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Multielemental analysis of Fraxinus pennsylvanica bark along an urban to periurban gradient in Bu... more Multielemental analysis of Fraxinus pennsylvanica bark along an urban to periurban gradient in Buenos Aires metropolis. In Buenos Aires metropolitan area a multielemental analysis of bark samples of Fraxinus pennsylvanica have been performed. The samples were analysed using ICP-OES. The resulting data have been treated by an ANOVA and by an ordination technique based on reciprocal averaging (Detrended Correspondence Analysis). The results allow us to confirm that the major contamination source is of geogenic origin with the presence of Ba, Al, Mg and Fe being principal soil components carried out by wind. Also part of these elements and the presence of Cr, Zn, Pb, Mg and Ni in the urban areas indicate anthropogenic influence and are suspected to be associated to vehicle and related economic activities. The periurban area is characterised by major values of Ba and Cu linked to the maintenance of swimming pools, fungicides and biomass combustion.
Revista del Museo Argentino de Ciencias Naturales, 2006
Journal of Arid Environments, 2009
![Research paper thumbnail of Erratum to “Plant impacts on nitrogen and carbon cycling in the Monte Phytogeographical Province, Argentina” [Journal of Arid Environments 73 (2009) 192–201]](https://attachments.academia-assets.com/120528106/thumbnails/1.jpg)
](Journal of Arid Environments, 2009
Boletín de la Sociedad Argentina de Botánica, 2019
Introducción y objetivos: La influencia de las costras biológicas (CBS) en la rugosidad del suelo... more Introducción y objetivos: La influencia de las costras biológicas (CBS) en la rugosidad del suelo es una importante función de estas comunidades a nivel ecosistémico. Nuestros objetivos fueron caracterizar microtopográficamente los tipos de CBS y evaluar su efecto en la rugosidad del suelo en tres sistemas diferenciados por su grado de aridez. M&M: El microrelieve de las CBS y su influencia en la rugosidad se evaluaron en tres sistemas: semiárido, árido, e hiperárido; mediante técnicas diferentes y complementarias: método de la cadena, análisis fotográfico y técnica de las varillas metálicas. Para la primera se empleó un diseño en bloque, mientras que paras las otras dos se trabajó sobre los tipos de CBS dominantes en cada sistema. Resultados: La morfología de las CBS varió según el tipo de organismo dominante. Los musgos tuvieron una baja altura clasificándose como “suavemente ondulados”, las cianobacterias tuvieronpicos más abruptos, clasificándose como “pinaculadas” y los líquene...
En la evaluación del impacto de la contaminación en el ambiente, existen diversas herramientas y ... more En la evaluación del impacto de la contaminación en el ambiente, existen diversas herramientas y técnicas que se aplican para conocer la calidad ambiental de los recursos naturales. El objetivo de este trabajo fue evaluar la calidad del agua en un sistema ribereño en San Luis Potosí, México asociado al impacto del uso agrícola, urbano e industrial. Fueron establecidos cinco puntos de muestreo asociado a diversos usos y descargas residuales en donde se evaluaron 28 muestras durante cuatro días de muestro. Estas fueron distribuidas a los 20, 40, 60, 80, 100 y 120 minutos del trayecto determinando con un medidor multiparámetro los sólidos disueltos totales (SDT), temperatura (T), conductividad eléctrica (CE), pH y oxígeno disuelto (OD). El resultado más destacado de las 28 muestras diarias y del total de 112 que los promedios oxígeno disuelto indican condición hipoxia que indica la desaparición de organismos y especies sensibles, concluyendo que el área ribereña requiere un constante m...
Revista De La Facultad De Ciencias Agrarias, 2015
Resumen y palabras clave Introduction Appropriated places for planting cactus in Argentina Nutrie... more Resumen y palabras clave Introduction Appropriated places for planting cactus in Argentina Nutrient content, productivity and cold hardiness of Opuntia clones and Opuntia ellisiana Griffiths Assessment of progenies of Opuntia sps.
