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Mostrando ítems 1-20 de 26
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Analyse rétrospective de l’adaptation à la sécheresse chez le douglas
Rozenberg, Philippe; Sergent, Anne Sophie; Dalla Salda, Guillermina; Martinez Meier, Alejandro; Marin, Sara; Ruiz Diaz, Manuela; Bastien, Jean-Charles; Sanchez, Leopoldo; Bréda, Nathalie (Swiss Forestry Society and Allen Press, 2012-03)For a number of years in certain regions of France the Douglas-fir trees (Pseudotsuga menziesii [Mirb.] Franco) have presented symptoms of withering which have been attributed to drought. Our results show that the hydraulic ... -
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 ... -
Climate warming differently affects Larix decidua ring formation at each end of a French Alps elevational gradient
Rozenberg, Philippe; Chauvin, Thibaud; Escobar-Sandoval, Margarita; Huard, Frédéric; Shishov, Vladimir; Charpentier, Jean-Paul; Sergent, Anne Sophie; Vargas-Hernandez, José Jesus; Martinez Meier, Alejandro; Pâques, Luc (Springer, 2020-06)Key message The ongoing global warming tends to reduce Larix decidua radial growth and ring wood density at the bottom of an elevational gradient in the French Alps, while it has a less marked effect at the top. Context: ... -
Climate warming differently affects Larix decidua ring formation at each end of a French Alps elevational gradient.
Rozenberg, Philippe; Chauvin, Thibaud; Escobar-Sandoval, Margarita; Huard, Frédéric; Shishov, Vladimir; Charpentier, Jean-Paul; Sergent, Anne Sophie Marie; Vargas-Hernandez, J. Jesus; Martinez Meier, Alejandro; Pâques, Luc (Springer, 2020)Key message: The ongoing global warming tends to reduce Larix decidua radial growth and ring wood density at the bottom of an elevational gradient in the French Alps, while it has a less marked effect at the top. Context: ... -
Dissecting the Space-Time Structure of Tree-Ring Datasets Using the Partial Triadic Analysis
Rossi, Jean Pierre; Nardin, Maxime; Godefroid, Martin; Ruiz Diaz, Manuela; Sergent, Anne Sophie; Martinez Meier, Alejandro; Paques, Luc; Rozenberg, Philippe (Plos One, 2014-09)Tree-ring datasets are used in a variety of circumstances, including archeology, climatology, forest ecology, and wood technology. These data are based on microdensity profiles and consist of a set of tree-ring descriptors, ... -
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- ... -
Enhanced high-spatial resolution radiographic images based on COTS CMOS image sensors applied to wood dendrochronology and densitometry
Corzi, Damian Leonel; Lipovetzky, Jose; Alcalde Bessia, Fabricio Pablo; Baqué, Laura; Sergent, Anne Sophie Marie; Pérez, Martín; Sofo Haro, Miguel; Artola Vinciguerra, Ignacio Carlos; Martinez Meier, Alejandro; Dalla Salda, Guillermina; Varela, Santiago Agustin; Gómez Berisso, Mariano (Elsevier, 2024-03)The imaging of wood samples using X-rays for the study of dendrochronology and densitometry is predominantly conducted through analog films subsequently digitized or, in more advanced instances, with expensive flat-panel ... -
Evaluación de daños por heladas tardías en ensayos de procedencias de pino oregón introducidos en el norte de la Región Andino Patagónica Argentina
Martinez Meier, Alejandro; Mondino, Victor Alejandro; Gallo, Leonardo Ariel (Universidad Austral de Chile, 2005-12)The susceptibility to late frost of the seed source used for afforestations at the moment it is one of the main adaptatives characteristic limiting the increase of the planted area of Douglas-fir (Pseudotsuga menziesii ... -
Genetic control of the tree-ring response of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) to the 2003 drought and heat-wave in France
Martinez Meier, Alejandro; Sanchez, Leopoldo; Dalla Salda, Guillermina; Pastorino, Mario Juan; Gautry, Jean-Yves; Gallo, Leonardo Ariel; Rozenberg, Philippe (Springer, 2008)The genetic control of tree ring growth in Douglas-fir in response to the drought and heat-wave that occurred in 2003 in Europe was studied with microdensity profiles in three clonal experiments located in three different ... -
Genetic variation of xylem hydraulic properties shows that wood density is involved in adaptation to drought in Douglas-fir (Pseudotsuga menziesii (Mirb.))
