295 Works

Valentine Camp

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

Quail Ridge Reserve

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

Sedgwick Reserve

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

Kenneth S. Norris Rancho Marino Reserve

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

Sagehen Creek Field Station

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

A Strawberry Database: Geometric Properties, Images and 3D Scans

Adrien Durand-Petiteville, Dennis Sadowski & Stavros Vougioukas
1611 strawberries from different places and varieties are used to collect images, 3D scans as well as physical properties such as shape, width, height, and weight.

Influence of Relative Humidity on the Heterogeneous Oxidation of Secondary Organic Aerosol

Christopher Cappa, Ziyue Li & Katherine Smith
This dataset contains data from figures and model code used to generate figures in the paper "Influence of Relative Humidity on the Heterogeneous Oxidation of Secondary Organic Aerosol" by Li et al., published in Atmospheric Chemistry and Physics. A description of the work follows below. See read me files for details. Secondary organic aerosol (SOA) is a complex mixture of hundreds of semi‑volatile to extremely low‑volatility organic compounds that are chemically processed in the atmosphere,...

Defensive displays and chemical secretions of darkling beetles in the Mojave Desert

Tania Aguilar, , Meghan Proctor & Athena Schlereth
Many organisms often rely on chemical defenses to deter predators. However, the way in which invertebrates utilize chemical defenses has been relatively understudied. Darkling beetle species of the Eleodes and Coelocnemis genera exhibit defensive posturing followed by malodorous chemical secretions to signal their unpalatability towards potential predators. However, the metabolic costs and trade-offs associated with these mechanisms are unknown. It is also unclear whether certain beetle species utilize chemical defenses more readily than others. We...

PffBT4T

Varuni Dantanarayana
Conformational and energetic disorder in organic semiconductors reduces charge and exciton transport because of the structural defects, thus reducing the efficiency in devices such as organic photovoltaics and organic light-emitting diodes. The main structural heterogeneity is because of the twisting of the polymer backbone that occurs even in polymers that are mostly crystalline. Here, we explore the relationship between polymer backbone twisting and exciton delocalization by means of transient absorption spectroscopy and density functional theory...

Steroid concentrations in boar tissues

Trish Berger, Heidi Kucera, Alan Conley & Birgit Puschner
Synthesis and metabolism of steroids is highly interconnected within a tissue. The initial objective of these studies was to evaluate the influence of estrogens on the synthesis and metabolism of other steroids in the testis and other tissues. The aromatase inhibitor, letrozole, was used to inhibit testicular estrogen synthesis. Littermates from five different litters (potentially six boars from one litter) provided the testis, prostate, and liver tissues but only four boars (one from each of...

Groove Loops: A Collection of Repeating Multi-Instrumental Patterns

Petr Janata
This dataset contains 456 musical stimuli used in the series of studies reported in: Janata, P., Peterson, J., Ngan, C., Keum, B., Whiteside, H., & Ran, S. (2018). Psychological and Musical Factors Underlying Engagement with Unfamiliar Music. Music Perception, 36(2), 175-200. doi:10.1525/mp.2018.36.2.175

Human-wildlife interactions in Anza-Borrego Desert State Park

Ninfa Negrete, Sara Ramirez & Robert Wong
Transportation infrastructure, such as roads and highways, supports human activity but negatively affect wildlife habitat, populations, and entire ecosystems (Bennet et. al 2011). As road networks continue to expand, animals lose habitat and are confined to isolated fragments, with the possibility of being enclosed by roads. Road effects like habitat fragmentation is not well known in state parks. This study aims to examine some of the effects of road disturbance on wildlife in the Anza-Borrego...

