Bibliographical noteFunding Information:
We extend our gratitude to Kurt Allen of the USDA Forest Service (Rapid City, SD, USA), Angie Ambourn of the Minnesota Department of Agriculture (St. Paul, MN, USA), and Val Cervenka of the Minnesota Department of Natural Resources (St. Paul, MN) for logistical support. Research space was provided by the Wheaton College Science Station. Undergraduate researchers Niklas Iverson, Micah Edelblut, and James-Scott Lock contributed to data collection. This research was supported by the Legislative and Citizen's Commission on Minnesota's Resources (award 2014-04-e2) and a University of Minnesota Graduate Fellowship to DWR. Three anonymous reviewers provided helpful comments on a previous draft.
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- bark beetle
- pars stridens
- stress chirp