159 Works

Hyaluronic acid-binding, anionic, nanoparticles inhibit ECM degradation and restore compressive strength in aggrecan-depleted articular cartilage explants

Marcus Deloney, Alyssa Panitch, Blaine Christiansen, Parssa Garoosi & Vanessa Dartoura
Joint trauma results in the production of inflammatory cytokines that stimulate the secretion of catabolic enzymes which degrade articular cartilage. Molecular fragments of the degraded articular cartilage further stimulate inflammatory cytokine production with this process eventually resulting in post-traumatic osteoarthritis (PTOA). The loss of aggrecan is considered an early step in the progression of PTOA. Aggrecan, composed of a core protein linked to sulfated glycosaminoglycans (GAGs), associates with hyaluronic acid (HA) via a link protein....

Data From: Polygenic basis and the role of genome duplication in adaptation to similar selective environments

Matthew Campbell, Eric Anderson, John Carlos Garza & Devon Pearse
Genetic changes underlying adaptation vary greatly in terms of complexity and, within the same species, genetic responses to similar selective pressures may or may not be the same. We examine both complex (supergene) and simple (SNP) genetic variants occurring in populations of rainbow trout (Oncorhynchus mykiss) independently isolated from ocean access and compared them to each other and to an anadromous below-barrier population representing their ancestral source to search for signatures of both parallel and...

Cargo routing and disadvantaged communities

Anmol Pahwa & Miguel Jaller
Freight is fundamental to economic growth, however, the trucks that haul this freight are pollution intensive, emitting criteria pollutants and greenhouse gases at high rates. The increasing volume and time-sensitivity of freight demand over the past decade has encouraged carriers to take the fastest route, which is often not an eco-friendly route. The increase in urban freight movement has thus brought along negative externalities such as congestion, emissions, and noise into cities. Alternative fuel technologies,...

Population and community-level impacts of increased fire frequency in serpentine chaparral

Miranda Martin, Casey Pfahler, Francesca Shackleford & Emily Wapman
Wildfires are natural processes that revitalize the native biodiversity of many habitats by clearing landscapes and creating sunlight rich areas with low competition. This process occurs in the serpentine chaparral of California, which is home to a variety of fire obligate seeders, including whiteleaf manzanita (Arctostaphylos viscida) and MacNab cypress (Cupressus macnabiana), as well as fire facultative seeders such as chamise (Adenostoma fasciculatum). In our study, we surveyed serpentine chaparral habitats in sites with different...

The impact of shallow landslides on primary productivity

Addison Eftekhari, Carly Lam, Francesca Penny & Ian Silberstein
Shallow landslides provide us with a closer look at succession in response to disturbances and their long-term impact on a landscape. Shallow landslides are commonly found in low hills of coastal California, and while research has been conducted on the impacts to human infrastructure and habitation, effects on plant communities and subsequent succession has not been well researched. This study looked at the effect of shallow landslides on vegetation in the grasslands of UC Santa...

Long-term changes in composition of old-growth mixed evergreen forests in Mendocino County

, Charlie Schiebl, Gabriel Perez & John Salib
Abiotic factors have caused changes in old-growth California forests. These changes may be indicators of environmental stressors such as decreases in precipitation, increases in temperature, and changes in historic fire regimes. We aim to examine these changes by doing a 40-year follow-up study on Ashley Boren’s 1981 undergraduate thesis, conducted at Angelo Coast Reserve in Mendocino County, California. The purpose of this study is to examine whether or not the predictions made in 1981 would...

The effects of sunlight and slope on the lichen community of the Sweeney Granite Mountains reserve

Kha Cung, , & Samantha Spiegel
Lichen communities are essential to their ecosystems as they provide a means of nitrogen fixation, suitable growing conditions, and resources to other organisms across diverse environments. Their community structure can be impacted by changes in abiotic factors such as temperature, pollution, precipitation, and sunlight. It is widely assumed that lichen prefer to grow on the northern faces of their substrates because it is believed they experience less desiccation and UV radiation from sunlight exposure. This...

Data from \"Quantification of major particulate matter species from a single filter type using infrared spectroscopy – Application to a large-scale monitoring network\"

Ann Dillner, Bruno Debus, Andrew T. Weakley, Satoshi Takahama, Kathryn George, Bret Schichtel, Scott Copeland & Anthony Wexler
This data set contains FT-IR data obtained from spectra of PTFE filters routinely in IMPROVE network during the time period 2015-2017, as well as the corresponding routine IMPROVE data for all ( ~160) IMPROVE sites except Korea. The data include PM2.5 aerosol concentrations measurements for organic carbon (OC), elemental carbon (EC), total carbon (TC), sulfate, nitrate, silicon, aluminum, calcium, titanium, iron, mass and light absorption. The data are in ug/m3. Some samples are excluded based...