International Journal of Plant Sciences, 2022
Premise of research. How vegetation adapts to environmental changes is one of the most important ... more Premise of research. How vegetation adapts to environmental changes is one of the most important questions in plant science. Temperature and precipitation are considered the main climatic drivers of morphological variations in vegetation. Several studies have demonstrated that leaf morphology varies reliably with increasing latitude, and this is mostly attributed to changes in temperature and precipitation patterns. The morphological responses of plants to temperature and rainfall regimes in arid lands are still scarcely known and understood. We analyze the morphological variation in leaf traits (size and shape) as well as the internode distance in the species Larrea divaricata and their relationship with bioclimatic variables along a latitudinal gradient in central western Argentina. Methodology. We combined a set of morphological features and bioclimatic indexes using multivariate statistics and detected six relevant regions with clear differences in both plant morphology and climatic variables. Pivotal results. The largest foliar areas were located in sites with higher seasonal precipitation. Leaf shape was influenced by temperature, and the internode distances were larger under semihumid conditions. Conclusions. The plant traits of L. divaricata were influenced by the latitudinal gradient and the predominant climate conditions of each recognized region. The study of foliar morphology allowed us to identify environmental factors that potentially influenced morphological responses in the studied species. As a preliminary stage in our research, our contribution attempts to recognize woody plant adaptations to climate influence. Other environmental variables must be included in future work for a more complete analysis.
Botany Letters, 2017
The returning of mineral contents and organic matter to the soil as litterfall is one of the most... more The returning of mineral contents and organic matter to the soil as litterfall is one of the most essential ecological process that contributes to the nutrient cycles and provides enough nutrients to plants for a healthy growth. The fallen leaves from urban forests of the cities of San Juan and Mendoza, Argentina are frequently collected especially during the autumn season with a loss of great quantity of litterfall every year. High amounts of nutrients and organic matter are exported from the urban ecosystem without completing the mineral nutrient cycle. The aim of this work is to evaluate the variation in foliar mineral and organic matter contents along seasons (spring, summer and autumn) for the two most abundant non-native species: Morus alba and Platanus hispanica located in the urban forests of the central-western part of Argentina, and the effect of the periodical leaf removal in urban areas. Differences in mineral and organic matter contents were found along the seasons. Foliar concentration losses follow the order of magnitude: N > Mg > P>K > Na. This research is a contribution to a more adequate understanding of the urban ecosystem patterns and dynamics, and it means to be helpful in the management and conservation practices of urban ecosystems.
Multequina, 2012
Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto
RESUMEN En el área metropolitana de Mendoza se llevó a cabo un estudio de análisis multielemental... more RESUMEN En el área metropolitana de Mendoza se llevó a cabo un estudio de análisis multielemental de cortezas de Morus alba . Las muestras fueron analizadas usando ICP-OES. Los datos fueron analizados estadísticamente mediante ANOVA. Los resultados confirmaron que la mayor contaminación es producida por la actividad antropogénica tales como tránsito vehicular, actividad industrial y producción minera. En el área urbana se encontraron los mayores valores de Zn y Pb. El área periurbana está caracterizada por la presencia de Hg. ABSTRACT In Mendoza metropolitan area a multielemental analysis of bark samples of Morus alba have been performed. The samples were analyzed using ICP-OES. The resulting data have been treated by an ANOVA. The results allow us to confirm that the major contamination source is anthropogenic activity such as vehicular traffic, mining and industrial activities. Major values of Zn and Pb were found in urban area. Periurban is characterized by Hg.
Revista de la Facultad de Ciencias Agrarias UNCuyo
This study aimed to determine the presence of metal elements in fruits and leaves of three tree s... more This study aimed to determine the presence of metal elements in fruits and leaves of three tree species as bioindicators in San Luis Potosi, Mexico. Ninety fruit and 90 leaf samples (30 per tree species) were collected at five sites (agricultural, suburban, commercial and services, urban, and mining), using the site and the presence of P. laevigata, S. molle, and A. farnesiana as references. Total concentrations of 13 metal elements were determined using an inductively coupled plasma mass spectrometer (ICP-MS). The species were significantly affected by Co, As, and Pb (ANOVA, p≤0.05). Considering the land use and the species, the contents determined in the leaves and fruits of the three species had sufficient and phytotoxic contents of Al, Cd, Co, Ni, Mn, Ti, and Cr, and excessive ranges with the possible phytotoxic effect of As, Cu, Pb, Zn, V, and Fe. The A. farnesiana had the highest concentrations of 12 heavy metals analyzed (HM). The variation in total metal concentrations betwe...
Se da a conocer la presencia de Phoenix sylvestris (L.) Roxburg, cultivada como ornamental y natu... more Se da a conocer la presencia de Phoenix sylvestris (L.) Roxburg, cultivada como ornamental y naturalizada en ambientes antropizados de Mendoza, San Juan y otras provincias de Argentina. Se cree que fue introducida al país hace aproximadamente 100 años y se la cita por primera vez para la flora argentina. Se hibrida con Ph. canariensis Hort. ex Chabaud, también cultivada y naturalizada, lo que en ocasiones dificulta su determinaciónPhoenix sylvestris (L.) Roxburg, cultivated as ornamental and naturalized in anthropic environments of Mendoza, San Juan, and other provinces of Argentina, is presented herein. We think that this species was introduced nearly 100 years ago, and is cited for the first time for Argentina. Ph. sylvestris hybridizes with Ph. canariensis, cultivated too, which on many occasions makes its determination difficult.Fil: Roig Junent, Fidel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Institut...
