Effects of seed dispersal, adult tree and seedling density on the spatial genetic structure of regeneration at fine temporal and spatial scales. (Articolo in rivista)

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Label
  • Effects of seed dispersal, adult tree and seedling density on the spatial genetic structure of regeneration at fine temporal and spatial scales. (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s11295-010-0313-y (literal)
Alternative label
  • F. Sagnard, S. Oddou-Muratorio, C. Pichot, G.G. Vendramin, B. Fady (2010)
    Effects of seed dispersal, adult tree and seedling density on the spatial genetic structure of regeneration at fine temporal and spatial scales.
    in Tree genetics & genomes (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. Sagnard, S. Oddou-Muratorio, C. Pichot, G.G. Vendramin, B. Fady (literal)
Pagina inizio
  • 37 (literal)
Pagina fine
  • 48 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.springerlink.com/content/6v87m64l76039663/fulltext.pdf (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 7 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • doi: 10.1007/s11295-010-0313-y (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1 (literal)
Note
  • Google Scholar (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • F. Sagnard : S. Oddou-Muratorio : C. Pichot : B. Fady (*) INRA, UR629, Ecologie des Forêts Méditerranéennes (URFM), Domaine St Paul, Site Agroparc, 84914 Avignon cédex, France F. Sagnard CIRAD, Avenue Agropolis, TA70/01, 34398 Montpellier cédex 5, France CNR, Istituto di Genetica Vegetale,Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy (literal)
Titolo
  • Effects of seed dispersal, adult tree and seedling density on the spatial genetic structure of regeneration at fine temporal and spatial scales. (literal)
Abstract
  • Several demographic factors can produce family structured patches within natural plant populations, particularly limited seed and pollen dispersal and small effective density. In this paper, we used computer simulations to examine how seed dispersal, density, and spatial distribution of adult trees and seedlings can explain the spatial genetic structure (SGS) of natural regeneration after a single reproductive event in a small population. We then illustrated the results of our simulations using genetic (isozymes and chloroplast microsatellites) and demographic experimental data from an Abies alba (silver fir) intensive study plot located in the Southern French Alps (Mont Ventoux). Simulations showed that the structuring effect of limited dispersal on seedling SGS can largely be counterbalanced by high effective density or a clumped spatial distribution of adult trees. In addition, the clumping of natural regeneration far from adult trees, which is common in temperate forest communities where gap dynamics are predominant, further decreases SGS intensity. Contrary to our simulation results, low adult tree density, aggregated spatial distribution of seedlings, and limited seed dispersal did not generate a significant SGS in our A. alba experimental plot. Although some level of long distance pollen and seed flow could explain this lack of SGS, our experimental data confirm the role of spatial aggregation (both in adult trees and in seedlings far from adult trees) inreducing SGS in natural populations. (literal)
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