295 Works

Data from: Comparisons of Late Ordovician ecosystem dynamics before and after the Richmondian Invasion reveal consequences of invasive species in benthic marine paleocommunities

Hannah Kempf, Ian Castro, Ashley Dineen, Carrie Tyler & Peter Roopnarine
A thorough understanding of how communities respond to extreme changes, such as biotic invasions, is essential to manage ecosystems today. Here we constructed fossil food webs to identify changes in Late Ordovician (Katian) shallow marine paleocommunity structure and functioning before and after the Richmondian Invasion, a well-documented ancient invasion. Food webs were compared using descriptive metrics and Cascading Extinction on Graphs models. Richness at intermediate trophic levels was underrepresented when using only data from the...

Data from: Frequency-dependent fitness and reproductive dynamics contribute to habitat segregation in sympatric Jewelflowers

Kyle Christie & Sharon Y. Strauss
Coexistence results from a complex suite of past and contemporary processes including biogeographic history, adaptation, ecological interactions, and reproductive dynamics. Here we explore drivers of local micro-parapatry in which two closely related and reproductively isolated Streptanthus species (Jewelflower, Brassicaceae) inhabit continuous or adjacent habitat patches and occur within seed dispersal range, yet rarely overlap in fine-scale distribution. We find some evidence for abiotic niche partitioning and local adaptation, however differential survival across habitats cannot fully...

Data from: Feeding and damage-induced volatile cues make beetles disperse and produce a more even distribution of damage for sagebrush

Richard Karban & Louie Yang
1. Induced plant responses to herbivory are common and we have learned a lot about the mechanisms of induced resistance and their effects on herbivore performance. We know less about their effects on herbivore behavior and especially on spatial patterns of damage. 2. Theoretical models predict that induced responses can cause patterns of damage to become aggregated, random, or even. A recent model predicted that informed herbivore movement coupled with communication between plants would make...

Data from: Attacks on genetic privacy via uploads to genealogical databases

Doc Edge & Graham Coop
Direct-to-consumer (DTC) genetics services are increasingly popular for genetic genealogy, with tens of millions of customers as of 2019. Several DTC genealogy services allow users to upload their own genetic datasets in order to search for genetic relatives. The statement that a user's uploaded genome shares one or more segments in common with that of a target person in the database---that is, that the two genomes share one or more regions identical by state (IBS)---reveals...

Data from: Evolved phenological cueing strategies show variable responses to climate change

Collin B. Edwards & Louie H. Yang
Several studies have documented a global pattern of phenological advancement that is consistent with ongoing climate change. However, the magnitude of these phenological shifts is highly variable across taxa and locations. This variability of phenological responses has been difficult to explain mechanistically. To examine how the evolution of multi-trait cueing strategies could produce variable responses to climate change, we constructed a model in which organisms evolve strategies that integrate multiple environmental cues to inform anticipatory...

Data from: Efficacy of masks and face coverings in controlling aerosol particle emission from expiratory activities

Sima Asadi, William Ristenpart, Santiago Barreda, Anthony Wexler, Nicole Bouvier & Christopher Cappa
The dataset provided here is associated with the work "Efficacy of masks and face coverings in controlling aerosol particle emission from expiratory activities," by Asadi et al. This includes measurements made of the influence of different types of face coverings (surgical masks, both vented and unvented N95 respirators, and homemade fabric and paper towel masks) on the emission of micron-scale aerosols from various expiratory activities (coughing, breathing, speaking).

Data from: Local government contribution to recovery of the giant gartersnake (Thamnophis gigas)

Steven Greco
Recovery of a threatened or endangered species usually requires conservation and mitigation actions at the local level across the species' entire range (i.e., geographic limits of a species' spatial distribution). Depending on the size of the range it could involve numerous or few jurisdictions. Under the federal Endangered Species Act an optional off-set program allows local governments to create a Habitat Conservation Plan (HCP) to guide mitigative actions (streamlining permitting) and in the state of...

Bayesian total-evidence inference resolves the position of the ant genus Phaulomyrma (Hymenoptera, Formicidae)

Zachary Griebenow
Although molecular data have proven indispensable in confidently resolving the phylogeny of many clades across the tree of life, these data may be inaccessible for certain taxa. The resolution of taxonomy in the ant subfamily Leptanillinae is made problematic by the absence of DNA sequence data for leptanilline taxa that are known only from male specimens, including the monotypic genus Phaulomyrma Wheeler & Wheeler. Focusing upon the considerable diversity of undescribed male leptanilline morphospecies, the...

Supporting data for: The setup and relaxation of spring upwelling in a deep, rotationally influenced lake

Derek Roberts & S. Geoffrey Schlaodow
Supporting data for the manuscript "The setup and relaxation of spring upwelling in a deep, rotationally influenced lake" accepted for publication in Limnology and Oceanography in November 2020. The data herein were collected at Lake Tahoe, CA/NV, USA in May-June, 2018 as part of a collaboration between the UC Davis Tahoe Environmental Research Center, the UC Davis Bodega Marine Lab, and the Stanford Environmental Fluid Mechanics Laboratory. The goal of this data collection effort was...

