DOI: 10.1016/j.foreco.2016.05.016
Scopus记录号: 2-s2.0-84968903140
论文题名: Stand-level factors associated with resurging mortality from eastern larch beetle (Dendroctonus simplex LeConte)
作者: Crocker S.J. ; Liknes G.C. ; McKee F.R. ; Albers J.S. ; Aukema B.H.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 375 起始页码: 27
结束页码: 34
语种: 英语
英文关键词: Dendroctonus simplex
; Eastern larch
; Eastern larch beetle
; Forest inventory
; Larix laricina
; Tamarack
Scopus关键词: Ecology
; Dendroctonus
; Eastern larch
; Eastern larch beetle
; Forest inventory
; Larix laricina
; Tamarack
; Forestry
; beetle
; coniferous tree
; diameter
; forest inventory
; forest management
; forest resource
; mortality
; pest outbreak
; population density
; Minnesota
; United States
; Dendroctonus simplex
; Gymnospermae
; Larix laricina
; Scolytinae
英文摘要: The 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 north-central 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. © 2016. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64843
Appears in Collections: 影响、适应和脆弱性
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作者单位: USDA Forest Service, Northern Research Station, Forest Inventory and Analysis, 1992 Folwell Avenue, St. Paul, MN, United States; Department of Entomology, University of Minnesota, 1980 Folwell Ave, St. Paul, MN, United States; Division of Forestry, Minnesota Department of Natural Resources, 1201 E. Hwy. #2, Grand Rapids, MN, United States; Ministry of Agriculture and Forestry, Government of Alberta, P.O. Box 450, 9503, Beaverhill Road, Provincial Building, Lac La Biche, AB, Canada
Recommended Citation:
Crocker S.J.,Liknes G.C.,McKee F.R.,et al. Stand-level factors associated with resurging mortality from eastern larch beetle (Dendroctonus simplex LeConte)[J]. Forest Ecology and Management,2016-01-01,375