Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2019.02.011 |
Multiyear weather anomalies associated with range shifts by the mountain pine beetle preceding large epidemics | |
Sambaraju, Kishan R.1; Carroll, Allan L.2; Aukema, Brian H.3 | |
2019-04-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2019 |
卷号 | 438页码:86-95 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA |
英文摘要 | The recent range expansion of the mountain pine beetle, Dendroctonus ponderosae Hopk. (Coleoptera: Curculionidae), into evolutionarily native lodgepole and jack pine forests of northwestern Canada has triggered concern that continued eastward expansion through the boreal forest will threaten other pine species native to eastern North America. This unprecedented breach of a historic geoclimatic barrier was precipitated by a "hyperepidemic" west of the Rocky Mountains comprising the largest mountain pine beetle eruption in recorded history. We assessed climate-related latitudinal shifts of pre-outbreak populations of mountain pine beetle in western Canada over a 26-year period preceding the hyperepidemic, as movements of pre-outbreak populations determine, in part, the extent of subsequent outbreaks. We used digitized records of annual aerial overview surveys (1965-1979, 1986-1996) of tree-killing activity, comprising > 122,000 individual infestation polygons, and temperature and aridity data to associate trends in deviations of weather variables from historical averages with latitudinal shifts by the insect. Overall, we found that seasonal and multiyear weather phenomena such as anomalous temperature increases in a stable aridity regime, or vice-versa, and warmer-than-normal winter temperatures explained small but significant variation in northward annual range shifts after factoring out spatial and temporal variation. The numbers of discrete, tree-killing infestations increased rapidly during 1965-1979, and northward range shifts of 300 km in the early 1970s coincided with abnormally dry conditions. Mountain pine beetle populations advanced northward by 391 km from 1965 to 1996. Consistently high infestation levels of the mountain pine beetle occurred simultaneously with above-average temperatures that extended for nearly a decade immediately preceding the hyperepidemic. Climate-associated range shifts can provide gateways to rapid range expansions, and evoke concern with regard to future impacts of other bark beetle species inhabiting regions likely to experience multiyear droughts and/or temperature increases under climate change. |
英文关键词 | Dendroctonus ponderosae Hyperepidemic Lodgepole pine Latitude Temperature Drought Climate change |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000463120500011 |
WOS关键词 | DENDROCTONUS-PONDEROSAE COLEOPTERA ; WESTERN UNITED-STATES ; CLIMATE-CHANGE ; SPATIOTEMPORAL PATTERNS ; NATURAL DISTURBANCES ; BRITISH-COLUMBIA ; LODGEPOLE PINE ; BARK BEETLES ; WATER-STRESS ; EXPANSION |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182342 |
专题 | 气候变化 |
作者单位 | 1.Canadian Forest Serv, Nat Resources Canada, Laurentian Forestry Ctr, 1055 PEPS,Stn St Foy, Quebec City, PQ G1V 4C7, Canada; 2.Univ British Columbia, Dept Forest & Conservat Sci, Vancouver, BC V6T 1Z4, Canada; 3.Univ Minnesota, Dept Entomol, 432 Hodson Hall,1980 Folwell Ave, St Paul, MN 55118 USA |
推荐引用方式 GB/T 7714 | Sambaraju, Kishan R.,Carroll, Allan L.,Aukema, Brian H.. Multiyear weather anomalies associated with range shifts by the mountain pine beetle preceding large epidemics[J]. FOREST ECOLOGY AND MANAGEMENT,2019,438:86-95. |
APA | Sambaraju, Kishan R.,Carroll, Allan L.,&Aukema, Brian H..(2019).Multiyear weather anomalies associated with range shifts by the mountain pine beetle preceding large epidemics.FOREST ECOLOGY AND MANAGEMENT,438,86-95. |
MLA | Sambaraju, Kishan R.,et al."Multiyear weather anomalies associated with range shifts by the mountain pine beetle preceding large epidemics".FOREST ECOLOGY AND MANAGEMENT 438(2019):86-95. |
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