DOI: 10.1016/j.foreco.2013.05.033
Scopus记录号: 2-s2.0-84879292370
论文题名: Shift of spatial patterns during early recruitment in Fagus sylvatica: Evidence from seed dispersal estimates based on genotypic data
作者: Bontemps A. ; Klein E.K. ; Oddou-Muratorio S.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 305 起始页码: 67
结束页码: 76
语种: 英语
英文关键词: Dispersal kernel
; Fagus sylvatica
; Microsatellite markers
; Parentage analyses
; Recruitment
; Spatially Explicit Mating Model
Scopus关键词: Dispersal kernel
; Fagus sylvatica
; Microsatellite markers
; Parentage analyses
; Recruitment
; Spatially explicit
; DNA sequences
; Seed
; adult
; cohort analysis
; database
; deciduous forest
; genetic marker
; genotype-environment interaction
; mortality
; parentage
; population ecology
; recruitment (population dynamics)
; seed dispersal
; spatial variation
; Fagus
; Fagus sylvatica
英文摘要: A major challenge in population ecology of long-lived plants is to disentangle the intricate effects of seed dispersal and seedlings mortality on spatial and genetic structure of recruited seedlings. A common way to address this issue is to compare dispersal patterns among seeds (i.e. basic dispersal) and established seedlings (i.e. effective dispersal). High density-dependent mortality near adults is expected to shift the mode of the effective dispersal distance away from the mother-plant relative to the mode of the basic dispersal distance. Here, we proposed a new approach to address this issue by using seedlings cohorts of different age and by combining parentage analyses to retrieve effective seed dispersal and Spatially Explicit Mating Models (SEMM) to estimate basic seed dispersal. We applied this approach in two seedling cohorts at each of two plots of Fagus sylvatica L., relying on adult and seedling genotypes at 10 microsatellite loci. Basic seed dispersal was primarily local, with mean distances of 12-25. m (young cohort) and 22-25. m (old cohort). The effective seed dispersal distance increased between young and old cohorts from 33. m to 48. m at site 1 and from 23. m to 33. m at site 2. The hypothesis of density-dependent mortality was supported at site 2 but not at site 1 possibly because of different ecological conditions among sites. Our results shed light on the interplay between seed dispersal and density-dependent mortality in F. sylvatica. Moreover, the new approach proposed here alleviates general problems associated to synchronic studies comparing spatial patterns across different-age cohorts at a single point in time. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66447
Appears in Collections: 影响、适应和脆弱性
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作者单位: INRA, UR629 Ecologie des Forêts Méditerranéennes (URFM), F-84914 Avignon, France; INRA, UR546 Biostatistique et Processus Spatiaux (BioSP), F-84914 Avignon, France
Recommended Citation:
Bontemps A.,Klein E.K.,Oddou-Muratorio S.. Shift of spatial patterns during early recruitment in Fagus sylvatica: Evidence from seed dispersal estimates based on genotypic data[J]. Forest Ecology and Management,2013-01-01,305