Ariel Cowan

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Regional Fire Specialist, Central Region

Tenga en cuenta que es posible que esta persona no hable español.

[email protected]

Expertise: Fire , Forest health and management , Nontimber forest products , Plant diseases

Programs: Fire Program

Locations: Confederated Tribes of Warm Springs , Crook County , Deschutes County , Jefferson County , Lake County , Klamath County

Links: Linkedin

Department/Unit: Forestry and Natural Resources Extension

Content by Ariel Cowan

Postfire follow-up: Using the LEAF assessment template

The days following a wildfire are a critical time for recovery outreach. Learn how to help landowners set priorities, outline goals and connect with needed resources.

Kara Baylog, Glenn Ahrens, Stephen Fitzgerald, Lauren Grand, Alicia Christiansen, Kidane Giday, Aaron Groth, Ariel Cowan | Sep 2025 | OSU Extension Catalog

Not all flame's the same: East Cascades

In the East Cascades, fire once maintained healthy, open ponderosa pine forests and supported forest resilience through low-severity burns. Today, fire suppression, denser vegetation, climate change and human development ...

Ariel Cowan | May 2025 | OSU Extension Catalog

Prescribed fire basics: Liability in Oregon

In rare cases, prescribed fire may lead to damages. Landowners can take precautions to reduce the chances of fire escaping and causing harm.

Jordon N. Lindsey, Ariel Cowan, Kasey Johnson, Dan Leavell, Amy Markus, Jason Pettigrew, Jillian Pihulak, John Punches, John Rizza, Jenessa Stemke, Carrie Berger | Sep 2024 | OSU Extension Catalog

Wildfire and water inspire new art exhibit influenced by Extension science

PLAYA residency brings artists and OSU fire specialists together for collaborative storytelling.

Francesca Lear | Apr 18, 2024 | News story

Wildfire campaign boosts preparedness in Central Oregon

This collaborative campaign is helping more Oregonians understand their role in creating safer, more resilient landscapes.

Ariel Cowan | Mar 2024 | Impact story

Fire-resistant plant profiles: Trees

Choose the right trees for your fire-resistant landscape with this comprehensive list for the Pacific Northwest.

Amy Jo Detweiler, Stephen Fitzgerald, Ariel Cowan, Neil Bell, Thomas Stokely | Nov 2023 | Educational gallery

Fire-resistant plant profiles: Shrubs

Choose the right shrubs for your fire-resistant landscape with this comprehensive list for the Pacific Northwest.

Amy Jo Detweiler, Stephen Fitzgerald, Ariel Cowan, Neil Bell, Thomas Stokely | Nov 2023 | Educational gallery

Fire-resistant plant profiles: Broadleaf evergreens

Choose the right broadleaf evergreen plants for your fire-resistant landscape with this comprehensive list for the Pacific Northwest.

Amy Jo Detweiler, Stephen Fitzgerald, Ariel Cowan, Neil Bell, Thomas Stokely | Nov 2023 | Educational gallery

Fire-resistant plant profiles: Groundcovers

Choose the right groundcover plants for your fire-resistant landscape with this comprehensive list for the Pacific Northwest.

Amy Jo Detweiler, Stephen Fitzgerald, Ariel Cowan, Neil Bell, Thomas Stokely | Nov 2023 | Educational gallery

Fire-resistant plant profiles: Perennials

Choose the right perennial plants for your fire-resistant landscape with this comprehensive list for the Pacific Northwest.

Amy Jo Detweiler, Stephen Fitzgerald, Ariel Cowan, Neil Bell, Thomas Stokely | Nov 2023 | Educational gallery

Fire-resistant plants for home landscapes

Home landscaping is an important part of a community's resistance to wildfire. Learn what plants can help you create an attractive environment and reduce the risk of fire.

Amy Jo Detweiler, Stephen Fitzgerald, Ariel Cowan, Neil Bell, Thomas Stokely | Oct 2023 | OSU Extension Catalog

Are dead tree trunks a fire risk?

P: I live in a forested area of Deschutes County. I think that deadfall (cut trunks laying on the forest floor) left to decompose improves the health of the forest, but I am wondering if it also increases fire risk.

R: View answer | View all featured questions

Oregon State University Extension Service

EM 9386  |  Published April 2023, Reviewed 2023
View online: https://extension.oregonstate.edu/pub/em-9386

Prescribed Fire Basics: Fuels

Ariel Cowan, Christopher Adlam and Carrie Berger
Fire consuming pine trees at night
EM 9386
Prescribed fire focuses on addressing the overabundance of fuels on the ground. Fuels can include grass, leaf litter, sticks, shrubs and trees. Along with weather and topography, fuel is one of the key factors that affect how a fire behaves during a prescribed burn.
Prescribed fire focuses on addressing the overabundance of fuels on the ground. Fuels can include grass, leaf litter, sticks, shrubs and trees. Along with weather and topography, fuel is one of the key factors that affect how a fire behaves during a prescribed burn. Fuel size, shape, compactness, chemical composition, arrangement, moisture content and amount influence fire intensity, rate of spread and burn severity.
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© 2023 Oregon State University. Extension work is a cooperative program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension Service offers educational programs, activities, and materials without discrimination on the basis of race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, familial/parental status, income derived from a public assistance program, political beliefs, genetic information, veteran’s status, reprisal or retaliation for prior civil rights activity. (Not all prohibited bases apply to all programs.)

Accessibility: This publication will be made available in an accessible alternative format upon request. Please contact [email protected] or 541-737-3311.

Oregon State University Extension Service

EM 9388  |  Published April 2023, Reviewed 2023
View online: https://extension.oregonstate.edu/pub/em-9388

Prescribed Fire Basics: Monitoring and Evaluation

Christopher Adlam, Ariel Cowan and Carrie Berger
burned area, scorched trees
EM 9388
Prescribed fires are used to achieve specific goals. Monitoring and evaluation ensure that the burn plan is followed and its goals are met.
Prescribed fires are used to achieve specific goals. Monitoring and evaluation ensure that the burn plan is followed and its goals are met.
Prescribed fires are used to achieve specific goals. Monitoring and evaluation ensure that the burn plan is followed and its goals are met.
View now

© 2023 Oregon State University. Extension work is a cooperative program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension Service offers educational programs, activities, and materials without discrimination on the basis of race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, familial/parental status, income derived from a public assistance program, political beliefs, genetic information, veteran’s status, reprisal or retaliation for prior civil rights activity. (Not all prohibited bases apply to all programs.)

Accessibility: This publication will be made available in an accessible alternative format upon request. Please contact [email protected] or 541-737-3311.

Episode 19: OSU Extension Fire Program Team (in English)

In this episode, Lauren Grand gets to know the members of the OSU Extension Fire Program.

Lauren Grand, Aaron Groth, Carrie Berger, Ariel Cowan, Katherine Wollstein, Christopher Adlam, John Rizza, Emily Jane Davis | May 2022 | Podcast episode

Episode 14: Forest Fungi (in English)

In this episode, Lauren Grand and Ariel Cowan discuss the role fungi play in maintaining a healthy forest.

Lauren Grand, Ariel Cowan | Mar 2022 | Podcast episode

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