60 Works

H2 in firn air from Megadunes, Antarctica

Eric Saltzman
This dataset contains two items: 1) firn air measurements of H2 from Megadunes, Antarctica. 2) atmospheric surface flask air measurements of H2 from NOAA GML, CSIRO, and AGAGE from 1991-2003 adjusted to a common calibration scale. Firn air was sampled at the Megadunes site in central Antarctica (80.78 °S, 124.49 °E, Alt: 2,283 m) Antarctica during January of 2004. A 3” diameter hole was bored to a depth of 70 m using an ice core...

Data from: Selection of floral traits by pollinators and seed predators during sequential life history stages

Diane Campbell, Mascha Bischoff, Robert Raguso, Heather Briggs & Paula Sosenski
Organismal traits often influence fitness via interactions with multiple species. That selection is not necessarily predictable from pairwise interactions, such as when interactions occur during different lifecycle stages. Theoretically, directional selection during two sequential episodes, e.g., pollination and seed survival, can generate quadratic or correlational selection for a set of traits that passes both selective filters. We compared strength of selection during pollination versus seed predation in the field and tested whether interactions with multiple...

Data from: Unraveling the ecological and evolutionary impacts of a plant invader on the pollination of a native plant

Wilnelia Recart & Diane Campbell
Interactions between a native plant species and its pollinators, herbivores, or microbiome can be affected by the presence of non-native plant species. Non-native plant species are altering plant-pollinator interactions, yet we know little about how these non-native species influence natural selection. In addition, year-to-year variation in flowering could influence the impacts of non-native species on reproductive success in native plants and the strength and direction of pollinator-mediated selection. We examined whether the presence of the...

Data from: True UV color vision in a female butterfly with two UV opsins

Adriana D. Briscoe & Susan D. Finkbeiner
In true color vision animals discriminate between light wavelengths, regardless of intensity, using at least two photoreceptors with different spectral sensitivity peaks. Heliconius butterflies have duplicate UV opsin genes, which encode ultraviolet and violet photoreceptors, respectively. In H. erato, only females express the ultraviolet photoreceptor, suggesting females (but not males) can discriminate between UV wavelengths. We tested the ability of H. erato, and two species lacking the violet receptor, H. melpomene and Eueides isabella, to...

Climate-driven limits to future carbon storage in California's wildland ecosystems

Shane Coffield, Kyle Hemes, Charles Koven, Michael Goulden & James Randerson
Enhanced ecosystem carbon storage is a key component of many climate mitigation pathways. The State of California has set an ambitious goal of carbon neutrality by 2045, relying in part on enhanced carbon sequestration in natural and working lands. We used statistical modeling, including random forests and climate analogues, to explore the climate-driven challenges and uncertainties associated with the goal of long-term carbon sequestration in forests and shrublands. We found that seasonal patterns of temperature...

Impact assessment of coastal marine range shifts to support proactive management

Amy Henry & Cascade Sorte
Climate change is reshuffling Earth’s biota as species ranges shift to track increasing habitat temperatures. While redistribution may be necessary for species persistence, there can also be impacts on existing communities upon arrival of novel, range-shifting species. Anticipating the beneficial versus deleterious impacts of range-shifting species is essential for determining whether active management is needed, which could include employing strategies from facilitation (eg managed relocation) to suppression (eg prevention/control). We employ an impact assessment protocol...

Spatiotemporal analysis of wildfires in California from 2000 to 2019

Shu Li & Tirtha Banerjee
The environmental pollution, property losses and casualties caused by wildfires in California are getting worse by the year. To minimize the interference of wildfires on economic and social development, and formulate targeted mitigation strategies, it is imperative to understand the scale and extent of previous wildfire occurrences. In this study, we first investigated the temporal distributions of past wildfires in California divided by size and causes and analyzed the changes observed in the past two...

Permeability of H2 in ice Ih

John Patterson & Eric Saltazman
Reconstructions of paleoatmospheric H2 using polar firn air and ice cores would lead to a better understanding of the H2 biogeochemical cycle and how it is influenced by climate change and human activity. H2 is a small, highly diffusive molecule, and its mobility in the ice matrix must be accounted for when intepreting polar firn air and ice core measurements. Previous work on the mobility of H2 in ice has focused on warm (272-273 K),...

The effects of adaptation to urea on feeding rates and growth in Drosophila larvae

Laurence Mueller, Kathreen Bitner, Grant Rutledge & James Kezos
A collection of forty populations were used to study the phenotypic adaptation of Drosophila melanogaster larvae to urea laced food. A long-term goal of this research is to map genes responsible for these phenotypes. This mapping requires large numbers of populations. Thus, we studied fifteen populations subjected to direct selection for urea tolerance and five controls. In addition, we studied another twenty populations which had not been exposed to urea but were subjected to stress...

