Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
University of California
Division of Agriculture and Natural Resources

Posts Tagged: prescribed fire

20-year study confirms California forests are healthier when burned or thinned

UC Berkeley's Blodgett Forest Research Station is the home of an ongoing, 20-year study investigating the impacts of prescribed fire and resoration thinning on forest health and wildfire risk in the Sierra Nevada. Photo by Ariel Roughton
A 20-year experiment in the Sierra Nevada confirms that different forest management techniques — prescribed burning, restoration thinning or a combination of both — are effective at reducing the risk of catastrophic wildfire in California.
 
These treatments also improve forest health, making trees more resilient to stressors like drought and bark beetles, and they do not negatively impact plant or wildlife biodiversity within individual tree stands, the research found. The findings of the experiment, called the Fire Surrogate Study, are published online in the journal Ecological Applications.
 
"The research is pretty darn clear that these treatments are effective — very effective," said study lead author Scott Stephens, a professor of fire science at the University of California, Berkeley. "I hope this lets people know that there is great hope in doing these treatments at scale, without any negative consequences."
 
Last year, California announced a strategic plan for expanding the use of prescribed fire to 400,000 acres annually by 2025. However, the use of beneficial fire continues to be hindered by multiple factors, including the lack of a trained workforce, the need for specific weather conditions for burning, and fears about potential risks.
 
This study shows that restoration thinning is also a viable option for forest management and can be used in tandem with beneficial fire without harming forest health or biodiversity.
 
"Our findings show that there's not just one solution — there are multiple things that you can do to impact the risk of catastrophic fire," said study co-author Ariel Roughton, research station manager at Berkeley Forests. "Folks can choose from different combinations of treatments that might fit their needs, and we can show them how those treatments might impact things like wildfire behavior, tree growth and carbon holding in their forests."

UC Berkeley's Blodgett Forest Research Station is a model for how California can reduce the risk of severe wildfire and improve the ecological health of its forests. (UC Berkeley video by Roxanne Makasdjian and Jason Blalock)

Surrogates to wildfire

Over the past two decades, Stephens and other researchers at Berkeley Forests have used prescribed burning, restoration thinning or a combination of both to treat plots of land at Blodgett Forest Research Station, a 4,000-acre experimental forest located about 65 miles northeast of Sacramento on the unceded lands of the Nisenan peoples.
 
The Fire Surrogate Study was one of 13 studies across the U.S. first launched in 1999 with funding from the U.S. Joint Fire Science Program. Its aim was to study whether the two treatments could mimic the beneficial impacts of lightning fires and Indigenous burning practices on California's forests, which have become dense and overgrown after a century of logging and fire suppression.
 
"Prescribed fire and restoration thinning are both surrogates for wildfire, a key process that happened frequently in California before European colonization," Stephens said. "The impetus of this study was: If you're going to implement these treatments at a large scale, is there anything that's going to be lost?"
 
This photo of a research plot at Blodgett Forest was taken by Scott Stephens in 2002, before being treated with fire.
The study created nine experimental plots and three control plots at Blodgett. Three of the experimental plots were managed only using prescribed burns; three burns occurred over the course of 20 years. Three other experimental plots were first thinned and then burned, and the final three were treated only with restoration thinning. The control plots were left to grow without human interference except continued fire suppression.
 
At the end of the 20-year period, the researchers surveyed the vegetation in each plot and used computational modeling to estimate how many trees were likely to survive wildfire. They found that all three types of experimental plots were significantly more resilient to wildfire than the control plots, showing an 80% likelihood that at least 80% of trees would survive.
 
They also calculated the "index of competition," a measure of how strongly trees must compete for resources like sunlight, water and soil nutrients. By removing excess trees and vegetation, thinning and burning both limited the amount of competition between trees, making them less vulnerable to stressors, like drought and bark beetles.
 
However, the plots that were treated with a combination of thinning and fire had the best index of competition, suggesting that they would be the most resilient to the impacts of climate change.
 
"When you combine thinning with fire, you're able to modify all different levels of the forest structure, and it speeds up the timeline for achieving a more resilient structure," Roughton said.
 
