Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina = Aclimatación morfo-fisiológica durante el establecimiento de Araucaria angustifolia bajo cobertura de canopeo en el Bosque Atlántico, Argentina
Araucaria angustifolia is an ecologically and commercially important species of the Atlantic Forest. However, its ability to regenerate continuously under the shade of the canopy in the rainforest is uncertain. The aims were: to evaluate the morpho-physiological responses of araucaria to different i...
| Autores principales: | , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile
2021
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/9907 http://revistas.uach.cl/index.php/bosque/article/view/5968 https://doi.org/10.4067/S0717-92002019000300323 |
| _version_ | 1855036297332129792 |
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| author | Olguin, Flavia Y. Moretti, Ana Paula Pinazo, Martin Alcides Graciano, Corina |
| author_browse | Graciano, Corina Moretti, Ana Paula Olguin, Flavia Y. Pinazo, Martin Alcides |
| author_facet | Olguin, Flavia Y. Moretti, Ana Paula Pinazo, Martin Alcides Graciano, Corina |
| author_sort | Olguin, Flavia Y. |
| collection | INTA Digital |
| description | Araucaria angustifolia is an ecologically and commercially important species of the Atlantic Forest. However, its ability to regenerate continuously under the shade of the canopy in the rainforest is uncertain. The aims were: to evaluate the morpho-physiological responses of araucaria to different intensities of canopy coverage to know its shade acclimation capacity; and to evaluate survival and growth under different shade intensities in gaps. First, seedlings were grown in pots at full sun or under canopy shade and morpho-physiological traits were measured after 6 and 12 months. Survival was 100 % under full sun and 40 % under shade. One year after planting, the ability to use high-intensity light was similar in plants under both conditions, although shade plants did not grow and showed little capacity to acclimate to shade. Plants under full sun duplicated their size in six months and had higher capacity to deliver water to the leaves. However, shade plants had higher specific hydraulic conductance. After that, in a field experiment, seedlings were planted in six forest-gaps to record survival and growth for 30 months. Survival was high in all positions within the gaps. In the center of the gaps, where incident radiation was higher, growth was higher. We conclude that araucaria has low ability to acclimate to low radiation, nevertheless, it can survive at least 30 months under the canopy. Consequently, araucaria should not be planted below dense canopy shade. The microenvironment in the center of 195-293 m2 gaps is proper for araucaria growth. |
| format | info:ar-repo/semantics/artículo |
| id | INTA9907 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile |
| publisherStr | Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile |
| record_format | dspace |
| spelling | INTA99072021-07-28T14:45:45Z Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina = Aclimatación morfo-fisiológica durante el establecimiento de Araucaria angustifolia bajo cobertura de canopeo en el Bosque Atlántico, Argentina Olguin, Flavia Y. Moretti, Ana Paula Pinazo, Martin Alcides Graciano, Corina Araucaria angustifolia Morfología Vegetal Bosque Húmedo Estrés Abiótico Sombra Plant Morphology Rain Forests Abiotic Stress Shade Bosque Atlántico, Misiones Canopeo Canopy Araucaria angustifolia is an ecologically and commercially important species of the Atlantic Forest. However, its ability to regenerate continuously under the shade of the canopy in the rainforest is uncertain. The aims were: to evaluate the morpho-physiological responses of araucaria to different intensities of canopy coverage to know its shade acclimation capacity; and to evaluate survival and growth under different shade intensities in gaps. First, seedlings were grown in pots at full sun or under canopy shade and morpho-physiological traits were measured after 6 and 12 months. Survival was 100 % under full sun and 40 % under shade. One year after planting, the ability to use high-intensity light was similar in plants under both conditions, although shade plants did not grow and showed little capacity to acclimate to shade. Plants under full sun duplicated their size in six months and had higher capacity to deliver water to the leaves. However, shade plants had higher specific hydraulic conductance. After that, in a field experiment, seedlings were planted in six forest-gaps to record survival and growth for 30 months. Survival was high in all positions within the gaps. In the center of the gaps, where incident radiation was higher, growth was higher. We conclude that araucaria has low ability to acclimate to low radiation, nevertheless, it can survive at least 30 months under the canopy. Consequently, araucaria should not be planted below dense canopy shade. The