DOI: 10.1016/j.foreco.2012.11.009
Scopus记录号: 2-s2.0-84871901172
论文题名: Shifting limiting factors for population dynamics and conservation status of the endangered English yew (Taxus baccata L., Taxaceae)
作者: Linares J.C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 291 起始页码: 119
结束页码: 127
语种: 英语
英文关键词: Browsing
; Conservation strategies
; Drought
; Inbreeding
; Plant-plant facilitation
; Regeneration
Scopus关键词: Browsing
; Conservation strategies
; Inbreeding
; Plant-plant facilitation
; Regeneration
; Climate change
; Conservation
; Drought
; Ecosystems
; Molecular biology
; Population dynamics
; Reforestation
; conservation status
; endangered species
; genetic analysis
; geographical region
; growth
; herbivory
; light availability
; limiting factor
; population dynamics
; sapling
; survival
; water availability
; Aves
; Taxaceae
; Taxus
; Taxus baccata
英文摘要: English yew (Taxus baccata L., Taxaceae) is a Tertiary relict locally endangered within parts of its large geographic range. In this paper, I seek to synthesise the literature and discuss the limiting factors for population dynamics and conservation status of this endangered tree. The literature was reviewed, focusing on yew fossil records, biogeography, molecular ecology, stand structure (size, age and sex ratios), and regeneration dynamics. The information reviewed illustrates diminishing population viability mainly in southern marginal areas of the geographical range of English yew. Water availability seems to be limiting yew regeneration to a greater extent than that of herbivory and shade at the southern margin, while at the northern margin such factors as light availability and frost and/or herbivory may be more important than water. Habitats with fleshy-fruited shrubs proved to be the best habitat for seed dispersion, seedling establishment and sapling survival and growth in the Mediterranean mountains. The results discussed here reveal a widespread lack of regeneration and evidence of increased genetic drift, elevated inbreeding, and depressed gene flow, mainly in southern European populations. The maintenance of healthy populations of yew in temperate forests seems to depend mainly on selective canopy opening to reduce light competition, while regeneration in Mediterranean mountains is strongly related to herbivory regulation and the conservation of well-developed forests, understories, and their community of avian dispersers. Gaps of knowledge for this species are the implications of life strategy for survival across long time periods, the different management of logging and herbivory across the yew distribution range and the predictions of recruitment under 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/66781
Appears in Collections: 影响、适应和脆弱性
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作者单位: Area de Ecología, Universidad Pablo de Olavide., Ctra. Utrera, km. 1, 41002 Sevilla, Spain
Recommended Citation:
Linares J.C.. Shifting limiting factors for population dynamics and conservation status of the endangered English yew (Taxus baccata L., Taxaceae)[J]. Forest Ecology and Management,2013-01-01,291