4 Works

Data from: Elk migration influences the risk of disease spillover in the Greater Yellowstone Ecosystem

Nathaniel Rayl, Jerod Merkle, Kelly Proffitt, Emily Almberg, Jennifer Jones, Justin Gude & Paul Cross
Wildlife migrations provide important ecosystem services, but they are declining. Within the Greater Yellowstone Ecosystem (GYE) some elk (Cervus canadensis) herds are losing migratory tendencies, which may increase spatiotemporal overlap between elk and livestock (domestic bison [Bison bison] and cattle [Bos taurus]), potentially exacerbating pathogen transmission risk. We combined disease, movement, demographic, and environmental data from eight elk herds in the GYE to examine the differential risk of brucellosis transmission (through aborted fetuses) from migrant...

Individual and population fitness consequences associated with large carnivore use of residential development

Heather Johnson, David L. Lewis, Stewart Breck, Heather E. Johnson & Stewart W. Breck
Large carnivores are negotiating increasingly developed landscapes, but little is known about how such behavioral plasticity influences their demographic rates and population trends. Some investigators have suggested that the ability of carnivores to behaviorally adapt to human development will enable their persistence, and yet, others have suggested that such landscapes are likely to serve as population sinks or ecological traps. To understand how plasticity in black bear (Ursus americanus) use of residential development influences their...

Estimating densities of larval Salmonflies (Pteronarcys californica) through multiple pass removal of post-emergent exuvia in Colorado rivers

Dan Kowalski
Traditional methods of collecting, sorting, and identifying benthic macroinvertebrate samples are useful for stream biomonitoring and ecological studies, however, these methods are time consuming, expensive, and require taxonomic expertise. Estimating larval densities through collection of post-emergent exuvia can be a practical and time efficient alternative. We evaluated the use of multiple pass depletion techniques of the post-emergent exuvia of Pteronarcys californica to estimate larval densities at ten sites in three Colorado rivers. Exuvia density was...

Data from: Life-history theory provides a framework for detecting resource limitation: a test of the Nutritional Buffer Hypothesis

Brett Jesmer, Matthew Kauffman, Alyson Courtemanch, Steve Kilpatrick, Timothy Thomas, Jeff Yost, Kevin Monteith & Jacob Goheen
For ungulates and other long-lived species, life-history theory predicts that nutritional reserves are allocated to reproduction in a state-dependent manner because survival is highly conserved. Further, as per-capita food abundance and nutritional reserves decline (i.e., density-dependence intensifies), reproduction and recruitment become increasingly sensitive to weather. Thus, the degree to which weather influences vital rates should be associated with proximity to nutritional carrying capacity—a notion that we refer to as the Nutritional Buffer Hypothesis. We tested...

Registration Year

  • 2020

Resource Types

  • Dataset


  • Colorado Parks and Wildlife
  • United States Geological Survey
  • University of Wyoming
  • United States Department of Agriculture
  • National Wildlife Health Center
  • Montana Fish, Wildlife & Parks
  • Yale University
  • Wyoming Game and Fish Department
  • Wild Sheep Foundation