microenvironment in the center of 195-293 m2 gaps is proper for araucaria growth. Araucaria angustifolia (araucaria) es una especie del Bosque Atlántico de importancia ecológica y comercial, pero su capacidad para regenerar continuamente bajo dosel es incierta. Los objetivos fueron: evaluar la respuesta morfo-fisiológica de araucaria a diferentes intensidades de cobertura de dosel para conocer su capacidad de aclimatación; y evaluar supervivencia y crecimiento bajo diferentes niveles de cobertura durante su establecimiento en claros del Bosque Atlántico. En experimentos en maceta, plantas jóvenes fueron expuestas a sol pleno y bajo sombra del dosel y se hicieron mediciones morfo-fisiológicas seis y 12 meses después de plantadas. La supervivencia fue 100 % a sol pleno y 40 % bajo sombra. Un año luego de plantar, las plantas tuvieron similar capacidad para usar luz de alta intensidad, pero bajo sombra no crecieron y demostraron baja capacidad de aclimatación a la sombra. Las plantas a sol pleno duplicaron su tamaño en seis meses y presentaron mayor capacidad para conducir agua hacia las hojas. Las plantas bajo sombra presentaron mayor conductividad hidráulica específica. En experimento a campo se plantó araucaria en seis claros del bosque y se registró supervivencia y crecimiento durante 30 meses. La supervivencia fue alta y no se asoció a la posición de las plantas dentro del claro. Los mayores crecimientos se registraron en el centro de los claros. Araucaria tuvo poca capacidad para aclimatarse a bajas radiaciones, pero pudo sobrevivir al menos durante 30 meses. Consecuentemente, no se recomienda su plantación bajo dosel denso. El microambiente en el centro de claros de 195 a 293 m2 fue adecuado para el crecimiento de araucaria. EEA Montecarlo Fil: Olguin, Flavia Y. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal; Argentina Fil: Olguin, Flavia Y. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina Fil: Moretti, Ana Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal; Argentina Fil: Moretti, Ana Paula. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina Fil: Pinazo, Martin Alcides. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; Argentina Fil: Graciano, Corina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal; Argentina Fil: Graciano, Corina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina. 2021-07-28T14:39:33Z 2021-07-28T14:39:33Z 2019 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/9907 http://revistas.uach.cl/index.php/bosque/article/view/5968 0717-9200 https://doi.org/10.4067/S0717-92002019000300323 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 Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile Bosque (Valdivia) 40 (3) : 323-333. (2019) |
| spellingShingle | Araucaria angustifolia Morfología Vegetal Bosque Húmedo Estrés Abiótico Sombra Plant Morphology Rain Forests Abiotic Stress Shade Bosque Atlántico, Misiones Canopeo Canopy Olguin, Flavia Y. Moretti, Ana Paula Pinazo, Martin Alcides Graciano, Corina Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina = Aclimatación morfo-fisiológica durante el establecimiento de Araucaria angustifolia bajo cobertura de canopeo en el Bosque Atlántico, Argentina |
| title | Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina = Aclimatación morfo-fisiológica durante el establecimiento de Araucaria angustifolia bajo cobertura de canopeo en el Bosque Atlántico, Argentina |
| title_full | Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina = Aclimatación morfo-fisiológica durante el establecimiento de Araucaria angustifolia bajo cobertura de canopeo en el Bosque Atlántico, Argentina |
| title_fullStr | Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina = Aclimatación morfo-fisiológica durante el establecimiento de Araucaria angustifolia bajo cobertura de canopeo en el Bosque Atlántico, Argentina |
| title_full_unstemmed | Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina = Aclimatación morfo-fisiológica durante el establecimiento de Araucaria angustifolia bajo cobertura de canopeo en el Bosque Atlántico, Argentina |
| title_short | Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina = Aclimatación morfo-fisiológica durante el establecimiento de Araucaria angustifolia bajo cobertura de canopeo en el Bosque Atlántico, Argentina |
| title_sort | morpho physiological acclimation to canopy coverage of araucaria angustifolia during the establishment in the atlantic forest argentina aclimatacion morfo fisiologica durante el establecimiento de araucaria angustifolia bajo cobertura de canopeo en el bosque atlantico argentina |
| topic | Araucaria angustifolia Morfología Vegetal Bosque Húmedo Estrés Abiótico Sombra Plant Morphology Rain Forests Abiotic Stress Shade Bosque Atlántico, Misiones Canopeo Canopy |
| url | http://hdl.handle.net/20.500.12123/9907 http://revistas.uach.cl/index.php/bosque/article/view/5968 https://doi.org/10.4067/S0717-92002019000300323 |
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