Multielemental analysis of Fraxinus pennsylvanica bark along an urban to periurban gradient in Bu... more Multielemental analysis of Fraxinus pennsylvanica bark along an urban to periurban gradient in Buenos Aires metropolis. In Buenos Aires metropolitan area a multielemental analysis of bark samples of Fraxinus pennsylvanica have been performed. The samples were analysed using ICP-OES. The resulting data have been treated by an ANOVA and by an ordination technique based on reciprocal averaging (Detrended Correspondence Analysis). The results allow us to confirm that the major contamination source is of geogenic origin with the presence of Ba, Al, Mg and Fe being principal soil components carried out by wind. Also part of these elements and the presence of Cr, Zn, Pb, Mg and Ni in the urban areas indicate anthropogenic influence and are suspected to be associated to vehicle and related economic activities. The periurban area is characterised by major values of Ba and Cu linked to the maintenance of swimming pools, fungicides and biomass combustion.
Revista del Museo Argentino de Ciencias Naturales, 2006
Journal of Arid Environments, 2009
Journal of Arid Environments, 2009
Boletín de la Sociedad Argentina de Botánica, 2019
Introducción y objetivos: La influencia de las costras biológicas (CBS) en la rugosidad del suelo... more Introducción y objetivos: La influencia de las costras biológicas (CBS) en la rugosidad del suelo es una importante función de estas comunidades a nivel ecosistémico. Nuestros objetivos fueron caracterizar microtopográficamente los tipos de CBS y evaluar su efecto en la rugosidad del suelo en tres sistemas diferenciados por su grado de aridez. M&M: El microrelieve de las CBS y su influencia en la rugosidad se evaluaron en tres sistemas: semiárido, árido, e hiperárido; mediante técnicas diferentes y complementarias: método de la cadena, análisis fotográfico y técnica de las varillas metálicas. Para la primera se empleó un diseño en bloque, mientras que paras las otras dos se trabajó sobre los tipos de CBS dominantes en cada sistema. Resultados: La morfología de las CBS varió según el tipo de organismo dominante. Los musgos tuvieron una baja altura clasificándose como “suavemente ondulados”, las cianobacterias tuvieronpicos más abruptos, clasificándose como “pinaculadas” y los líquene...
En la evaluación del impacto de la contaminación en el ambiente, existen diversas herramientas y ... more En la evaluación del impacto de la contaminación en el ambiente, existen diversas herramientas y técnicas que se aplican para conocer la calidad ambiental de los recursos naturales. El objetivo de este trabajo fue evaluar la calidad del agua en un sistema ribereño en San Luis Potosí, México asociado al impacto del uso agrícola, urbano e industrial. Fueron establecidos cinco puntos de muestreo asociado a diversos usos y descargas residuales en donde se evaluaron 28 muestras durante cuatro días de muestro. Estas fueron distribuidas a los 20, 40, 60, 80, 100 y 120 minutos del trayecto determinando con un medidor multiparámetro los sólidos disueltos totales (SDT), temperatura (T), conductividad eléctrica (CE), pH y oxígeno disuelto (OD). El resultado más destacado de las 28 muestras diarias y del total de 112 que los promedios oxígeno disuelto indican condición hipoxia que indica la desaparición de organismos y especies sensibles, concluyendo que el área ribereña requiere un constante m...
Revista De La Facultad De Ciencias Agrarias, 2015
Resumen y palabras clave Introduction Appropriated places for planting cactus in Argentina Nutrie... more Resumen y palabras clave Introduction Appropriated places for planting cactus in Argentina Nutrient content, productivity and cold hardiness of Opuntia clones and Opuntia ellisiana Griffiths Assessment of progenies of Opuntia sps.
