 2. We measured how white-tailed deer (Odocoileus virginianus) browse...

Data from: Consequences of aboveground invasion by non-native plants into restored vernal pools do not prompt changes in belowground processes

Amber Churchill & Akasha Faist
Given the frequent overlap between biological plant invasion and ecological restoration efforts it is important to investigate their interactions to sustain desirable plant communities and modify long-term legacies both above and belowground. To address this relationship, we used natural reference, invaded, and constructed vernal pools in the Central Valley of California to examine potential changes in direct and indirect plant effects on soils associated with biological invasion and active restoration ecosystem disturbances. Our results showed...

Chlorhexidine oral rinses for symptomatic COPD: a randomized, blind, placebo-controlled preliminary study

Alexa Pragman, Ann Fieberg, Cavan Reilly & Chris Wendt
Background: Chlorhexidine oral rinses decrease ventilator-associated pneumonia but its effect on COPD is unknown. Research Question: Will a preliminary study of the effect of twice-daily chlorhexidine oral rinses on oral and lung microbiota biomass and respiratory symptoms, compared to placebo, support the conduct of a larger clinical trial? Study Design and Methods: Participants aged 40-85 with COPD and chronic respiratory symptoms were randomized 1:1 to twice-daily 0.12% chlorhexidine oral rinses vs. placebo. Results: Forty-four participants...

Analysis of ancestry heterozygosity suggests that hybrid incompatibilities in threespine stickleback are environment-dependent

Ken Thompson, Catherine Peichel, Diana Rennison, Matthew McGee, Arianne Albert, Timothy Vines, Anna Greenwood, Abigail Wark, Yaniv Brandvain, Molly Schumer & Dolph Schluter
Hybrid incompatibilities occur when interactions between opposite-ancestry alleles at different loci reduce the fitness of hybrids. Most work on incompatibilities has focused on those that are 'intrinsic', meaning they affect viability and sterility in the laboratory. Theory predicts that ecological selection can also underlie hybrid incompatibilities, but tests of this hypothesis using sequence data are scarce. In this article, we compiled genetic data for F2 hybrid crosses between divergent populations of threespine stickleback fish (Gasterosteus...

Pedigree-based and phylogenetic methods support surprising patterns of mutation rate and spectrum in the gray mouse lemur

Ryan Campbell, George Tiley, Jelmer Poelstra, Kelsie Hunnicutt, Peter Larsen, Hui-Jie Lee, Jeffrey Thorne, Mario Dos Reis & Anne Yoder
Mutations are the raw material on which evolution acts, and knowledge of their frequency and genomic distribution is crucial for understanding how evolution operates at both long and short timescales. At present, the rate and spectrum of de novo mutations have been directly characterized in relatively few lineages. Our study provides the first direct mutation rate estimate for a strepsirrhine (i.e., the lemurs and lorises), which comprise nearly half of the primate clade. Using high-coverage...

Wavenumber-space band clipping in nonlinear periodic structures

Weijian Jiao & Stefano Gonella
In weakly nonlinear systems, the main effect of cubic nonlinearity on wave propagation is an amplitude-dependent correction of the dispersion relation. This phenomenon can manifest either as a frequency shift or as a wavenumber shift depending on whether the excitation is prescribed as a initial condition or as a boundary condition, respectively. Several models have been proposed to capture the frequency shifts observed when the system is subjected to harmonic initial excitations. However, these models...

Conspecific leaf litter induces negative feedbacks in Asteraceae seedlings

Max Zaret & Briana Whitaker
The plant soil feedback (PSF) framework has been instrumental in quantifying soil microbial impacts on plant fitness and mechanisms for species coexistence. The recent extension of the PSF framework to microbes associated with aboveground tissues of plants, termed here as plant phyllosphere feedbacks (PPFs), can also help determine the role of aboveground microbes as drivers of plant-plant interactions. However, experimental tests of PPFs in wild hosts is nascent and their prevalence across diverse hosts remains...

Integrating socio-ecological suitability with human-wildlife conflict risk: Case study for translocation of a large ungulate

Nicholas McCann, Eric Walberg, James Forester, Michael Schrage, David Fulton & Mark Ditmer
1. Translocations are essential for reestablishing wildlife populations. As they sometimes fail, it is critical to assess factors that influence their success pre-translocation. 2. Socio-ecological suitability models (SESMs) integrate social acceptance and ecological suitability to enable identification of areas where wildlife populations will expand, which makes it likely that SESMs will also be useful for predicting translocation success. 3. To inform site-selection for potential elk (Cervus canadensis) reintroduction to northeastern Minnesota, USA, we developed broad-scale...

The invasion paradox dissolves when using phylogenetic and temporal perspectives

Adrienne Ernst, Rebecca Barak, Andrew Hipp, Andrea Kramer, Hannah Marx & Daniel Larkin
1. Elton’s prediction that higher biodiversity leads to denser niche-packing and thus higher community resistance to invasion has long been studied, with species richness as the predominant measure of diversity. However, few studies have explored how phylogenetic and functional diversity, which should represent niche space more faithfully than taxonomic diversity, influence community invasibility, especially across longer time frames and over larger spatial extents. 2. We used a 15-year, 150-site grassland dataset to assess relationships between...

