Shelterwood cut intensity determines recovery pathways of managed Nothofagus pumilio forests
Background: Forest harvesting is the main driver of change in forest structure and natural regeneration dynamics during management. Forest recovery after disturbances is important for economic values and ecological processes of natural forests. The aim of the study was to assess recovery paths of No...
| Autores principales: | , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
SCION
2024
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/18266 https://nzjforestryscience.nz/index.php/nzjfs/article/view/301 https://doi.org/10.33494/nzjfs542024x301x |
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| author | Chaves, Jimena Elizabeth Aravena Acuña, Marie Claire Rodríguez‑Souilla, Julián Cellini, Juan Manuel Lencinas, María Vanessa Peri, Pablo Luis Martínez Pastur, Guillermo José |
| author_browse | Aravena Acuña, Marie Claire Cellini, Juan Manuel Chaves, Jimena Elizabeth Lencinas, María Vanessa Martínez Pastur, Guillermo José Peri, Pablo Luis Rodríguez‑Souilla, Julián |
| author_facet | Chaves, Jimena Elizabeth Aravena Acuña, Marie Claire Rodríguez‑Souilla, Julián Cellini, Juan Manuel Lencinas, María Vanessa Peri, Pablo Luis Martínez Pastur, Guillermo José |
| author_sort | Chaves, Jimena Elizabeth |
| collection | INTA Digital |
| description | Background: Forest harvesting is the main driver of change in forest structure and natural regeneration dynamics during management. Forest recovery after disturbances is important for economic values and ecological processes of natural forests. The aim of the study was to assess recovery paths of Nothofagus pumilio (Poepp. & Endl.) Krasser forests regarding stand structure, environmental characteristics and regeneration values after two harvest intensities of shelterwood regeneration cuts during four different periods after harvesting (YAH). Methods: A total of 59 stands harvested under shelterwood regeneration cuts, including four YAH periods (0-2, 3-10, 11-40, >40 years), and 41 unmanaged stands of N. pumilio forests were sampled in Tierra del Fuego, Argentina. Forest structure, environmental characteristics and regeneration values were measured and compared by analyses of variance, using harvesting intensity, YAH and age structure as main factors. These variables were used to calculate different indices
to define recovery pathways for the different treatments. Results: Forest structural variables such as basal area and total volume over bark differed between harvesting intensities, and the differences with unmanaged forests tend to decrease over time. Soil variables did not significantly differ among young and mature unmanaged forests or managed forests under low or high harvesting intensities. In contrast, light availability presented differences in unmanaged forests compared to managed forests among different harvesting
intensities and YAH, although the gap decreased with time particularly beyond 40 YAH. Some regeneration variables, such as
seedling density, differed among young and mature unmanaged forests, but did not change with harvesting intensity. Other
regeneration variables, such as seedling height and sapling density increased with YAH. The forest index (FI), environment index (EI), and regeneration index (RI) showed different pathways for harvested forests over time, where greater changes were observed for high intensity shelterwood cuts. The differences, compared to unmanaged forests, drastically reduced beyond 40 YAH, regardless of harvesting intensity. Conclusions: Forest structural, environmental and regeneration variables followed different pathways over time for the studied harvesting intensities of shelterwood regeneration cuts when compared to unmanaged forests. As expected,
greatest differences on all these variables from natural conditions occurred when more intense harvesting was carried out. Our results suggests that N. pumilio forests were resilient to shelterwood regeneration cuts regarding forest structure, regeneration, and environmental conditions (soil properties and light availability), reaching comparable values to unmanaged forests beyond 40 YAH. |
| format | Artículo |
| id | INTA18266 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | SCION |
| publisherStr | SCION |
| record_format | dspace |
| spelling | INTA182662024-06-26T10:27:31Z Shelterwood cut intensity determines recovery pathways of managed Nothofagus pumilio forests Chaves, Jimena Elizabeth Aravena Acuña, Marie Claire Rodríguez‑Souilla, Julián Cellini, Juan Manuel Lencinas, María Vanessa Peri, Pablo Luis Martínez Pastur, Guillermo José Primary Forests Forest Management Stand Structure Regeneration Basal Area Environmental Factors Shelterwood Systems Bosques Primarios Nothofagus pumilio Ordenación Forestal Estructura del Rodal Regeneración Área Basal Factores Ambientales Sistemas de Cortas de Protección Uniforme Tierra del Fuego Natural Regeneration Harvesting Intensities Seedling Height Regeneración Natural Intensidades de Corta Altura de la Plántula Background: Forest harvesting is the main driver of change in forest structure and natural regeneration dynamics during management. Forest recovery after disturbances is important for economic values and ecological processes of natural forests. The aim of the study was to assess recovery paths of Nothofagus pumilio (Poepp. & Endl.) Krasser forests regarding stand structure, environmental characteristics and regeneration values after two harvest intensities of shelterwood regeneration cuts during four different periods after harvesting (YAH). Methods: A total of 59 stands harvested under shelterwood regeneration