11 Works

Invasion and Global Change Meta-analysis Data

Bianca E. Lopez, Jenica M. Allen, Jeffrey S. Dukes, Jonathan Lenoir, Montserat Vila, Dana M. Blumenthal, Evelyn M. Beaury, Emily J. Fusco, Toni Lyn Morelli, Cascade J. B. Sorte & Bethany A. Bradley
We conducted a global meta-analysis to investigate invasions, abiotic global environmental changes, and their combined effects on native species, communities, and ecosystems.We searched the Web of Science Core Collection for articles and reviews that were available in English through September 30, 2020. Search terms were chosen to identify papers reporting impacts of invasions with one of six abiotic global environmental changes (GECs: warming, nitrogen deposition, O2 depletion, drought, CO2 addition, and altered pH). We assessed...

Data from: Evidence toads may modulate landing preparation without predicting impact time

Suzanne M. Cox & Gary B. Gillis
Within anurans (frogs and toads), cane toads (Bufo marinus) perform particularly controlled landings in which the forelimbs are exclusively used to decelerate and stabilize the body after impact. Here we explore how toads achieve dynamic stability across a wide range of landing conditions. Specifically, we suggest that torques during landing could be reduced by aligning forelimbs with the body's instantaneous velocity vector at impact (impact angle). To test whether toad forelimb orientation varies with landing...

Plant regulatory lists in the U.S. are reactive and inconsistent - Appendix 1

Evelyn M. Beaury, Emily J. Fusco, Jenica M. Allen & Bethany A. Bradley

Data from: Vision fine-tunes preparation for landing in the cane toad, Rhinella marina

Laura J. Ekstrom, Christopher Panzini, Gary B. Gillis & Chris Panzini
In toad hopping, the hindlimbs generate the propulsive force for takeoff while the forelimbs resist the impact forces associated with landing. Preparing to perform a safe landing, in which impact forces are managed appropriately, likely involves the integration of multiple types of sensory feedback. In toads, vestibular and/or proprioceptive feedback are critical for coordinated landing, however, the role of vision remains unclear. To clarify this role, this study compares pre-landing forelimb muscle activation patterns in...

Data from: Mortality and morphology in egg masses of unisexual and Jefferson Salamanders

Noah Charney, Jacob Kubel, Craig Woodard, Blanca Carbajal-González, Samantha Avis, Julia Blyth, Charles Eiseman, John Castorino & John Malone
Unisexual Ambystoma salamander egg masses have often been observed to exhibit very high rates of embryo mortality. The ecological consequences and underlying mechanisms are of great concern to researchers and managers studying these and other members of the species complex, all of which are listed as rare species throughout much of their range. Substantial embryo mortality is commonly used by field ecologists as an indicator that unisexual salamanders are present in a pond; egg masses...

The integration of sensory feedback in the modulation of anuran landing preparation

Suzanne Cox & Gary Gillis
Controlled landing requires preparation. Mammals and bipedal birds vary how they prepare for landing by predicting the timing and magnitude of impact from the integration of visual and non-visual information. Here we explore how an animal that moves primarily through hopping, Rhinella marina, the cane toad, integrates sensory information to modulate landing preparation. Earlier work suggests toads may modulate landing preparation using predictions of impact timing and/or magnitude based on non-visual sensory feedback during takeoff...

Data from: A characterization of autumn nocturnal migration detected by weather surveillance radars in the northeastern US

Andrew Farnsworth, Benjamin Mark Van Doren, Wesley M. Hochachka, Daniel Sheldon, Kevin Winner, Jed Irvine, Jeffrey Geevarghese & Steve Kelling
Billions of birds migrate at night over North America each year. However, few studies have described the phenology of these movements, such as magnitudes, directions, and speeds, for more than one migration season and at regional scales. In this study, we characterize density, direction, and speed of nocturnally migrating birds using data from 13 weather surveillance radars in the autumns of 2010 and 2011 in the northeastern US. After screening radar data to remove precipitation,...

Sensory feedback and coordinating asymmetrical landing in toads

Suzanne Cox, Gary B. Gills, Gary B. Gillis & S. M. Cox
Coordinated landing requires anticipating the timing and magnitude of impact, which in turn requires sensory input. To better understand how cane toads, well known for coordinated landing, prioritize visual versus vestibular feedback during hopping, we recorded forelimb joint angle patterns and electromyographic data from five animals hopping under two conditions that were designed to force animals to land with one forelimb well before the other. In one condition, landing asymmetry was due to mid-air rolling,...

Data from: Female behavior and the interaction of male and female genital traits mediate sperm transfer during mating.

Christopher R. Friesen, Emily J. Uhrig, Robert T. Mason & Patricia L.R. Brennan
Natural selection and post-copulatory sexual selection, including sexual conflict, contribute to genital diversification. Fundamental first steps in understanding how these processes shape the evolution of specific genital traits are to determine their function experimentally and to understand the interactions between female and male genitalia during copulation. Our experimental manipulations of male and female genitalia in red-sided garter snakes (Thamnophis sirtalis parietalis) reveal that copulation duration and copulatory plug deposition, as well as total and oviductal/vaginal...

Field-based body temperatures reveal behavioral thermoregulation strategies of the Atlantic marsh fiddler crab Minuca pugnax

Renae Brodie
Behavioral thermoregulation is an important defense against the negative impacts of climate change for ectotherms. In this study we examined the use of burrows by a common intertidal crab, Minuca pugnax, to control body temperature. To understand how body temperatures respond to changes in the surface temperature and explore how efficiently crabs exploit the cooling potential of burrows to thermoregulate, we measured body, surface, and burrow temperature data during low tide on Sapelo Island, GA...

Data from: A synthesis of the effects of cheatgrass invasion on U.S. Great Basin carbon storage

R Chelsea Nagy, Emily Fusco, Jennifer Balch, John Finn, Adam Mahood, Jenica Allen & Bethany Bradley
Non-native, invasive Bromus tectorum (cheatgrass) is pervasive in sagebrush ecosystems in the Great Basin ecoregion of the western U.S., competing with native plants and promoting more frequent fires. As a result, cheatgrass invasion likely alters carbon (C) storage in the region. Many studies have measured C pools in one or more common vegetation types: native sagebrush, invaded sagebrush, and cheatgrass-dominated (often burned) sites, but these results have yet to be synthesized. We performed a literature...

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Affiliations

  • Mount Holyoke College
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  • University of Massachusetts Amherst
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  • Oregon State University
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  • Estación Biológica de Doñana
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  • University of Picardie Jules Verne
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