Summit County session to focus on forest management

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What now, forests?

Panel features White River NF chief Scott Fitzwilliams and Colorado State Forest Service director Mike Lester

Staff Report

FRISCO — A lot of seedlings have sprouted since Summit County experienced the biggest pine beetle outbreak that anyone can remember, and the debate over the future of Colorado’s forests is very much alive — how much of the forest can we manage, and how can we make sure that will help forests in the long run?

With the goal of creating more resilient and diverse forests, one aspect of the discussion centers on differences between active and passive management. This week, the Summit County Forest Health Task Force will host a panel discussion on forest management (Nov. 20, 6-8 p.m. at the Summit County Community & Senior Center, County Commons). Continue reading

Study shows some types of beetle outbreaks may inhibit crown fires in Pacific Northwest forests

Spruce beetle populations are surging in the southern Rocky Mountains. bberwyn photo.

Spruce beetle populations are surging in the southern Rocky Mountains. bberwyn photo.

Study calls out inaccurate media reports about links between bugs and wildfires

By Bob Berwyn

FRISCO — Dire warnings about how beetle outbreaks make forests more prone to fires are ringing increasingly hollow, as more and more forest research shows that other factors — especially weather — are more important drivers. In some cases, defoliation by bugs may actually lessen the the threat of disastrous crown fires.

In one of the latest studies, researchers with the University of Oregon and the U.S. Forest Service took a close look at the relationship between fires and spruce budworm infestations in the Pacific Northwest. They found that defoliation reduces both torching and crowning potential. Continue reading

Human disturbance the key factor driving changes in eastern forests

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A new study finds that human disturbance drives forest changes in eastern U.S. bberwyn photo

Fire suppression, land-clearing outweigh climate factors, study says

Staff Report

FRISCO — Climate change may only be a secondary factor in the changing composition of Eastern forests. Changes in disturbance regimes have had a much bigger impact in the past century or so, according to Marc Abrams, a researcher in Penn State’s College of Agricultural Sciences.

Abrams says eastern forests are still in a state of disequilibrium resulting from massive clear-cutting and burning during the late 1800s and early 1900s, and aggressive forest fire suppression has also had a far greater influence on shifts in dominant tree species than minor differences in temperature. Continue reading

Study: Pine beetle outbreaks not a big factor in the ecological severity of Western wildfires

Dead and dying lodgepole pines in Frisco, Colorado.

Dead and dying lodgepole pines in Frisco, Colorado.

Study shows no clear link between beetle-kill and ecological severity of western wildfires

Staff Report

FRISCO — For all their frenzied tree-killing during the past 10 years, mountain pine beetles haven’t been a big factor in the ecological severity of wildfires in the West, a team of university scientists said this week.

Weather and topography are the main factors in determining how much damage a wildfire does to forest ecosystems, according to the researchers with the University of Wisconsin-Madison and the Washington State Department of Natural Resources.

The new study, published in the Proceedings of the National Academy of Sciences, provides some of the first rigorous field data to test whether fires that burn in areas impacted by mountain pine beetles are more ecologically severe than in those not attacked by the native bug. The study didn’t look at fire behavior, including how fast they spread or how dangerous they are to fight. Continue reading

New study challenges the conventional wisdom on severity of Front Range wildfires in Colorado

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A new study examines the history of wildfires along the Colorado Front Range.

Historic wildfires in the pre-suppression era burned just as intensely, scientists say

Staff Report

FRISCO — New research challenges the conventional wisdom that wildfires along the Colorado Front Range have become more severe.

A detailed assessment of fire history across more 1 million acres of forest suggests that only 16 percent of the area showed a shift from historically low-severity fires to severe, potential crown fires that can jump from treetop to treetop.

Even in the days before fire suppression, fires along the Front Range were often destructive, killing many mature trees in the burn areas, the study concluded. Continue reading

Global warming triggers surge in tree growth

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Global warming speeds tree growth. bberwyn photo.

Some species growing up 70 percent faster than 50 years ago

Staff Report

FRISCO — Some trees are growing up to 70 percent faster than just a half century ago, as global warming supercharges their metabolism, German researchers report in a new study published in Nature Communications.

Three decades ago, forest dieback was a hot topic, with the very survival of large forest ecosystems seemingly in doubt. But instead of a collapse, the latest studies indicate that forests have actually been growing at a faster rate. The new data from the Technische Universität München comes from forest plots that have been closely monitored since 1870. The forested areas are also representative of the typical climate and environmental conditions found in Central Europe. Continue reading

Environment: New mapping project traces global forest degradation

Spruce beetle populations are surging in the southern Rocky Mountains.

Spruce beetle populations are surging in the southern Rocky Mountains.

Conservation advocates say more protection needed to protect critical ecosystem services

Staff Report

FRISCO — Forest degradation continues unchecked in many parts of the world and especially in the northern hemisphere boreal forest belt in Canada, Russia and Alaska, conservation advocates said this week, unveiling new maps showing forest impacts across more than 100 million hectares — an are three times the size of Germany.

Just since 2000, about 8 percent of the world’s remaining intact forest landscapes have been subject to some type of degradation from human activities, including logging and energy development.

The Greenpeace GIS Laboratory, the University of Maryland and Transparent World, in collaboration with the World Resources Institute and WWF-Russia, used satellite technology to determine the location and extent of the world’s last remaining large undisturbed forests, important harbors for biodiversity that are still unaffected by logging and infrastructure such as roads, mining and oil or gas development. Continue reading

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