DOI: 10.1016/j.foreco.2013.05.008
Scopus记录号: 2-s2.0-84879515782
论文题名: Interactions between stand thinning, site quality and host tree species on spruce budworm biological performance and host tree resistance over a 6 year period after thinning
作者: Bauce T. ; Fuentealba A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 304 起始页码: 212
结束页码: 223
语种: 英语
英文关键词: Balsam fir
; Drainage quality
; Host tree resistance
; Spruce budworm
; Spruce spp.
; Thinning
Scopus关键词: Balsam fir
; Host trees
; Spruce budworm
; Spruce spp
; Thinning
; Chemical analysis
; Managers
; Quality control
; Forestry
; deciduous forest
; defoliation
; foliage
; forest management
; insect
; pest resistance
; thinning
; Abies Amabilis
; Chemical Analysis
; Drainage
; Forestry
; Insects
; Picea
; Quality Control
; Thinning
英文摘要: Forest management activities such as thinning have been proposed to reduce defoliation damage incurred by spruce budworm (Choristoneura fumiferana (Clem.)). Yet, information regarding thinning effects on tree and stand vulnerability to spruce budworm is equivocal. A better understanding of thinning with respect to host tree resistance and budworm performance could be useful to reduce its impacts while respecting forest ecological integrity. Our objectives were (1) to evaluate the effects of thinning and site drainage quality on balsam fir (Abies balsamea (L.) Mill.), white spruce (Picea glauca (Moench) Voss) and black spruce (P. mariana (Mill.) BSP) resistance to spruce budworm through time (6. years) and (2) to produce a resistance classification model that could be used by forest managers to determine when and where to apply this treatment. Field-rearing experiments of spruce budworm were conducted, together with foliar chemical analyses, along a gradient of stand thinning intensity (0%, control; 25%, light; 40%, heavy) and drainage class (rapidly drained, class 2; mesic with seepage, class 3; subhygric, class 4; hydric, class 5). Budworm performance was followed throughout the insect's life cycle, including its winter biology. Balsam fir resistance, unlike that of white and black spruce, was significantly reduced 1. year after thinning. Fir response was related to increased defoliation linked to reduction of certain monoterpenes on mesic sites and to decreased foliage production on subhygric sites. On hydric sites, thinning increased fir resistance by increasing foliage production. We observed an opposite response 3. years after treatment. Heavy thinning (40%) positively affected balsam fir and white spruce tolerance and, therefore, tree resistance, by increasing foliage production and the amount remaining after budworm feeding throughout the study, except 6. years after thinning in white spruce growing on mesic sites. From the fourth year onward, black spruce resistance was positively affected by thinning. This response was observed despite thinning also having favoured insect performance (high female pupal mass), which resulted in greater foliage destruction in thinned stands. These findings suggest that thinning may be used to increase tree and stand resistance to spruce budworm. Our resistance classification system could be useful to forest managers in planning thinning that would reduce budworm impacts at the stand level. © 2013 Elsevier B.V.. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66500
Appears in Collections: 影响、适应和脆弱性
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作者单位: Centre d'étude de la forêt (CEF), Département des sciences du bois et de la forêt, Faculté de foresterie, De géographie et de géomatique, Université Laval, QC, G1V 0A6, Canada
Recommended Citation:
Bauce T.,Fuentealba A.. Interactions between stand thinning, site quality and host tree species on spruce budworm biological performance and host tree resistance over a 6 year period after thinning[J]. Forest Ecology and Management,2013-01-01,304