A 90-year sea warming trend explains outbreak patterns of western spruce budworm on Vancouver Island

被引:20
|
作者
Thomson, Alan J. [1 ]
Benton, Ross [1 ]
机构
[1] Pacific Forestry Ctr, Canadian Forest Serv, Nat Resources Canada, Victoria, BC V8Z 1M5, Canada
来源
FORESTRY CHRONICLE | 2007年 / 83卷 / 06期
关键词
climate change; phenology; bud flush; Douglas-fir;
D O I
10.5558/tfc83867-6
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
Three outbreaks of western spruce budworm were recorded on southern Vancouver Island between 1909 and 1930. After 1930, outbreaks were restricted to interior regions of British Columbia. We show that warming winter temperatures on southern Vancouver Island, related to warming sea temperature, promoted earlier larval emergence while the timing of bud flush has remained constant. This differential response to changed climate has resulted in a significant departure from optimal phenological synchronization that would explain the outbreak history.
引用
收藏
页码:867 / 869
页数:3
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