autores
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Autores
Mostrando ítems 1-20 de 26
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Adaptability to climate change in forestry species : drought effects on growth and wood anatomy of ponderosa pines growing at different competition levels
Fernandez, María Elena; Gyenge, Javier; De Urquiza, Maria Mercedes; Varela, Santiago Agustin (2012)More stressful conditions are expected due to climatic change in several regions, including Patagonia, South-America. In this region, there are no studies about the impact of severe drought events on growth and wood ... -
Afforestations and wetlands, are they a good combination? Study of water fluxes in two cases of Patagonian wetlands
Weigandt, Mariana Noemi; Gyenge, Javier; Fernandez, María Elena; Varela, Santiago Agustin; Schlichter, Tomas Miguel (Wiley, 2015-04)Wetlands are ecosystems that play a key role in maintaining biodiversity and associated economies (e.g. agriculture and livestock) because they are reservoirs of water and carbon. Globally, these environments have been ... -
Assessment of resistance to xylem cavitation in cordilleran cypress using near-infrared spectroscopy
Sergent, Anne Sophie; Segura, Vincent; Charpentier, Jean-Paul; Dalla Salda, Guillermina; Fernandez, María Elena; Rozenberg, Philippe; Martinez Meier, Alejandro (Elsevier, 2020-04)Characterizing drought resistance of forest trees is an important aim in the worldwide context of increasing forest decline and dieback. Furthermore, wood demand is increasing all around the world, urging the need for the ... -
Caracterización silvícola de ñirantales del norte de la Patagonia para la gestión forestal sostenible = Silvicultural characterization of the mixed ñire forests of northern Patagonia as a basis for sustainable forestry
Requea, José A.; Sarasola, Mauro Miguel; Gyenge, Javier; Fernandez, María Elena (Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2007-04-30)A pesar de la amplia distribución geográfica y uso de los ñirantales, son muy escasos los trabajos descriptivos sobre la silvicultura en estas comunidades forestales, centrándose principalmente en las zonas donde el ñire ... -
Does competition management improve the ecophysiological response to water shortage of mixed woodland species of North Patagonia?
Varela, Santiago Agustin; Diez, Juan Pablo; Letourneau, Federico Jorge; Bianchi, Emilio; Weigandt, Mariana Noemi; Porté, A.J.; Sergent, Anne Sophie; Nacif, Marcos E.; Garibaldi, Lucas Alejandro; Fernandez, María Elena (Elsevier, 2023-08)Globally, the increasing forests vulnerability and drought-induced forest mortality events, extended to a larger scale, may have the potential to rapidly alter forest functioning and the provision of ecosystem services. ... -
Dynamics of cavitation in a Douglas-fir tree-ring: transition-wood, the lord of the ring?
Dalla Salda, Guillermina; Fernandez, María Elena; Sergent, Anne Sophie; Rozenberg, Philippe; Badel, Eric; Martinez Meier, Alejandro (INRA, 2014-11)The objective of this work wa s to investigate the dynamics of embolism formation within a Douglas fir tree ring . Four resistant and four vulnerable 10 year old trees were selected among 50 trees, based on their P 50 . ... -
Ecophysiological basis of wood formation in ponderosa pine : linking water flux patterns with wood microdensity variables
Martinez Meier, Alejandro; Fernandez, María Elena; Dalla Salda, Guillermina; Gyenge, Javier Enrique; Licata, Julián Andrés; Rozenberg, Philippe (2015-06)Climate and stands management have an effect on the process of wood formation via resource availability. To improve knowledge of wood quantity and physical structure, increment cores of ponderosa pine were taken in high- ... -
Ecuaciones para la estimación de biomasa aérea y volumen de fuste de algunas especies leñosas nativas en el valle del río Foyel, NO de la Patagonia argentina = Equations for above-ground biomass and stem volume of some native woody species growing in Foyel valley, NW Patagonia Argentina
Gyenge, Javier; Fernandez, María Elena; Sarasola, Mauro Miguel; De Urquiza, Maria Mercedes; Schlichter, Tomas Miguel (Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2009-08-31)Los bosques y matorrales dominados por ñire (Nothofagus antarctica) se encuentran entre los ecosistemas de mayor distribución latitudinal dentro de los bosques andino patagónicos, conformando gran parte del ecotono ... -
Efecto interactivo de la defoliación del estrato herbáceo y la cobertura del estrato arbóreo sobre el crecimiento del estrato herbáceo en sistemas silvopastoriles
Caballe, Gonzalo (Facultad de Agronomía, Universidad de Buenos Aires, 2013-06)El crecimiento demográfico y las actuales y futuras consecuencias del cambio climático hacen necesario maximizar la eficiencia productiva y ambiental de los sistemas de producción agrícola. Los sistemas silvopastoriles ... -
Effect of stand density and pruning on growth of ponderosa pines in NW Patagonia, Argentina
Gyenge, Javier Enrique; Fernandez, María Elena; Schlichter, Tomas Miguel (2010-03)Due to the lack of knowledge about ponderosa pine performance under silvopastoral systems (SPS) conditions, the objective of this study was to determine the effect of stand density and pruning on the growth magnitude of ... -
