Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New report examines effects of trees killed by bark beetles on wildfire

31.05.2012
A recent report analyzing a range of published studies on the impact of bark beetles on trees in the U.S. and Canada provides a more complete picture of the effect of this destructive insect on wildfires.

Previously published studies reported a wide variety of—and often contradictory—conclusions about the bark beetles' effect on fuels and wildfire.

A team of researchers from the USDA Forest Service's Pacific Southwest Research and Pacific Northwest Research stations and the University of Idaho set out to identify key knowledge gaps by developing a conceptual model based on the review of 39 previously published studies. The scientists used the model to describe expected changes of fuels and fire behavior following bark beetle outbreaks.

Key findings, which appeared in the journal Forest Ecology and Management, include:

Bark beetle outbreaks can indeed affect fuels and fire behavior;

However, the types of change depend on time since outbreak and fuels or fire characteristic of interest;

Based on agreement and disagreement of the published studies, and the identified gaps in scientific knowledge, the paper's authors also assigned confidence levels to their conceptual model. Lower confidence levels occurred in fuels responses in the red phase, as well as in responses of crown fire behavior in red and gray phases;

The research question addressed in a study (comparison with other drivers of fire, such as climate or comparison with an unattacked stand) influenced its conclusions; and

These findings suggest that it is not possible to reliably generalize about the effects of bark beetle-caused tree mortality on fuels or fire characteristics.

"This study was prompted by concerns about the possibility of more extreme crown fire behavior in beetle-killed stands and public safety and structure loss, as well as impacts on firefighting operations," says co-author Jane Hayes, who also serves as assistant director of the Pacific Southwest Research Station. "Our aim was to synthesize available information to provide greater understanding to fire and resource managers who need to consider the effect of beetle-killed trees on future wildfire characteristics."

To read the full report, "Effects of bark beetle-caused tree mortality on wildfire," go to: http://www.fs.fed.us/pnw/pubs/journals/pnw_2012_hicke001.pdf

Headquartered in Albany, Calif., the Pacific Southwest Research develops and communicates science needed to sustain forest ecosystems and other benefits to society. It has research facilities in California, Hawaii and the U.S.–affiliated Pacific Islands. For more information, visit www.fs.fed.us/psw/

Sherri Eng | EurekAlert!
Further information:
http://www.fs.fed.us

More articles from Agricultural and Forestry Science:

nachricht Alkaline soil, sensible sensor
03.08.2017 | American Society of Agronomy

nachricht New 3-D model predicts best planting practices for farmers
26.06.2017 | Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

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

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

What the world's tiniest 'monster truck' reveals

23.08.2017 | Life Sciences

Treating arthritis with algae

23.08.2017 | Life Sciences

Witnessing turbulent motion in the atmosphere of a distant star

23.08.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>