cuts, including four YAH periods (0-2, 3-10, 11-40, >40 years), and 41 unmanaged stands of N. pumilio forests were sampled in Tierra del Fuego, Argentina. Forest structure, environmental characteristics and regeneration values were measured and compared by analyses of variance, using harvesting intensity, YAH and age structure as main factors. These variables were used to calculate different indices to define recovery pathways for the different treatments. Results: Forest structural variables such as basal area and total volume over bark differed between harvesting intensities, and the differences with unmanaged forests tend to decrease over time. Soil variables did not significantly differ among young and mature unmanaged forests or managed forests under low or high harvesting intensities. In contrast, light availability presented differences in unmanaged forests compared to managed forests among different harvesting intensities and YAH, although the gap decreased with time particularly beyond 40 YAH. Some regeneration variables, such as seedling density, differed among young and mature unmanaged forests, but did not change with harvesting intensity. Other regeneration variables, such as seedling height and sapling density increased with YAH. The forest index (FI), environment index (EI), and regeneration index (RI) showed different pathways for harvested forests over time, where greater changes were observed for high intensity shelterwood cuts. The differences, compared to unmanaged forests, drastically reduced beyond 40 YAH, regardless of harvesting intensity. Conclusions: Forest structural, environmental and regeneration variables followed different pathways over time for the studied harvesting intensities of shelterwood regeneration cuts when compared to unmanaged forests. As expected, greatest differences on all these variables from natural conditions occurred when more intense harvesting was carried out. Our results suggests that N. pumilio forests were resilient to shelterwood regeneration cuts regarding forest structure, regeneration, and environmental conditions (soil properties and light availability), reaching comparable values to unmanaged forests beyond 40 YAH. EEA Santa Cruz Fil: Chaves, Jimena Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas (CADIC); Argentina. Fil: Aravena Acuña, Marie Claire. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas (CADIC). Laboratorio de Recursos Agroforestales; Argentina. Fil: Rodríguez‑Souilla, Julián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas (CADIC); Argentina. Fil: Cellini, Juan Manuel. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Laboratorio de Investigaciones en Maderas. La Plata, Buenos Aires; Argentina. Fil: Lencinas, María Vanessa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas (CADIC); Argentina. Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina. Fil: Martínez Pastur, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas (CADIC); Argentina. 2024-06-26T10:19:13Z 2024-06-26T10:19:13Z 2024-05-31 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/18266 https://nzjforestryscience.nz/index.php/nzjfs/article/view/301 Chaves J.E.; Aravena Acuña M.C.; Rodríguez-Souilla J.; Cellini J.M.; Lencinas M.V.; Peri P.L.; Martínez Pastur G. (2024) Shelterwood cut intensity determines recovery pathways of managed Nothofagus pumilio forests. New Zealand Journal of Forestry Science 54: e10. https://doi.org/10.33494/nzjfs542024x301x 1179-5395 https://doi.org/10.33494/nzjfs542024x301x eng info:eu-repo/semantics/openAccess 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 SCION New Zealand Journal of Forestry Science 54 : e10. (2024) |
| spellingShingle | Primary Forests Forest Management Stand Structure Regeneration Basal Area Environmental Factors Shelterwood Systems Bosques Primarios Nothofagus pumilio Ordenación Forestal Estructura del Rodal Regeneración Área Basal Factores Ambientales Sistemas de Cortas de Protección Uniforme Tierra del Fuego Natural Regeneration Harvesting Intensities Seedling Height Regeneración Natural Intensidades de Corta Altura de la Plántula Chaves, Jimena Elizabeth Aravena Acuña, Marie Claire Rodríguez‑Souilla, Julián Cellini, Juan Manuel Lencinas, María Vanessa Peri, Pablo Luis Martínez Pastur, Guillermo José Shelterwood cut intensity determines recovery pathways of managed Nothofagus pumilio forests |
| title | Shelterwood cut intensity determines recovery pathways of managed Nothofagus pumilio forests |
| title_full | Shelterwood cut intensity determines recovery pathways of managed Nothofagus pumilio forests |
| title_fullStr | Shelterwood cut intensity determines recovery pathways of managed Nothofagus pumilio forests |
| title_full_unstemmed | Shelterwood cut intensity determines recovery pathways of managed Nothofagus pumilio forests |
| title_short | Shelterwood cut intensity determines recovery pathways of managed Nothofagus pumilio forests |
| title_sort | shelterwood cut intensity determines recovery pathways of managed nothofagus pumilio forests |
| topic | Primary Forests Forest Management Stand Structure Regeneration Basal Area Environmental Factors Shelterwood Systems Bosques Primarios Nothofagus pumilio Ordenación Forestal Estructura del Rodal Regeneración Área Basal Factores Ambientales Sistemas de Cortas de Protección Uniforme Tierra del Fuego Natural Regeneration Harvesting Intensities Seedling Height Regeneración Natural Intensidades de Corta Altura de la Plántula |
| url | http://hdl.handle.net/20.500.12123/18266 https://nzjforestryscience.nz/index.php/nzjfs/article/view/301 https://doi.org/10.33494/nzjfs542024x301x |
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