Distribution and population estimates of the Borrego sand scorpion (Paruroctonus borregoensis)

Emma Korntheuer, Pearl Rakowski, Jack Choi & Sarkis Kasparian
Scorpions are important to the desert biome as prolific prey items, predators, and habitat modifiers. Our study set out to fill in the knowledge gap pertaining to the abundance and homing behavior of the Borrego dune scorpion, Paruroctonus borregoensi. A mark and recapture was conducted to determine if Borrego sand scorpions display site fidelity and as well as estimate population density in the Anza Borrego Desert in California. The Borrego sand scorpion displays no evidence...

Abiotic differences and anthropogenic interference affect foothill yellow-legged frog breeding

Sharon Tamir, Anna Szymanska, Amanda Callahan, Gina Lucas & Jeniffer Amezquita
As human presence rapidly introduces novel environmental pressures to native ecosystems, many species experience population declines. Sensitive taxa such as amphibians may be particularly vulnerable to such environmental disturbances. Rana boylii, the foothill yellow-legged frog and a California State Species of Special Concern, serves as a model for understanding the effect of anthropogenic interference, such as changing climate and disturbed habitats, on reproductive success. In this study, we measured egg mass abundance, abiotic characteristics of...

Mendocino meadow memory: legacy effects of land use on plant communities of Angelo Coast Range Reserve

Ary Sanchez-Amaya, Frida Perez, Jena Weinberger & Susan Glasser
Human alteration of landscapes has occurred consistently through actions such as development, tilling, agriculture, and fire management. Human land use can result in a legacy of exotic species dominance and increased competition, with negative impacts on native species richness and soil structure. Meadows within California have been affected by settlement due to their accessibility to humans and soil conditions that are ideal for agriculture. Prior to European settlement, meadows in Angelo Coast Range Reserve (ACRR)...

The adaptive value of leaf quaking in Populus tremuloides

Natalie Kim, Mark Makar, Alexander Osleger & Juliana Shenouda
Some Populus species have evolved a flattened petiole that causes their leaves to quake in mild wind. In this study, we performed one observational study and two experimental studies on quaking aspen (Populus tremuloides) to investigate three predominant hypotheses on the adaptive value of quaking: (1) herbivory reduction, (2) light permeation, and (3) temperature maintenance. Overall, we found less insect herbivory on branches that quake less. We also found that quaking allows more light into...

Life Cycle Modeling of Tech & Strategies for a Sustainable Freight System in California

Hanjiro Ambrose & Alissa Kendall
California’s freight transportation system is a vital part of the state’s economy, but generates a high portion of local pollution in parts of the state with poor air quality. In recognition of these challenges, Executive Order B-32-15 encourages adoption of advanced vehicle technologies and infrastructure, as well as the use of alternative energy and fuels in the freight sector. These measures are echoed in the state’s Sustainable Freight Action Plan. Most emissions reductions from freight...

Sex-specific evolution of relative leg size in Drosophila prolongata results from changes in the intersegmental coordination of tissue growth

David Michael Luecke & Artyom Kopp
Evolution of relative organ size is the most prolific source of morphological diversity, yet the underlying molecular mechanisms that modify growth control are largely unknown. Models where organ proportions have undergone recent evolutionary changes hold the greatest promise for understanding this process. Uniquely among Drosophila species, D. prolongata displays a dramatic, male-specific increase in the size of its forelegs relative to other legs. By comparing leg development between males and females of D. prolongata and...

Impacts of caudal autotomy on personality

Marcus Michelangeli, Brooke Melki-Wegner, Kate Laskowski, Bob Wong & David Chapple
Caudal autotomy, the voluntary shedding of a tail, is a last-ditch strategy used by many lizard species to escape from predators. There are several costs associated with caudal autotomy that may cause lizards to make behavioral adjustments during tail regeneration. These behavioral changes may be dependent upon individual differences in response to autotomy (e.g. trait or state-dependent differences) and/or the degree of tail loss, as many lizards have the capacity to only partially shed their...

