RT info:eu-repo/semantics/contributionToPeriodical
T1 Effects of shrub and canopy cover on the relative growth rate (RGR) of Pinus pinaster seedlings of different sizes
A1 Rodríguez García, Encarna
A1 Ordóñez, Cristóbal
A1 Bravo Oviedo, Felipe
K1 Pinos-Crecimiento
AB Shrubs are recognized as important tree regeneration niches. In this study, we experimentally analysed the effects of shrub presence, canopy cover (closed cover and open cover-gaps), and seedling size on Pinus pinaster growth.ObjectiveWe expected that (1) seedling–shrub interaction would depend on seedling size and would shift from positive to negative with increasing size; (2) overstorey canopy would affect seedling–shrub interaction, with stronger and positive interactions in gaps, and (3) microsite factors would be affected by vegetation. Social status and plant size appeared to determine the post-shrub-treatment growth response.ResultsThe effect of shrub on seedling growth varied with the canopy cover. Under closed canopy, there was a shift from a positive net effect on smaller seedlings to a negative net effect on mid-size seedlings, and then back to a positive net effect on larger seedling response. Under open canopy, a negative net effect was observed, with no change in the sign of the interaction as seedling size increased. Microenvironmental conditions varied in relation to overstorey and understorey vegetation, while soil conditions varied in relation to overstorey. The seedling–shrub interaction had both positive and negative net effects, which could help define the natural regeneration dynamic of P. pinaster.
PB Springer
SN 1297-966X
YR 2011
FD 2011
LK http://uvadoc.uva.es/handle/10324/7660
UL http://uvadoc.uva.es/handle/10324/7660
LA eng
NO Annals of Forest Science (2011) 68: 337–346
NO Instituto Universitario de Gestión Forestal Sostenible
DS UVaDOC
RD 22-nov-2024