Structure and distribution of chalky deposits in the Pacific oyster using x-ray computed tomography (CT)

Roxanne Banker & Dawn Sumner
Oysters are unusual among bivalves in that they possess chambers, often filled with soft, chalky calcite, that are irregularly scattered throughout the shell. Because the function of these so-called chalky deposits is still unclear, evaluating the growth and distribution of chalk is important for elucidating the ecological function of this unique shell trait. Specimens of the Pacific oyster Magallana gigas, an oyster well known for chalk expression, were grown in Bodega Harbor, Bodega Bay, CA....

Quantitative interactions: the disease outcome of Botrytis cinerea across the plant kingdom

Celine Caseys, Gongjun Shi, Nicole Soltis, Raoni Gwinner, Jason Corwin, Susanna Atwell & Daniel Kliebenstein
Botrytis cinerea is a fungal pathogen that causes necrotic disease on more than a thousand known hosts widely spread across the plant kingdom. How B. cinerea interacts with such extensive host diversity remains largely unknown. To address this question, we generated an infectivity matrix of 98 strains of B. cinerea on 90 genotypes representing eight host plants. This experimental infectivity matrix revealed that the disease outcome is largely explained by variations in either the host...

Phylogeny, Evolution, and Biogeography of the North American Trapdoor Spider family Euctenizidae (Araneae: Mygalomorphae) and the discovery of a new ‘Endangered Living Fossil’ along California’s Central Coast

Jason E. Bond, Chris A. Hamilton, Rebecca L. Godwin, Joel M. Ledford & James. Starrett
We report here the discovery of a remarkable new monotypic mygalomorph spider genus, known only from one geographical location along the central coast of California. The single relict species comprising Cryptocteniza kawtakn. gen. n. sp., is morphologically distinct and geographically isolated from other related genera, with its closest phylogenetic relatives found much further to the east in New Mexico and Arizona. Using a phylogenomic approach employing anchored hybrid enrichment, we reconstruct the evolutionary history of...

Shrubland vegetation topographic facets of Southern California

Allan Hollander & Emma Underwood
To approximate the distribution of shrubland species based on their postfire reproductive strategy (resprouter, seeder, and facultative seeder) across Southern California, we created a raster layer subdividing the landscape into a number of different facet classes. This raster dataset is at 30 meters pixel resolution and contains 12 different landscape facet classes based on vegetation and physiography. Specifically, the facets included several different vegetation types based on the California Wildlife Habitat Relations (WHR) classification (three...

California subalpine forest post-fire diversity and productivity

Emily Brodie
High severity fire may promote or reduce plant understory diversity in forests. However, few empirical studies test long-standing theoretical predictions that productivity may help to explain observed variation in post-fire plant diversity. Support for the influence of productivity on disturbance-diversity relationships is found predominantly in experimental grasslands, while tests over large areas with natural disturbance and productivity gradients are few and have yielded inconsistent results. Here, we measured the response of post-fire understory plant diversity...

Perspective piece: Comparison of eastern and western North American monarch butterflies

Micah Freedman
Monarch butterflies are a species of conservation priority due to declining overwintering populations in both eastern and western North America. Declines in western overwintering monarchs—more than 99.9% since monitoring began—are especially acute. However, the degree to which western monarchs are a distinct biological entity is uncertain. In this review, we focus on phenotypic and genetic differentiation between eastern and western monarchs, with the goal of informing researchers and policy-makers who are interested in monarch conservation....

The deep sea is a hot spot of fish body shape evolution

Christopher Martinez
Deep sea fishes have long captured our imagination with striking adaptations to life in the mysterious abyss, raising the possibility that this cold, dark ocean region may be a key hub for physiological and functional diversification. We explore this idea through an analysis of body shape evolution across ocean depth zones in over 3,000 species of marine teleost fishes. We find that the deep ocean contains twice the body shape disparity of shallow waters, driven...

Organizational structure and institutional types of community water systems in California

Kristin Dobbin & Amanda Fencl
Dataset accompanying Dobbin & Fencl (2021) publication entitled "Institutional diversity and safe drinking water provision in the United States" including secondary data from the U.S. EPA and California State Water Resources Control Board as well as the author-produced 26-type organizational structural and institutional coding of Community Water Systems in California.

Data for project: A quantitative investigation into the impact of partially automated vehicles on vehicle miles travelled in California

Scott Hardman
We investigate travel changes in partially automated electric vehicles. Partial automation can control vehicle speed and steering using sensors that monitor the external environment. We use survey results from survey responses including 940 users of partial automation, including 628 who have Tesla Autopilot and 312 with systems from other automakers. Autopilot users report using automation more than users of other partial automation systems. Autopilot has the largest impact on travel, notably 36% of Autopilot users...

