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Although the use of nonhost plants intercropped among host crops has been a standard agricultural practice for reducing insect herbivory for millennia, the use of nonhost signals to deter forest pests is much more recent, having been developed over the past several decades. Early…
Author(s): Dezene P.W. Huber, Christopher J. Fettig, John H. Borden
Keywords: bark beetles, nonhost volatiles, tree protection
Source: The Canadian Entomologist. 153(1): 19-35
Year: 2021
Snags (standing dead trees) are important components of forest ecosystems that, among other benefits, provide critical habitat for many species of wildlife, but also represent important safety concerns to firefighters, forest workers, and the public. We identified factors that influence the fall…
Author(s): Jackson P. Audley, Christopher J. Fettig, A. Steven Munson, Justin B. Runyon, Leif A. Mortenson, Brytten E. Steed, Kenneth E. Gibson, Carl L. Jørgensen, Stephen R. McKelvey, Joel D. McMillin, Jose F. Negrón
Keywords: Checking, Dendroctonus ponderosae, Disturbance, Forest structure, Pinus contorta, Salvage, Snag fall rates, Snag longevity, Tree mortality
Source: Forest Ecology and Management. 482: 118870
Year: 2021
Mean surface temperatures have increased globally by ~0.7 °C per century since 1900 and 0.16 °C per decade since 1970 (Levinson and Fettig 2014). Most of this warming is believed to result from increases in atmospheric concentrations of greenhouse gases produced by human activity. Temperature…
Author(s): Deborah M. Finch, Jack L. Butler, Justin B. Runyon, Christopher J. Fettig, Francis F. Kilkenny, Shibu Jose, Susan J. Frankel, Samuel A. Cushman, Richard C. Cobb, Jeffrey S. Dukes, Jeffrey A. Hicke, Sybill K. Amelon
Source: In: Poland, Therese M.; Patel-Weynand, Toral; Finch, Deborah M.; Ford Miniat, Chelcy; Hayes, Deborah C.; Lopez, Vanessa M., eds. Invasive Species in Forests and Rangelands of the United States: A Comprehensive Science Synthesis for the United States Forest Sector. Heidelberg, Germany: Springer International Publishing: 57 - 84. Chapter 4.
Year: 2021
The recent Californian hot drought (2012–2016) precipitated unprecedented ponderosa pine (Pinus ponderosa) mortality, largely attributable to the western pine beetle (Dendroctonus brevicomis; WPB). Broad-scale climate conditions can directly shape tree mortality patterns, but…
Author(s): Michael J. Koontz, Andrew M. Latimer, Leif A. Mortenson, Christopher J. Fettig, Malcolm P. North
Source: Nature Communications. 12(1): 129
Year: 2021
This paper is intended as an assessment of the state of knowledge and development of semiochemical methods for control of bark beetles (Coleoptera: Curculionidae) in western North America and as a roadmap for future research and development in this field. It is based on a keynote presentation given…
Author(s): Nancy E. Gillette, Christopher J. Fettig
Keywords: biopesticides, forest pest management
Source: The Canadian Entomologist. 153(1): 121-135
Year: 2021
Insects are essential components of forest ecosystems, representing most of the biological diversity and affecting virtually all ecological processes (Schowalter 1994). Most species are beneficial (Coulson and Witter 1984, Haack and Byler 1993), yet others periodically become so abundant that they…
Author(s): Chris Fettig, Joel McMillin, Jeanine Paschke, Frank J Sapio
Source: In: Barrett, Tara M.; Robertson, Guy C., Eds. Chapter 6: Insects. Gen. Tech. Rep. PNW-GTR-992. Portland, OR: USDA Forest Service, Pacific Northwest Research Station. P. 81-121
Year: 2021