Woody vegetation structure of xeric forest stands under different edaphic site conditions and disturbance histories in the Biosphere Reserve 'Parque Costero del Sur', Argentina

We studied stand structures and soil properties in an old-growth forest and two 30-yr-old second-growth stands. In the old-growth forest, the total density and basal area average 1566 trees > 1.25 m height ha-1 and 46.73 m2 ha-1. The dominant trees are Scutia buxifolia and Celtis tala. Using...

Descripción completa

Guardado en:
Detalles Bibliográficos
Publicado: 1998
Materias:
Forest conservation
Logging
Multivariate techniques
Old-growth forest
Soil properties
Stand structure
environmental disturbance
old-growth forest
soil property
stand structure
Argentina
Celtis tala
Ligustrum lucidum
Schinus polygamus
Scutia buxifolia
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13850237_v139_n2_p189_Ribichich
http://hdl.handle.net/20.500.12110/paper_13850237_v139_n2_p189_Ribichich
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_13850237_v139_n2_p189_Ribichich
record_format dspace
spelling paper:paper_13850237_v139_n2_p189_Ribichich2025-07-30T18:48:20Z Woody vegetation structure of xeric forest stands under different edaphic site conditions and disturbance histories in the Biosphere Reserve 'Parque Costero del Sur', Argentina Forest conservation Logging Multivariate techniques Old-growth forest Soil properties Stand structure environmental disturbance old-growth forest soil property stand structure Argentina Celtis tala Ligustrum lucidum Schinus polygamus Scutia buxifolia We studied stand structures and soil properties in an old-growth forest and two 30-yr-old second-growth stands. In the old-growth forest, the total density and basal area average 1566 trees > 1.25 m height ha-1 and 46.73 m2 ha-1. The dominant trees are Scutia buxifolia and Celtis tala. Using multivariate techniques we distinguished three stands: PS1, dominated by S. buxifolia, is 1000 m far from the river. Its soil is shallow and loamy. PS2 and PS3, codominated by S. buxifolia and C. tala, are over 1200 m distant from the river. There the soil is deeper and has thicker texture and higher phosphorus and calcium concentrations than the near-the-river forest soil. Scutia buxifolia shows reverse J-shaped size-distributions and has morphological features of stress-tolerant species. Celtis tala shows oscillating decay size-curves that suggest recruitment pulses related to small gaps and it has morphological features of competitive species. Celtis tala was selectively cut in the past in the second-growth stands SNRD and SRD. The stand SNRD, 1000 m far from the river, is dominated by S. buxifolia. The second species is Schinus polygamus which presents the bell-shaped size-structure of the pioneer species. SNRD does not differ from its old-growth counterpart PS1 in total tree density, basal area and tree branching. The stand SRD, over 1200 m distant from the river, is co-dominated by S. buxifolia and by C. tala trees regenerated from stumps. SRD does not differ from its old-growth counterparts PS2 and PS3 in total tree density and basal area. As to tree branching, it does not differ from PS3, but differs from PS2. All the stands are being invaded by the exotic tree Ligustrum lucidum. The differences between the old-growth stands seem to be related to the gradients of soil texture and nutrient concentrations raising edaphic stress towards the river. In SNRD, the stress, the stress-tolerance of S. buxifolia, and the aptitude of S. polygamus to recruit in disturbed habitats seem to have prevented the post-logging recruitment of C. tala. In SRD, C. tala regenerated possibly due to a better competitive performance in a more favorable site. Under protection the second-growth stands recovered the old-growth quantitative features. We recommend the restoration of the qualitative features and the control of L. lucidum. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13850237_v139_n2_p189_Ribichich http://hdl.handle.net/20.500.12110/paper_13850237_v139_n2_p189_Ribichich
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Forest conservation
Logging
Multivariate techniques
Old-growth forest
Soil properties
Stand structure
environmental disturbance
old-growth forest
soil property
stand structure
Argentina
Celtis tala
Ligustrum lucidum
Schinus polygamus
Scutia buxifolia
spellingShingle Forest conservation
