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SCIENTISTS SAY GLOBAL WARMING LIMITS ABILITY TO
MANAGE WILDLAND FIRE
“We will likely see wholesale conversions of
habitats from one type to another.”
San Diego _Changes in climate will limit humans’ ability
to manage wildland fire and apply prescribed fire across the landscape,
according to the “San Diego Declaration on Climate Change and Fire
Management,” released today by the Association for Fire Ecology, the
world’s largest assembly of fire ecologists.
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“Under future drought and high heat scenarios,” the Declaration reads,
“fires may become larger more quickly and be more difficult to manage.
Fire suppression costs may continue to increase, with decreasing
effectiveness under extreme fire weather and fuel conditions. Extreme
fire events are likely to occur more frequently.”
Association President Robin Wills of Oakland, Calif. said the five-page
Declaration is being submitted for delegate concurrence at the Third
International Fire Ecology and Management Congress to be held November
13–17, 2006, in San Diego.
“We’re going to see more fire, not less,” Wills said, “and these
increases in wildfire occurrence and severity are going to be part of
our new reality. We, as a society, must be prepared to cope with these
changes.”
“Abrupt climate change can lead to rapid and continuous changes that
disrupt natural processes and plant communities,” reads the Declaration.
“Managers are not safe in assuming that tomorrow’s climate will mimic
that of the last several decades.
“Increased temperatures are projected to lead to broad-scale alteration
of storm tracks thereby changing precipitation patterns. Historical data
show that such changes in past millennia were often accompanied by
disruption of fire regimes with major migration and reorganization of
vegetation at regional and continental scales.
“Some believe that the impacts of climate change may already be emerging
as seen in more frequent outbreaks of very large fires, widespread tree
die-offs across the southwest United States, expansive insect
infestations in the Rocky Mountains, and more rapid and earlier melting
of snow packs globally.
“Currently, we are observing wildland fire conditions previously
considered rare, such as extreme wildfire events (e.g. high heat release
and severe impact to ecosystems), lengthened wildfire seasons, and
large-scale wildfires in fire-sensitive ecosystems (e.g. tropical rain
forests and arid deserts),” the Declaration continues. “Research
indicates that climate change has, in part, caused these trends.
Therefore, we are deeply concerned that wildfire conditions will only
become exacerbated by further climate change.”
In the western United States, researchers recently confirmed an increase
in fire season duration with large forest fires starting both earlier
and later in the year than in the recent past. “These changes are
correlated with earlier spring snowmelt dates,” the Declaration reads.
“The ecological impacts are wide-reaching because of the high severity
of these fires burning through heavy fuel loads. With global
temperatures projected to rise throughout this century, we expect
increases in fire season length and fire size.
“As temperatures increase, we should expect fire to become a primary
agent of vegetation change in many natural ecosystems. As such, we will
likely see wholesale conversions of habitats from one type to another.
For example, temperate dry forests could be converted to grasslands or
moist tropical forests could be converted to dry woodlands.
“High-severity fires could also eliminate entire forests and then
seedling reestablishment could be hindered by a new and unsuitable
microclimate. Plant and animal species already vulnerable due to human
activities, would be put at greater risk of extinction as their
traditional habitats become irreversibly modified by severe fire.
Finally, extreme wildfire events and a lengthened fire season would
greatly increase the risk to human lives and infrastructures,
particularly within the wildland urban interface,” the Declaration
concludes.
Wills said, “What’s important about the Declaration is that we need to
change our approach to managing wildland fire. Traditional approaches of
suppression need to adapt to those changes in vegetation and resulting
changes in fire regimes. There is a direct relationship between changes
in climate and changes in the way fires behave and we need to make a
corresponding change in our fire management.”
Fire Congress Chair Melanie Miller of Missoula, Mont., said over 500
papers and 120 posters will be officially presented to around 3,000
attendees, including 250 papers to be received in 31 special sessions at
the Congress. “All of the world’s top fire ecologists are gathering in
one place,” Miller said. “We expect this to be the largest gathering of
fire professionals in history.”
The Fire Congress will consist of lectures, field trips, workshops,
posters, and exhibits showcasing new products, technology, and tools on
the leading edge of international fire science and fire policy. The Fire
Congress’s official website is
http://emmps.wsu.edu/firecongress.
Registration is available at:
http://emmps.wsu.edu/firecongress/register.html.
The public and reporters are welcome to attend all events, Miller said.
The Association for Fire Ecology is an organization of professionals
dedicated to improving the knowledge and use of fire ecology in land
management. Utilizing conferences, an on-line journal and selected
publications, AFE continues to heighten awareness of the role of fire in
contemporary ecosystems. For more information, go to:
http://www.fireecology.net.
Further Information:
The Nov. 13 – 17, 2006, Third International Fire Ecology and Management
Congress will be held at the Town and Country Resort and Convention
Center, located at 500 Hotel Circle North; San Diego, CA 92108; Phone:
619-291-7131; Fax: 619-294-5957;
www.towncountry.com/
Contact AFE Board President Robin Wills at: 530-898-9826 or
510-817-1432.
Contact AFE Fire Congress Chair Melanie Miller at: 406-829-6941.
Contact AFE Administrative Director Carrie Shaw at: 530-204-7688.
Contact AFE Fire Congress Media Liaison Paul Richards at: 406-225-4235.
Contact WSU Extension Congress Manager Detlef Decker at: 509-335-2929.
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