15 Works

Data from: Hypoxia tolerance is unrelated to swimming metabolism of wild, juvenile striped bass (Morone saxatilis)

Krista Kraskura & Jay Nelson
Juvenile striped bass reside in the Chesapeake Bay where they are likely to encounter hypoxia that could affect their metabolism and performance. The ecological success of this economically valuable species may depend on their ability to tolerate hypoxia and perform fitness-dependent activities in hypoxic waters. We tested whether there is a link between hypoxia tolerance (HT) and oxygen consumption rate (MO2) of juvenile striped bass measured while swimming in normoxic and hypoxic water, and to...

Mixed-species herding levels the landscape of fear

Keenan Stears, Melissa Schmitt, Christopher Wilmers & Adrian Shrader
Prey antipredator behaviours are influenced by perceived predation risk in a landscape and social information gleaned from herd mates regarding predation risk. It is well documented that high-quality social information about risk can come from heterospecific herd mates. Here, we integrate social information with the landscape of fear to quantify how these landscapes are modified by mixed-species herding. To do this, we investigated zebra vigilance in single- and mixed-species herds across different levels of predation...

Data for Variations in the Intensity and Spatial Extent of Tropical Cyclone Precipitation

Danielle Touma, Samantha Stevenson, Suzana Camargo, Daniel Horton & Noah Diffenbaugh
The intensity and spatial extent of tropical cyclone precipitation (TCP) often shapes the risk posed by landfalling storms. Here we provide a comprehensive climatology of landfalling TCP characteristics as a function of tropical cyclone strength, using daily precipitation station data and Atlantic US landfalling tropical cyclone tracks from 1900-2017. We analyze the intensity and spatial extent of ≥ 1 mm/day TCP (Z1) and ≥ 50 mm/day TCP (Z50). We show that the highest median intensity...

Sex-specific floral attraction traits in a sequentially hermaphroditic species

Kristen Peach, Susan Mazer, Jasen Liu & Kristen Klitgaard
The examination of sexual dimorphism in plants has primarily been restricted to dioecious taxa. However, most angiosperms produce cosexual flowers in which male and female function are separated temporally, which may also generate sexual dimorphism (between the male and female stages of floral lifespan). The temporal separation between male and female function in such flowers may be associated with variation in traits that influence pollinator attraction and may function to minimize self-fertilization or to maximize...

Depth dependent azimuthal anisotropy beneath the Juan de Fuca plate system

Zachary Eilon & Donald Forsyth
We use surface wave measurements to reveal anisotropy as a function of depth within the Juan de Fuca and Gorda plate system. Using a two-plane wave method, we measure phase velocity and azimuthal anisotropy of fundamental mode Rayleigh waves, solving for anisotropic shear velocity. These surface wave measurements are jointly inverted with constraints from shear wave splitting studies using a Markov chain approach.

Land use change in California, 2001-2100

Keith Clarke & Michael Johnson
The SLEUTH urbanization and land use change model was used to produce century-long forecasts of California’s land uses to the year 2100. We describe how data were assembled and conflated for the model, how the model was applied to the very large and high resolution dataset, and how calibration of the model was performed using a genetic algorithm. The calibration results showed that the model accuracy was high, and suitable for simulations, which used Monte...

Data from: Dermal denticle assemblages in coral reef sediments correlate with conventional shark surveys

Erin Dillon, Kevin Lafferty, Douglas McCauley, Darcy Bradley, Richard Norris, Jennifer Caselle, Graziella DiRenzo, Jonathan Gardner & Aaron O'Dea
It is challenging to assess long-term trends in mobile, long-lived, and relatively rare species such as sharks. Despite ongoing declines in many coastal shark populations, conventional surveys might be too fleeting and too recent to describe population trends over decades to millennia. Placing recent shark declines into historical context should improve management efforts as well as our understanding of past ecosystem dynamics. A new paleoecological approach for surveying shark abundance on coral reefs is to...

Fungal infection alters the selection, dispersal, and drift processes structuring the amphibian skin microbiome

Mark Q Wilber, Andrea J Jani, Joseph R Mihaljevic & Cheryl J Briggs
Symbiotic microbial communities are important for host health, but the processes shaping these communities are poorly understood. Understanding how community assembly processes jointly affect microbial community composition is limited because inflexible community models rely on rejecting dispersal and drift before considering selection. We developed a flexible community assembly model based on neutral theory to ask: How do dispersal, drift, and selection concurrently affect the microbiome across environmental gradients? We applied this approach to examine how...

