DOI: 10.1016/j.foreco.2012.09.025
Scopus记录号: 2-s2.0-84867612810
论文题名: Seedling genetics and life history outweigh mycorrhizal network potential to improve conifer regeneration under drought
作者: Bingham M.A. ; Simard S.W.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 287 起始页码: 132
结束页码: 139
语种: 英语
英文关键词: Isotopes
; Mycorrhizal network
; Plant water relations
; Pseudotsuga menziesii var. glauca
; Reforestation
; Stress-gradient hypothesis
Scopus关键词: Climatic stress
; Douglas fir
; Ectomycorrhizal
; Growing stocks
; Interior Douglas-fir
; Life history
; Plant water relations
; Pseudotsuga menziesii
; Regional climate
; Seedling establishment
; Seedling performance
; Stress-gradient hypothesis
; Climate change
; Drought
; Isotopes
; Reforestation
; Value engineering
; Seed
; carbon isotope
; climate effect
; coniferous tree
; conspecific
; drought stress
; ectomycorrhiza
; environmental gradient
; environmental restoration
; fungus
; genetic structure
; growth rate
; life history
; moisture content
; plant water relations
; reforestation
; regeneration
; regional climate
; seedling establishment
; selective breeding
; survival
; Drought
; Genetic Engineering
; Isotopes
; Pseudotsuga Menziesii
; Seedlings
; Softwoods
; Coniferophyta
; Pseudotsuga
; Pseudotsuga menziesii
英文摘要: The objective of this study was to determine whether interior Douglas-fir (Pseudotsuga menziesii var. glauca) seedling establishment is affected by the presence of an ectomycorrhizal network (MN), and whether this varies by regional climate, seed provenance and seedling life history. We examined how MN facilitation varied with seedling provenance by planting interior Douglas-fir seed and nursery-grown seedlings near the crown edge of mature conspecific trees along a climatic stress gradient. Survival of outplanted nursery seedlings was greatest for the medium moisture provenance, but decreased with drought more rapidly than the wet or dry provenances. The driest provenance performed best under severe drought, but the survival of all provenances was still less than 35% under severe drought. Survival, growth and δ13C of seedlings grown from seed or in the nursery were not affected by MNs. We conclude that seedling genetic and life history effects outweigh benefits that MNs may incur upon Douglas-fir seedling performance under conditions of severe drought. Selection of appropriate provenances and robust growing stock will become of increasing importance for regenerating sites where drought is expected to increase with climate change. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66878
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Department of Forest Sciences, The University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
Recommended Citation:
Bingham M.A.,Simard S.W.. Seedling genetics and life history outweigh mycorrhizal network potential to improve conifer regeneration under drought[J]. Forest Ecology and Management,2013-01-01,287