63 Works

Parasites in kelp-forest food webs increase food-chain length, complexity, and specialization, but reduce connectance

Dana Morton & Kevin Lafferty
We explored whether parasites are important in kelp forests by examining their effects on a high-quality, high-resolution kelp-forest food web. After controlling for generic effects of network size, parasites affected kelp-forest food web structure in some ways consistent with other systems. Parasites increased the trophic span of web, increasing top predator vulnerability and the longest chain length. Unique links associated with parasites, such as concomitant predation (consumption of parasites along with their hosts by predators)...

Data from: A food web including parasites for kelp forests of the Santa Barbara Channel, California

Dana Morton, Cristiana Antonino, Farallon Broughton, Dykman Lauren, Armand Kuris & Kevin Lafferty
We built a high-resolution topological food web for the kelp forests of the Santa Barbara Channel, California, USA that includes parasites and significantly improves resolution compared to previous webs. The 1,098 nodes and 21,956 links in the web describe an economically, socially, and ecologically vital system. Nodes are broken into life-stages. There are 549 free-living life-stages (comprising 492 species from 21 Phyla) and 549 parasitic life-stages (comprising 450 species from 10 Phyla). Links represent three...

Epistolary Pamphlets

Rachael King & Edwin Roland
These spreadsheets show the results of an effort to identify the epistolary pamphlet genre within the ECCO-TCP database. Sheet 1 shows the model's predictions of whether a particular text was an epistolary pamphlet while Sheet 2 identifies the tokens used to build the model. Overall, the model was able to identify the genre with 76 percent accuracy.

Supporting information for: A pilot experiment on infrasonic lahar detection at Mount Adams, Cascades: Ambient infrasound and wind-noise characterization at a quiescent stratovolcano: time-lapse camera images

Richard Sanderson, Robin Matoza, Rachel Haymon & Jamison Steidl
Erosion, hydrothermal activity, and magmatism at volcanoes can cause large and unexpected mass wasting events. Large fluidized debris flows have occurred within the past 6,000 years at Mount Adams, WA, and present a hazard to communities downstream. In August 2017, we began a pilot experiment to investigate the potential of infrasound arrays for detecting and tracking debris flows at Mount Adams. We deployed a telemetered 4-element infrasound array (BEAR, 85-m aperture) ~11 km from a...

Diet mediates thermal performance traits: implications for marine ectotherms

Emily Hardison, Emily A Hardison, Krista Kraskura, Jacey Van Wert, Tina Nguyen & Erika J Eliason
Thermal acclimation is a key process enabling ectotherms to cope with temperature change. To undergo a successful acclimation response, ectotherms require energy and nutritional building blocks obtained from their diet. However, diet is often overlooked as a factor that can alter acclimation responses. Using a temperate omnivorous fish, opaleye (Girella nigricans), as a model system, we tested the hypotheses that 1) diet can impact the magnitude of thermal acclimation responses and 2) traits vary in...

Predator-prey interactions of terrestrial invertebrates are determined by predator body size and species identity

Ana Miller-Ter Kuile, Austen Apigo, An Bui, Bartholomew DiFiore, Elizabeth Forbes, Michelle Lee, Devyn Orr, Daniel Preston, Rachel Behm, Taylor Bogar, Jasmine Childress, Rodolfo Dirzo, Maggie Klope, Kevin Lafferty, John McLaughlin, Marisa Morse, Carina Motta, Kevin Park, Katherine Plummer, David Weber, Ronald Young & Hillary Young
Predator-prey interactions shape ecosystem and can help maintain biodiversity. However, for many of the earth’s most biodiverse and abundant organisms, including terrestrial arthropods, these interactions are difficult or impossible to observe directly with traditional approaches. Based on previous theory, it is likely that predator-prey interactions for these organisms are shaped by a combination of predator traits, including body size and species-specific hunting strategies. In this study, we combined diet DNA metabarcoding data of 173 individual...