Methyl bromide atmosphere-ocean box model code, inputs, and outputs

Melinda Nicewonger & Eric Saltzman
This dataset contains the source code and necessary inputs to run the 6-box atmosphere ocean model described in Saltzman et al., 2021 and Nicewonger et al., 2021. The model outputs described in Saltzman et al. are also described.

One-to-one orthologs between Danaus plexippus and other insect species

Jose Ranz, Pablo Gonzalez & Cei Abreu-Goodger
Ortholog identification was performed between the gene models annotated in Danaus plexippus, Bombyx mori, and Drosophila melanogaster. The D. plexippus sequences are from an assembly obtained from an individual that belonged to a monarch population found in Irapuato, Mexico. 1-to-1 orthologs were delineated as part of an analysis devised to determining the proportion of gene models with homology support in other Lepidoptera and D. melanogaster, and in relation to a previously published gene annotation of...

A study of gene expression, structure, and contractility of iPSC-Derived Cardiac Myocytes from a family with heart disease due to LMNA mutation

Mehrsa Mehrabi, Tessa A. Morris, Zixuan Cang, Cecilia H. H. Nguyen, Yutong Sha, Mira N. Asad, Nyree Khachikyan, Taylor L. Greene, Danielle M. Becker, Qing Nie, Michael V. Zaragoza & Anna Grosberg
Genetic mutations to the Lamin A/C gene (LMNA) can cause heart disease, but the mechanisms making cardiac tissues uniquely vulnerable to the mutations remain largely unknown. Further, patients with LMNA mutations have highly variable presentation of heart disease progression and type. In vitro patient-specific experiments could provide a powerful platform for studying this phenomenon, but the use of induced pluripotent stem cell-derived cardiomyocytes (iPSC-CM) introduces heterogeneity in maturity and function thus complicating the interpretation of...

Fibrin fiber fluctuation

Qingda Hu & Elliot Botvinick
Understanding force propagation through the fibrous extracellular matrix can elucidate how cells interact mechanically with their surrounding tissue. Presumably, due to elastic nonlinearities of the constituent filaments and their random connection topology, force propagation in fiber networks is quite complex, and the basic problem of force propagation in structurally heterogeneous networks remains unsolved. We report on a new technique to detect displacements through such networks in response to a localized force, using a fibrin hydrogel...

Plain-text conversions of U.S. Final Environmental Impact Statements from 2013-2020

Tyler Scott, Nicholas Marantz & Nicola Ulibarri
Administrative procedures are intended to increase transparency and help agencies make better decisions. However, these requirements also increase agency workload. Understanding how public agencies satisfy procedural requirements is a critical facet of agency performance. This analysis focuses on the language agencies use in Environmental Impact Statements (EISs) required by the U.S. National Environmental Policy Act (NEPA) – specifically, the reuse of similar text within and between assessments. We synthesize theories of institutional isomorphism and bureaucratic...

Data from: Drivers and cascading ecological consequences of Gambusia affinis trait variation

Zachary Wood, Laura Lopez, Celia Symons, Rebecca Robinson, Eric Palkovacs & Michael Kinnison
Phenotypic trait differences among populations can shape ecological outcomes for communities and ecosystems. However, few studies have mechanistically linked heritable and plastic components of trait variation to generalizable processes of ecology, such as trophic cascades. Here we assess morphological and behavioral trait variation in nine populations of common-garden reared western mosquitofish (Gambusia affinis) from three distinct ancestral predator environments (three populations per environment), each reared in the presence and absence of predator cues. We then...

The Paris Climate Agreement and future sea level rise from Antartica

Robert M. DeConto, David Pollard, Richard B. Alley, Isabella Velicogna, Edward Gasson, Natalya Gomez, Shaina Sadai, Alan Condron, Daniel M. Gilford, Erica L. Ashe, Robert E. Kopp, Dawei Li & Andrea Dutton

Invasion and Global Change Meta-analysis Data

Bianca E. Lopez, Jenica M. Allen, Jeffrey S. Dukes, Jonathan Lenoir, Montserat Vila, Dana M. Blumenthal, Evelyn M. Beaury, Emily J. Fusco, Toni Lyn Morelli, Cascade J. B. Sorte & Bethany A. Bradley
We conducted a global meta-analysis to investigate invasions, abiotic global environmental changes, and their combined effects on native species, communities, and ecosystems.We searched the Web of Science Core Collection for articles and reviews that were available in English through September 30, 2020. Search terms were chosen to identify papers reporting impacts of invasions with one of six abiotic global environmental changes (GECs: warming, nitrogen deposition, O2 depletion, drought, CO2 addition, and altered pH). We assessed...

