TY  - JOUR
AU  - Scotti, I.
AU  - Gugerli, F.
AU  - Pastorelli, R.
AU  - Sebastiani, F.
AU  - Vendramin, G.G.
PY  - 2008//
TI  - Maternally and paternally inherited molecular markers elucidate population patterns and inferred dispersal processes on a small scale within a subalpine stand of Norway spruce (Picea abies [L.] Karst.)
T2  - For. Ecol. Manage.
JO  - Forest Ecology and Management
SP  - 3806
EP  - 3812
VL  - 255
IS  - 11
PB  - ELSEVIER SCIENCE BV
KW  - chloroplast microsatellites
KW  - mitochondrial minisatellites
KW  - pollen/seed dispersal
KW  - demography
KW  - spatial autocorrelation
N2  - The within-population spatial structure of genetic diversity is shaped by demographic processes, including historical accidents such as forest perturbations. Information drawn from the analysis of the spatial distribution of genetic diversity is therefore inherently linked to demographic-historical processes that ultimately determine the fate of populations. All adult trees and saplings in a 1.4-ha plot within a mixed Norway spruce (Picea abies [L.] Karst) stand were characterised by means of chloroplast (paternally inherited) markers, and a large sub-sample of these were genotyped at mitochondrial (maternally inherited) molecular markers. These data were used to analyse the spatial distribution of genetic variation and to compare the patterns corresponding to the two marker types. The plot presented non-homogeneous local stem density in the younger cohorts, and the indirect effect of this source of variation on the spatial genetic structure was investigated. Results suggest that (i) spatially limited seed dispersal induced patchiness in genotype distribution, while pollen flow had a homogenising effect; (ii) deviations from random spatial structure were stronger in the demographically most stable portions of the stand, while they were weaker where sudden bursts of regeneration occurred; (iii) spatially overlapping adult and sapling cohorts displayed the same spatial genetic structure (stronger on stable areas, weaker in portions of the stand undergoing events of intense regeneration), which was substantiated by the influence of local demographic processes. Regeneration dynamics as modulated by demography thus influences the distribution of genetic diversity within the stand both in the younger life stages and in the adult population. (C) 2008 Elsevier B.V. All rights reserved.
SN  - 0378-1127
N1  - ISI:000257019100019
ID  - Scotti_etal2008
ER  -