Posted on September 30, 2014 by Bob Berwyn
Dead and dying lodgepole pines in Frisco, Colorado.
Study shows no clear link between beetle-kill and ecological severity of western wildfires
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
Filed under: Environment, forest fires, Forest health, forests, pine beetles and wildfires | Tagged: fire intensity, forest fires, pine beetles, Wildfires | 2 Comments »
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 »
Posted on May 26, 2014 by Bob Berwyn
Beetle-killed trees near Frisco, Colorado.
State Forest Service warns against transporting firewood
FRISCO — It may be a little like the Dutch boy putting his finger in the leaky dike, but Colorado Forest Service officials are warning that transporting firewood from place to place may increase the spread of invasive tree-killing bugs.
Moving firewood even short distances increases the risk to Colorado’s native forests and urban trees. With the 2013 detection of the highly destructive emerald ash borer in the City of Boulder, and ongoing bark beetle epidemics in the state’s mountain forests, the Colorado State Forest Service wants to be sure people are aware of the risks associated with moving firewood. Continue reading
Filed under: Colorado, Environment, Forest health, forests, pine beetles and wildfires | Tagged: Colorado, emerald ash borer, firewood, forests, insects, trees | 1 Comment »
Posted on February 5, 2014 by Bob Berwyn
Pine beetle infestation slows, but spruce beetles continue to spread
By Summit Voice
FRISCO — There’s good news and bad news for Colorado forests, according to state and federal officials, who said last week that the mountain pine beetle epidemic slowed dramatically in 2013, while spruce beetles continued to spread.
Statewide, mountain pine beetles were active on 97,000 acres in 2013, the lowest acreage of active infestation in 15 years. Since 1996, mountain pine beetles have killed trees across 3.4 million acres.
Spruce beetle were active on 398,000 acres, expanding by 216,000 new acres in 2013, compared to 183,000 new acres in 2012. The total area affected by this beetle since 1996 has reached more than 1.1 million acres. Continue reading
Filed under: Colorado, Environment, Forest health, forests, pine beetles, pine beetles and wildfires, US Forest Service | Tagged: Colorado, Colorado news, Environment, forests, spruce beetles | 1 Comment »
Posted on January 10, 2014 by Bob Berwyn
Heavy machinery is on the move in the quest to restore Colorado’s forests.
Applications due March 13
FRISCO — Neighborhoods looking to reduce wildfire threats can now apply for grants under a state program that will disburse a total of $5.2 million for projects that reduce the risk for damage to property, infrastructure, and water supplies, and those that limit the likelihood of wildfires spreading into populated areas.
The grant program, administered by the Colorado Department of Natural Resources, is accepting applications through March 13. The grants will be awarded in early May. Information and applications are online at the DNR website. Continue reading
Filed under: Colorado, Environment, forest fires, Forest health, forests, pine beetles and wildfires | Tagged: Colorado, Colorado Department of Natural Resources, forests, wildfire mitigation, Wildfires | Leave a comment »
Posted on December 28, 2013 by Bob Berwyn
Lodgepole pines killed by beetles stand silhoutted against the evening sky in Summit County, Colorado.
Smooth-barked trees better able to repel insects
By Summit Voice
FRISCO — Lodgepole and ponderosa pines with smoother bark may be better at repelling tree-killing bugs, according to Boulder-based researchers with the University of Colorado.
The new findings may help forest managers as they plan logging projects, especially in areas where there is a need to protect high-value trees — in developed recreation areas or on private property.
The study was published online in the journal Functional Ecology. While the current pine beetle epidemic has slowed dramatically in many areas, it wiped out millions of trees across 3.4 million acres since 1996. Continue reading
Filed under: Environment, Forest health, forests, pine beetles and wildfires | Tagged: CU Boulder, Environment, Forest health, forests, mountain pine beetles | Leave a comment »
Posted on December 2, 2013 by Bob Berwyn
Plenty of healthy grasses, forbs and shrubs, along with young lodgepole pines two to three feet tall in this unlogged patch of beetle-killed pines.
Shrub removal also key to moderating fire behavior
By Summit Voice
FRISCO — Forest Service scientists say they’ve quantified the relationship between the density of ponderosa pine stands and disease.
The study shows that — no surprise — increased density, mainly due to the agency’s long-term fire suppression policies, makes the trees more susceptible to bark beetles and diseases. Competition for soil moisture, nutrients, and sunlight in dense stands weakens trees and therefore also contributes to fuel buildup. Continue reading
Filed under: Colorado, Environment, forest fires, Forest health, forests, pine beetles and wildfires | Tagged: Bark beetle, Forest health, logging, Ponderosa pines, United States Forest Service | Leave a comment »