Dalla Salda, Guillermina; Martinez Meier, Alejandro; Cochard, Hervé; Rozenberg, Philippe (Springer, 2011-05)Relationships between wood density and hydraulic efficiency and safety (hydraulic specific conductivity and vulnerability to cavitation, respectively) could clarify the physiological process explaining the impact of density ... -
Heritable variation in the survival of seedlings from Patagonian cypress marginal xeric populations coping with drought and extreme cold
Aparicio, Alejandro Gabriel; Zuki, Sebastián Maximiliano; Pastorino, Mario Juan; Martinez Meier, Alejandro; Gallo, Leonardo Ariel (Springer, 2012-01)The rear edges of tree species have begun to be perceived as highly valuable for genetic resources conservation and management. In view of expected climatic changes, the responses of trees at their xeric limits may largely ... -
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 ... -
Mitochondrial DNA lineages and genetic variation of early growth traits in the Argentinean breeding population of Pinus ponderosa Douglas ex C. Lawson
Aparicio, Alejandro Gabriel; El Mujtar, Veronica Andrea; Azpilicueta, Maria Marta; Martinez Meier, Alejandro; Mondino, Victor Alejandro (Springer, 2024-03)In the Andean-Patagonian region of Argentina, Pinus ponderosa Douglas ex C. Lawson is the most widely cultivated forest tree species. Its breeding program, started in 1998, is now progressing towards the establishment of ... -
Phenotypic plasticity of European larch radial growth and wood density along a-1,000 m elevational gradient
Escobar Sandoval, Margarita; Pâques, Luc; Fonti, Patrick; Martinez Meier, Alejandro; Rozenberg, Philippe (Wiley, 2021-02)Phenotypic plasticity is a key mechanism for sedentary long-living species to adjust to changing environment. Here, we use mature Larix decidua tree-ring variables collected along an elevational transect in the French Alps ... -
Phenotypic variation of basic wood density in Pinus ponderosa plus trees = Variación fenotípica de la densidad básica de la madera de árboles plus de Pinus ponderosa
Martinez Meier, Alejandro; Gallo, Leonardo Ariel; Pastorino, Mario Juan; Mondino, Victor Alejandro; Rozenberg, Philippe (Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2011)Phenotypic selection generally reduces the variability of both the selected trait and other associated characteristics. Some species show a negative strong relationship between growth traits and wood ... -
Receta práctica paso a paso para construir dendrómetros de punto de bajo costo
Diez, Juan Pablo; De Paz, Manuel; Varela, Santiago Agustin; Dalla Sald, Guillermina; Sergent, Anne Sophie; Martinez Meier, Alejandro (Asociación Argentina de Ecología, 2020-08)Los dendrómetros automáticos de punto son equipos de medición que se usan en la actividad forestal para medir en alta resolución espacial y temporal las variaciones en el fuste de los árboles. Esta información con gran ... -
Ring density record of phenotypic plasticity and adaptation to drought in Douglas-fir
Martinez Meier, Alejandro; Sanchez, Leopoldo; Dalla Salda, Guillermina; Gallo, Leonardo Ariel; Pastorino, Mario Juan; Rozenberg, Philippe (Elsevier, 2009-08)Microdensity profiles of Douglas-fir’s clones and weather data were used to study phenotypic plasticity (dendroplasticity). Within-ring microdensity was interpreted as the variation of tree response to drought constraints ... -
Robles in Lagunas de Epulauquen, Argentina: previous and recent evidence of their distinctive character
Azpilicueta, Maria Marta; Pastorino, Mario Juan; Puntieri, Javier Guido; Barbero, Fernando Alvaro; Martinez Meier, Alejandro; Marchelli, Paula; Gallo, Leonardo Ariel (2014-12)The northernmost ‘robles’ of Argentina, located in Lagunas de Epulauquen (northwest Patagonia), are considered a population of Nothofagus obliqua, even though they differ in some respects from individuals of other populations ... -
Seed dormancy responses to temperature relate to Nothofagus species distribution and determine temporal patterns of germination across altitudes in Patagonia
Arana, María Verónica; Gonzalez Polo, Marina; Martinez Meier, Alejandro; Gallo, Leonardo Ariel; Benech-Arnold, Roberto Luis; Sanchez, Rodolfo Augusto; Batlla, Diego (2015-08-26)Seeds integrate environmental cues that modulate their dormancy and germination. Although many mechanisms have been identified in laboratory experiments, their contribution to germination dynamics in existing communities ...