2009 modeled electricity prices from HiGRID for the California grid

Brian Tarroja, Joshua H. Viers, Aditya Sood & Gustavo Facincani Dourado
This dataset was developed to be used in the CenSierraPywr model, created for the project "Optimizing Hydropower Operations While Sustaining Ecosystem Functions in a Changing Climate", for the California Energy Commission. The model that includes hydroeconomic optimization for hydropower production in the Stanislaus and Upper San Joaquin River basins in the Central Sierra Nevada, California. The two basins have high elevation reservoirs that are typically operated to maximize revenue from hydropower production. Therefore, to better...

Data from: Elucidating mutual mate choice

Nancy Burley & John Martin
Understanding the dynamics of mutual mate choice requires investigation of mate preferences of both sexes using a variety of designs, but fewer studies have focused on male choice in avian models. Here we conducted two experiments on preferences of male zebra finches to study the impact of trial design on results. Experimental design varied in number of trial participants, inclusion of observer (“audience”) males, and housing design for stimulus females. Females were reared on one...

Milkweeds (Asclepias genus) records in the western U.S.

Nalleli Carvajal Acosta
Species distributions are driven by abiotic and biotic factors, but the importance of variation in the availability and quality of critical resources is poorly understood. Disentangling the relative importance of these factors – abiotic environment, availability of critical resources, and resource quality– will be important to modeling species current distributions and responses to projected climate change. We address these questions using species distribution models (SDMs) for the western monarch butterfly population (Danaus plexippus), whose larvae...

Ionic amplifying circuits inspired by electronics and biology

Zuzanna Siwy, Rachel Lucas, Lane Baker & Chih-Yuan Lin
Integrated circuits are present in all electronic devices, and enable signal amplification, modulation, and relay. Nature uses another type of circuits composed of channels in a cell membrane, which regulate and amplify transport of ions, not electrons and holes as is done in electronic systems. Here we show an abiotic ionic circuit that is inspired by concepts from electronics and biology. The circuit amplifies small ionic signals into ionic outputs, and its operation mimics the...

Peromyscus WGCNA supplement

Gabriela Balderrama-Gutierrez, Ana Milovic, Ali Mortazavi & Alan Barbour
P. leucopus also (deer mouse) is a known reservoir for infectious disease such as lyme disease and it is able to survive infections that other rodent models cannot. In this paper we explore P. lecucopus transcriptomic response after LPS stimulus in blood, liver and spleen using RNA-seq and compare it to M. musculus response. When comparing gene response to LPS from different species and tissues, neutrophil associated terms are enriched in the P. leucopus response,...

Untargeted metabolomics molecular features data for plasma of 20 Peromyscus leucopus and 20 Mus musculus treated with LPS or controls

Alan Barbour, Nurul Islam, Ana Milovic & John Belisle
Animals that are competent natural reservoirs of zoonotic diseases commonly suffer little morbidity from the pathogens they persistently harbor. The mechanisms of this infection tolerance and the trade-off costs are poorly understood. We used exposure to a single dose of lipopolysaccharide (LPS) endotoxin as an experimental model of inflammation to compare the responses of the cricentine rodent Peromyscus leucopus, the white-footed deermouse, to that of Mus musculus, the standard laboratory model for pathogenesis studies. Four...

Data for: Topological defects produce kinks in biopolymer filament bundles

Qingda Hu, Maximilian Grill, Elliot Botvinick, Wolfgang Wall, Valentin Slepukhin & Alex Levine
Bundles of stiff filaments are ubiquitous in the living world, found both in the cytoskeleton and in the extracellular medium. These bundles are typically held together by smaller cross-linking molecules. We demonstrate, analytically, numerically, and experimentally, that such bundles can be kinked, that is, have localized regions of high curvature that are long-lived metastable states. We propose three possible mechanisms of kink stabilization: a difference in trapped length of the filament segments between two cross-links,...

Data from: Analysis of southern California mitigation banks with implications for The Wildlands Conservancy's Sacred Lands Network and Bluff Lake Reserve

Corrina Tapia
I conducted a qualitative analysis of mitigation banks in southern California, and from interviews with nine individuals associated with the banks or with mitigation tools, reveal the overall lack of cohesive understanding of the purpose and integrity of mitigation banks. This reveals the uncertainty in banking but also presents an opportunity to make recommendations on improvements to this prominent tool. This analysis also lends support to The Wildlands Conservancy as they establish their Sacred Lands...

Registration Year

  • 2021

Resource Types

  • Dataset


  • University of California, Irvine
  • University of California Los Angeles
  • University of Massachusetts Amherst
  • Jet Propulsion Lab
  • Colorado State University
  • University of California, Santa Cruz
  • University of California, Davis
  • Estación Biológica de Doñana
  • California State University, Long Beach
  • University of California, Merced