Why do Pinus species have different growth dominance patterns than Eucalyptus species? A hypothesis based on differential physiological plasticity
It has been observed that Eucalyptus stands show high growth dominance levels while Pinus stands show null or low growth dominance levels. We hypothesized that this differential behaviour is linked to a higher degree of physiological–biochemical plasticity in Eucalyptus than in Pinus species related...
| Autores principales: | , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Elsevier
2019
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| Materias: | |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S0378112710007310 http://hdl.handle.net/20.500.12123/5072 https://doi.org/10.1016/j.foreco.2010.12.028 |
| _version_ | 1855483549317070848 |
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| author | Fernandez, María Elena Fernandez Tschieder, Ezequiel Letourneau, Federico Jorge Gyenge, Javier |
| author_browse | Fernandez Tschieder, Ezequiel Fernandez, María Elena Gyenge, Javier Letourneau, Federico Jorge |
| author_facet | Fernandez, María Elena Fernandez Tschieder, Ezequiel Letourneau, Federico Jorge Gyenge, Javier |
| author_sort | Fernandez, María Elena |
| collection | INTA Digital |
| description | It has been observed that Eucalyptus stands show high growth dominance levels while Pinus stands show null or low growth dominance levels. We hypothesized that this differential behaviour is linked to a higher degree of physiological–biochemical plasticity in Eucalyptus than in Pinus species related to photosynthetic capacity. This leads to an increment in growth efficiency (GE) difference between the largest and the smallest trees of a stand, and therefore to high growth dominance levels in Eucalyptus. To test our hypothesis we carried out a bibliographical survey and reanalyzed data from Pinus ponderosa and Pinus taeda plantations in Argentina. We found that some species within the genus Eucalyptus present higher growth dominance levels, physiological plasticity and GE differentiation than Pinus species. The mean maximum values of these traits reported for any Eucalyptus species were: growth dominance coefficient, 0.48; photosynthetic capacity increment when resource availability increases, 175%; GE difference between the largest and the smallest trees of a stand, 300%. Mean maximum values for the same traits reported for any Pinus species were 0.13, no phostosynthetic plasticity as the most frequent pattern, and 51%, respectively. In Pinus species the most frequent response to an increase in resource availability is characterized by an increase in leaf area or biomass, maintaining a similar photosynthetic capacity per unit area. However, it appears that in P. ponderosa there are some situations, characterized by a high degree of intraspecific competition, leading to a very high degree of GE differentiation which deserve future research. Although we did not find any study reporting simultaneously all variables concerning our hypothesis (growth dominance, growth efficiency differentiation and physiological plasticity) any of the circumstantial evidence found in the bibliography contrasts our hypothesis. |
| format | Artículo |
| id | INTA5072 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA50722019-05-08T13:45:23Z Why do Pinus species have different growth dominance patterns than Eucalyptus species? A hypothesis based on differential physiological plasticity Fernandez, María Elena Fernandez Tschieder, Ezequiel Letourneau, Federico Jorge Gyenge, Javier Pinus Eucalyptus Plasticidad Fenotípica Crecimiento Variedades Phenotypic Plasticity Growth Varieties It has been observed that Eucalyptus stands show high growth dominance levels while Pinus stands show null or low growth dominance levels. We hypothesized that this differential behaviour is linked to a higher degree of physiological–biochemical plasticity in Eucalyptus than in Pinus species related to photosynthetic capacity. This leads to an increment in growth efficiency (GE) difference between the largest and the smallest trees of a stand, and therefore to high growth dominance levels in Eucalyptus. To test our hypothesis we carried out a bibliographical survey and reanalyzed data from Pinus ponderosa and Pinus taeda plantations in Argentina. We found that some species within the genus Eucalyptus present higher growth dominance levels, physiological plasticity and GE differentiation than Pinus species. The mean maximum values of these traits reported for any Eucalyptus species were: growth dominance coefficient, 0.48; photosynthetic capacity increment when resource availability increases, 175%; GE difference between the largest and the smallest trees of a stand, 300%. Mean maximum values for the same traits reported for any Pinus species were 0.13, no phostosynthetic plasticity as the most frequent pattern, and 51%, respectively. In Pinus species the most frequent response to an increase in resource availability is characterized by an increase in leaf area or biomass, maintaining a similar photosynthetic capacity per unit area. However, it appears that in P. ponderosa there are some situations, characterized by a high degree of intraspecific competition, leading to a very high degree of GE differentiation which deserve future research. Although we did not find any study reporting simultaneously all variables concerning our hypothesis (growth dominance, growth efficiency differentiation and physiological plasticity) any of the circumstantial evidence found in the bibliography contrasts our hypothesis. EEA Bariloche Fil: Fernandez, María Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Fernandez Tschieder, Ezequiel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Delta del Paraná; Argentina Fil: Letourneau, Federico Jorge. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Campo Forestal General San Martín; Argentina Fil: Gyenge, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina 2019-05-08T13:42:18Z 2019-05-08T13:42:18Z 2011-03-15 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0378112710007310 http://hdl.handle.net/20.500.12123/5072 0378-1127 https://doi.org/10.1016/j.foreco.2010.12.028 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Forest Ecology and Management 261 (6) : 1061-1068 (March 2011) |
| spellingShingle | Pinus Eucalyptus Plasticidad Fenotípica Crecimiento Variedades Phenotypic Plasticity Growth Varieties Fernandez, María Elena Fernandez Tschieder, Ezequiel Letourneau, Federico Jorge Gyenge, Javier Why do Pinus species have different growth dominance patterns than Eucalyptus species? A hypothesis based on differential physiological plasticity |
| title | Why do Pinus species have different growth dominance patterns than Eucalyptus species? A hypothesis based on differential physiological plasticity |
| title_full | Why do Pinus species have different growth dominance patterns than Eucalyptus species? A hypothesis based on differential physiological plasticity |
| title_fullStr | Why do Pinus species have different growth dominance patterns than Eucalyptus species? A hypothesis based on differential physiological plasticity |
| title_full_unstemmed | Why do Pinus species have different growth dominance patterns than Eucalyptus species? A hypothesis based on differential physiological plasticity |
| title_short | Why do Pinus species have different growth dominance patterns than Eucalyptus species? A hypothesis based on differential physiological plasticity |
| title_sort | why do pinus species have different growth dominance patterns than eucalyptus species a hypothesis based on differential physiological plasticity |
| topic | Pinus Eucalyptus Plasticidad Fenotípica Crecimiento Variedades Phenotypic Plasticity Growth Varieties |
| url | https://www.sciencedirect.com/science/article/pii/S0378112710007310 http://hdl.handle.net/20.500.12123/5072 https://doi.org/10.1016/j.foreco.2010.12.028 |
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