Genetic structure in a cnidarian symbiont is correlated with geographic location, environment, and host species

Brendan Cornwell & Luis Hernández
Corals and cnidarians form symbioses with dinoflagellates across a wide range of habitats from the tropics to temperate zones. Notably, these partnerships create the foundation of coral reef ecosystems and are at risk of breaking down due to climate change. This symbiosis couples the fitness of the partners, where adaptations in one species can benefit the holobiont. However, the scales over which each partner can match their current - and future - environment are largely...

Morphology and herbivory of Egregia menziesii at sites from California to Washington

Nicholas Burnett, Eric Armstrong, Rosemary Romero, Charlotte Runzel & Richelle Tanner
Herbivores can drastically alter the morphology of macroalgae by directly consuming tissue and by inflicting structural wounds. Wounds, in particular, can result in large amounts of tissue breaking away from macroalgae, amplifying the damage initially caused by herbivores. Herbivores that commonly wound macroalgae often only occur over a portion of a macroalga’s lifespan or geographic range. However, we know little about the influence of these periodic or regional occurrences of herbivores on the large-scale seasonal...

A preliminary framework for magmatism in modern continental back-arc basins and its application to the Triassic-Jurassic tectonic evolution of the Caucasus

Dylan Vasey, Eric Cowgill & Kari Cooper
In contrast to intraoceanic back-arc basins, extension within a continental back-arc basin initiates within continental rather than oceanic lithosphere. The geochemical characteristics of magmatic rocks within continental back-arc basins are poorly understood relative to their intraoceanic counterparts. Here, we compile published geochemical data from five modern continental back-arc basins – the Okinawa Trough, Bransfield Strait, Tyrrhenian Sea, Patagonia plateau, and Aegean Sea/Western Anatolia – to establish a geochemical framework for continental back-arc magmatism. This analysis...

Snail mucus increases the CO2 efflux of biological soil crusts

Shelby Rinehart, Netta Shamir Weller & Dror Hawlena
Biological soil crusts (hereafter, biocrusts) are communities of microorganisms that regulate key ecosystem processes such as water distribution, soil erosion, and nutrient cycling in drylands worldwide. The nature of biocrust function can be influenced by multiple environmental factors, including climatic conditions (e.g., precipitation), interactions with plants, and anthropogenic disturbances. Animal regulation of biocrust function has received less research attention, focusing primarily on livestock trampling and to a much lesser extent on biocrust consumption by mesofauna....

Drosophila enhancer adult bristle expression assay using UAS sv-RNAi

David Luecke
Data from manuscript "Sex-specific evolution of a Drosophila sensory system via interacting cis- and trans-regulatory changes" by D Luecke, G Rice, and A Kopp. This study examines the regulation of expression for the chemosensory bristle specifier gene Pox neuro, which has expanded expression into ancestrally mechanosensory bristles in male D. prolongata. Flourescent assays show qualitativetly expanded expression driven by the D. prolongata allele relative to enhancers from sister species in the developing pupal leg. Adult...

The role of gender in consumer markets for electric vehicles

Kenneth Kurani & Koral Buch
This dataset contains data from a survey of new-car buying households in 13 US states conducted December 2014 to January 2015. The original study is described in these technical reports: Kurani, K S., N. Caperello, J. TyreeHageman New Car Buyers' Valuation of Zero-Emission Vehicles: California, Institute of Transportation Studies, University of California, Davis, Research Report UCD-ITS-RR-16-05 (2016). https://escholarship.org/uc/item/28v320rq Kurani, K.S., N. Caperello, J. TyreeHageman NCST Research Report: Are We Hardwiring Gender Differences into the Market...

Invigoration or enervation? Figure data and code

Adele Igel & Susan Van Den Heever
This repository contains the figure data and code required to generate the figures that appear in Igel and van den Heever (2021) Invigoration or enervation of convective clouds by aerosols? in Geophysical Research Letters. We present new theoretical calculations which starkly contrast previous results. Prior foundational work suggested that aerosols strongly invigorate convective cloud updrafts via changes to cold-phase processes. We show that the peak magnitude of invigoration by this mechanism is substantially reduced for...

California Drinking Water Source Assessment Program – UC Davis Information Center for the Environment

Leah Walker & Paul Collins
The California Drinking Water Source Assessment Program (DWSAP) was developed by the California Department of Public Health (CDPH) to provide information to communities that wish to develop local programs to protect their sources of drinking water. ICE was contracted with CDPH in 1999 to provide a wide range of technical services in support of this program, including the development of a statewide, standardized protocol to GPS all drinking water sources and treatment facilities in the...

Registration Year

  • 2021

Resource Types

  • Dataset
  • Journal Article
  • Audiovisual


  • University of California, Davis
  • Oklahoma State University
  • San Diego State University
  • George Mason University
  • Wittenberg University
  • Centre d'Etudes Biologiques de Chizé
  • Oregon State University
  • University of Nevada Reno
  • University of Chicago
  • Agricultural Research Service