Impacts of anthropogenic disturbance and insect abundance on Sonoran Desert bat activity

Amy Sue Law, , Emma McAndrews & Jess Stumpf
Rapid urbanization has been beneficial and detrimental to desert ecosystems. One group of organisms that are sensitive to such anthropogenic disturbance are bats. In this study, we examined bat abundance and composition in the Sonoran Desert in Southern California to assess how the bat community is affected by human disturbance and insect abundance. We observed bat calls and surveyed insect abundance at sites with high and low levels of human impact. We found that there...

Functional variants of DOG1 control seed chilling responses and variation in seasonal life history strategies in Arabidopsis thaliana

Alejandra Martinez-Berdeja, Michelle Stitzer, Mark A. Taylor, Miki Okada, Exequiel Ezcurra, Daniel E. Runcie & Johanna Schmitt
The seasonal timing of seed germination determines a plant's realized environmental niche, and is important for adaptation to climate. The timing of seasonal germination depends on patterns of seed dormancy release or induction by cold and interacts with flowering time variation to construct different seasonal life histories. To characterize the genetic basis and climatic associations of natural variation in seed chilling responses and associated life history syndromes, we selected 559 fully-sequenced accessions of the model...

Data from: Using an arbitrary moment predictor to investigate the optimal choice of prognostic moments in bulk cloud microphysics schemes

Adele A. Igel
Most bulk cloud microphysics schemes predict up to three standard properties of hydrometeor size distributions, namely, the mass mixing ratio, number concentration, and reflectivity factor in order of increasing scheme complexity. However, it is unclear whether this combination of properties is optimal for obtaining the best simulation of clouds and precipitation in models. In this study, a bin microphysics scheme has been modified to act like a bulk microphysics scheme. The new scheme can predict...

Data from: Conditioned place preference reveals ongoing pain in calves 3 weeks after disbudding

Sarah Adcock & Cassandra Tucker
Hot-iron disbudding, a routine procedure that prevents horn bud growth through cauterization, is painful for calves. The resulting burns remain sensitive to touch for weeks, but it is unknown whether calves experience ongoing, non-evoked pain. We evaluated conditioned place preference for analgesia in 44 calves disbudded or sham-disbudded 6 hours (Day 0) or 20 days (Day 20) before testing (n = 11/treatment). Calves were conditioned to associate the effects of a lidocaine cornual nerve block...

Pathogen genetic control of transcriptome variation in the Arabidopsis thaliana – Botrytis cinerea pathosystem

Nicole Soltis, Celine Caseys, Wei Zhang, Jason Corwin, Susanna Atwell & Daniel Kliebenstein
In plant-pathogen relations, disease symptoms arise from the interaction of the host and pathogen genomes. Host-pathogen functional gene interactions are well described while little is known about how the pathogen genetic variation modulates both organisms’ transcriptomes. To model and generate hypotheses on a generalist pathogen control of gene expression regulation, we used the Botrytis cinerea - Arabidopsis thaliana pathosystem and the genetic diversity of a collection of 96 B. cinerea isolates. We performed expression-based genome-wide...

Phylogenies of fungi isolated from the seagrass, Zostera marina

Cassandra Ettinger & Jonathan Eisen
Fungi in the marine environment are often neglected, despite that they having critical roles on land as decomposers, pathogens or beneficial endophytes. We used culture-dependent methods to survey the fungi associated with the seagrass, Zostera marina, and then placed these sequences in the fungal tree of life. Four different sequence alignments were generated, (1) an alignment to investigate seagrass isolates in the Basidiomycota and Zygomycota phyla, (2) an alignment to investigate seagrass isolates in the...

Registration Year

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    8
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    67
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    45
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    24

Resource Types

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Affiliations

  • University of California, Davis
    163
  • University of California, Berkeley
    5
  • United States Department of Agriculture
    4
  • United States Geological Survey
    3
  • University of Sao Paulo
    3
  • University of Minnesota
    2
  • Oak Ridge National Laboratory
    2
  • University of Wisconsin-Madison
    2
  • University of Miami
    2
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    2