气候变化领域集成服务门户(CCPortal): Novel dendrochronological modelling demonstrates that decades of reduced stem growth predispose trees to Acute Oak Decline

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DOI	10.1016/j.foreco.2020.118441
	Novel dendrochronological modelling demonstrates that decades of reduced stem growth predispose trees to Acute Oak Decline
	Reed K.; Forster J.; Denman S.; Brown N.; Leather S.R.; Inward D.J.G.
发表日期	2020
ISSN	0378-1127
卷号	476
英文摘要	Acute Oak Decline (AOD) is devastating thousands of native oaks, Quercus robur and Q. petraea, in the UK and continental Europe. The syndrome is principally caused by multiple, interacting bacterial species that degrade inner bark tissues. The level of host predisposition required prior to AOD infection is unknown. The two spotted oak buprestid Agrilus biguttatus is strongly associated with AOD, although its role remains unclear. To investigate the nature of predisposition in AOD, to explore the role of the beetle in the syndrome, and to examine growth trends after AOD onset, the stem growth of 243 trees with a range of severity of AOD symptoms was analysed at five sites in England. Novel mixed effects dendrochronological modelling methods were developed. The presence/absence of A. biguttatus exit holes in the trees was not specifically linked with reduced stem growth, nor was there evidence of further reductions in growth after the onset of AOD symptoms. Instead, trees with long-term AOD symptoms show significantly reduced growth compared to asymptomatic trees from as far back as the 1930s, following a period of widespread decline in English Oaks. These results suggest that a cohort of oak trees across Britain was permanently damaged in the 1930s and predisposed to develop AOD symptoms decades later. Additionally, correlations with climatic variables suggest that diseased trees are less able to take advantage of good growing conditions in the spring and autumn. This study sheds light on how historical episodes of stress may impact the future resilience of oaks to disturbance, and supports the use of dendrochronological modelling as a technique to study the underlying health status of oak tree populations, and to better understand tree decline episodes. © 2020
英文关键词	Acute Oak Decline; Agrilus biguttatus; Dendrochronology; Ecological modelling; Predisposition; Quercus robur
语种	英语
scopus关键词	Population statistics; Bacterial species; Climatic variables; Growing conditions; Health status; Mixed effects; Modelling method; Presence/absence; Quercus robur; Forestry; bark; beetle; cohort analysis; dendrochronology; ecosystem resilience; growth response; health status; host plant; pest damage; population density; symptom; England; English; Forestry; Growth; Quercus Robur; Stresses; Trees; England; United Kingdom; Agrilus biguttatus; Bacteria (microorganisms); Buprestidae; Coleoptera; Quercus; Quercus robur
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/154992
作者单位	Forest Research, Centre for Ecosystems, Society and Biosecurity, Alice Holt Lodge, Farnham, Surrey GU10 4LHEngland, United Kingdom; Woodland Heritage, P.O. Box 1331, Cheltenham, Gloucestershire GL50 9AP, United Kingdom; Crop and Environment Sciences, Harper Adams University, Edgmond, Newport, Shropshire, England TF10 8NB, United Kingdom
推荐引用方式 GB/T 7714	Reed K.,Forster J.,Denman S.,et al. Novel dendrochronological modelling demonstrates that decades of reduced stem growth predispose trees to Acute Oak Decline[J],2020,476.
APA	Reed K.,Forster J.,Denman S.,Brown N.,Leather S.R.,&Inward D.J.G..(2020).Novel dendrochronological modelling demonstrates that decades of reduced stem growth predispose trees to Acute Oak Decline.Forest Ecology and Management,476.
MLA	Reed K.,et al."Novel dendrochronological modelling demonstrates that decades of reduced stem growth predispose trees to Acute Oak Decline".Forest Ecology and Management 476(2020).