40 Works

Do novel insecticides pose a threat to beneficial insects?

Harry Siviter & Felicity Muth
Systemic insecticides, such as neonicotinoids, are a major contributor towards beneficial insect declines. This has led to bans and restrictions on neonicotinoid use globally, most noticeably in the Europe Union, where four commonly-used neonicotinoids are banned from outside agricultural use. While this might seem like a victory for conservation, restrictions on neonicotinoid use will only benefit insect populations if newly emerging insecticides do not have similar negative impacts on beneficial insects. Flupyradifurone and sulfoxaflor are...

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: Emigrating together but not establishing together: A cockroach rides ants and leaves

Zachary I. Phillips
Symbionts of ant colonies can hitchhike on winged ant reproductives (alates) during colony nuptial flights. Attaphila fungicola Wheeler, a miniature cockroach that lives in the nests of Texas leaf-cutter ants (Atta texana Buckley), hitchhikes on female alates (winged queens). Hitchhiking roaches are presumably vertically transmitted from leaf-cutter parent colony to daughter colony, remaining with female alates as they transition into foundresses (workerless queens); however, foundresses have limited resources and high mortality rates. Rather than remaining...

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...

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...

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...

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...

Capillary rise in vuggy porous media

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

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....

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...

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: 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: 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...

Registration Year

  • 2020
    40

Resource Types

  • Dataset
    40

Affiliations

  • The University of Texas at Austin
    40
  • Stanford University
    2
  • Texas A&M University
    2
  • Georgetown University
    2
  • Agricultural Research Service
    2
  • University of Florida
    2
  • University of Illinois at Urbana Champaign
    2
  • Université du Québec à Rimouski
    2
  • HudsonAlpha Institute for Biotechnology
    2
  • North Carolina State University
    2