Differences in bee community composition between restored and remnant prairies are more strongly linked to forb community differences than landscape differences

Ian Lane, Zachary Portman, Christina Herron-Sweet, Gabriella Pardee & Daniel Cariveau
1. Grassland restoration is an important tool for conserving bee biodiversity within agricultural landscapes. Restorations foster increases in local bee abundance and α-diversity, however, these measures are insufficient for understanding if remnant communities are being conserved. We compared native bee α-diversity, β-diversity, and community composition between restored and remnant prairies in Minnesota, USA. We then investigated two potential drivers of bee community dissimilarity between restored and remnant prairies: proportion of agricultural land surrounding a restoration...

Data from: Sex-specific associations between life history traits and a novel reproductive polymorphism in the Pacific field cricket

Jon Richardson, Justa Heinen-Kay & Marlene Zuk
Associations between heritable polymorphisms and life-history traits, such as development time or reproductive investment, may play an underappreciated role in maintaining polymorphic systems. This is because selection acting on a particular morph could be bolstered or disrupted by correlated changes in life-history or vice versa. In a Hawaiian population of the Pacific field cricket (Teleogryllus oceanicus), a novel mutation (flatwing) on the X-chromosome is responsible for a heritable polymorphism in male wing structure. We used...

Data from: Gravity and active acceleration limit the ability of killer flies (Coenosia attenuata) to steer towards prey when attacking from above

Sergio Rossoni, Samuel Fabian, Gregory Sutton & Paloma Gonzalez-Bellido
Insects that predate aerially usually contrast prey against the sky and attack upwards. However, killer flies (Coenosia attenuata) can attack prey flying below them, performing what we term 'aerial dives'. During these dives, killer flies accelerate up to 36 m/s2. Although the trajectories of the killer fly's dives appear highly variable, proportional navigation explains them, as long as the model has the lateral acceleration limit of a real killer fly. The trajectory's steepness is explained...

An exotic herbivore reinforces competition between exotic and native plants

Yuzu Sakata & Timothy Craig
Despite increasing evidence that herbivore-mediated indirect effects play a major role in plant competition, it is unclear how and when they contribute to plant invasiveness. The outcomes of herbivore-mediated indirect effects are primarily dependent on the environment and have complex interactions with the direct interactions between plants. We evaluated the herbivore-mediated indirect effects of Solidago altissima (Asteraceae) on other co-occurring native Asteraceae species at multiple sites in a native range [the United States (US)] and...

Migration and tolerance shape host behavior and response to parasites infection

Dongmin Kim & Allison Shaw
Numerous theoretical models have demonstrated that migration, a seasonal animal movement behavior, can minimize the risks and costs of parasite infection. Past work on migration-infection interactions assumes migration is the only strategy available to organisms for dealing with the parasite infection, that is they migrate to a different environment to recover or escape from infection. Thus, migration is similar to the non-spatial strategy of resistance, where hosts prevent infection or kill parasites once infected. However,...

Aboveground carbon stocks and dynamics in Andean forests

Alvaro Duque, Miguel Peña, Francisco Cuesta, Sebastián González-Caro, Peter Kennedy, Oliver Phillips, Marco Calderón, Cecilia Blundo, Julieta Carilla, Leslie Cayola, William Farfán-Ríos, Alfredo Fuentes, Ricardo Grau, Jürgen Homeier, María I. Loza-Rivera, Jonathan A. Myers, Oriana Osinaga-Acosta, Manuel Peralvo, Esteban Pinto, Sassan Saatchi, Miles Silman, J. Sebastián Tello, Andrea Terán-Valdez & Kenneth J. Feeley
This dataset (Andean_AGB.xlsx) has the data employed in the paper entitled Old-growth Andean forests as globally important carbon sinks and future carbon refuges. The data was compiled as the results of the work of several research teams spread out across the Andean region. The information available here has data about aboveground carbon stocks and dynamics and the main explanatory variables, such as climate and symbiotic root associations.

Biodiversity-productivity relationships are key to nature-based climate solutions

Akira Mori, Laura Dee, Andrew Gonzalez, Haruka Ohashi, Jane Cowles, Alexandra Wright, Michel Loreau, Yann Hautier, Tim Newbold, Peter Reich, Tetsuya Matsui, Wataru Takeuchi, Kei-Ichi Okada, Rupert Seidl & Forest Isbell
The global impacts of biodiversity loss and climate change are interlinked but the feedbacks between them are rarely assessed. Areas with greater tree diversity tend to be more productive, providing a greater carbon sink, and biodiversity loss could reduce these natural C sinks. Here, we quantify how tree and shrub species richness could affect biomass production at biome, national and regional scales. We find that greenhouse gas mitigation could help maintain tree diversity and thereby...

