42 Works

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...

Pluto and Charon limb profile topography

Jack Conrad
We derived updated and expanded topography datasets for Pluto and Charon. This is done through finding the body edge (i.e. the limb) in images, and with those body edge locations we can apply simple geographical techniques to produce limb profiles. The process involves some human intervention, but is primarily automation based. Our limb profile topography is useful for geologic and geophysical studies of Pluto and Charon. Additionally, we provide processed data of how we used...

Physical and biogeochemical drivers of alongshore pH and oxygen variability in the California Current System

Jerome Fiechter & Julia Cheresh
In the California Current System (CCS), the nearshore environment experiences natural exposure to low pH and reduced oxygen in response to coastal upwelling. Anthropogenic impacts further decrease pH and oxygen below biological thresholds, making the CCS particularly vulnerable to ocean acidification and hypoxia. Results from a coupled physical-biogeochemical model reveal a strongly heterogeneous alongshore pattern of nearshore pH and oxygen in the central CCS, both in their long-term means and trends. This spatial structuring is...

Runoff modeling of a coastal basin to assess variations in response to shifting climate and land use: Implications for managed recharge

Sarah Beganskas, Kyle Young, Andrew Fisher, Ryan Harmon & Sacha Lozano
We quantified hillslope runoff distribution in a coastal, mixed-use basin, the Pajaro Valley Drainage Basin (PVDB), under different climate and land use conditions, evaluating the potential for distributed stormwater collection coupled with managed aquifer recharge (DSC-MAR) to improve groundwater supply. We developed dry, normal, and wet climate scenarios using historic precipitation and temperature data, and we compared contemporary land use to pre-development land use by replacing developed areas in the model with plausible native vegetation...

Chemical shift-based methods in NMR structure determination

Santrupti Nerli, Andrew C. McShan & Nikolaos G. Sgourakis
Chemical shifts are highly sensitive probes that can be harnessed by NMR spectroscopists and structural biologists as conformational parameters to characterize a range of biological molecules. Traditionally, assignment of chemical shifts has been a labor-intensive process requiring numerous samples and a suite of multidimensional experiments. Over the past two decades, the development of complementary automated and computational approaches has bolstered the analysis, interpretation and utilization of chemical shifts for elucidation of high-resolution protein and nucleic...

The WeAllWalk Data Set

German Flores & Roberto Manduchi
This data set contains time series from inertial sensors carried by blind subjects walking through pre-determined routes In two buildings in the UCSC campus. The sensors include two MetaWear CPRO (obtaining a tri-axial accelerometer and gyroscope) and two iPhone 6 containing try-axial accelerometer, gyroscopes, and magnetometers. This data set is described in the paper: Flores, German, and Roberto Manduchi. "WeAllWalk: An Annotated Data Set of Inertial Sensor Time Series from Blind Walkers", Proceedings of the...

Fractional crystallization of a Martian magma ocean and formation of a thermochemical boundary layer at the base of the mantle

Garrett Zeff
BurnMan and pMELTS outputs for simulations of fractionally crystallizing magma oceans on Mars.

Field courses narrow demographic achievement gaps in ecology and evolutionary biology

Roxanne Beltran, Erin Marnocha, Alexandra Race, Don Croll, Gage Dayton & Erika Zavaleta
Disparities remain in the representation of marginalized students in STEM. Classroom-based experiential learning opportunities can increase student confidence and academic success; however, the effectiveness of extending learning to outdoor settings is unknown. Our objectives were to examine 1) demographic gaps in ecology and evolutionary biology (EEB) major completion, college graduation, and GPAs for students who did and did not enroll in field courses, 2) whether under-represented demographic groups were less likely to enroll in field...

Año Nuevo Island Animal Count: analyzing citizen science pinniped counts from drone imagery

Sarah Wood
Fluctuations in marine mammal abundance can reveal changes in local ecosystem health and inform conservation strategies. Unmanned aircraft systems (UAS) such as drones are increasingly being used to photograph and count marine mammals in remote locations; however, counting animals in images is a laborious task. Crowd-sourced science has the potential to considerably reduce the time required to conduct these censuses but must first be validated against expert counts to confirm accuracy. Our objectives were to...

The WeAllWalk Data Set

German Flores & Roberto Manduchi
This data set contains time series from inertial sensors carried by blind subjects walking through pre-determined routes In two buildings in the UCSC campus. The sensors include two MetaWear CPRO (obtaining a tai-axial accelerometer and gyroscope) and two iPhone 6 containing try-axial accelerometer, gyroscopes, and magnetometers.

