Environmental variables influencing regeneration of Nothofagus pumilio in a system with combined aggregated and dispersed retention

The current silvicultural prescriptions for Nothofagus are designed to stimulate natural regeneration by opening the canopy. One of these methods is variable retention, which can include either or both aggregated and dispersed retention. Different degrees of retention may modify microclimatic variab...

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Autores principales: Martínez Pastur, Guillermo José, Cellini, Juan Manuel, Lencinas, María Vanessa, Barrera, Marcelo Daniel, Peri, Pablo Luis
Formato: Articulo
Lenguaje:Inglés
Publicado: 2011
Materias:
Ciencias Agrarias
Sustainable forestry
Aggregated retention
Dispersed retention
Light availability
Soil moisture
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/151167
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-151167
record_format dspace
spelling I19-R120-10915-1511672023-04-05T20:05:52Z http://sedici.unlp.edu.ar/handle/10915/151167 issn:0378-1127 issn:1872-7042 Environmental variables influencing regeneration of Nothofagus pumilio in a system with combined aggregated and dispersed retention Martínez Pastur, Guillermo José Cellini, Juan Manuel Lencinas, María Vanessa Barrera, Marcelo Daniel Peri, Pablo Luis 2011 2023-04-05T17:12:31Z en Ciencias Agrarias Sustainable forestry Aggregated retention Dispersed retention Light availability Soil moisture The current silvicultural prescriptions for Nothofagus are designed to stimulate natural regeneration by opening the canopy. One of these methods is variable retention, which can include either or both aggregated and dispersed retention. Different degrees of retention may modify microclimatic variables differently and consequently offer dissimilar microenvironmental conditions for regeneration. Retained canopy influences both biotic and abiotic factors. The objective was to evaluate Nothofagus pumilio regeneration along edge-related gradients within aggregated retention, and in the different microenvironments within the harvested areas. The remnant canopy cover after harvesting greatly influenced regeneration mainly by decreasing radiation transmittance and soil moisture availability. Aspect (direction to the azimuth) and distance from edge of aggregates influenced regeneration density, height and growth. In dispersed retention, microenvironments generated by different types of understory plant cover, debris, and proximity of remnant trees also influenced regeneration. High levels of understory cover (up 50%) and medium levels of harvesting debris cover (25–50%) had a positive impact, while close proximity to remnant trees had a negative impact on regeneration. These findings can be used to improve silvicultural and harvesting prescriptions to ensure successful establishment of regeneration and maximize potential growth. Facultad de Ciencias Agrarias y Forestales Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 178-186
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Sustainable forestry
Aggregated retention
Dispersed retention
Light availability
Soil moisture
spellingShingle Ciencias Agrarias
Sustainable forestry
Aggregated retention
Dispersed retention
Light availability
Soil moisture
Martínez Pastur, Guillermo José
Cellini, Juan Manuel
Lencinas, María Vanessa
Barrera, Marcelo Daniel
Peri, Pablo Luis
Environmental variables influencing regeneration of Nothofagus pumilio in a system with combined aggregated and dispersed retention
topic_facet Ciencias Agrarias
Sustainable forestry
Aggregated retention
Dispersed retention
Light availability
Soil moisture
description The current silvicultural prescriptions for Nothofagus are designed to stimulate natural regeneration by opening the canopy. One of these methods is variable retention, which can include either or both aggregated and dispersed retention. Different degrees of retention may modify microclimatic variables differently and consequently offer dissimilar microenvironmental conditions for regeneration. Retained canopy influences both biotic and abiotic factors. The objective was to evaluate Nothofagus pumilio regeneration along edge-related gradients within aggregated retention, and in the different microenvironments within the harvested areas. The remnant canopy cover after harvesting greatly influenced regeneration mainly by decreasing radiation transmittance and soil moisture availability. Aspect (direction to the azimuth) and distance from edge of aggregates influenced regeneration density, height and growth. In dispersed retention, microenvironments generated by different types of understory plant cover, debris, and proximity of remnant trees also influenced regeneration. High levels of understory cover (up 50%) and medium levels of harvesting debris cover (25–50%) had a positive impact, while close proximity to remnant trees had a negative impact on regeneration. These findings can be used to improve silvicultural and harvesting prescriptions to ensure successful establishment of regeneration and maximize potential growth.
format Articulo
Articulo
author Martínez Pastur, Guillermo José
Cellini, Juan Manuel
Lencinas, María Vanessa
Barrera, Marcelo Daniel
Peri, Pablo Luis
author_facet Martínez Pastur, Guillermo José
Cellini, Juan Manuel
Lencinas, María Vanessa
Barrera, Marcelo Daniel
Peri, Pablo Luis
author_sort Martínez Pastur, Guillermo José
title Environmental variables influencing regeneration of Nothofagus pumilio in a system with combined aggregated and dispersed retention
title_short Environmental variables influencing regeneration of Nothofagus pumilio in a system with combined aggregated and dispersed retention
title_full Environmental variables influencing regeneration of Nothofagus pumilio in a system with combined aggregated and dispersed retention
title_fullStr Environmental variables influencing regeneration of Nothofagus pumilio in a system with combined aggregated and dispersed retention
title_full_unstemmed Environmental variables influencing regeneration of Nothofagus pumilio in a system with combined aggregated and dispersed retention
title_sort environmental variables influencing regeneration of nothofagus pumilio in a system with combined aggregated and dispersed retention
publishDate 2011
url http://sedici.unlp.edu.ar/handle/10915/151167
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