Data From: Tactile Echoes: Multisensory Augmented Reality for the Hand

Anzu Kawazoe, Gregory Reardon, Erin Woo, Massimiliano Di Luca & Yon Visell
Touch interactions are central to many human activities, but there are few technologies for computationally augmenting free-hand interactions with real environments. Here, we describe Tactile Echoes, a finger-wearable system for augmenting touch interactions with physical objects. This system captures and processes touch-elicited vibrations in real-time in order to enliven tactile experiences. We process these signals via a parametric signal processing network in order to generate responsive tactile and auditory feedback. Just as acoustic echoes are...

The CALFISH database: open-sourcing a century of California’s non-confidential fisheries landings and participation data

Christopher Free, Camila Vargas Poulsen & Lyall Bellquist
California’s commercial and recreational fisheries support vibrant coastal economies and communities. Maintaining healthy fishing communities into the future requires a detailed understanding of their past. The California Department of Fish and Wildlife (CDFW) has been monitoring statewide fisheries landings and participation since 1916 and releases confidential versions of this data through authorized data requests and non-confidential summaries of this data in its quasi-annual landings reports. The non-confidential data published in the landings reports provide a...

Relationships of climate, human activity, and fire history to spatiotemporal variation in annual fire probability across California: Source Code and Core Data

Isaac Park, Michael Mann, Lorraine Flint, Alan Flint & Max Moritz
In the face of recent wildfires across the Western United States, it is essential that we understand both the dynamics that drive the spatial distribution of wildfire, and the major obstacles to modeling the probability of wildfire over space and time. However, it is well documented that the precise relationships of local vegetation, climate, and ignitions, and how they influence fire dynamics, may vary over space and among local climate, vegetation, and land use regimes....

Data from: Strong evidence for an intraspecific metabolic scaling coefficient near 0.89 in fish

Krista Kraskura, Christopher Jerde & Erika Eliason
We curated standard metabolic rate measurements of individual fish, temperature, and body mass. The database is grouped by studies, with independent trials, and fish species. The databse includes a total of n = 1456 observations that were used to quantify the body mass – metabolic rate relationship in fishes using the evidential approach to statistical inference.

Microbarom high-frequency data products of the International Monitoring System’s infrasound stations

Patrick Hupe, Lars Ceranna, Alexis Le Pichon, Robin Matoza & Pierrick Mialle
This data series consists of data products derived from broadband signal detection lists that have been processed for the certified infrasound stations of the International Monitoring System. More specifically, this data series covers, among other phenomena, the upper frequency range of microbaroms (0.45-0.65 Hz) and is therefore called the ‘mb_hf’ product. The temporal resolution (time step and window length) is 15 min. For processing the infrasound data, the Progressive Multi-Channel Correlation (PMCC) array processing algorithm...

Higher frequency data products of the International Monitoring System’s infrasound stations

Patrick Hupe, Lars Ceranna, Alexis Le Pichon, Robin Matoza & Pierrick Mialle
This data series consists of data products derived from broadband signal detection lists that have been processed for the certified infrasound stations of the International Monitoring System. More specifically, within the CTBT-relevant infrasound range (around 0.01-4 Hz), this data series covers higher frequencies (1-3 Hz) and is therefore called the ‘hf’ product. The temporal resolution (time step and window length) is 5 min. For processing the infrasound data, the Progressive Multi-Channel Correlation (PMCC) array processing...

Historical and Forecast Land use Data for Ibadan, Nigeria 1984 - 2040

Damilola Eyelade, Keith Clarke & Ighodalo Ijagbone
The SLEUTH model was implemented for Ibadan Nigeria, a city in West Africa with a mostly unregulated growth trajectory. The input physiographic and historical data for SLEUTH was compiled at spatial resolutions ranging between 15m – 90m. The temporal resolution of inputs was based on 35 years of historical data spanning the years 1984 to 2020. The urban (built-up commercial, residential, and industrial) land use increased almost four-fold from 3.0% of the total area in...

Juan José Arreola y su estética del zigzag

Sara Poot Herrera
pp. 77-90 The work of Juan José Arreola, taken as a whole, represents a fluid and continuous coming and going between life and literature, reality and fiction. It is a back and forth trip, a zig zag between official and popular culture, literary genres, orality and writing, because Arreola is above all a thinker and a man of culture through multiple facets that accompanied him throughout his career: essayist, narrator, chronicler, biographer, philologist, teacher, actor,...

