Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A Look Back Suggests More Catastrophic Fires Ahead for Western U.S.

28.02.2012
Catastrophic wildfires are on the rise in the western United States and a set of conditions may be contributing to a perfect storm for more fires, according to NAU’s Scott Anderson, professor in the School of Earth Sciences and Environmental Sustainability.

Anderson said increased fuel loads in the forest are a result of fire suppression, a practice that, when combined with a projection of increasingly drier climates ahead, spells a recipe for increasing disaster for forested ecosystems.

While grazing and fire suppression have kept incidents of wildfires unusually low for most of the last century, the amounts of combustible biomass, temperatures and drought are all rising. The result, Anderson said, is a “fire deficit” in which current conditions and past fire suppression practices have pushed fire regimes out of equilibrium with climate.

“In the near future, since our forests and their fuel loads are not in balance with their natural fire regimens, we can expect to see additional huge fires such as last year’s Wallow Fire that burned 540,000 acres in Arizona and Las Conchas Fire that burned 156,000 acres in New Mexico,” he said.

Anderson and a team of researchers combined resources to examine existing records on charcoal deposits in lakebed sediments, which established a baseline of fire activity throughout the region. The team published its findings last week in the journal of The Proceedings of the National Academy of Sciences. The full research study is available online.

“We were able to link fire to changing climate in the West for much of the last 3,000 years,” Anderson said. “With the increase of Euro-Americans in the West, the patterns began to change, first with large fires associated with indiscriminant land clearance, railroad construction and so on, then later with fire suppression.”

Wildfires have been debated for years as either a destructive force of nature that should be eradicated or natural disturbance that keep ecosystems healthy. National policy over the last century had been to respond rapidly to suppress all wildfires, but with increasing occurrence of catastrophic wildfires in the region such practices have come into question. In recent years local forest managers have been given more latitude to evaluate which fires to suppress while ensuring public safety.

Anderson’s research could lead the way to reshaping policy on wildfire response and natural resource management, but he cautioned such a change might be too little too late.

“The fire deficit situation is unsustainable, now and long into the future,” he said. “If it is not addressed quickly—and many of us believe it is too late already—it will likely lead to widespread and long-enduring changes in forest types across the West.”

CONTACT:
Cynthia Brown
NAU Office of Public Affairs
(928) 523-0611
cynthia.brown@nau.edu

Cynthia Brown | Newswise Science News
Further information:
http://www.nau.edu

More articles from Ecology, The Environment and Conservation:

nachricht Listening in: Acoustic monitoring devices detect illegal hunting and logging
14.12.2017 | Gesellschaft für Ökologie e.V.

nachricht How fires are changing the tundra’s face
12.12.2017 | Gesellschaft für Ökologie e.V.

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: First-of-its-kind chemical oscillator offers new level of molecular control

DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.

Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...

Im Focus: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.

To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

Engineers program tiny robots to move, think like insects

15.12.2017 | Power and Electrical Engineering

One in 5 materials chemistry papers may be wrong, study suggests

15.12.2017 | Materials Sciences

New antbird species discovered in Peru by LSU ornithologists

15.12.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>