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A comparison of five methods to assess embolism resistance in trees
Sergent, Anne Sophie; Varela, Santiago Agustin; Barigah, T.S.; Badel, E.; Cochard, H.; Dalla Salda, Guillermina; Delzon, S.; Fernandez, María Elena; Guillemont, J.; Gyenge, Javier; Lamarque, L.J.; Martinez Meier, Alejandro; Rozenberg, P.; Torres Ruiz, J.M; Martin St Paul, N.K. (Elsevier, 2020-04)Vulnerability to drought-induced embolism is a key trait that shapes drought resistance and that could be increasingly used to design climate-smart forest management guidelines and to anticipate the outcome of climate ... -
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 ... -
Bases fisiológicas del crecimiento diferencial en la fase inicial del desarrollo de dos progenies de Pinus taeda bajo condiciones de campo, en Misiones Argentina
Bulfe, Nardia María; Faustino, Laura Ines; Pinazo, Martin Alcides; Graciano, Corina; Fernandez, María Elena (2016)Para contribuir al conocimiento de caracteres ecofisiológicos útiles en la selección de genotipos aptos para ciertas áreas ecológicas, en el contexto de cambio climático, el objetivo del presente trabajo fue evaluar ... -
Comparación de metodologías para la estimación de la densidad de la madera y sus implicancias en la estimación de parámetros genéticos en tres especies del género Eucalyptus
Alarcón, Pamela Cecilia; Fernandez, María Elena; Pathauer, Pablo Santiago; Harrand, Leonel; Oberschelp, Gustavo Pedro Javier; Monteoliva, Silvia Estela; Martinez Meier, Alejandro (Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, 2018)Entre las diversas características que definen la calidad de la madera, la densidad es el descriptor que ha cobrado mayor relevancia. En vista a la variedad de métodos disponibles para estimar la densidad básica, de la ... -
Densidad de la madera como variable integradora de la anatomía del leño: análisis de ramas y fuste en cuatro especies de Eucalyptus = Wood density as an integrating variable of wood anatomy: analysis of branches and stem in four species of Eucalyptus
Monteoliva, Silvia Estela; Barotto, Antonio José; Alarcón, Pamela Cecilia; Teson, Natalia; Fernandez, María Elena (Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales, 2017)El objetivo del presente trabajo fue determinar la relación entre densidad aparente normal y la anatomía del xilema de ramas terminales y de tronco de cuatro especies de Eucalyptus L´Hér. (Myrtaceae) de importancia comercial, ... -
Drought stress tolerance of Prosopis chilensis and Prosopis flexuosa species and their hybrids
Lopez Lauenstein, Diego; Fernandez, María Elena; Verga, Anibal (Springer, 2013-02)Natural hybridization commonly produces individuals with intermediate morphological and genetic characteristics, but their response to environmental stress is still uncertain, with some studies showing that transgressive ... -
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- ... -
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 combined stress (salinity + hypoxia) and auxin rooting hormone addition on morphology and growth traits in six Salix spp. Clones
Quiñones Martorello, Adriana; Fernandez, María Elena; Monterubbianesi, María Gloria; Colabelli, Mabel Noemí; Laclau, Pablo; Gyenge, Javier (Springer Nature, 2019-04-15)Willows plantations development could be an alternative for hydro-halomorphic soils but it is limited by combined stress salinity + hypoxia (main stressor under waterlogging conditions). We studied the effects of saline ... -
Effect of stand density and pruning on growth of ponderosa pines in NW Patagonia, Argentina
Gyenge, Javier Enrique; Fernandez, María Elena; Schlichter, Tomas (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 ... -
Effects of the time of drought occurrence within the growing season on growth and survival of Pinus ponderosa seedlings
Fernandez, María Elena; Gyenge, Javier; Varela, Santiago Agustin; De Urquiza, Maria Mercedes (2014-06)Although there is certainty about the increasing frequency of extreme climatic events, the consequences of changing patterns of drought events within the growing season on the growth and survival of different species are ... -
Functional relationships between wood structure and vulnerability to xylem cavitation in races of Eucalyptus globulus differing in wood density
Barotto, Antonio José; Monteoliva, Silvia Estela; Gyenge, Javier; Martinez Meier, Alejandro; Fernandez, María Elena (Oxford University Press, 2018-02)Wood density can be considered as a measure of the internal wood structure, and it is usually used as a proxy measure of other mechanical and functional traits. Eucalyptus is one of the most important commercial forestry ... -
High methane uptake from soils of low and high density radiata pine afforestations compared to herbaceous systems
De Bernardi, María; Priano, María Eugenia; Fusé, Victoria; Fernandez, María Elena; Gyenge, Javier; Guzmán, Sergio; Julianera, María (Taylor and Francis, 2020-03-26)During a one-year period, methane (CH4) fluxes from soil were studied in a southern temperate region system using a static chamber technique. Four treatments on neighboring areas with similar environmental characteristics ... -
Influence of growth dominance and individual tree growth efficiency on Pinus taeda stand growth. A contribution to the debate about why stands productivity declines
Fernandez Tschieder, Ezequiel; Fernandez, María Elena; Schlichter, Tomas Miguel; Pinazo, Martin Alcides; Crechi, Ernesto Hector (Elsevier, 2012-08)A well recognized pattern during even-aged stands development is the growth decline after reaching a peak. We studied the effect of changes in stand structure, characterized by growth dominance, upon stand growth, stand ... -
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 (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 ... -
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 (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 ... -
Morpho-physiological response to drought of progenies of Pinus taeda L. contrasting in mean growth rate
Bulfe, Nardia María; Fernandez, María Elena (2016)Posibles compensaciones entre el crecimiento y la resistencia a estrés hídrico en Pinus taeda. Se evaluaron L. familias y los procesos ecofisiológicos involucrados. Las familias de alta (HG) y la baja tasa de crecimiento ...