A distributed circuit for associating environmental context to motor choice in retrosplenial cortex

Luis Franco & Michael Goard
During navigation, animals often use recognition of familiar environmental contexts to guide motor action selection. The retrosplenial cortex (RSC) receives inputs from both visual cortex and subcortical regions required for spatial memory, and projects to motor planning regions. However, it is not known whether RSC is important for associating familiar environmental contexts with specific motor actions. Here, we test this possibility by developing a task in which trajectories are chosen based on the context. We...

Experience-dependent plasticity modulates ongoing activity in the antennal lobe and enhances odor representations

Luis Franco & Emre Yaksi
Ongoing neural activity has been observed across several brain regions and is thought to reflect the internal state of the brain. Yet, it is important to understand how ongoing neural activity interacts with sensory experience, and shapes sensory representations. Here, we show that projection neurons of the fruit fly antennal lobe exhibit spatiotemporally organized ongoing activity. After repeated exposure to odors, we observe a gradual and cumulative decrease in the amplitude and number of calcium...

Value of Curation Survey, January 2021

Lisa R Johnston, Renata Gonçalves Curty, Sophia Lafferty-Hess, Hannah Hadley, Jonathan Petters, Hoa Luong, Susan Braxton, Jake Carlson & Wendy A Kozlowski

Data from: Dermal denticle shedding rates vary between two captive shark species

Erin Dillon, Anshika Bagla, Kiera Plioplys, Douglas McCauley, Kevin Lafferty & Aaron O'Dea
Shark dermal scale (denticle) accumulation in the fossil record can provide information about the abundance and composition of past shark communities. Denticles are shed continuously, such that a single shark leaves a scattered composite of many isolated denticles in sediments. However, the rate of denticle shedding as well as how these rates vary among shark species with different life modes and their consistency over time are unknown, limiting the interpretation of denticle assemblages. To better...

Using acoustic telemetry to quantify potential contaminant exposure of Vermilion Rockfish (Sebastes miniatus), Hornyhead Turbot (Pleuronichthys verticalis), and White Croaker (Genyonemus lineatus) at wastewater outfalls in southern California

Echelle Burns, Barrett Wolfe, Jeff Armstrong, Danny Tang, Ken Sakamoto & Christopher Lowe
Contaminant Exposure Models (CEMs) were developed to predict population-level tissue contaminant concentrations in fishes by pairing sediment-bound contaminant concentrations (DDTs, PCBs) and fine-scale acoustic telemetry data from a habitat- associated species (Vermilion Rockfish, Sebastes miniatus), nomadic flatfish species (Hornyhead Turbot, Pleuronichthys verticalis), and nomadic benthic/midwater schooling species (White Croaker, Genyonemus lineatus) tagged near wastewater outfalls in southern California. Model results were compared to contaminant concentrations in tissue samples. The CEMs developed require further refinement before...

El Niño and marine heatwaves: Ecological impacts on Oregon rocky intertidal kelp communities at local to regional scales

Barbara Spiecker & Bruce Menge
El Niños and marine heatwaves are predicted to increase in frequency under greenhouse warming. The impact of climate oscillations like El Niño-Southern Oscillation on coastal environments in the short-term likely mimics those of climate change in the long-term; therefore, El Niños may serve as a short-term proxy for possible long-term ecological responses to an increasingly variable climate. Understanding and prediction of ecosystem responses requires elucidating the mechanisms underlying different organizational scales (organism, space, and time)....

