Continuing my journey within the Rocky Mountains, I quickly noticed that most of the trees were dead…Either the trees were completely bare with no green branches with no signs of life whatsoever or there were just bare spots with piles of lumber compiling on the mountain. My immediate thought? Forest fires. However, I learned that this massive tree loss was not caused by fires but in fact insects. Pine Beetles to be more exact.
Pine Beetles are the pests that currently occupy Colorado’s pine forests. They are infamous for killing large numbers of trees annually during outbeaks. They usually target trees that are not growing vigorously due to old age, crowding, poor growing conditions, drought, fire, root disease, and other causes. Once these beetles infests a tree, nothing practical can be done to save that particular tree. And once a beetle attacks one tree, it simply moves on to another…and another…until all the trees around it are savaged and dead. 
Unfortunately, the past couple years have been worse for the Colorado trees. The number of Colorado pines killed by the beetles has jumped to nearly five times more than it did before. Approximately 4.8 million trees have been killed this year. Also, the acreage the beetles have been covering has doubled, jumping up about 50% from 644,840 to 430,526 last year. Unfortunately, the beetles are not slowing down. Colorado has about 1.5 million acres of lodgepole pines, and as of right now, 43% is infested.
So what can we do to stop these beetles?
According to some, a weeklong streak of bitterly cold weather could possibly end the beetle infestation (Temperatures below 30 degrees below zero minimum). Also, another method of prevention includes forest management. Managing the forest by creating “diversity in age and structure” could result in a healthy forest less vulnerable to the beetles. Also, certain sprays of carbaryl, permethrin, and bifenthrin can be applied to individual trees to help the infestation .
However, problems with these solution include environmental conditions such as rain that could wipe away the pesticide, the cost of the chemicals, the chemical storage space, and the location of the invasion. The areas in which the beetles are invading such as Cooper Mountain, Vail, and Aspen typically do not reach temperatures below 20 degrees for a week straight.
Unfortunately, these beetles can not be stopped unless they run out of trees. A new epidemic is rising and our mountain forests will be changed before we know it. Millions of trees have been lost already.
Sources:
www.ext.colostate.edu/pubs/insect/05528.html
www.rockymountainnews.com/drmn/local/article/0,1299,DRMN_15_5176428,00.html
APimages.com