Data from: Mating system and historical climate conditions affect population mean seed mass: evidence for adaptation and a new component of the selfing syndrome in Clarkia

Susan Mazer, Isaac Park, Matthew Kimura, Aaron Yim, Emma Maul & Kristen Peach
1. The evolution of seed size may be influenced by intrinsic attributes of populations, such as mating system, and extrinsic factors, such as climate. Several hypotheses propose that the evolution of self-fertilization from an outcrossing progenitor will be accompanied by a reduction in seed size, but this prediction has not been rigorously tested. Many studies report that the mean seed size of populations or taxa is associated with long-term climate conditions. Here, we examined the...

Variations in the Intensity and Spatial Extent of Tropical Cyclone Precipitation

Danielle Touma, Samantha Stevenson, Suzana J. Camargo, Daniel E. Horton & Noah S. Diffenbaugh
The intensity and spatial extent of tropical cyclone precipitation (TCP) often shapes the risk posed by landfalling storms. Here we provide a comprehensive climatology of landfalling TCP characteristics as a function of tropical cyclone strength, using daily precipitation station data and Atlantic US landfalling tropical cyclone tracks from 1900-2017. We analyze the intensity and spatial extent of ≥ 1 mm/day TCP (Z1) and ≥ 50 mm/day TCP (Z50) over land. We show that the highest...

Data from: Looking back to look ahead: a vision for soil denitrification research

Maya Almaraz, Michelle Wong & Wendy Yang
Denitrification plays a critical role in regulating ecosystem nutrient availability and anthropogenic reactive nitrogen (N) production. Its importance has inspired an increasing number of studies, yet it remains the most poorly constrained term in terrestrial ecosystem N budgets. We censused the peer-reviewed soil denitrification literature (1975 to 2015) to identify opportunities for future studies to advance our understanding despite the inherent challenges in studying the process. We found that only one-third of studies reported estimates...

Aerial Measurements from Outdoor 2.4GHz 802.15.4 Network

Mikhail Nekrasov, Ryan Allen & Elizabeth Belding
Unmanned Aircraft Systems (UAS), i.e. drones, have been commercially successful in both the consumer and industrial sectors in part due to the wide variety of applications they benefit. In environmental monitoring and precision agriculture, UASs can be utilized for data collection from rural IoT sensor networks. These networks frequently operate over some variant of the IEEE 802.15.4 standard, taking advantage of the standard's low power usage. Consumer 802.15.4 radios are widely available in compact form...

Detecting an effect of group size on individual responses to neighboring groups in grey-cheeked mangabeys (Lophocebus albigena)

Michelle Brown
Evolutionary game theory posits that competitive ability affects the initiation, escalation, and resolution of conflicts. When these contests occur among groups, rather than individuals, competitive ability is generally measured as the size of the group. Oddly, there exist a number of examples in which individual participation during intergroup conflicts appears unaffected by competitive ability. To determine whether the absence of a group size effect might be due to an unduly strict definition of participation, I...

Halite precipitation from double-diffusive salt fingers in the Dead Sea: Numerical simulations

Raphael Ouillon, Eckart Meiburg, Nadav Lensky, Vladimir Lyakhovsky & Ali Arnon
We employ direct numerical simulations in order to analyze the role of double-diffusive salt fingering in halite precipitation from hypersaline lakes. Guided by field observations from the Dead Sea, which represents the only modern deep stratified lake that precipitates halite under hydrological crisis, we consider a saturated layer of warm, salty brine (epilimnion) overlying a layer of colder, less salty brine (hypolimnion) that is also saturated. The double-diffusive instability originating in the metalimnion gives rise...

Floral traits influence the opportunity for selection among male gametophytes: independent and combined effects of style length and petal area

Susan Mazer, Joseph Chellew & Kristen Peach
The data set included here was used for the analyses published in a paper titled, " American Journal of Botany, for which the abstract is as follows: PREMISE: Strong correlations between traits can obscure their independent effects on components of reproduction. Style length (SL) and petal area (PA) vary within species, for example, but their independent effects on the opportunity for selection among pollen genotypes are poorly understood. Previous work in Clarkia detected a positive...

Registration Year

  • 2019
    10
  • 2020
    5

Resource Types

  • Dataset
    15

Affiliations

  • University of California, Santa Barbara
    15
  • Stanford University
    2
  • Victoria University of Wellington
    1
  • University of Pretoria
    1
  • Columbia University
    1
  • Northwestern University
    1
  • University of Hawaii at Manoa
    1
  • Northern Arizona University
    1
  • Lamont-Doherty Earth Observatory
    1
  • Département de la Formation, de la Jeunesse et de la Culture
    1
  • Smithsonian Tropical Research Institute
    1
  • University of California, Santa Cruz
    1
  • Towson University
    1
  • University of Illinois at Urbana Champaign
    1
  • Pennsylvania State University
    1