Skip to Main Content
Stand-level factors associated with resurging mortality from eastern larch beetle (Dendroctonus simplex LeConte)Author(s): Susan J. Crocker; Greg C. Liknes; Fraser R. McKee; Jana S. Albers; Brian H. Aukema
Source: Forest Ecology and Management. 375: 27-34.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
Download Publication (1.0 MB)
DescriptionThe current outbreak of eastern larch beetle (Dendroctonus simplex LeConte) in Minnesota, USA, ongoing since 2000, has been characterized with a severity and duration unprecedented in previous outbreaks within the state. This study investigates the relationship between tamarack mortality due to eastern larch beetle and extant stand and site characteristics. Observations of tree attribute information and site condition collected over the course of the outbreak from nearly 15,000 tamarack trees in three different ecological regions of Minnesota were modeled using linear regression. Increasing tree diameter was the best indicator of tamarack mortality within the northern limits of the state's tamarack range and during the later portion of the outbreak. Tamarack density was negatively related to tree mortality in the northcentral region during the later outbreak, while the density of co-located non-host gymnosperms was positively related to tree mortality in areas of marginal host distribution. A temporal change in the importance of predictor variables suggests that the influence of tree and site characteristics evolved as the outbreak progressed and subsequent mortality increased. A greater understanding of the factors associated with tamarack mortality and how the those factors change over time and space will help to inform management practices and mitigate the impacts of this bark beetle on the tamarack resource in Minnesota.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationCrocker, Susan J.; Liknes, Greg C.; McKee, Fraser R.; Albers, Jana S.; Aukema, Brian H. 2016. Stand-level factors associated with resurging mortality from eastern larch beetle (Dendroctonus simplex LeConte). Forest Ecology and Management. 375: 27-34.
KeywordsDendroctonus simplex, Eastern larch beetle, Larix laricina, Eastern larch, Tamarack, Forest inventory
- Connecting overwintering success of eastern larch beetle to health of tamarack. Chapter 16
- The eastern larch beetle in Alaska.
- Biology and behavior of a larch bud moth, Zeiraphera sp., in Alaska.
XML: View XML