DOI: 10.1016/j.foreco.2016.08.011
Scopus记录号: 2-s2.0-84983503858
论文题名: Pathogen-induced defoliation of Pinus sylvestris leads to tree decline and death from secondary biotic factors
作者: Oliva J. ; Stenlid J. ; Grönkvist-Wichmann L. ; Wahlström K. ; Jonsson M. ; Drobyshev I. ; Stenström E.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 379 起始页码: 273
结束页码: 280
语种: 英语
英文关键词: Gremmeniella
; Insect pest
; Necrotroph
; Prediposition
; Tomicus piniperda
; Tree disease
; Tree mortality
Scopus关键词: Pathogens
; Gremmeniella
; Insect pest
; Necrotroph
; Prediposition
; Tomicus piniperda
; Tree mortality
; Forestry
; beetle
; biotic factor
; coniferous tree
; crop damage
; defoliation
; disease incidence
; fungus
; mortality
; pathogen
; pest outbreak
; pest species
; population decline
; survival
; Ascocalyx abietina
; Gremmeniella
; Hexapoda
; Pinus sylvestris
; Scolytinae
; Tomicus piniperda
英文摘要: The contribution of non-lethal pathogenic attacks to tree death is still unclear. Manion's theory of the spiral of decline predicts that tree decline and death occurs because of a sequence of predisposing, inciting and contributing events. To understand whether pathogens can act as predisposing or inciting factors, we tested whether a sequence of non-lethal pathogen attacks causing crown defoliation could lead to a chronic decline in tree health and predispose trees to die. Scots pine (Pinus sylvestris) trees predisposed or escaping (non-predisposed) a first outbreak by the pathogen Gremmeniella abietina (predisposing event) were compared in terms of survival and susceptibility to secondary pests (contributing event) after a second G. abietina outbreak (inciting event). Four years after the inciting event, mortality among predisposed trees was up to five times higher than among trees escaping the first epidemic. Predisposed trees were twice as susceptible to secondary attacks by the common pine shoot beetle (Tomicus piniperda). Ten years after the inciting event, severely predisposed trees had not been able to restore their crowns and still showed stagnated growth. This study showed that pathogen-induced defoliation can act as predisposing and inciting factors for tree death, reducing the capacity of trees to survive short- or long-term stressing events, such as bark beetle attacks. We also showed that tree decline can result from a combination of predisposing and inciting events caused by pathogens. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64748
Appears in Collections: 影响、适应和脆弱性
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作者单位: Dept. Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, P.O. Box 7026, Uppsala, SE, Sweden; Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, P.O. Box 49, Alnarp, SE, Sweden; Chaire industrielle CRSNG-UQAT-UQAM en aménagement forestier durable, Université du Québec en Abitibi-Témiscamingue, 445 boulevard de l'Université, Rouyn-Noranda, Québec, Canada
Recommended Citation:
Oliva J.,Stenlid J.,Grönkvist-Wichmann L.,et al. Pathogen-induced defoliation of Pinus sylvestris leads to tree decline and death from secondary biotic factors[J]. Forest Ecology and Management,2016-01-01,379