The Crystal Lake recreation area in Southern California will be temporarily closed to prevent the spread of a tree-colonizing beetle. Officials plan to spray pine trees with insecticide to protect them from the western pine beetles, which have already killed nearly 200 trees in the area. The closure aims to stop the beetles from spreading further.
Specimens of western pine beetles sealed in resin. Southern California pine trees were decimated in 2003 after several species of bark beetles exploded in population during four years of the worst recorded drought since records began in 1849.The Crystal Lake recreation area in the San Gabriel Mountains and Angeles National Forest will temporarily close Tuesday through Sunday to stop a tree-colonizing beetle from spreading.
He said the beetles typically have to kill a tree to reproduce, but they usually target weak trees damaged by drought or lightning. Most of the time they're in the background, and we don't really notice them.Paine said you can see several signs on an affected tree. One is called a pitch tube, which looks like a little dime-sized mountain with a hole in the center on the tree’s trunk.
"The tough part is that the tree stays green for a considerable amount of time," he said."So if you're standing 10 or 15 feet away from the tree and you look at it and you don't see any pitch tubes, that doesn't necessarily mean it's not under attack."But the challenge is keeping the beetle population down. He said once the population gets high enough, there's a very high risk of tree death, and not a whole lot can be done.
Crystal Lake Recreation Area Southern California Tree-Colonizing Beetle Pine Trees Western Pine Beetles Insecticide Closure Spread Drought
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