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Spatial vs. temporal effects on demographic and genetic structures: the roles of dispersal, masting and differential mortality on patterns of recruitment in Fagus sylvatica

Spatial vs. temporal effects on demographic and genetic structures: the roles of dispersal, masting and differential mortality on patterns of recruitment in Fagus sylvatica

Authors :
Giovanni G. Vendramin
Bruno Fady
Etienne K. Klein
Sylvie Oddou-Muratorio
Source :
Molecular Ecology. 20:1997-2010
Publication Year :
2011
Publisher :
Wiley, 2011.

Abstract

Trees' long lifespan, long-distance dispersal abilities and high year-to-year variability in fecundity are thought to have pervasive consequences for the demographic and genetic structure of recruited seedlings. However, we still lack experimental studies quantifying the respective roles of spatial processes such as restricted seed and pollen dispersal and temporal processes such as mast seeding on patterns of regeneration. Dynamics of European beech (Fagus sylvatica) seedling recruitment was monitored in three plots from 2004 to 2006. Six polymorphic microsatellite genetic markers were used to characterize seedlings and their potential parents in a 7.2-ha stand. These seedlings were shown to result from 12 years of recruitment, with one predominant year of seedling recruitment in 2002 and several years without significant recruitment. Using a spatially explicit mating model based on parentage assignment, short average dispersal distances for seed (δ(s) = 10.9 m) and pollen (43.7 m < δ(p)

Details

ISSN :
09621083
Volume :
20
Database :
OpenAIRE
Journal :
Molecular Ecology
Accession number :
edsair.doi...........1e1d2d58b4dd03d1130932bb34e77336
Full Text :
https://doi.org/10.1111/j.1365-294x.2011.05039.x