Restoration thinning can also provide financial benefits: Often, larger trees can be sold to sawmills, and the proceeds can be used to help offset the cost of forest management. Over the course of 20 years, the treatments at Blodgett were entirely paid for by revenue from timber.
 
"When I go to Sacramento and talk about [forest management] with legislators, the first question they always ask is about cost," Stephens said. "People in the state government are telling us that they can't be the sole source support for this work. That's why the economics are so important."
Scott Stephens at Blodgett Forest Research Station in late 2021. Evett Kilmartin/UC Regents

Trial by fire

In September 2022, the forests at Blodgett were subjected to a real-life test: On the morning of Sept. 9, 2022, the Mosquito Fire breached the north side of the property, burning approximately 300 acres before it was contained two days later.
 
One of the study's control plots was located directly in the path of the blaze, and more than 60% of the trees in this plot were completely scorched. However, neighboring experimental plots that had been treated with prescribed burns served as “fuel breaks,” burning less hot than the control and acting as staging areas for firefighters.
 
"We think that, overall, our management actions, coupled with the weather, did have a pretty big impact on the behavior of the fire," Roughton said.
 
The researchers have received a four-year grant from the Joint Fire Science Program to continue the Fire Surrogate Project. With the help of the grant, they have established a new control plot to replace the one that burned and plan to apply a fourth fire to the experimental burn-only plots.
 
They are also collaborating with the United Auburn Indian Community to reestablish Indigenous cultural burning at Blodgett.
 
"We want to be part of the solution, and that's part of our mission at Blodgett," Roughton said. "We hope that by doing these studies and bringing folks here to see the effects of the different treatments, they will take that back and apply it to the land that they're going to be managing."
 
Additional co-authors of the study include Daniel E. Foster, John J. Battles, Alexis A. Bernal, Brandon M. Collins, Rachelle Hedges and Robert A. York of UC Berkeley and Jason J. Moghaddas of the Spatial Informatics Group. This project was originally funded by the U.S. Joint Fire Science Program, and it has received additional support from the California Fourth Climate Change Assessment, the McIntire-Stennis Program, the California Greenhouse Gas Reduction Fund, and the UC Office of the President's UC Laboratory Fees Research Program. Smart Practices and Architecture for Prescribed Fires in California was also important to keeping this long-term project active.
 
Posted on Wednesday, December 13, 2023 at 8:45 AM
  • Author: Kara Manke, PhD, UC Berkeley Media Relations

Reforms needed to expand prescribed burns

Although prescribed fire is a crucial tool, barriers prevent practitioners from performing the burns at the scale that is needed. Photo by Evett Kilmartin

Study highlights 4 strategies to overcome barriers to prescribed fire in the West

Prescribed fire, which mimics natural fire regimes, can help improve forest health and reduce the likelihood of catastrophic wildfire. But this management tool is underused in the fire-prone U.S. West and Baja California, Mexico, due to several barriers.

A paper from the University of California, Davis, pinpoints those obstacles and suggests four key strategies that policymakers and land managers can take to get more “good fire” on the ground in North America's fire-adapted ecosystems. The paper also provides examples of how people are surmounting some of these obstacles.

“Prescribed fire is one of the most important tools we have for restoring natural fire regimes and undoing the effects of a century of fire suppression,” said lead author John Williams, a project scientist with the UC Davis Department of Environmental Science and Policy. “But there are a number top-down barriers at the upper levels of management that keep us from growing the workforce and getting burns done at the scale and extent needed. We point out some of the big ways that agency leaders and policymakers can dismantle those barriers and empower the full range of people capable of doing this work, from burn bosses and citizen-prescribed burn associations to nonprofits and tribal groups.”

The paper, published in the journal Frontiers in Ecology and the Environment, centers on the North American Mediterranean climate zone, which includes most of California, southwestern Oregon, western Nevada and northern Baja California in Mexico. Lenya Quinn-Davidson, director of UC Agriculture and Natural Resources' Fire Network, is a co-author of the paper.

