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Highlight IDTitleStrategic Program Area(s)YearStation
Photo of Spotted wing drosophila inside a microfuge tube with a thermocouple in preparation for cold tolerance testing. Amanda Stephens, University of Minnesota and U.S. Department of Agriculture Forest Service.
ID: 1165
"Stressing Out" about New Invasive Insects

Some highly damaging invasive insects depend on forests to survive the winter. Forest Service scientists studied the effects of cold stress on t ...

Principal Investigator : Robert C. Venette

Invasive Species2016NRS
Photo of Larvae of emerald ash borer on an ash tree from which the bark had been peeled in April 2014. The larvae are dead (dark brown instead of cream), killed during the winter of 2013-14. Robert C. Venette, USDA Forest Service
ID: 645
Cold Winter Temperatures Set Emerald Ash Borer Back in Minnesota

Emerald ash borer is the most devastating nonnative insect pest of trees in the United States. Overwintering larvae are unable to survive the w ...

Principal Investigator : Robert C. Venette

Invasive Species2014NRS
Photo of NRS-2017-87
ID: 1259
Mountain pine beetle: A real threat to pines of eastern North America

The mountain pine beetle, an insect native to western states, has devastated pines in western North America and is spreading east through the Ca ...

Principal Investigator : Robert C. Venette

Invasive Species2017NRS
Photo of Three pest risk maps for Phytophthora ramorum, the causal agent of sudden oak death, produced using (a) CLIMEX software; (b) NAPPFAST software; and (c) an expert-driven rule set. Forest Service
ID: 201
Risk-Mapping Invasive Species

Pest risk maps are vital tools to describe where exotic invasive species might arrive, establish, spread, or have unacceptable effects. They are ...

Principal Investigator : Robert C. Venette

Invasive Species2010NRS