ForWarn II

Satellite-Based Change Recognition and Tracking


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.

Gypsy Moth Defoliation in Morris and Passaic Counties, NJ

Thu, 06/25/2015 - 14:08 -- wchristie

ForWarn identified a decline anomaly in the Morris and Passaic Counties of New Jersey. Gypsy moth is historically active in the area during the time of reporting, June 2015. Defoliation in the area of concern is consistent with defoliation of the previous year. Based on past data, decline in vegetation greenness could potentially intensify.

Pandora Moth Outbreak in Kaibab National Forest, AZ

Mon, 06/22/2015 - 12:17 -- wchristie

ForWarn identified an anomaly in the Kaibab National Forest of Arizona near the Jacob's Lake area. Defoliation is actively growing and shifting between hosts, timing, and species. This is because of a reduction in vulnerable host species, parasites and pathogens that decline populations of defoliator species, and subtle differences in environmental conditions across years and places. It is probably that the pandora moth is the cause of the decline in the area by defoliating ponderosa pines.


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