Model data for: Drawdown of atmospheric pCO2 via dynamic particle export stoichiometry in the ocean twilight zone

Tatsuro Tanioka & Katsumi Matsumoto
Understanding the global carbon cycle is key to understanding the climate system. One of the large unknowns is the processes happening in the twilight zone of the ocean. Here, we focus on how elemental stoichiometry of particulate organic matter in the twilight zone affects the strength of the biological pump and atmospheric CO2. We show through modeling that atmospheric CO2 is very sensitive to the change in C:P ratio in the twilight zone. Numerous model...

Exotics are more complementary over time in tree biodiversity-ecosystem functioning experiments

Michael Belluau, Alain Paquette, Dominique Gravel, Peter Reich, Artur Stefanski & Christian Messier
Background and aims The Biodiversity – Ecosystem Functioning (BEF) literature proposes that ecosystem functioning increases with biodiversity because of complementarity in resource use among species, associated with functional diversity. In this study, we challenge the trait-based ecology framework by comparing congeneric exotic (European) and native (North American) tree species showing similar resource-use functional trait values. The trait-based framework suggests that two functionally equivalent species should play similar roles in a community, resulting in similar interactions...

Data From: Diversifying bioenergy crops increases yield and yield stability by reducing weed abundance

Jacob Jungers, Yi Yang, Christopher Fernandez, Forest Isbell, Clarence Lehman, Don Wyse & Craig Sheaffer
Relationships between species diversity, productivity, temporal stability of productivity, and plant invasion have been well documented in grasslands, and these relationships could translate to improved agricultural sustainability. However, few studies have explored these relationships in agricultural contexts where fertility and weeds are managed. Using seven years of biomass yield and species composition data from twelve species mixture treatments varying in native species diversity, we found that species richness increased yield and inter-annual yield stability by...

PacBio sequencing output increased through uniform and directional 5-fold concatenation

Celia Blanco, Nisha Kanwar, Irene A. Chen & Burckhard Seelig
Advances in sequencing technology have allowed researchers to sequence DNA with greater ease and at decreasing costs. Main developments have focused on either sequencing many short sequences or fewer large sequences. Methods for sequencing mid-sized sequences of 600-5,000 bp are currently less efficient. For example, the PacBio Sequel I system yields ~100,000-300,000 reads with an accuracy per base pair of 90-99%. We sought to sequence several DNA populations of ~870 bp in length with a...

Performance and refinement of nitrogen fertilization tools

Curtis Ransom, Jason Clark, Gregory Bean, Christopher Bandura, Matthew Shafer, Newell Kitchen, James Camberato, Paul Carter, Richard Ferguson, Fabián Fernández, David Franzen, Carrie Laboski, David Myers, Emerson Nafziger & John Sawyer
Improving corn (Zea mays L.) N management is pertinent to economic and environmental objectives. However, there are limited comprehensive data sources to develop and test N fertilizer decision aid tools across a wide geographic range of soil and weather scenarios. Therefore, a public-industry partnership was formed to conduct standardized corn N rate response field studies throughout the U.S. Midwest. This research was conducted using a standardized protocol at 49 site-years across eight states over the...

When text simplification is not enough: Could a graph-based visualization facilitate consumers’ comprehension of dietary supplement information?

Xing He, Rui Zhang, Jordan Alpert, Sicheng Zhou, Terrence Adam, Aantaki Raisa, Yifan Peng, Hansi Zhang, Yi Guo & Jiang Bian
Background: Dietary supplements are widely used. However, dietary supplements are not always safe. For example, an estimated 23,000 emergency room visits every year in the United States were attributed to adverse events related to dietary supplement use. With the rapid development of the Internet, consumers usually seek health information including dietary supplement information online. To help consumers access quality online dietary supplement information, we have identified trustworthy dietary supplement information sources and built an evidence-based...

PSP FIELDS F2 Time Domain Sampler (F2 TDS) 100 bit/s Summary Telemetry, Level 2 (L2), 8 s Data

Stuart D. Bale, Keith Goetz & Joshua Lynch
PSP FIELDS F2 100 bps Summary Telemetry Data.

Seasonal NDVI data for a biodiversity and consumer removal experiment at the University of Minnesota's Cedar Creek Ecosystem Science Reserve (2009 - 2016)

Max Zaret
Plant biodiversity and consumers (herbivores, pathogens, and mutualists) are important mediators of energy and carbon fluxes in grassland ecosystems. Although the role of consumers and plant diversity in controlling peak-season biomass production has been characterized, knowledge of their roles in within-season variation of energy and carbon flux remains poorly understood. Here we measure variation in consumer and plant diversity control of plant biomass production throughout the growing season and their impact on plant biomass phenology...

Registration Year

  • 2021

Resource Types

  • Dataset
  • Text
  • Journal Article
  • Report


  • University of Minnesota
  • University of Toronto
  • Duke University
  • University of Notre Dame
  • University of British Columbia
  • University of Quebec at Montreal
  • Stanford University
  • University of Michigan–Ann Arbor
  • University of Georgia
  • Oregon State University