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Memorias de investigación
Artículos en revistas:
Small-scale variation of vegetation in a mixed forest understorey is partly controlled by the effect of overstory composition on litter acumulation
Año:2010
Áreas de investigación
  • Medio natural,
  • Ecosistema
Datos
Descripción
We investigated how richness and composition of vascular plant species in the understory of a mixed hardwood forest stand varied with respect to the abundance and composition of the overstory. The stand is in central Spain and represents the southernmost range of distribution of several tree and herbaceous species in Europe. Understory species were identified in 46 quadrats (0.25 m2) where variables litter depth and light availability were measured. In addition, we estimated tree density, basal area, and percent basal area by tree species within 6-mradius areas around each plot. Species richness and composition were studied using path analysis and scaledependent geostatistical methods, respectively. We found that the relative abundance of certain trees species in the overstory was more important than total overstory abundance in explaining understory species richness. Richness decreased as soil litter depth increased, and soil litter increased as the relative proportion of Fagus sylvatica in the overstory increased, which accounted for a negative, indirect effect of Fagus sylvatica on richness. Regarding understory species composition, we found that some species distributed preferentially below certain tree species. For example, Melica uniflora was most frequent below Fagus sylvatica and Quercus petraea while the increasing proportion of Q. pyrenaica in the overstory favored the presence of Cruciata glabra, Arenaria montana, Prunus avium, Conopodium bourgaei, Holcus mollis, Stellaria media and Galium aparine in the understory. Overall, these results emphasize the importance of individual tree species in controlling the assemblage and richness of understory species in mixed stands. We conclude that soil litter accumulation is one way through which overstory composition shapes the understory community.
Internacional
Si
JCR del ISI
Si
Título de la revista
EUROPEAN JOURNAL OF FOREST RESEARCH
ISSN
1612-4669
Factor de impacto JCR
1,867
Información de impacto
Volumen
DOI
10.1007/s10310-010-0237-2
Número de revista
Desde la página
1
Hasta la página
11
Mes
NOVIEMBRE
Ranking
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Participantes
  • Autor: Unai Lopez de Heredia Larrea (UPM)
  • Autor: Luis Alfonso Gil Sanchez (UPM)
  • Autor: Jesus Rodriguez Calcerrada (UPM)
  • Participante: MARIA DEL CARMEN DEL REY GRANADO
  • Autor: Rafael Escribano Bombin (UPM)
  • Autor: Nikolaos Nanos (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Ecología y Paisaje
  • Departamento: Proyectos y Planificación Rural
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