Memorias de investigación
Artículos en revistas:
Can seed production and restricted dispersal limit recruitment in Pinus pinaster Aiton from the Spanish Northern Plateau?
Año:2014
Áreas de investigación
  • Ciencias naturales y ciencias de la salud
Datos
Descripción
Natural regeneration faces increasing difficulties in dry forests from the Mediterranean basin, including for normally well-regenerating species such as maritime pine (Pinus pinaster Aiton). In this paper, we studied female fertility, seed dispersal and spread rates in P. pinaster from the Spanish Northern Plateau, where natural regeneration failure is a main concern for forest managers. For this purpose we periodically collected data from seed traps and trees located at two core locations across several years. We found significant variation in interannual cone production, with the best seed trees being the same across years. In addition, we found highly skewed distributions of female reproductive effort and large fertility differences across stands located few kilometres away. Annual seed dispersal kernels fitted lognormal or 2Dt models depending on the stand analysed, with median dispersal distances between 14 and 25 m. Kernels fitted for maximum dispersal periods showed an outstanding intraseasonal variation of median dispersal distances, from 10 to 54 m, in association to variable patterns of rainfall and maximum wind speed. The amount of seed produced appeared to be enough to guarantee the natural regeneration of the stands during the typical 20-year regeneration period. Colonisation simulations concluded that Mediterranean maritime pine has a notable dispersion capacity, which is strongly influenced by levels of fecundity and, especially, by the number and frequency of long-distance dispersal events. The latter play a key role in tree dispersion processes through enlarging the occupied area and fostering the invasion of abandoned crop land.
Internacional
Si
JCR del ISI
Si
Título de la revista
Forest Ecology and Management
ISSN
0378-1127
Factor de impacto JCR
Información de impacto
Volumen
313
DOI
Número de revista
Desde la página
329
Hasta la página
339
Mes
SIN MES
Ranking
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Participantes
  • Autor: L Juez INIA
  • Autor: S González-Martínez INIA
  • Autor: Nikolaos Nanos . UPM
  • Autor: A de-Lucas
  • Autor: C Ordoñez
  • Autor: C del Peso
  • Autor: F Bravo
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Genética, Fisiología e Historia Forestal
  • Departamento: Sistemas y Recursos Naturales