John Williams, a UC Davis project scientist, at a prescribed burn with a private landowner in Placerville, California in 2022. Photo by Tim McConville, UC Davis

A natural process

Fire is a natural process that has helped shape this region, but the area has experienced a spike in destructive, high-severity wildfires over the past decade. In fact, three of the five largest wildfires in continental U.S. history occurred in this region in just the past five years. This is due to a combination of climate change and fuel accumulation driven by a century of policies that encouraged fire suppression, curtailed Indigenous cultural burning, and favored harvest of the largest, most fire-tolerant trees, the study notes.

While scientists and resource managers recognize the need for more prescribed fire, its application has not kept pace with the enormity of the challenge. The study said that is because management policies prioritize fire suppression over prevention. There is also a limited fire workforce; regulatory hurdles like permitting, insurance and liability; and few incentives or protections for landowners, tribal members and other people who burn responsibly.

4 key strategies

Researchers identified four key areas where supportive institutional and agency leadership can help expand prescribed fire in the region:

1) Fire culture. After decades of emphasizing wildfire suppression, current fire management culture “does not adequately promote prescribed fire as a management tool,” the study said. Support for prescribed fire along the entire chain of command within agencies is needed to foster a new culture that incentivizes and enables prescribed fire practitioners within and outside of government agencies.

2) Funding. Prescribed fire is considerably more cost-effective than wildfire suppression, which can cost more than $2 billion a year in the U.S., but there is little dedicated funding for prescribed fire projects and lack of flexibility as to when such money can be spent. This impedes fire staffing and limits the kinds of projects that can be done. Year-round, dedicated funding and resources could help increase prescribed fire capacity.

A recently published study states that management policies continue to prioritize fire suppression over preventative measures, such as prescribed fire. Photo by Evett Kilmartin

3) Capacity building and cooperation. Connecting agencies with landowners, community members, tribes, prescribed burning associations (PBAs), prescribed fire training exchanges (TREXs) and others can facilitate responsible, effective prescribed fire and cultural burning exchanges. Such groups have limited reach and require investment and support to meet demand.

Inter-organizational agreements can also help local, state and federal agencies share resources and staffing. Formalizing and fully integrating such agreements into fire management plans remains a challenge, the study said. Collaborations that support Indigenous cultural burning are also key.

Partnerships must recognize the unique dimensions of cultural burning, which are inseparable from Indigenous culture. Educating land managers and decision makers about tribal sovereignty and federal American Indian law is critical. Introducing legislation that supports cultural burning can also foster such collaborations.

4) Monitoring and adaptive management. Designated funding and personnel for quantitative monitoring after a prescribed burn can help practitioners better measure success and then apply lessons to future burns.

“All of the barriers identified in the study can be overcome, and they have been at least partially resolved in other parts of the U.S., as well as in other Mediterranean climate regions, such as southwestern Australia,” said co-author Hugh Safford, a research ecologist in the UC Davis Department of Environmental Science and Policy and director of the California Prescribed Fire Monitoring Program. “Fundamental to setting the situation right is developing a culture of safe and regular fire use in California and neighboring states by all landowners and managers, and reducing the officiousness, risk aversion and bureaucracy that hinders access to the tool by the public.”

Additional co-authors include Ashley Grupenhoff and Beth Rose Middleton of UC Davis; Joe Restaino of CAL FIRE; Edward Smith of The Nature Conservancy; Chris Adlam of Oregon State University; and Hiram Rivera-Huerta of Autonomous University of Baja California, Mexico.

This research received financial support from the California Department of Forestry and Fire Protection (CAL FIRE).

This story was originally published on the UC Davis News site.

Posted on Wednesday, November 15, 2023 at 9:50 AM
  • Author: Kat Kerlin, UC Davis
Focus Area Tags: Environment, Natural Resources

A Glimpse into Forestry Education: A Conversation with Yolo County’s Tracy Katelman

For Yolo County's Tracy Katelman, being a self-proclaimed “treehugger” was a part of her identity. A forester though? “I wasn't planning on getting my forester's license,” she told me. “When I helped start the Institute...

