ForWarn II

Satellite-Based Change Recognition and Tracking

Insects

Gyspy Moth in George Washington National Forest, VA and Monongahela National Forest, WV

Tue, 08/04/2015 - 06:40 -- wchristie

ForWarn found a decline in greenness in the George Washington National Forest of Virginia and Monongahela National Forest of West Virginia in August 2015. Gypsy moth is a historical defoliator of these areas, their damage covering one million acres in 2015. The large decline by the gypsy moth may indicate the start of a population outbreak for the species.

Douglas-fir Tussock Moth East of Pikes Peak, CO

Fri, 07/31/2015 - 11:14 -- wchristie

ForWarn recognized a decline in vegetation greenness east of Pikes Peak and west of Colorado Springs, Colorado on July 31, 2015. The mixed conifer forest of this area is showing only a portion of the canopy species being affected, most substantially the Douglas fir. The Douglas-fir tussock moth is a likely candidate for the defoliation of firs in the area. At higher elevations, western spruce budworm affecting lodgepole pine, ponderosa pine, and mixed conifers at 9000 ft.

Pandora Moth defoliation returns to the Kaibab

Tue, 07/14/2015 - 14:45 -- stevenorman
Pandora Moths on the Kaibab National Forest

The Pandora Moth (Coloradia pandora) is a native defoliator of ponderosa, Jeffrey and lodgepole pine trees of the Western US. During most years, populations and defoliation is minor, but periodic outbreaks cause widespread defoliation (Speer and others 2001). The outbreak shown here in Arizona's Kaibab National Forest first caused significant defoliation in June-July of 2013 and defoliating caterpillars have now returned in 2015.

Snow Intensification and Insects in San Juan National Forest and Weminuche Wilderness, CO

Tue, 07/07/2015 - 07:21 -- wchristie

ForWarn detected departure of vegetation greenness in San Juan National Forest, Colorado including parts of the Weminuche Wilderness. Higher elevations below the treeline are noticing departure because of intensifying snow toward open canopies. It is also a possibility that western spruce budworm and spruce beetle are contributing to departure considering historical data on insect infestation in the area in July.

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