气候变化领域集成服务门户(CCPortal): Reconstructing historical outbreaks of mountain pine beetle in lodgepole pine forests in the Colorado Front Range

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DOI	10.1016/j.foreco.2020.118270
	Reconstructing historical outbreaks of mountain pine beetle in lodgepole pine forests in the Colorado Front Range
	Negrón J.F.; Huckaby L.
发表日期	2020
ISSN	0378-1127
卷号	473
英文摘要	Regional-scale mountain pine beetle (Dendroctonus ponderosae) outbreaks in the first decade of the 2000s affected millions of hectares of lodgepole pine (Pinus contorta) in western North American forests. In Colorado, 1.4 million ha exhibited high mortality. These events prompted questions about whether historical outbreaks reached the scale of this most recent event. We aimed to reconstruct past mortality events in lodgepole pine forests in the northern Colorado Front Range and to determine whether these were of similar extent to the 2000s outbreak. We identified logs of mountain pine beetle-killed trees based on visually identifiable signs of beetle infestation including lower bole breakage, egg galleries, exit holes, and the presence of blue stain. We collected cross-sections, developed tree ring chronologies and determined death dates through tree ring analysis. We detected five mortality events since the 1860s, including widely distributed mortality in the 1910s that was geographically as extensive as the 2000s outbreak in our study area. Trees killed were on average 232 years of age and 36 cm in diameter. In our study area, it takes about 200 years for a lodgepole pine to reach the size suitable for mountain pine beetle attack. We conclude that mountain pine beetle infestation signs remain useful for identifying mountain pine beetle-caused tree mortality for over a century and that well-distributed mountain pine beetle-caused mortality has occurred in the past in the northern Colorado Front Range. Future reconstructions of bark beetle-caused mortality may benefit from integrating the use of beetle symptomatology with growth releases. The inclusion of stand demography and fire history will present a holistic picture of how disturbance interactions create the mosaic of forest landscapes. Awareness of the disturbance histories in forests and the legacies of past events advances understanding of their ecology and will inform researchers and managers in developing management strategies to foster sustainable delivery of ecosystem services and maintain resiliency as climate change manifests. © 2020
英文关键词	Bark beetles; Dendroctonus ponderosae; Disturbance ecology; Pinus contorta
语种	英语
scopus关键词	Climate change; Demography; Diagnosis; Ecosystems; Landforms; Colorado Front Range; Dendroctonus ponderosae; Disturbance history; Lodgepole pine forests; Management strategies; Mountain pine beetle; Sustainable delivery; Tree-ring chronologies; Forestry; beetle; coniferous forest; demography; environmental disturbance; fire history; mortality; parasite infestation; pest outbreak; reconstruction; tree ring; Colorado; Diagnosis; Ecosystems; Forestry; Mortality; Pinus Contorta; Pinus Mugo; Front Range; Coleoptera; Dendroctonus ponderosae; Pinus contorta; Pinus mugo; Scolytinae
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155166
作者单位	USDA Forest Service, Rocky Mountain Research Station, 240 West Prospect, Fort Collins, CO 80526, United States
推荐引用方式 GB/T 7714	Negrón J.F.,Huckaby L.. Reconstructing historical outbreaks of mountain pine beetle in lodgepole pine forests in the Colorado Front Range[J],2020,473.
APA	Negrón J.F.,&Huckaby L..(2020).Reconstructing historical outbreaks of mountain pine beetle in lodgepole pine forests in the Colorado Front Range.Forest Ecology and Management,473.
MLA	Negrón J.F.,et al."Reconstructing historical outbreaks of mountain pine beetle in lodgepole pine forests in the Colorado Front Range".Forest Ecology and Management 473(2020).