DOI: 10.1016/j.foreco.2015.09.009
Scopus记录号: 2-s2.0-84941299767
论文题名: Sex-related spatial segregation along environmental gradients in the dioecious conifer, Taxus baccata
作者: Garbarino M. ; Weisberg P.J. ; Bagnara L. ; Urbinati C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 358 起始页码: 122
结束页码: 129
语种: 英语
英文关键词: Dioecy
; Multi-scale approach
; Point pattern analysis
; Spatial segregation of the sexes
; Tree-ring
Scopus关键词: Climate change
; Forestry
; Growth rate
; Dioecy
; Multi-scale approaches
; Point pattern analysis
; Spatial segregation
; Tree rings
; Spatial distribution
; body size
; climate change
; coniferous tree
; dendrochronology
; dioecy
; dominance
; environmental gradient
; growth rate
; multicriteria analysis
; sex ratio
; sex-related difference
; spatial analysis
; spatial distribution
; tree ring
; woody plant
; Forestry
; Softwoods
; Taxus Baccata
; Italy
; Coniferophyta
; Taxus
; Taxus baccata
英文摘要: Sex-related differences in dioecious woody plants commonly result in spatial segregation of the sexes and a male-biased sex ratio, leading to strongly structured populations. We report results from more than 1000 precisely georeferenced individuals of a threatened European dioecious tree species, Taxus baccata in central Italy. We hypothesized differences between males and females in both spatial distribution and growth pattern. We used point pattern analysis (PPA) to evaluate the spatial distribution of trees as influenced by dioecy and tree size, and dendrochronological methods to study growth pattern differences between males and females. We found a dominance of female trees giving a SR of 0.79, which increased along a gradient of elevation and slope. At the microsite level, female Taxus trees were clumped to a scale of 30. m while male trees were randomly distributed. We observed a significant effect of both sex and decade in the growth pattern of Taxus trees, where annual radial growth of females was 8.3% greater than that of males. Female trees are more commonly found in wetter sites and males are widely but sparsely distributed, causing the absence of a clear spatial segregation of the sexes. Observed differences in spatial and growth patterns of males and females could possibly influence the climate change response of T. baccata, given that range expansion depends upon the availability of seed-bearing, female trees that tend to be clumped in climatically favorable sites. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65249
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Via delle Brecce Bianche 10, Ancona, Italy; Department of Natural Resources and Environmental Science, University of Nevada Reno, 1664 N. Virginia St., Reno, NV, United States; State Forestry Service (CFS) Corps - Province Headquarter, Viale Croce Benedetto 47, Ascoli Piceno, Italy
Recommended Citation:
Garbarino M.,Weisberg P.J.,Bagnara L.,et al. Sex-related spatial segregation along environmental gradients in the dioecious conifer, Taxus baccata[J]. Forest Ecology and Management,2015-01-01,358