Protecting the global ocean for biodiversity, food and climate

Enric Sala, Juan Mayorga, Darcy Bradley, Reniel Cabral, Trisha Atwood, Arnaud Auber, William Cheung, Francesco Ferretti, Alan Friedlander, Steven Gaines, Cristina Garilao, Whitney Goodell, Benjamin Halpern, Audra Hinson, Kristin Kaschner, Kathleen Kesner-Reyes, Fabien Leprieur, Jennifer McGowan, Lance Morgan, David Mouillot, Juliano Palacios-Abrantes, Hugh Possingham, Kristin Rechberger, Boris Worm & Jane Lubchenco
The ocean contains unique biodiversity, provides valuable food resources, and is a major sink for anthropogenic carbon. Marine protected areas (MPAs) are an effective tool for restoring ocean biodiversity and ecosystem services but at present only 2.7% of the ocean is highly protected. This low level of ocean protection is due largely to conflicts with fisheries and other extractive uses. To address this issue, here we developed a conservation planning framework to prioritize highly protected...

Triennial migration and philopatry in the critically endangered soupfin shark (Galeorhinus galeus)

Andrew Nosal, Daniel Cartamil, Arnold Ammann, Lyall Bellquist, Noah Ben-Aderet, Kayla Blincow, Echelle Burns, Eric Chapman, Ryan Freedman, Peter Klimley, Ryan Logan, Christopher Lowe, Brice Semmens, Connor White & Philip Hastings
Globally, one-quarter of shark and ray species is threatened with extinction due to overfishing. Effective conservation and management can facilitate population recoveries; however, these efforts depend on robust data on movement patterns and stock structure, which are lacking for many threatened species, including the Critically Endangered soupfin shark (Galeorhinus galeus), a circumglobal coastal-pelagic species. Using passive acoustic telemetry, we continuously tracked 34 mature female soupfin sharks, surgically implanted with coded acoustic transmitters, for seven years...

Spenders versus savers: climate-induced carbon allocation tradeoffs in a recently introduced woody plant

Randall Long, Tom Dudley, Carla D'Antonio, Kevin Grady, Susan Bush & Kevin Hultine
Non-structural carbohydrate(NSC) storage may be under strong selection in woody plant species that occur across strong environmental gradients. We therefore investigated carbon allocation strategies in a widely distributed, introduced woody plant. We predicted genotypes from cold climates with exposure to episodic freeze events, would have elevated NSC concentrations with the tradeoff of reduced growth and reproduction relative to warm-adapted genotypes. We established an experimental common garden using genotypes of Tamarix spp., sourced across a large...

Exposure, hazard and vulnerability all contribute to Schistosoma haematobium re-infection in northern Senegal

Andrea Lund, Susanne Sokolow, Isabel Jones, Chelsea Wood, Sofia Ali, Andrew Chamberlin, Alioune Sy, M. Moustapha Sam, Nicolas Jouanard, Anne-Marie Schacht, Simon Senghor, Assane Fall, Raphael Ndione, Gilles Riveau, Giulio De Leo & David Lopez-Carr
The risk of infectious diseases, including snail-borne schistosomiasis, is determined by three interrelated components: exposure, hazard and vulnerability. For schistosomiasis, exposure occurs through behaviors involving water contact, but not without the environmental hazard of snails and parasites in the water. Socio-economic vulnerability makes it difficult to reduce exposure in the presence of hazard, because it increases reliance on hazardous activities and environments. We aimed to quantify the contributions of exposure, hazard and vulnerability to schistosome...

Kinetic sequencing (k-Seq) as a massively parallel assay for ribozyme kinetics: utility and critical parameters

Yuning Shen, Abe Pressman, Evan Janzen & Irene Chen
Characterizing genotype-phenotype relationships of biomolecules (e.g., ribozymes) requires accurate ways to measure activity for a large set of molecules. Kinetic measurement using high-throughput sequencing (e.g., k-Seq) is an emerging assay applicable in various domains that potentially scales up measurement throughput to over 106 unique nucleic acid sequences. However, maximizing the return of such assays requires understanding the technical challenges introduced by sequence heterogeneity and DNA sequencing. We characterized the k-Seq method in terms of model...

Registration Year

  • 2021

Resource Types

  • Dataset
  • Text
  • Preprint


  • University of California, Santa Barbara
  • Stanford University
  • Atomic Energy and Alternative Energies Commission
  • United States Geological Survey
  • University of British Columbia
  • University of Washington
  • University of Queensland
  • University of Colorado Boulder
  • Federal Institute for Geosciences and Natural Resources
  • California State University, Long Beach