Utilizing field collected insects for next generation sequencing: effects of sampling, storage, and DNA extraction methods

Kimberly Ballare, Nathaniel Pope, Antonio Castilla, Sarah Cusser, Richard Metz & Shalene Jha
DNA sequencing technologies continue to advance the biological sciences, expanding opportunities for genomic studies of non-model organisms for basic and applied questions. Despite these opportunities, many next-generation sequencing protocols have been developed assuming a substantial quantity of high molecular weight DNA (>100 ng), which can be difficult to obtain for many study systems. In particular, the ability to sequence field-collected specimens that exhibit varying levels of DNA degradation remains largely unexplored. In this study we...

Heat flux and temperature at depth beneath InSight landing site through time

Szilard Gyalay, Francis Nimmo, Ana-Catalina Plesa & Mark Wieczorek
The heat flux and thus temperature gradient of the Martian crust is critical for comparison with measurements of crustal properties. This allows for constraints upon the inferred thermal history of Mars. Each file contains the heat flux and temperature at several depths as a function of time after Mars formed, but assuming different crustal properties.

Gardener demographics, experience, and motivations drive differences in plant species richness and composition in urban gardens

Stacy Philpott, Monika Egerer, Peter Bichier, Hamutahl Cohen, Roseann Cohen, Heidi Liere, Shalene Jha & Brenda Lin
Urban agriculture has received considerable attention for its role in supporting biodiversity and ecosystem services, and health and well-being for growing urban populations. Urban gardens managed with agroecological practices and higher plant diversity support more biodiversity and may support higher crop production. Plant selection in gardens is a function of temperature and environmental conditions and also depends on gardener socio-demographic characteristics, motivations for gardening, and gardening experience. In this study, we examined how plant richness...

Data from: Global hotspots for coastal ecosystem-based adaptation

Holly P. Jones, Barry A. Nickel, Tanja Srebotnjak, Will Turner, Mariano Gonzalez-Roglich, Erika Zavaleta & David G. Hole
Helping the world’s coastal communities adapt to climate change impacts requires evaluating the vulnerability of coastal communities and assessing adaptation options. This includes understanding the potential for ‘natural’ infrastructure (ecosystems and the biodiversity that underpins them) to reduce communities’ vulnerability, alongside more traditional ‘hard’ infrastructure approaches. Here we present a spatially explicit global evaluation of the vulnerability of coastal-dwelling human populations to key climate change exposures and explore the potential for coastal ecosystems to help...

Data for Drought-Net rainfall shelters did not cause non-drought effects on photosynthesis for California central coast plants.

Michael Loik
Rainfall interception shelters are frequently used to study the ecological consequences of drought. One common shelter design employs V-shaped plastic troughs spaced on a supporting frame to intercept rainfall. Shading, reflection, and infrared radiation may alter the radiative environment under shelters in ways independent of their intended effect on soil moisture. We measured microclimate and several photosynthetic variables for watered potted plants under rain-out shelters and in open-air, unsheltered plots. We tested whether the shelter...

Microaggressions Self-Defense: A Workshop for Responding to Microaggressions (Handout)

Christy Byrd
Microaggressions are subtle verbal and non-verbal slights based on group membership, and they are ubiquitous in the lives of racial minorities, women, and LGBTQ individuals (Sue 2010). This is a handout accompanying a paper introducing a role-playing based exercise on effective responses to microaggressions. The workshop draws on the two previous prejudice responding workshops of Plous (2000) and Lawson et al. (2010) but integrates research-based strategies.

Walruses produce intense impulse sounds by clap-induced cavitation during breeding displays

Colleen Reichmuth & Ole Næsbye Larsen
Male walruses produce the longest continuous reproductive displays known in the animal kingdom to convey their individual fitness to potential rivals, and possibly to potential mates. Here we document the ability of a captive walrus to produce intense, rhythmic sounds through a non-vocal pathway involving deliberate, regular collision of the fore flippers. High-speed videography linked to an acoustic onset marker revealed sound production through cavitation, with the acoustic impulse generated by each forceful clap exceeding...

Microsatellite genotypes and extraction plate positions from publication: Genetic structure across urban and agricultural landscapes reveals evidence of resource specialization and philopatry in the Eastern carpenter bee, Xylocopa virginica L.

Kimberly Ballare & Shalene Jha
Human activity continues to impact global ecosystems, often by altering the habitat suitability, persistence, and movement of native species. It is thus critical to examine the population genetic structure of key ecosystem-service providers across human-altered landscapes to provide insight into the forces that limit wildlife persistence and movement across multiple spatial scales. While some studies have documented declines of bee pollinators as a result of human-mediated habitat alteration, others suggest that some bee species may...

