3 Works

Tradeoffs with utility-scale solar development and ungulates on western rangelands

Hall Sawyer
Utility scale solar energy (USSE) has become an efficient and cost-effective form of renewable energy, with an expanding footprint into rangelands that provide important habitat for many ungulate populations. Using GPS data collected before and after construction, we documented the potential impacts of USSE on pronghorn, including direct habitat loss, indirect habitat loss, and barrier effects to both resident and migratory population segments. Our case study highlights the challenges that USSE poses to ungulate conservation,...

Functional connectivity in a continuously distributed, migratory species as revealed by landscape genomics

Melanie E. F. LaCava, Roderick B. Gagne, Kyle D. Gustafson, Sara J. Oyler-McCance, Kevin L. Monteith, Hall Sawyer, Matthew J. Kauffman, Daniel J. Thiele & Holly B. Ernest
Maintaining functional connectivity is critical for the long-term conservation of wildlife populations. Landscape genomics provides an opportunity to assess long-term functional connectivity by relating environmental variables to spatial patterns of genomic variation resulting from generations of movement, dispersal, and mating behaviors. Identifying landscape features associated with gene flow at large geographic scales for highly mobile species is becoming increasingly possible due to more accessible genomic approaches, improved analytical methods, and enhanced computational power. We characterized...

Evidence of absence regression: a binomial N-mixture model for estimating fatalities at wind power facilities

Trent McDonald, Kimberly Bay, Jared Studyvin, Jesse Leckband, Amber Schorg & Jennifer McIvor
Estimating bird and bat fatalities caused by wind-turbine facilities is challenging when carcass counts are rare and produce counts that are either exactly zero or very near zero. The rarity of found carcasses is exacerbated when live members of a particular species are rare and when carcasses degrade quickly, are removed by scavengers, or are not detected by observers. With few observed carcass counts, common statistical methods like logistic, Poisson, or negative binomial regression are...

Registration Year

  • 2021

Resource Types

  • Dataset


  • Western EcoSystems Technology (United States)
  • Arkansas State University
  • University of Wyoming
  • United States Geological Survey
  • Colorado State University
  • Wyoming Game and Fish Department
  • United States Fish and Wildlife Service