Jef Jaeger

Associate Professor in Residence, School of Life Sciences
Expertise: Conservation biology, Phylogeography, Desert wildlife, Ecology, Population biology, Climate change


Life sciences professor Jef Jaeger specializes in conservation biology, ecology, population biology, and phylogeography. In addition to research, his passions include teaching biological sciences to undergraduate students who are pursuing degrees outside of sciences.

Since 1991, Jaeger has published over 25 publications highlighting desert wildlife — including bighorn sheep, amphibians, and more — and climate change indicators in the American West. Jaegar's publications have been recognized by publications including Frontiers of Ecology and Evolution and ScienceDaily.

Jaeger has received numerous fellowships and awards throughout his career at UNLV, including the College of Sciences' Outstanding Dissertation for 2006 and the U.S. Environmental Protection Agency's National Network For Environmental Management Studies (NEMS) Fellowship.


  • Ph.D., Biological Sciences, UNLV
  • M.S., Biological Sciences, UNLV
  • B.A., Environmental Studies, University of California, Santa Cruz

Search For Other Experts On

biology, environment, science & technology

Jef Jaeger In The News

Las Vegas Weekly
Have you ever pondered how Amazonian creatures conquer the relentless annual rainfall? Are you curious about the female bison’s spring escapade with her calves in the North American Prairie? Or perhaps you’ve always secretly wanted to measure yourself against a taxidermied polar bear, wondering who stands taller?
Broadway World
The new gallery contains a world of wildlife wonders showcasing the diverse ecosystems that blanket our planet and how daily life is intricately connected to biomes.
Wall Street Journal
According to data from short-term rental analytics firm AirDNA, Arizona’s Phoenix and Scottsdale area, the home of the 2023 Super Bowl, has seen a huge increase in booking demand, up 41% year-over-year, as of December 2022. This Sonoran Desert location has also seen an uptick in rental supply, with 23,249 listings in December 2022, up 47% year-over-year. These dynamics have pushed the area’s occupancy rate down 6%. A similar trend has been playing out in other desert destinations such as California’s Coachella Valley, where the Sonoran eventually meets the Mojave Desert, and in Marfa, Texas, in the Chihuahuan Desert.
In the American Southwest, native desert bighorn sheep populations found in landscapes with minimal human disturbance, including several national parks, are less likely to be vulnerable to climate change, according to a new study led by Oregon State University.

Articles Featuring Jef Jaeger

A man walks through weeds
Research | October 29, 2019

UNLV’s reintroduction effort keeps leopard frog species off the endangered list.

Research | May 8, 2012

A new species of scorpions nearly squirmed past a couple of UNLV graduate students. The story behind the Death Valley arthropod's discovery.