Posted on Monday, July 3, 2023 at 1:40 PM
Focus Area Tags: Environment

Prescribed fire, cultural burning get liability support to reduce wildfire risks in California

A lack of liability insurance for practitioners has been a major barrier to increasing the use of prescribed fire to reduce wildfire fuels. Photo by Lenya Quinn-Davidson

First-of-its-kind fund to offset losses if prescribed or cultural burn damages property

The State of California rolled out a first-of-its-kind approach to curbing the state's catastrophic wildfire problem on June 19 by providing new protections for prescribed fire and cultural burning practitioners. The $20 million allocated for the “Prescribed Fire Liability Claims Fund Pilot” will cover losses in the rare instance that a prescribed or cultural burn escapes control.

California Senator Bill Dodd authored the 2022 bill (Senate Bill 926) that made this fund possible, continuing his many years of leadership on wildfire and prescribed fire-related legislation.

“Prescribed fire is a cost-effective way to minimize the scope and severity of wildfires,” said Sen. Bill Dodd, D-Napa. “It's a tool that has been used for millennia by Native American tribes and one that will continue to play a big role in wildfire prevention. The rollout of this fund is a big step toward keeping California communities safe.”

The use of prescribed fire and cultural burning — sometimes collectively called “good” or “beneficial” fire — is a key component of wildfire risk management in California. These projects reduce hazardous fuels, help restore ecological and cultural values, and make our communities safer and our ecosystems more resilient to wildfire. However, lack of liability insurance for practitioners has been a major barrier to increasing the use of prescribed fire, even as firefighters, fire scientists, at-risk communities and state, federal and tribal leaders call for more.

The Prescribed Fire Claims Fund pilot project removes a significant barrier to obtaining insurance for potential damages from a prescribed fire or cultural burn conducted by a certified prescribed fire burn boss or a cultural fire practitioner,” said CAL FIRE Director/Chief Joe Tyler. “As we continue to focus on increasing the resiliency of the state's forests, creating a pathway for private burn bosses to have the significant protection this claims fund provides is a critical step toward reaching the goals of the Governor's Wildfire and Forest Resilience Action Plan.”

The fund will provide up to $2 million in coverage for prescribed fire projects led by a qualified burn boss or cultural practitioner. The fund is meant to demonstrate that prescribed fire, when carefully planned, resources and implemented, is a low-risk land management tool that mitigates the larger, more damaging risks of high-severity wildfires. The fund is the first of its kind nationally and is the result of several years of collaboration by a diversity of partners working with Senator Dodd's Office, including The Nature Conservancy, CAL FIRE, the University of California Cooperative Extension, the California Department of Insurance, tribal representatives and many others.

“Launching this program is a key step in scaling ecologically based forest management to reduce the risk of megafires. We appreciate Senator Dodd's leadership and the expedient work of CAL FIRE and beneficial fire practitioners to develop this fund as the next fire season quickly approaches,” said Dan Porter, The Nature Conservancy's Forest Program director.

The fund will also advance cultural burning, helping Indigenous Californians restore their connection to fire.

“Cultural burning is an essential practice to meet diverse objectives, including biodiversity stewardship, ecological health and community safety. The availability of this pilot fund provides cultural fire practitioners a safeguard against financial risk in the unlikely event of an escaped burn. This is a significant incentive to support revitalization of burning traditions following the legacy of policies banning such practices,” said Don Hankins, professor of geography and planning at CSU Chico and co-founder of the Indigenous Stewardship Network.

This fund is part of a larger vision for restoring beneficial fire across California's fire-adapted ecosystems. Last year, the state released its Strategic Plan for Expanding the Use of Beneficial Fire, which identified this claims fund as a priority. The state has also rolled out a state-certified burn boss program, changed the liability standard for prescribed fire, and made investments in prescribed burn associations, agency staffing, and other related efforts.

“We are using every tool to protect Californians, including using prescribed fire to fight wildfires,” said Insurance Commissioner Ricardo Lara. “The Prescribed Fire Claims fund will be critical to assisting our tribal groups, nonprofits and private landowners who are leading the way. This is an example of government being innovative and leading by example. The data that we get from the claims fund is going to be essential to our on-going education with insurance companies to support insuring this important work.”

Lenya Quinn-Davidson, Fire Network director for the University of California Agriculture and Natural Resources, says the recent momentum is unparalleled.

“Californians are desperate to have a better relationship with fire, and only with innovative approaches like this claims fund will we be able to unleash the good work that needs to happen,” said Quinn-Davidson. “It's a challenging time to be working on fire in California, but also an incredibly inspiring time.”

