DOI: 10.1016/j.foreco.2015.08.017
Scopus记录号: 2-s2.0-84939800502
论文题名: Reduced growth sensitivity to climate in bark-beetle infested Aleppo pines: Connecting climatic and biotic drivers of forest dieback
作者: Sangüesa-Barreda G. ; Linares J.C. ; Camarero J.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 357 起始页码: 126
结束页码: 137
语种: 英语
英文关键词: Bark beetles
; Carbon isotopes
; Dendroecology
; Drought stress
; Pinus halepensis
Scopus关键词: Drought
; Isotopes
; Resins
; Bark beetle
; Carbon isotopes
; Dendroecology
; Drought stress
; Pinus halepensis
; Forestry
; beetle
; biological production
; carbon isotope
; climate change
; climate conditions
; coniferous tree
; dendroecology
; dieback
; drought stress
; growing season
; growth response
; mortality
; population decline
; water use efficiency
; Bark
; Carbon
; Drought
; Insects
; Isotopes
; Pinus Halepensis
; Aleppo
; Halab
; Syrian Arab Republic
; Coleoptera
; Orthotomicus erosus
; Pinus halepensis
; Scolytinae
; Tomicus piniperda
英文摘要: Drought and bark-beetle infestation are major and often interconnected drivers of forest dieback and tree death. These two stressors may interact and accelerate forest mortality, since warmer and drier conditions boost beetle attacks and reduce tree growth. However, the way in which drought and bark-beetle infestation interact and affect declining or dying trees is still poorly understood. To disentangle the long-term interaction between the two stressors, we quantified radial growth (basal area increment), resin production, mortality and intrinsic water-use efficiency (iWUE) inferred from wood-carbon isotope discrimination. We compared trees infested and recently killed by two abundant bark beetle species (. Orthotomicus erosus and Tomicus piniperda) with non-infested living trees in a drought-prone Aleppo pine plantation. Growth and iWUE showed similar values in infested and non-infested trees. Since bark-beetle-infested trees did not grow less than non-infested trees, our results did not support the hypothesis of higher costs of resin production at the expense of stem-wood formation. Radial growth was enhanced by cool and wet winter conditions prior to the growing season. However, infested trees showed lower growth responsiveness than did non-infested trees with respect to this climatic driver of growth. Infested trees also showed a lower resin-duct production two years prior to death than non-infested trees. The growth responsiveness to climate should be characterized in bark-beetle-infested trees, since a weak correlation between climate and growth can be regarded as a predisposing factor of infestation-induced tree death. Such reduced responsiveness to climate stress could be linked to the tree vulnerability to beetle attacks in drought-prone forests. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65272
Appears in Collections: 影响、适应和脆弱性
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作者单位: Instituto Pirenaico de Ecología (IPE-CSIC), Avda. Montañana 1005, Apdo. 202, Zaragoza, Spain; Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, Ctra. Utrera km. 1, Sevilla, Spain
Recommended Citation:
Sangüesa-Barreda G.,Linares J.C.,Camarero J.J.. Reduced growth sensitivity to climate in bark-beetle infested Aleppo pines: Connecting climatic and biotic drivers of forest dieback[J]. Forest Ecology and Management,2015-01-01,357