It's about forest collapse, but then you don't have to take my word for it. Here's the US Forest Service (dateline last month):
CHEYENNE — Wyoming’s bark beetle epidemic is showing signs of slowing, forestry officials say, for the rather depressing reason that the insects are running out of trees in the state to infest.
But the beetles literally aren’t out of the woods yet, according to forest experts. And the larger question may be how to deal with the huge expanses of dead trees they’ve already left behind.
The latest aerial survey by the U.S. Forest Service, released in January, shows an estimated 314,000 acres of Wyoming pine forest died from beetle infestation in 2010 — mostly from mountain pine beetles. That’s a fourth of tree mortality rates in Wyoming during both 2009 and 2008.
In all, about 3.1 million acres of trees in Wyoming — mainly lodgepole and ponderosa pine — have been infested since the outbreak was first noticed about 15 years ago. The worst-hit areas have been the Medicine Bow National Forest in southeast Wyoming, Black Hills National Forest in northeast Wyoming and the Shoshone and Bridger-Teton national forests in the western part of the state.
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http://trib.com/news/state-and-regional/article_3af28c3d-2bde-5da8-9718-257f586000c8.htmlThen there's fire behavior in beetle-killed timber and slash in Montana - i.e. ignition to 3 acres in two minutes - kind of a preview of summer, 2011:
The precise implications Montana's large number of beetle-infested forest acres have on wildfires are still being studied. But one thing is clear: Drastic changes in wildfire behavior have been reported by fire crews working in infested areas, FireSafe Montana's Everett "Sonny" Stiger said Tuesday.
Stiger presented his talk "Wildland Firefighter Safety and the Mountain Pine Beetle" during the International Association of Wildland Firefighters conference being held in Missoula this week. Stiger and his team have been gathering firefighter observations of blazes burning in stands killed by mountain pine beetles for several years. Crews have reported intense and quickly spreading fires that produce black smoke and tall flames.
One firefighter noted that it was "astounding" how fast fire in beetle-kill stands spreads. In one case, a fire burning in such a stand grew to three acres in two minutes and to more than 100 acres in the first hour.
Even fires in infested stands that haven't yet fallen into the "red-and-dead" stage are displaying these characteristics. Those "still green" stands have 50 percent less moisture than healthy forests, Stiger said. "We need to make (fire crews) well aware this kind of spread is possible," he said.
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http://missoulian.com/news/local/article_ebf497f0-6004-11e0-aac0-001cc4c002e0.htmlThen there's this story about current beetle outbreaks in Idaho and how climate ties into that:
Cathy Whitlock, professor of earth sciences at Montana State University, researches and collects sediment cores from lakebeds and analyzes the fossil pollen and charcoal in order to learn about past vegetation and frequency of fires. She has found evidence of past fires in core samples from a small lake in the Sawtooth Mountains, and these events are associated with periods of high fuel accumulation and drought. “Pine beetles are native to Idaho forests, and the remains of beetles in lakes suggest outbreaks in the past,” Whitlock said. “It happens. The forests survive and recover. I think what impresses people now is the scale of the current infestation. People want to know if the dead and dying trees will increase fire hazard or not, especially if the climate continues to warm.”
Hicke is currently conducting research on mountain pine beetle activity in the Sawtooth region, and said the recent outbreaks suggest there is a climate change influence. These aspects are related to epidemics at high elevations that affect whitebark pine and limber pine. He said these tree species have been attacked in the Stanley area in the past, for example in the 1930s, but this period was a time of warming and temperatures decreased, indicating that the conditions in the whitebark pine forest were too cold to support outbreaks.
“But now we’re seeing outbreaks with the warming conditions and we expect that the warming conditions are not going to switch to colder temperatures, but that they will continue on,” Hicke said. “So that’s pretty strong evidence for the impact of climate change at these high elevation sights.” The evidence for this relationship is solid, according to Hicke. “We do know, based on biological studies, that outbreaks are more likely in warmer conditions,” Hicke said. “This isn’t just correlation, there’s good evidence.”
However, the beetle’s dependence on temperature is more subtle than originally thought, according to James Powell, professor in the statistics, mathematics, and biology departments at Utah State University. Powell has been involved with mountain pine beetles through the USDA Rocky Mountain Research Station since 1994, when he used mathematical models to predict how infestations progress in a forest environment.
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http://www.uiargonaut.com/sections/news/stories/2011/april/4111/climate_change_in.htmlThen there's this guy from Montana who's lived there for 12 years who just cut down the last of his trees, since most of them were dead:
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When we bought the land, the stands of timber were so dense and unruly you couldn’t walk through parts of the property. I bought my first chainsaw, an orange beauty. I spent a lot of time thinning small trees, sawing up bigger ones for firewood, splitting and stacking the wood, and using it all to heat our house. We rarely used the propane furnace. Our masonry wood stove from Finland, a Tulikivi, has a mass of gray soapstone around the fire box that stores the warmth and radiates heat into the house for 24 hours, even in the coldest days of December.
And we were “fireproofing” our property, thinning trees around the house should a wildfire break out.
Four years ago, the beetles came. First a couple of our oldest pine trees turned red. Alarmed, we quickly cut them down and covered them with black plastic. It’s stomach-churning when the tree reaper comes to claim your forest. One day ivory-colored plugs that look like candle wax are plastered on the trunk, a sign the tree is pumping out resin to try to halt a drilling bug. Sometimes a tree wins by entombing a beetle; far more often the trees lose to the mob assault.
Then things went exponential. One dead tree turned to five and the next year five turned to 30, dying far faster than I could cut them down. Now the mortality count is in the hundreds, more than 95 percent of our forest, and many more in the national forest around us.
Last week we threw in the towel. A logging crew cut down all but a few of our trees, taking away our forest and leaving us a meadow. The trees, too damaged to be turned into lumber, were hauled off to a pulp plant, where they will be ground into an oatmeal-like slurry and turned into cardboard boxes. I won’t make money; in fact it will cost me some $700 an acre to get rid of them. And good riddance — the sooner they’re gone the better. Dead trees are a fire waiting to happen.
EDIT
http://www.nytimes.com/2009/07/02/garden/02tree.htmlOr you could try reading the article.
Have a
super day!