5 Works

Data from: Quantifying hummingbird preference for floral trait combinations: the role of selection on trait interactions in the evolution of pollination syndromes

Charles B. Fenster, Richard J. Reynolds, Christopher W. Williams, Robert Makowsky & Michele R. Dudash
Darwin recognized the flower's importance for the study of adaptation and emphasized that the flower's functionality reflects the coordinated action of multiple traits. Here we use a multi-trait manipulative approach to quantify the potential role of selection acting on floral trait combinations underlying the divergence and maintenance of three related North American species of Silene (Caryophyllaceae). We artificially generated 48 plant phenotypes corresponding to all combinations of key attractive traits differing among the three Silene...

Data from: Range-wide distribution of genetic diversity in the North American tree Juglans cinerea: a product of range shifts, not ecological marginality or recent population decline

Sean M Hoban, Daniel S Borkowski, Sunshine L Brosi, Tim S McCleary, Laura M Thompson, Jason S McLachlan, Marie A Pereira, Scott E Schlarbaum & Jeanne Romero-Severson
The spatial distribution of genetic diversity is a product of recent and historical ecological processes, as well as anthropogenic activities. A current challenge in population and conservation genetics is to disentangle the relative effects of these processes, as a first step in predicting population response to future environmental change. In this investigation we compare the influence of contemporary population decline, contemporary ecological marginality, and postglacial range shifts. Using classical model comparison procedures and Bayesian methods,...

Data from: Geographic origins and population genetics of bats killed at wind-energy facilities

Cortney L. Pylant, David M. Nelson, Matthew C. Fitzpatrick, J. Edward Gates & Stephen R. Keller
An unanticipated impact of wind-energy development has been large-scale mortality of insectivorous bats. In eastern North America, where mortality rates are among the highest in the world, the hoary bat (Lasiurus cinereus) and the eastern red bat (L. borealis) comprise the majority of turbine-associated bat mortality. Both species are migratory tree bats with widespread distributions; however, little is known regarding the geographic origins of bats killed at wind-energy facilities or the diversity and population structure...

Data from: Impact of population expansion on genetic diversity and structure of river otters (Lontra canadensis) in central North America

Jessica R. Brandt, Adam L. Brandt, Frank K. Ammer, Alfred L. Roca & Thomas L. Serfass
Populations of North American river otters (Lontra canadensis) declined throughout large portions of the continent during the early 1900s due to habitat degradation and unregulated trapping. River otters had been extirpated in North Dakota (ND), but the Red River Valley has since been recolonized, with potential source populations including the neighboring states of Minnesota or South Dakota, or the Canadian province of Manitoba (MB). We genotyped 9 microsatellite loci in 121 samples to determine the...

Metabolic theory of ecology successfully predicts distinct scaling of ectoparasite load on hosts

Ryan Hechinger, Kate Sheehan & Andrew Turner
The impacts of parasites on hosts and the role that parasites play in ecosystems must be underlain by the load of parasites in individual hosts. To help explain and predict parasite load across broad swaths of species, quantitative theory has been developed based on fundamental relationships between organism size, temperature, and metabolic rate. Here, we elaborate on an aspect of that “scaling theory for parasitism”, and test a previously unexplored prediction, using new data for...

Registration Year

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  • Frostburg State University
  • University of Maryland, College Park
  • University of Alabama at Birmingham
  • University of Notre Dame
  • University of Vermont
  • University of California, San Diego
  • National Institutes of Health
  • University of Tennessee at Knoxville