Seedling density according to structure, dominance and understory cover in old-growth forest stands of the evergreen forest type in the coastal range of Chile

Securing timely regeneration is essential in maintaining the long-term ecological or silvicultural functions and values of forests. Its establishment, in turn, depends on many factors, including the structure and composition of the forest itself. Available information shows that seedling density var...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Donoso,Pablo J., Nyland,Ralph D.
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2005
Materias:	Laurelia philippiana Aextoxicon punctatum old-growth forests vertical structure Chusquea spp
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000100005
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0716-078X2005000100005
record_format	dspace
spelling	oai:scielo:S0716-078X20050001000052005-05-31Seedling density according to structure, dominance and understory cover in old-growth forest stands of the evergreen forest type in the coastal range of ChileDonoso,Pablo J.Nyland,Ralph D. Laurelia philippiana Aextoxicon punctatum old-growth forests vertical structure Chusquea spp Securing timely regeneration is essential in maintaining the long-term ecological or silvicultural functions and values of forests. Its establishment, in turn, depends on many factors, including the structure and composition of the forest itself. Available information shows that seedling density varies greatly across the evergreen forest type in Chile. Yet stand variables that may affect the establishment of advance regeneration have not been studied. To that end, we evaluated seven stands of the coastal range, within the northern part of the evergreen forest type (39°14'-40°16' S). We documented understory cover, tree density and dominance, and stand structure, and used the information to assess their effects over seedling density. Findings indicate that Laurelia philippiana was the dominant canopy and regenerating species in these stands. Also, seedling density was significantly greater in stands at lower elevations where shade-tolerant Aextoxicon punctatum was important. Chusquea spp. and Lophosoria quadripinnata, both understory species, had a significant negative effect on seedling density. Basal area and canopy cover, per se, showed little relationship with seedling density. Vertical structure, evaluated through a crown index, had a significant relationship with seedling density, but the direction depended on the species (e.g., L. philippiana and A. punctatum) and the diameter structure within our plots. Fitted models that included these variables were highly significant, and in most cases their significance increased considerably (14 to 26 %) when we accounted for the diameter structures of the plotsinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.78 n.1 20052005-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000100005en10.4067/S0716-078X2005000100005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Laurelia philippiana Aextoxicon punctatum old-growth forests vertical structure Chusquea spp
spellingShingle	Laurelia philippiana Aextoxicon punctatum old-growth forests vertical structure Chusquea spp Donoso,Pablo J. Nyland,Ralph D. Seedling density according to structure, dominance and understory cover in old-growth forest stands of the evergreen forest type in the coastal range of Chile
description	Securing timely regeneration is essential in maintaining the long-term ecological or silvicultural functions and values of forests. Its establishment, in turn, depends on many factors, including the structure and composition of the forest itself. Available information shows that seedling density varies greatly across the evergreen forest type in Chile. Yet stand variables that may affect the establishment of advance regeneration have not been studied. To that end, we evaluated seven stands of the coastal range, within the northern part of the evergreen forest type (39°14'-40°16' S). We documented understory cover, tree density and dominance, and stand structure, and used the information to assess their effects over seedling density. Findings indicate that Laurelia philippiana was the dominant canopy and regenerating species in these stands. Also, seedling density was significantly greater in stands at lower elevations where shade-tolerant Aextoxicon punctatum was important. Chusquea spp. and Lophosoria quadripinnata, both understory species, had a significant negative effect on seedling density. Basal area and canopy cover, per se, showed little relationship with seedling density. Vertical structure, evaluated through a crown index, had a significant relationship with seedling density, but the direction depended on the species (e.g., L. philippiana and A. punctatum) and the diameter structure within our plots. Fitted models that included these variables were highly significant, and in most cases their significance increased considerably (14 to 26 %) when we accounted for the diameter structures of the plots
author	Donoso,Pablo J. Nyland,Ralph D.
author_facet	Donoso,Pablo J. Nyland,Ralph D.
author_sort	Donoso,Pablo J.
title	Seedling density according to structure, dominance and understory cover in old-growth forest stands of the evergreen forest type in the coastal range of Chile
title_short	Seedling density according to structure, dominance and understory cover in old-growth forest stands of the evergreen forest type in the coastal range of Chile
title_full	Seedling density according to structure, dominance and understory cover in old-growth forest stands of the evergreen forest type in the coastal range of Chile
title_fullStr	Seedling density according to structure, dominance and understory cover in old-growth forest stands of the evergreen forest type in the coastal range of Chile
title_full_unstemmed	Seedling density according to structure, dominance and understory cover in old-growth forest stands of the evergreen forest type in the coastal range of Chile
title_sort	seedling density according to structure, dominance and understory cover in old-growth forest stands of the evergreen forest type in the coastal range of chile
publisher	Sociedad de Biología de Chile
publishDate	2005
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000100005
work_keys_str_mv	AT donosopabloj seedlingdensityaccordingtostructuredominanceandunderstorycoverinoldgrowthforeststandsoftheevergreenforesttypeinthecoastalrangeofchile AT nylandralphd seedlingdensityaccordingtostructuredominanceandunderstorycoverinoldgrowthforeststandsoftheevergreenforesttypeinthecoastalrangeofchile
_version_	1718439569393713152

Seedling density according to structure, dominance and understory cover in old-growth forest stands of the evergreen forest type in the coastal range of Chile

Ejemplares similares