Influencia del paisaje en las cortas de protección en bosques de nothofagus pumilio en tierra del fuego, Argentina: Cambios en la estructura forestal y respuesta de la regeneración
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Influencia del paisaje en las cortas de protección en bosques de nothofagus pumilio en tierra del fuego, Argentina : Cambios en la estructura forestal y respuesta de la regeneración. / Paredes, Dardo; Cellini, Juan Manuel; Lencinas, Maria Vanessa; Parodi, Martin; Quiroz, Daniel; Ojeda, Javier; Farina, Sebastian; Rosas, Yamina Micaela; Pastur, Guillermo Martínez.
In: Bosque, Vol. 41, No. 1, 2020, p. 55-64.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Influencia del paisaje en las cortas de protección en bosques de nothofagus pumilio en tierra del fuego, Argentina
T2 - Cambios en la estructura forestal y respuesta de la regeneración
AU - Paredes, Dardo
AU - Cellini, Juan Manuel
AU - Lencinas, Maria Vanessa
AU - Parodi, Martin
AU - Quiroz, Daniel
AU - Ojeda, Javier
AU - Farina, Sebastian
AU - Rosas, Yamina Micaela
AU - Pastur, Guillermo Martínez
N1 - Publisher Copyright: © 2020, Universidad Austral de Chile. All rights reserved.
PY - 2020
Y1 - 2020
N2 - During the last thirty years, shelterwood cuts has been the most applied regeneration method in Nothofagus pumilio (lenga) forests. This treatment was implemented without any consideration of the landscape, and without considering yield gradients (e.g. stand site qualities), environmental restrictions (e.g. soil water availability) or potential natural disturbance factors (e.g. wind exposure). The objective was to evaluate the dynamics of the remnant forest structure and the natural regeneration 10 years after harvesting across the landscape considering different environmental gradients. Sampling plots were established in nine stands distributed across Tierra del Fuego, Argentina (north, east and south areas) where forestry activity has been concentrated during the last years. The selected areas presented differences in the rainfall regime (402 to 446 mm yr-1) and site qualities of the stands (2.6 to 3.3). Forest structure was similar among the studied areas, nevertheless harvesting intensity was variable (30 % to 57 %) generating different remnant basal areas (BA) (22 to 47 m² ha-1) and woody debris accumulation in the forest floor (167 to 230 m³ ha-1) after harvesting, or in combination with local wind-throws. The current forest structure presented differences in BA (6 to 34 m² ha-1) and established regeneration (49 to 110 thousand ha-1) that varied in height (0.6 to 1.0 m) and growth (4.1 to 12.8 cm yr-1) according to the area and the received damage due to abiotic and biotic factors. We can conclude that forests located along the considered landscapes and environmental gradients differentially responded to the proposed silvicultural treatments, where climate influenced over the post-harvest canopy stability and the established regeneration. For this, it is mandatory to define different silvicultural strategies throughout the landscape.
AB - During the last thirty years, shelterwood cuts has been the most applied regeneration method in Nothofagus pumilio (lenga) forests. This treatment was implemented without any consideration of the landscape, and without considering yield gradients (e.g. stand site qualities), environmental restrictions (e.g. soil water availability) or potential natural disturbance factors (e.g. wind exposure). The objective was to evaluate the dynamics of the remnant forest structure and the natural regeneration 10 years after harvesting across the landscape considering different environmental gradients. Sampling plots were established in nine stands distributed across Tierra del Fuego, Argentina (north, east and south areas) where forestry activity has been concentrated during the last years. The selected areas presented differences in the rainfall regime (402 to 446 mm yr-1) and site qualities of the stands (2.6 to 3.3). Forest structure was similar among the studied areas, nevertheless harvesting intensity was variable (30 % to 57 %) generating different remnant basal areas (BA) (22 to 47 m² ha-1) and woody debris accumulation in the forest floor (167 to 230 m³ ha-1) after harvesting, or in combination with local wind-throws. The current forest structure presented differences in BA (6 to 34 m² ha-1) and established regeneration (49 to 110 thousand ha-1) that varied in height (0.6 to 1.0 m) and growth (4.1 to 12.8 cm yr-1) according to the area and the received damage due to abiotic and biotic factors. We can conclude that forests located along the considered landscapes and environmental gradients differentially responded to the proposed silvicultural treatments, where climate influenced over the post-harvest canopy stability and the established regeneration. For this, it is mandatory to define different silvicultural strategies throughout the landscape.
KW - Abiotic damage
KW - Browsing
KW - Forest dynamics
KW - Natural regeneration
KW - Remnant forest canopy
U2 - 10.4067/S0717-92002020000100055
DO - 10.4067/S0717-92002020000100055
M3 - Tidsskriftartikel
AN - SCOPUS:85087878444
VL - 41
SP - 55
EP - 64
JO - Bosque
JF - Bosque
SN - 0304-8799
IS - 1
ER -
ID: 339247183