DOI: 10.1016/j.foreco.2013.09.051
Scopus记录号: 2-s2.0-84888133876
论文题名: Climate, weather, and recent mountain pine beetle outbreaks in the western United States
作者: Creeden E.P. ; Hicke J.A. ; Buotte P.C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 312 起始页码: 239
结束页码: 251
语种: 英语
英文关键词: Adaptive seasonality
; Climate suitability modeling
; Cold-induced mortality
; Drought stress
; Lodgepole pine (Pinus contorta)
; Mountain pine beetle (Dendroctonus ponderosae)
Scopus关键词: Climate suitability
; Cold-induced mortality
; Dendroctonus ponderosae
; Drought stress
; Pinus contorta
; Seasonality
; Climate change
; Drought
; Forestry
; adaptation
; beetle
; climate conditions
; coniferous forest
; drought stress
; mortality
; overwintering
; pest outbreak
; population dynamics
; seasonality
; Drought
; Forestry
; Pinus Contorta
; Pinus Mugo
; United States
; Coleoptera
; Dendroctonus ponderosae
; Pinus contorta
; Pinus mugo
英文摘要: Recent outbreaks of mountain pine beetle ( Dendroctonus ponderosae) have impacted large areas of western North America. Climate and weather conditions influence beetle population dynamics, and managers and policymakers are concerned about the potential effects of climate change on outbreaks. Here we studied five locations with extensive outbreaks in lodgepole pine ( Pinus contorta) forests across the western United States. Using observations and modeling, we quantified means and changes relative to prior years of three climate or weather factors associated with outbreaks: (1) year-round temperatures that affect adaptive seasonality; (2) low temperatures that induce mortality of overwintering beetles; and (3) drought stress of host trees. Climate variable means varied among locations, indicating the beetle's tolerance to different climate during outbreaks. Analyses of climate or weather factors as outbreaks progressed revealed that year-round temperatures during outbreaks were typically higher than in prior years, and outbreak years lacked very low winter temperatures that often occurred in prior years. Drought was present at each location during some time of an outbreak, and increases in beetle-caused tree mortality at lower beetle population levels (as indicated by killed trees) were usually coincident with drought. Furthermore, drought was not required to maintain large outbreaks; in several locations, relief from drought during periods of high tree mortality did not cause subsequent declines in tree mortality. We did not find strong evidence that maladaptive seasonality, cold-induced mortality, or drought stress was responsible for decreases in tree mortality, suggesting the role of host depletion. Large variability in the relationships between climate or weather variables and outbreaks suggests that different climate and weather factors may have been limiting outbreaks at different times and that these factors did not influence beetle-caused tree mortality similarly among locations. Our results increase understanding of the climate and weather factors that influence beetle outbreaks and their variability in space and time and will lead to more accurate predictions of future patterns of outbreaks that consider future climate. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66209
Appears in Collections: 影响、适应和脆弱性
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作者单位: University of Idaho, Department of Geography, 810 W 7th Street, McClure Hall 203, Moscow, ID 83844-3021, United States
Recommended Citation:
Creeden E.P.,Hicke J.A.,Buotte P.C.. Climate, weather, and recent mountain pine beetle outbreaks in the western United States[J]. Forest Ecology and Management,2014-01-01,312