Timber management with variable retention in Nothofagus pumilio forests of Southern Patagonia |
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Authors: | Guillermo Martí nez Pastur,Marí a Vanessa Lencinas,Juan Manuel Cellini,Pablo Luis Peri,Rosina Soler Esteban |
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Affiliation: | 1. Centro Austral de Investigaciones Científicas (CONICET), cc 92 (9410) Ushuaia, Tierra del Fuego, Argentina;2. Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, cc 31 (1900) La Plata, Buenos Aires, Argentina;3. Instituto Nacional de Tecnología Agropecuaria - Universidad Nacional de la Patagonia Austral - CONICET, cc 332 (9400) Río Gallegos, Santa Cruz, Argentina |
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Abstract: | Forestry practices integrating ecological and social criteria have been replacing those based only on economic values. Traditional silviculture, such as shelterwood cuts (SC), transforms uneven-aged original stands to an even-aged managed forest. Recently, other methods have proposed to conserve some of the original heterogeneity of the old-growth forests. One proposal leaves 30% of the timber quality forest area as aggregated retention and 20% basal area as dispersed retention. The aim of this study was to analyze the feasibility of timber management with aggregated and dispersed retention in Nothofagus pumilio old-growth forests by analyzing timber and harvesting yield potential compared with traditional regeneration systems. Also, remnant tree stability of aggregated retention was analyzed. |
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Keywords: | Sustainable forestry Aggregated retention Dispersed retention Yield Windthrow |
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