GSTDTAP  > 气候变化
DOI10.1016/j.foreco.2019.06.018
Long-term impact of a major ice storm on tree mortality in an old-growth forest
Deschenes, Elise1; Brice, Marie-Helene2,3; Brisson, Jacques1,2
2019-09-15
发表期刊FOREST ECOLOGY AND MANAGEMENT
ISSN0378-1127
EISSN1872-7042
出版年2019
卷号448页码:386-394
文章类型Article
语种英语
国家Canada
英文摘要

In January 1998, eastern North America experienced the worst ice storm ever recorded, which resulted in major damage to forests throughout the region. However, we know little about the long-term effects of such a severe weather event, or how its potential interaction with other biotic factors impacted tree mortality. In this study, we investigated the long-term influence of the 1998 ice storm on tree mortality in Boise-des-Muir ecological reserve, an old-growth forest in southern Quebec (Canada). Mortality rates for four out of the five tree species studied showed a striking increase a few years after the ice storm, between 2000 and 2004. After this peak, tree mortality rates remained higher than before 1998. These results indicate a lagged and persistent effect of the ice storm on tree mortality and suggest that the tree community of Boise-des-Muir was more severely impacted than previously reported. Tree species were differentially damaged by the ice storm, and more than 25% of all tree species lost more than half their crown. Using a Cox proportional hazard model, we evaluated the impact of different levels of initial canopy damage from the ice storm on long-term tree mortality while taking into account other important biotic factors, such as tree size, tree density, indices of species-specific competition, and the presence of the beech scale insect. Species differed in their response to the storm, suggesting fundamental differences in sensitivity to extreme weather events. In particular, eastern hop-hornbeam (Ostrya virginiana) and American beech (Fagus grandifolia) were the species most vulnerable to the ice storm, and severe canopy loss led to a large increase in mortality risk. These findings suggest that the difference in tree survival following a natural disturbance likely depends not only on the severity of the damage itself, but also on species-specific ability to repair injuries and maintain physiological processes. We also found that tree size and species-specific competition influenced tree mortality significantly but did not interact with level of canopy loss. Consequently, multiple biotic factors remain important to explain mortality even after a major disturbance and should be considered when evaluating tree mortality. Our results show that the impact of the ice storm on tree mortality was species-specific, lagged and persisted for several years after the disturbance, potentially resulting in long-term compositional changes in the forest. This underscores the necessity of conducting long-term monitoring studies to understand the complete impacts of ice storms and other extreme climatic events on forests.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000486553900036
WOS关键词BEECH BARK DISEASE ; SOUTHERN QUEBEC ; SPECIES COMPOSITION ; DYNAMICS ; DAMAGE
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/187077
专题气候变化
作者单位1.Inst Rech Biol Vegetale, 4101 Sherbrooke St E, Montreal, PQ H1X 2B2, Canada;
2.Univ Montreal, Dept Sci Biol, Montreal, PQ, Canada;
3.McGill Univ, Ctr Sci Biodiversite Quebec, Montreal, PQ, Canada
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GB/T 7714
Deschenes, Elise,Brice, Marie-Helene,Brisson, Jacques. Long-term impact of a major ice storm on tree mortality in an old-growth forest[J]. FOREST ECOLOGY AND MANAGEMENT,2019,448:386-394.
APA Deschenes, Elise,Brice, Marie-Helene,&Brisson, Jacques.(2019).Long-term impact of a major ice storm on tree mortality in an old-growth forest.FOREST ECOLOGY AND MANAGEMENT,448,386-394.
MLA Deschenes, Elise,et al."Long-term impact of a major ice storm on tree mortality in an old-growth forest".FOREST ECOLOGY AND MANAGEMENT 448(2019):386-394.
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