Posted on December 3, 2014 by Bob Berwyn
Findings challenge carbon-balance assumptions of woody biomass energy boosters
A forest health logging site on Swan Mountain near Dillon, Colorado. bberwyn photo.
FRISCO — Logging forests may have a more significant impact on carbon storage in soils than previously believed, Dartmouth College researchers found after taking a close look at at how timber harvesting affects mineral soil carbon over 100 years.
The study found that, while logging doesn’t immediately release carbon stored in a forest’s mineral soils into the atmosphere, it triggers a gradual release that may contribute to climate change over decades. Continue reading
Filed under: agriculture, climate and weather, Environment, Forest health, forests, global warming, US Forest Service | Tagged: carbon cycle, Environment, Forest health, forests, global warming, logging, soil carbon storage | 2 Comments »
Posted on November 18, 2014 by Bob Berwyn
What now, forests?
Panel features White River NF chief Scott Fitzwilliams and Colorado State Forest Service director Mike Lester
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
Filed under: Colorado, Environment, Forest health, forests, Summit County Colorado, US Forest Service, White River National Forest | Tagged: active forest management, Colorado, Forest health, Forest Service, White River National Forest | Leave a comment »
Posted on November 4, 2014 by Bob Berwyn
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
Filed under: Colorado, Environment, forest fires, Forest health, forests | Tagged: crown fires, Forest health, forests, western spruce budworm, Wildfires | Leave a comment »
Posted on October 21, 2014 by Bob Berwyn
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
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
Filed under: climate and weather, Environment, Forest health, forests, global warming | Tagged: climate change, Forest health, forests, global warming | 1 Comment »
Posted on September 10, 2014 by Bob Berwyn
Smoke from forest fires in Greece streams out across the Mediterranean Sea. GIF composite image via NASA and Wikipedia.
Study projects 200 percent increase in burned areas by 2090 without mitigation and adaptation
FRISCO —The American West isn’t alone in facing an increased wildfire threat. Global warming is expected to result in a sharp increase in European forest fires during the coming decades. By 2090, areas burned by fires could increase by as much as 200 percent, according to a new study published in the journal Regional Environmental Change.
Warmer temperatures and longer droughts will combine to fuel forest fire conditions in areas that are already susceptible, particularly the Mediterranean region, the researchers said, suggesting that better forest management, including preventive fires, could keep the increase to less than 50 percent. Continue reading
Filed under: climate and weather, Environment, forest fires, forests, global warming | Tagged: climate change, Europe, Forest health, forests, global warming, IIASA, Wildfires | Leave a comment »
Posted on September 5, 2014 by Bob Berwyn
Spruce beetle populations are surging in the southern Rocky Mountains.
Conservation advocates say more protection needed to protect critical ecosystem services
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
Filed under: biodiversity, Environment, Forest health, forests | Tagged: Environment, forest fragmentation, Forest health, forests, global carbon cycle | Leave a comment »
Posted on September 2, 2014 by Bob Berwyn
New inventory assesses state’s woodland resources
FRISCO — Mortality is increasing and growth is slowing down in New Mexico’s forest lands, according to a new forest inventory released in late August. The only species showing overall growth are ponderosa and piñon pines, as well as junipers, as insects, wildfires drought and disease take an increasing toll on the state’s woodlands.
Forests grow on about 25 million acres in New Mexico, with 44 percent on private lands and 31 percent on national forest lands. About 40 percent (10.8 million acres) of the forests are piñon-juniper woodlands, by far the state’s most extensive forest type. Gambel oak is the most abundant tree species by number of trees, and ponderosa pine is the most abundant by volume or biomass. Overall, researchers estimate there are more than 6 billion live trees growing in the state.
The inventory documented the drought-induced piñon pine die-off in the early 2000s, estimating that about 8 percent the species died, but noted that the mortality rate has tapered off.New Mexico’s aspen forests, covering about 380,000 acres, held steady in the past decade. Continue reading
Filed under: climate and weather, Drought, Environment, forest fires, Forest health, forests, pine beetles and wildfires | Tagged: climate, drought, Environment, Forest health, Forest Service, forests, New Mexico, piñon-juniper forests | Leave a comment »