Climate influence seed production in managed and unmanaged Nothofagus pumilio forests of Southern Patagonia
Background: Annual seed production is key to understand natural forest dynamics and to apply sustainable forest management. This process is subjected to variations according to annual and seasonal climatic conditions, locally affected by El Niño-Southern Oscillation (ENSO) and the Southern Annular M...
| Autores principales: | , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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SCION
2024
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/18832 https://nzjforestryscience.nz/index.php/nzjfs/article/view/295 https://doi.org/10.33494/nzjfs542024x295x |
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| author | Rodríguez‑Souilla, Julián Cellini, Juan Manuel Roig Junent, Fidel Alejandro Lencinas, María Vanessa Chaves, Jimena Elizabeth Aravena Acuña, Marie Claire 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 Roig Junent, Fidel Alejandro |
| author_facet | Rodríguez‑Souilla, Julián Cellini, Juan Manuel Roig Junent, Fidel Alejandro Lencinas, María Vanessa Chaves, Jimena Elizabeth Aravena Acuña, Marie Claire Peri, Pablo Luis Martínez Pastur, Guillermo José |
| author_sort | Rodríguez‑Souilla, Julián |
| collection | INTA Digital |
| description | Background: Annual seed production is key to understand natural forest dynamics and to apply sustainable forest management. This process is subjected to variations according to annual and seasonal climatic conditions, locally affected by El Niño-Southern Oscillation (ENSO) and the Southern Annular Mode (SAM) seasonality. Recognising how these variables affect the dynamics of harvested forests is useful for developing forest management strategies. Therefore, the objective of this study was to analyse annual seed production (SP) in Nothofagus pumilio (Poepp. & Endl.) Krasser stands harvested under variable retention and unmanaged primary forests in Tierra del Fuego, Argentina, related to the occurrence of climatic events over a 17-year period (2006-2022).
Methods: Seed production (million ha-1 year-1) was annually measured in three managed stands with different retention levels (AR: aggregates; DRI: dispersed with aggregate protection; DR: dispersed without aggregate protection) and three primary forests (PF) stands as control sites (4 treatments x 3 areas x 6 replicates x 17 years). Values of occurrences of climatic events (positive or negative values of ENSO and SAM) were related to monthly temperature and rainfall. ANOVAs, correlation analyses and statistical modelling were performed to predict SP based on climatic variables and forest treatments. Results: Seed production varied over years and among forest treatments depending on annual climate variations, with annual averages for the studied period of: 9.35 million ha-1 year-1 for PF, 7.16 million ha-1 year-1 for AR, 2.25 million ha-1 year-1 for DRI and 1.08 million ha-1 year-1 for DR. ENSO+ and SAM+ acted as a trigger of high SP, associated to higher temperatures and dry conditions, mainly during spring and summer. The models predicted SP explaining 73-85% of its variability, considering minimum and maximum temperatures and ENSO mean values as better predictors. Conclusions: Findings presented in this study have important implications for forest management as a tool for
understanding forest dynamics related to seeding, a key factor for forest regeneration in a context of high climate variability. However, within a context of climate change with extreme events, there is a need for long-term monitoring of seeding processes in Nothofagus forests. |
| format | Artículo |
| id | INTA18832 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | SCION |
| publisherStr | SCION |
| record_format | dspace |
| spelling | INTA188322024-08-07T10:56:20Z Climate influence seed production in managed and unmanaged Nothofagus pumilio forests of Southern Patagonia Rodríguez‑Souilla, Julián Cellini, Juan Manuel Roig Junent, Fidel Alejandro Lencinas, María Vanessa Chaves, Jimena Elizabeth Aravena Acuña, Marie Claire Peri, Pablo Luis Martínez Pastur, Guillermo José Primary Forests Seed Production Forestry Harvesting Sustainable Forest Management Bosques Primarios Nothofagus pumilio Producción de Semillas Ciencia Forestal Cosecha Ordenación Forestal Sostenible Tierra del Fuego Variable Retention Forest Dynamics Climate Drivers El Niño-Southern Oscillation (ENSO) Southern Annular Mode (SAM) Retención Variable Dinámica Forestal Impulsores Climáticos El Niño-Oscilación del Sur (ENSO) Modo Anular Sur (SAM) Región Patagónica Background: Annual seed production is key to understand natural forest dynamics and to apply sustainable forest management. This process is subjected to variations according to annual and seasonal climatic conditions, locally affected by El Niño-Southern Oscillation (ENSO) and the Southern Annular Mode (SAM) seasonality. Recognising how these variables affect the dynamics of harvested forests is useful for developing forest management strategies. Therefore, the objective of this study was to analyse annual seed production (SP) in Nothofagus pumilio (Poepp. & Endl.) Krasser stands harvested under variable retention and unmanaged primary forests in Tierra del Fuego, Argentina, related to the occurrence of climatic events over a 17-year period (2006-2022). Methods: Seed production (million ha-1 year-1) was annually measured in three managed stands with different retention levels (AR: aggregates; DRI: dispersed with aggregate protection; DR: dispersed without aggregate protection) and three primary forests (PF) stands as control sites (4 treatments x 3 areas x 6 replicates x 17 years). Values of occurrences of climatic events (positive or negative values of ENSO and SAM) were related to monthly temperature and rainfall. ANOVAs, correlation analyses and statistical modelling were performed to predict SP based on climatic variables and forest treatments. Results: Seed production varied over years and among forest treatments depending on annual climate variations, with annual averages for the studied period of: 9.35 million ha-1 year-1 for PF, 7.16 million ha-1 year-1 for AR, 2.25 million ha-1 year-1 for DRI and 1.08 million ha-1 year-1 for DR. ENSO+ and SAM+ acted as a trigger of high SP, associated to higher temperatures and dry conditions, mainly during spring and summer. The models predicted SP explaining 73-85% of its variability, considering minimum and maximum temperatures and ENSO mean values as better predictors. Conclusions: Findings presented in this study have important implications for forest management as a tool for understanding forest dynamics related to seeding, a key factor for forest regeneration in a context of high climate variability. However, within a context of climate change with extreme events, there is a need for long-term monitoring of seeding processes in Nothofagus forests. EEA Santa Cruz 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; Argentina. Fil: Roig Junent, Fidel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA); Argentina. Fil: Roig Junent, Fidel Alejandro. Universidad Mayor. Hémera Centro de Observación de la Tierra; Chile. Fil: Lencinas, María Vanessa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas (CADIC); Argentina. 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: 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. 2024-08-07T10:45:51Z 2024-08-07T10:45:51Z 2024-07-24 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/18832 https://nzjforestryscience.nz/index.php/nzjfs/article/view/295 Rodríguez-Souilla J.; Cellini J.M.; Roig F.A.; Lencinas M.V.; Chaves J.E.; Aravena Acuña M.C.; Peri P.L.; Martínez Pastur G. (2024) Climate influence seed production in managed and unmanaged Nothofagus pumilio forests of Southern Patagonia. New Zealand Journal of Forestry Science 54: e13. https://doi.org/10.33494/nzjfs542024x295x 1179-5395 https://doi.org/10.33494/nzjfs542024x295x 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 : e13. (2024) |
| spellingShingle | Primary Forests Seed Production Forestry Harvesting Sustainable Forest Management Bosques Primarios Nothofagus pumilio Producción de Semillas Ciencia Forestal Cosecha Ordenación Forestal Sostenible Tierra del Fuego Variable Retention Forest Dynamics Climate Drivers El Niño-Southern Oscillation (ENSO) Southern Annular Mode (SAM) Retención Variable Dinámica Forestal Impulsores Climáticos El Niño-Oscilación del Sur (ENSO) Modo Anular Sur (SAM) Región Patagónica Rodríguez‑Souilla, Julián Cellini, Juan Manuel Roig Junent, Fidel Alejandro Lencinas, María Vanessa Chaves, Jimena Elizabeth Aravena Acuña, Marie Claire Peri, Pablo Luis Martínez Pastur, Guillermo José Climate influence seed production in managed and unmanaged Nothofagus pumilio forests of Southern Patagonia |
| title | Climate influence seed production in managed and unmanaged Nothofagus pumilio forests of Southern Patagonia |
| title_full | Climate influence seed production in managed and unmanaged Nothofagus pumilio forests of Southern Patagonia |
| title_fullStr | Climate influence seed production in managed and unmanaged Nothofagus pumilio forests of Southern Patagonia |
| title_full_unstemmed | Climate influence seed production in managed and unmanaged Nothofagus pumilio forests of Southern Patagonia |
| title_short | Climate influence seed production in managed and unmanaged Nothofagus pumilio forests of Southern Patagonia |
| title_sort | climate influence seed production in managed and unmanaged nothofagus pumilio forests of southern patagonia |
| topic | Primary Forests Seed Production Forestry Harvesting Sustainable Forest Management Bosques Primarios Nothofagus pumilio Producción de Semillas Ciencia Forestal Cosecha Ordenación Forestal Sostenible Tierra del Fuego Variable Retention Forest Dynamics Climate Drivers El Niño-Southern Oscillation (ENSO) Southern Annular Mode (SAM) Retención Variable Dinámica Forestal Impulsores Climáticos El Niño-Oscilación del Sur (ENSO) Modo Anular Sur (SAM) Región Patagónica |
| url | http://hdl.handle.net/20.500.12123/18832 https://nzjforestryscience.nz/index.php/nzjfs/article/view/295 https://doi.org/10.33494/nzjfs542024x295x |
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