More information about the Pilot Prescribed Fire Claims Fund can be found on the CAL FIRE Website at https://www.fire.ca.gov/what-we-do/natural-resource-management/prescribed-fire, including frequently asked questions and an enrollment form for practitioners.

Posted on Tuesday, June 20, 2023 at 2:39 PM
Focus Area Tags: Environment

Public invited to observe prescribed fire training June 4-9

Prescribed burns will be open for the public to observe along California's Central Coast, most likely June 4-9, depending on the weather. This image depicts a TREX burn from 2022. Photo by J. Childress

The Monterey Bay area will host part of the first California Central Coast Prescribed Fire Training Exchange, or Cal-TREX.

Fire practitioners from across the state, greater North America and international locations (Spain, Honduras, Costa Rica, Ecuador) are gathering for a Prescribed Fire Training Exchange on June 3-10.

The training is hosted by the Central Coast Prescribed Burn Association, which empowers the public to build a culture of “good fire” and helps private landowners conduct prescribed burns in Monterey, San Benito and Santa Cruz counties.

Prescribed burns will be open for the public to observe on various days throughout the training, most likely June 4-9, depending on the weather. Please see the CCPBA webpage for updates on upcoming burns: http://calpba.org/centralcoastpba.

Prescribed Fire Training Exchanges (TREX) first came to Northern California in 2013, and have made a dynamic, positive cultural shift concerning prescribed fire, within both regional fire services and the general public. These “good fire” TREX events have drawn significant attention, especially in the context of more severe wildfire seasons.

After months of cross-organizational cooperative planning, participants in the weeklong training will be burning a mix of grassland, oak woodland and shrub vegetation types, and make a lasting, positive change concerning “good fire” on the Central Coast.

The TREX will provide experiential training opportunities to advance regional prescribed fire capacity, while also enhancing research to better understand the ecological response of wild plant and animal species following fire.

While the CCTREX works closely with the Monterey Bay Air Resources District (MBARD) to assure good smoke dispersal, smoke may be seen and present in these areas during and after a burn. This image depicts at TREX burn in 2022. Photo by J. Childress

At this TREX event, participants will learn how to safely conduct prescribed burns in various vegetation types across three counties. Along with multiple prescribed burns, the weeklong program will include lectures and seminars on local fire ecology of plant and animal species, tribal burning practices and burn planning led by multiple burn bosses and other experts.

Burn locations may include the Nyland property (owned by Trust for Public Land and San Benito Agricultural Land Trust) near San Juan Bautista, the Santa Lucia Conservancy near Carmel Valley and the Kechun Village (owned by the Nason family) in Arroyo Seco.

Be advised, while the CCTREX works closely with the Monterey Bay Air Resources District (MBARD) to assure good smoke dispersal, smoke may be seen and present in these areas during and after a burn. Please see the CCPBA webpage for updates on upcoming burns: http://calpba.org/centralcoastpba.

BurnBot, a new technology featuring a mobile burn chamber, remote-controlled mastication and fire drone systems, will be used for the prescribed burn on June 4. To observe the Nyland burn on June 4, register at https://bit.ly/CCPBApublicRxfire. Details including time and directions will be emailed to registered participants.

Participants and partners include members of the Amah Mutsun Tribal Band and the Esselen Tribe of Monterey County, University of California Agriculture and Natural Resources, Resource Conservation District of Monterey County, CAL FIRE, local land trusts, scientists, ranchers, students, researchers, land managers and others. The CCPBA is funded by two CAL FIRE wildfire prevention grants.

For more information, contact Jamie Tuitele-Lewis, fire fuel mitigation program and forest health coordinator, at jtlewis@rcdmonterey.org or Barb Satink Wolfson, UC Cooperative Extension area fire advisor, at bsatinkwolfson@ucanr.edu.

Posted on Friday, May 26, 2023 at 10:38 AM
  • Author: Jamie Tuitele-Lewis, Resource Conservation District of Monterey County
  • Author: Barb Satink Wolfson, UC ANR
Focus Area Tags: Environment, Natural Resources

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