Logging
Multivariate techniques
Old-growth forest
Soil properties
Stand structure
environmental disturbance
old-growth forest
soil property
stand structure
Argentina
Celtis tala
Ligustrum lucidum
Schinus polygamus
Scutia buxifolia
Woody vegetation structure of xeric forest stands under different edaphic site conditions and disturbance histories in the Biosphere Reserve 'Parque Costero del Sur', Argentina
topic_facet Forest conservation
Logging
Multivariate techniques
Old-growth forest
Soil properties
Stand structure
environmental disturbance
old-growth forest
soil property
stand structure
Argentina
Celtis tala
Ligustrum lucidum
Schinus polygamus
Scutia buxifolia
description We studied stand structures and soil properties in an old-growth forest and two 30-yr-old second-growth stands. In the old-growth forest, the total density and basal area average 1566 trees > 1.25 m height ha-1 and 46.73 m2 ha-1. The dominant trees are Scutia buxifolia and Celtis tala. Using multivariate techniques we distinguished three stands: PS1, dominated by S. buxifolia, is 1000 m far from the river. Its soil is shallow and loamy. PS2 and PS3, codominated by S. buxifolia and C. tala, are over 1200 m distant from the river. There the soil is deeper and has thicker texture and higher phosphorus and calcium concentrations than the near-the-river forest soil. Scutia buxifolia shows reverse J-shaped size-distributions and has morphological features of stress-tolerant species. Celtis tala shows oscillating decay size-curves that suggest recruitment pulses related to small gaps and it has morphological features of competitive species. Celtis tala was selectively cut in the past in the second-growth stands SNRD and SRD. The stand SNRD, 1000 m far from the river, is dominated by S. buxifolia. The second species is Schinus polygamus which presents the bell-shaped size-structure of the pioneer species. SNRD does not differ from its old-growth counterpart PS1 in total tree density, basal area and tree branching. The stand SRD, over 1200 m distant from the river, is co-dominated by S. buxifolia and by C. tala trees regenerated from stumps. SRD does not differ from its old-growth counterparts PS2 and PS3 in total tree density and basal area. As to tree branching, it does not differ from PS3, but differs from PS2. All the stands are being invaded by the exotic tree Ligustrum lucidum. The differences between the old-growth stands seem to be related to the gradients of soil texture and nutrient concentrations raising edaphic stress towards the river. In SNRD, the stress, the stress-tolerance of S. buxifolia, and the aptitude of S. polygamus to recruit in disturbed habitats seem to have prevented the post-logging recruitment of C. tala. In SRD, C. tala regenerated possibly due to a better competitive performance in a more favorable site. Under protection the second-growth stands recovered the old-growth quantitative features. We recommend the restoration of the qualitative features and the control of L. lucidum.
title Woody vegetation structure of xeric forest stands under different edaphic site conditions and disturbance histories in the Biosphere Reserve 'Parque Costero del Sur', Argentina
title_short Woody vegetation structure of xeric forest stands under different edaphic site conditions and disturbance histories in the Biosphere Reserve 'Parque Costero del Sur', Argentina
title_full Woody vegetation structure of xeric forest stands under different edaphic site conditions and disturbance histories in the Biosphere Reserve 'Parque Costero del Sur', Argentina
title_fullStr Woody vegetation structure of xeric forest stands under different edaphic site conditions and disturbance histories in the Biosphere Reserve 'Parque Costero del Sur', Argentina
title_full_unstemmed Woody vegetation structure of xeric forest stands under different edaphic site conditions and disturbance histories in the Biosphere Reserve 'Parque Costero del Sur', Argentina
title_sort woody vegetation structure of xeric forest stands under different edaphic site conditions and disturbance histories in the biosphere reserve 'parque costero del sur', argentina
publishDate 1998
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13850237_v139_n2_p189_Ribichich
http://hdl.handle.net/20.500.12110/paper_13850237_v139_n2_p189_Ribichich
_version_ 1840325205639036928

Ejemplares similares