Stand density and drought interaction on water relations of Nothofagus antarctica : contribution of forest management to climate change adaptability
Nothofagus antarctica is the most representative species of the native mixed forest occupying ecotone areas between forests and steppe in NW Patagonia, South-America. In this type of environment, vulnerability to climate change is particularly enhanced. Predictions of future climatic conditions for...
| Autores principales: | , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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2017
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/1586 https://link.springer.com/article/10.1007/s00468-011-0586-2 https://doi.org/10.1007/s00468-011-0586-2 |
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| author | Gyenge, Javier Enrique Fernandez, María Elena Sarasola, Mauro Miguel Schlichter, Tomas Miguel |
| author_browse | Fernandez, María Elena Gyenge, Javier Enrique Sarasola, Mauro Miguel Schlichter, Tomas Miguel |
| author_facet | Gyenge, Javier Enrique Fernandez, María Elena Sarasola, Mauro Miguel Schlichter, Tomas Miguel |
| author_sort | Gyenge, Javier Enrique |
| collection | INTA Digital |
| description | Nothofagus antarctica is the most representative species of the native mixed forest occupying ecotone areas between forests and steppe in NW Patagonia, South-America. In this type of environment, vulnerability to climate change is particularly enhanced. Predictions of future climatic conditions for this region indicate an increment of atmospheric temperature and also, a high variability of rain events, threatening forest persistence and productivity. In this framework, management strategies are crucial to guarantee sustainability of native vegetation systems. The objective of this study was to study the effect of tree density on the ecophysiological limitations of water use of N. antarctica, as a proxy to its productivity, during a drought period. Compared with the unthinned forest, the thinned forest showed higher soil water availability, higher sapflow density (Js) and canopy conductance (Gc) values, similar aerodynamic conductance (Ga) and a low degree of coupling to vapor pressure deficit. Ecophysiological results demonstrated a high limitation over gas exchange of individual N. antarctica trees imposed by the resistance in the hydraulic soil-to-leaf pathway in the unthinned-natural condition. Surprisingly, our results suggest structural limitations in the unthinned stand which reduce the ability of N. antarctica trees to take advantage of wet seasons, at least in the short term. Thinning could decrease the susceptibility of N. antarctica-based systems to drought stress, by increasing resource availability to the remaining trees, thus contributing to enhance the persistence of this species under climate change conditions. |
| format | info:ar-repo/semantics/artículo |
| id | INTA1586 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA15862021-03-09T15:57:10Z Stand density and drought interaction on water relations of Nothofagus antarctica : contribution of forest management to climate change adaptability Gyenge, Javier Enrique Fernandez, María Elena Sarasola, Mauro Miguel Schlichter, Tomas Miguel Nothofagus Arboles Maderables Timber Trees Stand Density Drought Forest Management Climate Change Densidad del Rodal Sequía Ordenación Forestal Cambio Climático Nothofagus Antarctica Nothofagus antarctica is the most representative species of the native mixed forest occupying ecotone areas between forests and steppe in NW Patagonia, South-America. In this type of environment, vulnerability to climate change is particularly enhanced. Predictions of future climatic conditions for this region indicate an increment of atmospheric temperature and also, a high variability of rain events, threatening forest persistence and productivity. In this framework, management strategies are crucial to guarantee sustainability of native vegetation systems. The objective of this study was to study the effect of tree density on the ecophysiological limitations of water use of N. antarctica, as a proxy to its productivity, during a drought period. Compared with the unthinned forest, the thinned forest showed higher soil water availability, higher sapflow density (Js) and canopy conductance (Gc) values, similar aerodynamic conductance (Ga) and a low degree of coupling to vapor pressure deficit. Ecophysiological results demonstrated a high limitation over gas exchange of individual N. antarctica trees imposed by the resistance in the hydraulic soil-to-leaf pathway in the unthinned-natural condition. Surprisingly, our results suggest structural limitations in the unthinned stand which reduce the ability of N. antarctica trees to take advantage of wet seasons, at least in the short term. Thinning could decrease the susceptibility of N. antarctica-based systems to drought stress, by increasing resource availability to the remaining trees, thus contributing to enhance the persistence of this species under climate change conditions. Fil: Gyenge, Javier Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Fernandez, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Sarasola, Mauro Miguel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Schlichter, Tomas Miguel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina 2017-10-25T14:40:15Z 2017-10-25T14:40:15Z 2011-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/1586 https://link.springer.com/article/10.1007/s00468-011-0586-2 0931-1890 (Print) 1432-2285 (Online) https://doi.org/10.1007/s00468-011-0586-2 eng info:eu-repo/semantics/restrictedAccess application/pdf Trees : structure and function 25 (6) : 1111–1120. (December 2011) |
| spellingShingle | Nothofagus Arboles Maderables Timber Trees Stand Density Drought Forest Management Climate Change Densidad del Rodal Sequía Ordenación Forestal Cambio Climático Nothofagus Antarctica Gyenge, Javier Enrique Fernandez, María Elena Sarasola, Mauro Miguel Schlichter, Tomas Miguel Stand density and drought interaction on water relations of Nothofagus antarctica : contribution of forest management to climate change adaptability |
| title | Stand density and drought interaction on water relations of Nothofagus antarctica : contribution of forest management to climate change adaptability |
| title_full | Stand density and drought interaction on water relations of Nothofagus antarctica : contribution of forest management to climate change adaptability |
| title_fullStr | Stand density and drought interaction on water relations of Nothofagus antarctica : contribution of forest management to climate change adaptability |
| title_full_unstemmed | Stand density and drought interaction on water relations of Nothofagus antarctica : contribution of forest management to climate change adaptability |
| title_short | Stand density and drought interaction on water relations of Nothofagus antarctica : contribution of forest management to climate change adaptability |
| title_sort | stand density and drought interaction on water relations of nothofagus antarctica contribution of forest management to climate change adaptability |
| topic | Nothofagus Arboles Maderables Timber Trees Stand Density Drought Forest Management Climate Change Densidad del Rodal Sequía Ordenación Forestal Cambio Climático Nothofagus Antarctica |
| url | http://hdl.handle.net/20.500.12123/1586 https://link.springer.com/article/10.1007/s00468-011-0586-2 https://doi.org/10.1007/s00468-011-0586-2 |
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