Factors affecting woodrat abundance over 70 years

Wolfgang Abad, Jose Morales-Doo, Carly Pomeroy & Adrienne Ung
Woodrats are ecosystem engineers that can increase biodiversity by physically changing the environment. In doing so, they alter landscapes and increase the number of microhabitats for other organisms. In order to better understand woodrats’ role in their ecosystem, we surveyed big-eared woodrat (Neotoma macrotis) houses in Hastings Natural History Reservation located in Monterey County, California. For each house, we determined its usability and measured its size. We found a 26 percent increase in population density...

Effects of volatile compounds in California bay trees (Umbellularia californica) on vegetation growth and insect herbivory

Ashley Adornato, Hannah Gerber, Sarah Haas & Jennifer Perez
Secondary metabolites are volatile compounds produced by plants that can be used as defense mechanisms for reducing stressors such as herbivory and competition. Leaves, roots, and stems of California bay trees (Umbellularia californica) get their notable aroma from secondary metabolites called monoterpenes, which are allelopathic constituents in many other plants, such as eucalyptus. In this study, we investigated the potential allelopathic and anti-herbivory effects of California bay trees by examining their understory composition, germination rates...

Bird community interactions at water sources at Hastings Natural History Reservation

Christina Cen, Killian Fay, Joselyne Jaramillo & Jason Ku
In seasonally dry areas, artificial water sources become a gathering place for a variety of avian species, leading to interactions between birds whose niches otherwise do not overlap. To maximize water use while reducing negative costs associated with conflict and predation, birds adopt anti-predation behaviors and engage in differing levels of tolerant and conflict interactions. In order to better understand how birds interact and behave at artificial water resources, we examined whether species and flock...

Acorn woodpeckers (Melanerpes formicivorus) exhibit more predator avoidance behavior post-fire

Emily Drake, , Youssef Hanna & Johnson Ku
Climate change has increased the frequency of wildfires globally. This increase in wildfires causes many animals to adjust their behaviors in order to cope with the more regular disturbances occurring in their habitats. It is often thought that birds are less affected by disturbances such as fire because of their ability to easily relocate by flying, but species with high levels of territoriality, such as acorn woodpeckers (Melanerpes formicivorus), may be more greatly affected by...

The EITC Does Not Automatically Stabilize Income for All in a Recession. Policy Brief Vol.2, No.1

Hilary Hoynes Marianne Bitler

The Impact of Poverty on a Child’s Social and Emotional Competence. Policy Brief Vol.1, No.10

Ross A. Thompson Abby C. Winer

Penn World Table 8.1

Robert Inklaar Robert C. Feenstra

Kendall-Frost Mission Bay Marsh 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...

San Joaquin Marsh 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...

Younger Lagoon 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...

Angelo Coast Range Reserve

Information Manager UCNRS
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 environments for...

Fort Ord Natural 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...

Steele/Burnand Anza-Borrego Desert Research Center

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...

Data for analysis of snowmelt timing as a determinant of inflow mixing in Lake Tahoe

Derek Roberts, Shohei Watanabe & S. Geoffrey Schladow
This dataset includes data files pertinent to the manuscript, "Snowmelting timing as a determinant of inflow mixing," accepted for publication in Water Resources Research in January 2018. Included data were used for an analysis of relative stream-lake conditions as they pertain to winter climate conditions and the subsequent mixing of snowmelt inflows into the lake. Included with each of the six files listed below is a [FILENAME]_Reference.txt file with details on data collection, curation, and...

Coastal dune invasion and restoration at Point Reyes: the ecology of European sea rocket, Cakile maritime

Shay McGraw, Jay Luce Nelson, Yuxin Shen & Aidé Villegas
California coastal dune ecosystems are prime targets for conservation and restoration efforts due to their high native plant diversity and rates of endemism. Invasive dune species such as European sea rocket (Cakile maritima) may disrupt key ecosystem processes by altering dune physical processes and outcompeting native species, decreasing the success of the endangered species beach layia (Layia carnosa) and Tidestrom's lupine (Lupinus tidestromii) at Point Reyes National Seashore in Marin County, California. We investigated potential...

Data deposition for Complex electrophysiological remodeling in postinfarction ischemic heart failure

Bence Hegyi & Ye Chen-Izu
Heart failure (HF) following myocardial infarction (MI) is associated with high incidence of cardiac arrhythmias. Development of therapeutic strategy requires detailed understanding of electrophysiological remodeling. However, changes of ionic currents in ischemic HF remain incompletely understood, especially in translational large animal models. Here, we systematically measure the major ionic currents in ventricular myocytes from the infarct border and remote zones in a porcine model of post-MI HF. We recorded eight ionic currents during the cell’s...

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