skip to main contentskip to footer

Quick links

  • Athletics
  • Make a gift
  • Current students
  • Job openings
  • Employee directory
  • Apply
  • Costs
  • Explore
Explore U of I
  • Visit and virtual tour
  • Student life
  • Find your degree
  • Get around campus
  • Meet Moscow
  • Join our email list
  • Events
  • Join ZeeMee
  • Athletics
Academics
  • Academic calendar
  • Find a major
  • Student support resources
  • Undergrad research opportunities
  • Meet the colleges
  • Online learning
  • Explore in-demand careers
Admissions
  • Meet your counselor
  • Deadlines
  • First-year students
  • Graduate students
  • Law students
  • Online students
  • Transfer students
  • International students
  • Admitted students
Financial aid
  • Cost of attendance
  • Steps for financial aid
  • FAFSA information
  • Financial aid FAQs
  • In-state scholarships
  • Out-of-state and international scholarships
  • Connect with financial aid
More
  • Student life
  • Research
  • Recreational offerings
  • Student resources
  • Alumni
  • Parents
  • Newsroom
  • Events
  • Sustainability initiatives
Find your passion - Explore majors Become a Vandal - Start an application
  • Current students
  • Make a gift
  • Athletics
  • Directory
Events
Attend U of I’s cornerstone lecture series
Hear presentations spanning the arts, sciences, humanities and social sciences at the weekly Malcom Renfrew Interdisciplinary Colloquium.
Head to Moscow for Homecoming
Celebrate Vandal pride and tradition — join University of Idaho Homecoming Oct. 5-11 and be part of the weeklong experience.
Plan for the Fall Career Fair
Explore jobs, internships and graduate school options at the Fall Career Fair Wednesday, Oct. 8, at the P1FCU Kibbie Dome.
Events
News
Professor Dev Shrestha, Associate Professor Russ Qualls and students do Palouse Soil Moisture Project research, as part of a 3-year study, at University of Idaho’s field research farm, Kambitsch Farm, near Genesee, ID Thursday, April 10, 2025.
Researcher aims to boost yields with biochar
A white planet surrounded by white rings and white moons
Prof helps discover moon orbiting Uranus
News
Support a Vandal - Make a gift
  • Apply
  • Costs
  • Explore
  • Explore
  • Academics
  • Admissions
  • Financial Aid
  • Student life
  • Research
  • Recreational offerings
  • Student resources
  • Alumni
  • Parents
  • Newsroom
  • Events
  • Sustainability initiatives
  1. Home/
  2. U of I Newsroom/
  3. Microbes go up in smoke

Leda Kobziar ignites a new field of fire science

University of Idaho professor pioneers pyroaerobiology, revealing how wildfire smoke transports living microbes across ecosystems

College of Natrual Resource University of Idaho Experimental Forest prescribed burn

BY Ralph Bartholdt

Photos by Melissa Hartley, and video by Melissa Hartley and Garrett Britton

September 1, 2022

Leda Kobziar didn’t expect her ecological studies to launch into the troposphere. The University of Idaho fires science professor hadn’t considered that publishing a paper on the spread of microbes in wildfire smoke would be a game changer in fire science circles.

Over the past couple of years however, Kobziar’s name has become synonymous with a new field of ecological research called pyroaerobiology. It is a name she coined to describe the study of living microorganisms found in plumes of forest fire smoke. Her work has appeared in national and international media and been published in several journals.

“The interest the smoke research has garnered has been crazy,” Kobziar said.

In collaboration with scientists at the University of Florida and Colorado School of Mines, Kobziar’s U of I team, which includes undergraduate, graduate and postdoctoral students, explores the ecological and pathological repercussions of airborne bacteria and fungi hurled into the atmosphere during wildfires. Her group found more than a thousand different organisms surfing the smoke waves.

The next step, said Kobziar, is to determine how long microorganisms can live in the smoke, how far they can travel, and what effects they can have on natural systems.

“Are there repercussions for aquatic ecosystems from smoke transported over water bodies?” Kobziar asked. “Does smoke transport pathogenic organisms that can affect humans and crops, or is it transporting beneficial organisms critical for soil functioning?”

There seem to be an infinite number of questions that remain to be answered.

Leda Kobziar

professor of wildlife fire science

Early research

The idea that smoke could be a source of living microbes was first investigated almost 20 years ago, when a Texas father-daughter team, Forrest and Sarah Mims, published a paper in Atmospheric Environment that showed viable fungal spores were present in smoke from distant wildfires.

