气候变化领域集成服务门户(CCPortal): Distribution of endemic bark beetle attacks and their physiological consequences on Pinus halepensis

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DOI	10.1016/j.foreco.2020.118187
	Distribution of endemic bark beetle attacks and their physiological consequences on Pinus halepensis
	Davi H.; Durand-Gillmann M.; Damesin C.; Delzon S.; Petit C.; Rozenberg P.; Sabatier S.-A.; Chadœuf J.; Boutte B.; Boivin T.
发表日期	2020
ISSN	0378-1127
卷号	469
英文摘要	One factor that determines a tree's resilience capacity to drought is its level of interaction with aggravating biotic factors, such as bark beetles, which in turn depends on whether insect populations are at an endemic or epidemic stage. In a Mediterranean natural forest ecosystem, we investigated the ecophysiological characteristics of trees which (i) predispose Pinus halepensis to attacks of endemic populations of bark beetles (Tomicus destruens) and (ii) that arise as a result of these attacks. The annual life cycle of Tomicus destruens features an initial dispersal phase of sexually mature adults towards pine trunks for the purposes of brood production, and a second dispersal phase of callow adults from trunks to pine shoots for sexual maturation. During a three-year survey of endemic bark beetle attacks in a stand of 178 trees, we found that trees targeted for trunk attacks showed a more aggregated distribution pattern than those targeted for shoot attacks. Moreover, shoot-attacked trees were clearly larger and taller, had lower wood density, and were less exposed to competition than non-attacked trees. No differences were found between the characteristics of trunk-attacked trees and non-attacked ones. We found crown defoliation, lower primary growth and alteration of trunk non-structural carbon in phloem in the year following trunk attacks, although this did not affect vulnerability to cavitation of the vascular system, secondary growth, wood density, and xylem starch. Conversely, the health status and physiological variables of the shoot-attacked trees were not altered, which may be explained by their initial vigor. We conclude that the distribution of Tomicus destruens attacks at the plot level was independent of the ecophysiological traits of the host trees. It was mainly determined by the dispersal strategy of the endemic bark beetle population especially during brood production as only trunk attacks significantly weakened the trees. © 2020 Elsevier B.V.
关键词	Cardiovascular system Ecosystems Hardwoods Life cycle Bark beetle attacks Crown defoliation Distribution patterns Eco-physiological characteristics Insect population Natural forest ecosystems Sexual maturation Tomicus destruens Forestry beetle ecophysiology ecosystem resilience epidemic forest ecosystem life cycle physiological response pine sexual behavior vulnerability Bark Ecosystems Forestry Hardwoods Life Cycle Pinus Trees Wood Density Hexapoda Pinus halepensis Scolytinae Tomicus destruens
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132782
推荐引用方式 GB/T 7714	Davi H.,Durand-Gillmann M.,Damesin C.,et al. Distribution of endemic bark beetle attacks and their physiological consequences on Pinus halepensis[J]. Forest Ecology and Management,2020,469.
APA	Davi H..,Durand-Gillmann M..,Damesin C..,Delzon S..,Petit C..,...&Boivin T..(2020).Distribution of endemic bark beetle attacks and their physiological consequences on Pinus halepensis.,469.
MLA	Davi H.,et al."Distribution of endemic bark beetle attacks and their physiological consequences on Pinus halepensis".469(2020).