Winter-run Chinook salmon resource selection function 2020

Peter Dudley
We use historic aerial redd surveys of Sacramento River winter-run Chinook salmon, coupled with 2D hydraulic modeling, and apply Bayesian, multivariate polynomial, logistic regression to calculate spawning resource selection functions (RSFs) based on water velocity and depth, and examine their interactions with water temperature. Our methods resulted in univariate and multivariate resource selection functions with no interaction between velocity and depth preference, but credible interactions between both velocity and depth preference with changing temperature. Preferred...

Exploring the effects of invasion on plant morphology of purple loosestrife (Lythrum salicaria)

Alexander Krohn, Caroline DeVan, Lizz Waring & Liz Shea
This dataset is for use in the CURE titled Effects of Invasion on Plant Morphology of Purple Loosestrife (Lythrum salicaria). The dataset is meant to be used as a practice, or ready-to-use dataset for instructors so that all instructors can start from the same point with the same data. If you would like to download additional data, or use a species other than L. salicaria, please visit the CUREnet website and download the Data Download...

Fumigant use on California strawberry fields, 2004-2013

Julie Guthman
This dataset contains an analysis of chemical fumigant usage for nine major strawberry producing counties in California from 2004 to 2013. Five counties are production counties; four are nursery counties. Raw data on all pesticide applications on a county basis was collected from California's Pesticide Use Reporting System and filtered by pesticide category (fumigant) and commodity (strawberry). These data are geo-coded by Township-Range-Section. The data set also contains pivot tables and charts that show trend...

Ant-scale mutualism increases scale infestation, decreases folivory, and disrupts biological control in restored tropical forests

Andy Kulikowski
Ant-hemipteran mutualisms can have positive and negative effects on host plants depending on the level of hemipteran infestation and plant protection conferred by ants against folivory. Differential effects of such mutualisms on plant survival are well documented in undisturbed and ant-invaded systems, but few have explored how anthropogenic disturbance affects interactions between hemipterans and native ant species and what the consequences may be for recovering ecosystems. Within a fragmented landscape in Costa Rica, restored tropical...

Data from: Krill hotspot formation and phenology in the California Current Ecosystem

Jerome Fiechter
In the California Current Ecosystem (CCE), krill represent a key link between primary production and higher trophic level species owing to their central position in the food web and tendency to form dense aggregations. However, the strongly advective circulation associated with coastal upwelling may spatiotemporally decouple the occurrence and persistence of krill hotspots from phytoplankton biomass and nutrient sources. Results from a physical-biological model provide insights into fundamental mechanisms controlling the phenology of krill hotspots...

Supporting data for Loik et al. 2017 Wavelength-Selective Solar Photovoltaic Systems: Powering greenhouses for plant growth at the food-energy-water nexus. Earth's Future

Michael Loik
Global renewable electricity generation capacity has rapidly increased in the past decade. Increasing the sustainability of electricity generation and the market share of solar photovoltaics (PV) will require continued cost reductions or higher efficiencies. Wavelength-Selective Photovoltaics (WSPVs) combine luminescent solar cell technology with conventional Silicon-based PV, thereby increasing efficiency and lowering the cost of electricity generation. WSPVs absorb some of the blue and green wavelengths of the solar spectrum but transmit the remaining wavelengths that...

Female Breeding Histories at Año Nuevo

R Condit, Joanne Reiter, Patricia Morris & Burney Le Boeuf
The elephant seal (Mirounga angustirostris) breeding colony at Año Nuevo, California, was founded in 1961, and since monitored closely until the present. Since 1968 a research group at the University of California, Santa Cruz, has studied it in detail. Individually identified females were monitored during the breeding season, and pupping records of many throughout their lifetimes were assembled. We address here the maximum reproductive success of females using the lifetime breeding histories. Females lived to...

Registration Year

  • 2020
    21
  • 2019
    7
  • 2018
    6
  • 2017
    3
  • 2016
    2
  • 2015
    1
  • 2013
    2

Resource Types

  • Dataset
    42

Affiliations

  • University of California, Santa Cruz
    35
  • The University of Texas at Austin
    2
  • Seattle University
    2
  • Technical University of Berlin
    2
  • Colorado School of Mines
    2
  • Delaware Museum of Natural History
    1
  • University of Montana
    1
  • University of Washington
    1
  • Utah State University
    1
  • Northern Illinois University
    1