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You are here: Home / News & Events / Events / Can Landscape-scale Management Influence Insect Outbreak Dynamics

Can Landscape-scale Management Influence Insect Outbreak Dynamics

We hypothesized that landscape connectivity of host tree species increases forest susceptibility to insect pest damage. We evaluated this hypothesis for spruce budworm within a 6 million hectare “experimental” landscape at the international border between the Midwestern US and Canada, containing wilderness plus two contrasting harvest patterns (coarse vs. fine).
When May 21, 2013
from 01:00 PM EDT to 02:00 PM EDT
Where Webinar
Contact Name
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Dr. Brian Sturtevant, Research Ecologist, U.S. Forest Service Northern Research Station, will present results that suggest that a) past management created widely divergent landscape legacies, yet budworm host species patterns were only weakly related to these spatial legacies; b) spruce budworm disperse at a coarser scale than the fragmentation patterns created by land management; c) outbreak characteristics differed substantially across the differently managed landscapes.

Landscape composition, rather than pattern itself, appeared to contribute to the divergent outbreak responses.  This study is among the first to show that forest management can not only influence damage associated with defoliator outbreaks, but also the nature of the outbreaks themselves.

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Filed under: Models, Events