Then their offspring — spruce beetle larvae — feed on the tree’s phloem tissue, the sometimes green, sappy layer just below that bark. It’s also the layer that takes nutrients around the tree.

Over the past nearly two decades, the spruce beetle tore through more than 120,000 acres of the Weminuche Wilderness, which at 488,210 acres, is Colorado’s largest designated wilderness area.

DENVER (KDVR) — For the ninth consecutive year, the spruce beetle remains the most damaging forest pest in Colorado. To the Colorado State Forest Service (CSFS), this isn’t a huge surprise.

Forested regions of the study area consist of mixed stands of spruce and birch. The region has been heavily affected by a beetle infestation that began in the mid-2010s.

The spruce beetle, which has significantly damaged the Rio Grande National Forest, is rapidly making inroads into the San Juan National Forest. The U.S. Forest Service held a meeting this w ...

Sep 19, 2021 Sep 19, 2021 Updated Oct 24, 2022 An epidemic is creeping into Interior Alaska, but it is not attacking people. It is killing forests filled with mature white spruce trees. The ...

The spruce beetle outbreak was active on 398,000 acres across the state, expanding by 216,000 new acres in 2013, compared with 183,000 new acres in 2012.

Spruce beetle still most damaging forest pest in state, aerial work shows By DENNIS WEBB Dennis.Webb@gjsentinel.com Feb 18, 2021 Updated Mar 25, 2022 ...

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Symbiotic fungi transform terpenes from spruce resin into attractants for bark beetles When metabolizing spruce bark, the insect's fungal partners release volatile compounds that bark beetles ...

(CBS4) - The spruce beetle is still the most damaging forest pest in Colorado for the ninth consecutive year. This is based on a 2020 aerial detection survey led by forest managers. (credit: CBS) ...

"New way to spot beetle-killed spruce can help forest, wildfire managers." ScienceDaily. ScienceDaily, 12 June 2024. <www.sciencedaily.com / releases / 2024 / 06 / 240613001359.htm>.