35 Works

Imaging the Upper Crust at Newberry Volcano using Large offset Reflections

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This experiment deployed a temporary seismic array of 81 L22 sensors across Newberry Volcano to record wide-agle refractions and reflections off of the geophysically-identified magma body underlying the volcano. Newberry is a large, recently active volcano that is most likely underlain by a shallow magma chamber; characterizing the size, depth, and percentage of melt in a magma rich volume is critical for assessing the hazard posed by a volcano.

Keithly Fire Fuel and Fuel Consumption

, Andrew T. Hudak, Joseph C. Restaino, Michael Billmire, Nancy H. F. French, Roger D. Ottmar, Bridget Hass, Kyle Zarzana, Tristan Goulden & Rainer Volkamer
Data Overview Mapped attributes: Fuel consumption derived from ALS data Post-fire fuel load derived from ALS data Pre-fire fuel load derived from ALS data Fuel consumption derived from FCCS data Post-fire fuel load derived from FCCS data Pre-fire fuel load derived from FCCS data Supplements: ALS data extent Keithly fire perimeter Keithly AOI fire perimeter Description Landscape scale estimates of pre-fire fuel load and fuel consumption are valuable resources for land managers and scientists. We...

Genetic data improves niche model discrimination and alters the direction and magnitude of climate change forecasts

Helen Bothwell, Luke Evans, Erika Hersch-Green, Scott Woolbright, Gerard Allan & Thomas Whitham
Ecological niche models (ENMs) have classically operated under the simplifying assumptions that there are no barriers to gene flow, species are genetically homogeneous (i.e., no population-specific local adaptation), and all individuals share the same niche. Yet, these assumptions are violated for most broadly distributed species. Here we incorporate genetic data from the widespread riparian tree species narrowleaf cottonwood (Populus angustifolia) to examine whether including intraspecific genetic variation can alter model performance and predictions of climate...

Supporting data to: Evolution of realized Eltonian niches across Rajidae species

Oliver Shipley, Joseph Kelly, Joseph Bizzarro, Jill Olin, Robert Cerrato, Michael Power & Michael Frisk
The notion that closely related species resemble each other in ecological niche space (i.e., phylogenetic dependence) has been a longstanding, contentious paradigm in evolutionary biology, the incidence of which is important for predicting the ecosystem-level effects of species loss. Despite being examined across a multitude of terrestrial taxa, many aspects of niche conservatism have yet to be explored in marine species, especially for characteristics related to resource use and trophic behavior (Eltonian niche characteristics, ENCs)....

Evolution of breeding plumages in birds: a multiple-step pathway to seasonal dichromatism in New World Warblers (Aves: Parulidae)

Ryan Terrill, Jared Wolfe & Glenn Seeholzer
Many species of birds show distinctive seasonal breeding and nonbreeding plumages. A number of hypotheses have been proposed for the evolution of this seasonal dichromatism, specifically related to the idea that birds may experience variable levels of sexual selection relative to natural selection throughout the year. However, these hypotheses have not addressed the selective forces that have shaped molt, the underlying mechanism of plumage change. Here, we examined relationships between life-history variation, the evolution of...

Data from: An Avida-ED digital evolution curriculum for undergraduate biology

James J. Smith, Wendy R. Johnson, Amy M. Lark, Louise S. Mead, Michael J. Wiser & Robert T. Pennock
We present an inquiry-based curriculum based on the digital evolution platform Avida-ED (http://​avida-ed.​msu.​edu). We designed an instructional sequence and lab book consisting of an introduction to Avida-ED and a set of three lessons focused on specific evolutionary concepts. These served to familiarize students with experimental evolution and Avida-ED. Students then developed independent Avida-ED research projects to test their own questions. Curriculum design and implementation occurred over the course or two semesters, with a pilot implementation...

Data from: Adaptive molecular evolution of a defence gene in sexual but not functionally asexual evening primroses

Erika I. Hersch-Green, Henrietta Myburg & Marc T. J. Johnson
Theory predicts that sexual reproduction provides evolutionary advantages over asexual reproduction by reducing mutational load and increasing adaptive potential. Here, we test the latter prediction in the context of plant defences against pathogens because pathogens frequently reduce plant fitness and drive the evolution of plant defences. Specifically, we ask whether sexual evening primrose plant lineages (Onagraceae) have faster rates of adaptive molecular evolution and altered gene expression of a class I chitinase, a gene implicated...

Data from: Two genomic regions together cause dark abdominal pigmentation in Drosophila tenebrosa

Kelly A. Dyer, Thomas Werner & Michael J. Bray
Pigmentation is a rapidly evolving trait that is under both natural and sexual selection in many organisms. In the quinaria group of Drosophila, nearly all of the 30 species have an abdomen that is light in color with distinct markings; D. tenebrosa is the exception in that it has a completely melanic abdomen with no visible markings. In this study, we use a combination of quantitative genetic and candidate gene approaches to investigate the genetic...

Data from: High genomic diversity and candidate genes under selection associated with range expansion in eastern coyote (Canis latrans) populations

Elizabeth Heppenheimer, Kristin E. Brzeski, Joseph W. Hinton, Brent R. Patterson, Linda Y. Rutledge, Alexandra L. DeCandia, Tyler Wheeldon, Steven R. Fain, Paul A. Hohenlohe, Roland Kays, Bradley N. White, Michael J. Chamberlain & Bridgett M. VonHoldt
Range expansion is a widespread biological process, with well described theoretical expectations for the genomic outcomes accompanying the colonization of novel ranges. However, comparatively few empirical studies address the genome-wide consequences associated with the range expansion process, particularly in recent or on-going expansions. Here, we assess two recent and distinct eastward expansion fronts of a highly mobile carnivore, the coyote (Canis latrans), to investigate patterns of genomic diversity and identify variants that may have been...

Data from: Negative frequency-dependent foraging behaviour in a generalist herbivore (Alces alces) and its stabilizing influence on food-web dynamics

Sarah R. Hoy, John A. Vucetich, Rongsong Liu, Don L. DeAngelis, Rolf O. Peterson, Leah M. Vucetich & John J. Henderson
1.Resource selection is widely appreciated to be context‐dependent and shaped by both biological and abiotic factors. However, few studies have empirically assessed the extent to which selective foraging behaviour is dynamic and varies in response to environmental conditions for free‐ranging animal populations. 2.Here, we assessed the extent that forage selection fluctuated in response to different environmental conditions for a free‐ranging herbivore, moose (Alces alces) in Isle Royale National Park, over a 10‐year period. More precisely,...

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