The Mimses sampled air using a kite flown over the Gulf Coast. They found bacteria and fungi in smoke from forest fires in Yucatán, Mexico.

The Mims’ findings were not well publicized, and most scientists assumed smoke was too hot, gaseous and toxic to sustain living organisms — until Kobziar and her team showed, once again, microbes can be transported in the baking, volatile smoke of burning forests and grasslands.

Because pyroaerobiology is so new, Kobziar’s team is constantly developing novel ways to collect microbes from smoke. Phinehas Lampman, a doctoral student, drone pilot and former firefighter who grew up in Headquarters, Idaho, modifies drones using aluminum bar stock to attach small pumps and tubes. The mechanisms suck wildfire smoke through filters where the airborne fungi and bacteria can be collected.

“There aren’t any established ways to do any of this,” Lampman said. “We’re always coming up with new or better methods to conduct experiments, and that’s what makes it so interesting.”

So far, Kobziar and colleagues discovered that over 80% of the microbes in smoke samples collected from burning forests in Florida were alive. Additional samples collected with drones from extremely intense fires in the Rocky Mountain West found 60% of microbes had survived the intense heat of the smokey highway.

She estimates that 40 trillion to more than 100 trillion microbes are released into the atmosphere for every 2.5 acres burned in low- to mid-intensity fires.

“This means that larger fires would be predicted to mobilize even larger numbers of microbes,” Kobziar said.

Researchers found that microbes globbed onto airborne particles of burned plant or soil material. They learned microbes in the atmosphere enhanced condensation and freezing of water. By acting as ice-nucleating particles, the clumps of microbes can influence precipitation and change weather.

Fire Ecology Lab leadership and team conduct smoke, fire, and microbe research in the Idaho Fire Initiative for Research and Education (IFIRE) Combustion Laboratory at Pitkin Nursery.
Leda Kobziar.

New frontiers in smoke science

Hannah Griffin, who attends North Idaho College with plans to pursue a medical career, said joining Kobziar’s crew via an INBRE (IDeA Network of Biomedical Research) scholarship has given her an out-of-the-box view of microbiology.

Griffin is exploring whether microbes found in smoke have higher heat and drying tolerance than microbes found in non-smoky air.

“The hypothesis is that microbes found in smoke are more tolerant of high temperatures and drying,” Griffin said. “How smoke and heat can affect adaptations in microbes is something I had not considered before working with this team.”

Earth scorched by recent fires may seem like a wasteland because the microbes critical to plant health and nitrogen processing are severely reduced. But the new science shows that smoke can relocate bacteria and fungi to barren areas, essentially “reseeding” those places with new microbes.

The process of smoke-borne microbes adapting and being relocated has likely been happening for hundreds of millions of years, Kobziar said.

“Fire has been influencing the world in this way, as a microbial volcano,” she said. “This changes how we think about fire’s role on earth, and its effect on atmospheric processes.”

She and her fellow researchers theorize that smoke may be a temporary refuge for microbiota.

“These are the things that our upcoming work is going to try to unravel and test,” she said. “There seem to be an infinite number of questions that remain to be answered.”

Fire smoke research

Aerial video of a prescribed burn in an open forest of tall pine and larch trees and little underbrush.

This project was funded to University of Idaho by the National Science Foundation under award 2039525. The total project funding is $443,170.00 of which 100% is the federal share. In addition, this project was funded to University of Idaho by the USDA-Forest Service under award 20-JV-11261987-115. The total project funding is $21,732.89 of which 69% is the federal share. This project was also funded to University of Idaho by the US Environmental Protection Agency under award PO #68HE0B21P0002. The total project funding is $50,000.00 of which 100% is the federal share.

Related Topics

BiologyForests and ForestryWildfire

Footer

Ready to apply?

Start your application
Joe Vandal head illustration

Footer Navigation

Resources

  • Policies
  • Privacy statement
  • Web accessibility
  • Title IX

Campus

  • Directory
  • Map
  • Safety
  • Events

Information For

  • Prospective students
  • Current students
  • Parents
  • Employees
Logo

University of Idaho

875 Perimeter Drive, Moscow, ID 83844

208-885-6111

info@uidaho.edu

Engage with U of I on Facebook. Get the latest U of I updates on X. Catch up with U of I on Instagram. Grow your professional network by connecting with U of I on LinkedIn. Interact with University of Idaho's video content on YouTube. Join the University of Idaho ZeeMee conversation.
Support a Vandal - Make a gift
  • Athletics
  • Jobs
  • News

© 2025 University of Idaho