Influencia del componente arbóreo sobre aspectos fisiológicos determinantes de la productividad herbácea en sistemas silvopastoriles de la Patagonia Argentina
Fernandez, María Elena (Centro Regional Universitario Bariloche, Universidad Nacional del Comahue, 2003-05)Los sistemas silvopastoriles son sistemas productivos que combinan árboles con especies herbáceas forrajeras. Al igual que en sistemas naturales donde estas dos formas de vida coexisten, en ellos se desarrollan interacciones ... -
Integrar disciplinas para el estudio de la respuesta adaptativa de los bosques al cambio climático
Sergent, Anne Sophie Marie; Dalla Salda, Guillermina; Bellon, Santiago Misael; Diez, Juan Pablo; Fernandez, María Elena; Martin-StPaul, Nicolas; Porté, Annabel; Rathgeber, Cyrille; Rozenberg, Philippe; Martinez Meier, Alejandro (Red Argentina de Ciencia y Tecnología Forestal, 2023-03)El cambio climático representa una amenaza creciente para la mayoría de los bosques alrededor del mundo (Anderegg et al. 2022). Eventos de decaimiento y de mortalidad de los bosques asociados con procesos fisiológicos de ... -
Intensity and number of thinning operations affect the response of Eucalyptus grandis to water availability and extreme drought events
Giana, Fabián Eduardo; Martinez Meier, Alejandro; Mastrandrea, Ciro Andres; Garcia, Maria De Los Angeles; Caniza, Federico Javier; Monteoliva, Silvia Estela; Gyenge, Javier; Fernandez, María Elena (Elsevier, 2023-02)Climate change has induced an increase in the frequency and intensity of droughts and heat waves, reducing growth and increasing the mortality risk of both natural and planted forests. Management practices are expected to ... -
Is forage productivity of meadows influenced by the afforestation of upstream hillsides? A study in NW Patagonia
Weigandt, Mariana Noemi; Gyenge, Javier Enrique; Fernandez, María Elena; Varela, Santiago Agustin; Schlichter, Tomas Miguel (2011)Meadows are important reserves of water, with a key role in the maintenance of the biodiversity and productivity of ecosystems. In Patagonia, Argentina, afforestation with fast-growing exotic conifers has slowly but ... -
Is forage productivity of meadows influenced by the afforestation of upstream hillsides? A study in NW Patagonia = Afecta la presencia de forestaciones ubicadas en las laderas aguas arriba de mallines su productividad forrajera? Un estudio en el Noroeste Patagónico
Weigandt, Mariana Noemi; Gyenge, Javier; Fernandez, María Elena; Varela, Santiago Agustin; Schlichter, Tomas Miguel (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), (España), 2011-04-13)Meadows are important reserves of water, with a key role in the maintenance of the biodiversity and productivity of ecosystems. In Patagonia, Argentina, afforestation with fast-growing exotic conifers has slowly but ... -
Modeling leaf maximum net photosynthetic rate of Festuca pallescens, the dominant perennial grass of Patagonian pine-based silvopastoral systems
Caballe, Gonzalo; Fernandez, María Elena; Gyenge, Javier; Aparicio, Alejandro Gabriel; Schlichter, Tomas Miguel (2011-09)The integrated relationship in a simple mechanistic model between the critical environmental factors controlling leaf photosynthesis of understory species would be a useful tool to optimize the management of the silvopastoral ... -
Physiological and morphological short-term responses to light and temperature in two Nothofagus species of Patagonia, South America
Varela, Santiago Agustin; Fernandez, María Elena; Gyenge, Javier Enrique; Aparicio, Alejandro Gabriel; Bruzzone, Octavio Augusto; Schlichter, Tomas Miguel (2012-12)The study of plant responses to environmental stress factors is essential for management of plant systems and for anticipating their response to climate change. The main goal of this study was to determine morphological ... -
¿Qué calidad de madera produciremos en el futuro?, un análisis sobre los desafíos de integrar valor adaptativo y tecnológico ante un clima cambiante
Martinez Meier, Alejandro; Sergent, Anne Sophie Marie; Dalla Salda, Guillermina; Caballe, Gonzalo; Rozenberg, Philippe; Fernandez, María Elena (EEA Bariloche, INTA, 2019-09)La madera cumple funciones de transporte y almacenamiento de agua, nutrientes y carbohidratos, fundamentales para la sobrevivencia de las especies leñosas frente a variaciones del ambiente. La densidad de la madera, una ... -
¿Qué calidad de madera produciremos en el futuro?, un análisis sobre los desafíos de integrar valor adaptativo y tecnológico ante un clima cambiante
Martinez Meier, Alejandro; Sergent, Anne Sophie Marie; Fernandez, María Elena; Dalla Salda, Guillermina; Rozenberg, Philippe; Caballe, Gonzalo (REDFOR.ar - ArgentinaForestal - CONICET, 2021)La madera cumple funciones de transporte y almacenamiento de agua, nutrientes y carbohidratos, fundamentales para la sobrevivencia de las especies leñosas frente a variaciones del ambiente. La densidad de la madera, una ... -
Resiliencia y resistencia forestal en tiempos de cambio climático
Weigandt, Mariana Noemi; Varela, Santiago Agustin; Diez, Juan Pablo; Fernandez, María Elena; Gyenge, Javier (Ediciones INTA, 2019-12)Los bosques se encuentran expuestos en la actualidad a condiciones climáticas extremas. Esto vuelve incierta su supervivencia y resalta la importancia de tomar medidas hoy para garantizarla. Aunque no sabemos con exactitud ...