International Journal of Plant Sciences, 2022
Premise of research. How vegetation adapts to environmental changes is one of the most important ... more Premise of research. How vegetation adapts to environmental changes is one of the most important questions in plant science. Temperature and precipitation are considered the main climatic drivers of morphological variations in vegetation. Several studies have demonstrated that leaf morphology varies reliably with increasing latitude, and this is mostly attributed to changes in temperature and precipitation patterns. The morphological responses of plants to temperature and rainfall regimes in arid lands are still scarcely known and understood. We analyze the morphological variation in leaf traits (size and shape) as well as the internode distance in the species Larrea divaricata and their relationship with bioclimatic variables along a latitudinal gradient in central western Argentina. Methodology. We combined a set of morphological features and bioclimatic indexes using multivariate statistics and detected six relevant regions with clear differences in both plant morphology and climatic variables. Pivotal results. The largest foliar areas were located in sites with higher seasonal precipitation. Leaf shape was influenced by temperature, and the internode distances were larger under semihumid conditions. Conclusions. The plant traits of L. divaricata were influenced by the latitudinal gradient and the predominant climate conditions of each recognized region. The study of foliar morphology allowed us to identify environmental factors that potentially influenced morphological responses in the studied species. As a preliminary stage in our research, our contribution attempts to recognize woody plant adaptations to climate influence. Other environmental variables must be included in future work for a more complete analysis.
Botany Letters, 2017
The returning of mineral contents and organic matter to the soil as litterfall is one of the most... more The returning of mineral contents and organic matter to the soil as litterfall is one of the most essential ecological process that contributes to the nutrient cycles and provides enough nutrients to plants for a healthy growth. The fallen leaves from urban forests of the cities of San Juan and Mendoza, Argentina are frequently collected especially during the autumn season with a loss of great quantity of litterfall every year. High amounts of nutrients and organic matter are exported from the urban ecosystem without completing the mineral nutrient cycle. The aim of this work is to evaluate the variation in foliar mineral and organic matter contents along seasons (spring, summer and autumn) for the two most abundant non-native species: Morus alba and Platanus hispanica located in the urban forests of the central-western part of Argentina, and the effect of the periodical leaf removal in urban areas. Differences in mineral and organic matter contents were found along the seasons. Foliar concentration losses follow the order of magnitude: N > Mg > P>K > Na. This research is a contribution to a more adequate understanding of the urban ecosystem patterns and dynamics, and it means to be helpful in the management and conservation practices of urban ecosystems.
Multequina, 2012
Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto
RESUMEN En el área metropolitana de Mendoza se llevó a cabo un estudio de análisis multielemental... more RESUMEN En el área metropolitana de Mendoza se llevó a cabo un estudio de análisis multielemental de cortezas de Morus alba . Las muestras fueron analizadas usando ICP-OES. Los datos fueron analizados estadísticamente mediante ANOVA. Los resultados confirmaron que la mayor contaminación es producida por la actividad antropogénica tales como tránsito vehicular, actividad industrial y producción minera. En el área urbana se encontraron los mayores valores de Zn y Pb. El área periurbana está caracterizada por la presencia de Hg. ABSTRACT In Mendoza metropolitan area a multielemental analysis of bark samples of Morus alba have been performed. The samples were analyzed using ICP-OES. The resulting data have been treated by an ANOVA. The results allow us to confirm that the major contamination source is anthropogenic activity such as vehicular traffic, mining and industrial activities. Major values of Zn and Pb were found in urban area. Periurban is characterized by Hg.
Revista de la Facultad de Ciencias Agrarias UNCuyo
This study aimed to determine the presence of metal elements in fruits and leaves of three tree s... more This study aimed to determine the presence of metal elements in fruits and leaves of three tree species as bioindicators in San Luis Potosi, Mexico. Ninety fruit and 90 leaf samples (30 per tree species) were collected at five sites (agricultural, suburban, commercial and services, urban, and mining), using the site and the presence of P. laevigata, S. molle, and A. farnesiana as references. Total concentrations of 13 metal elements were determined using an inductively coupled plasma mass spectrometer (ICP-MS). The species were significantly affected by Co, As, and Pb (ANOVA, p≤0.05). Considering the land use and the species, the contents determined in the leaves and fruits of the three species had sufficient and phytotoxic contents of Al, Cd, Co, Ni, Mn, Ti, and Cr, and excessive ranges with the possible phytotoxic effect of As, Cu, Pb, Zn, V, and Fe. The A. farnesiana had the highest concentrations of 12 heavy metals analyzed (HM). The variation in total metal concentrations betwe...
Se da a conocer la presencia de Phoenix sylvestris (L.) Roxburg, cultivada como ornamental y natu... more Se da a conocer la presencia de Phoenix sylvestris (L.) Roxburg, cultivada como ornamental y naturalizada en ambientes antropizados de Mendoza, San Juan y otras provincias de Argentina. Se cree que fue introducida al país hace aproximadamente 100 años y se la cita por primera vez para la flora argentina. Se hibrida con Ph. canariensis Hort. ex Chabaud, también cultivada y naturalizada, lo que en ocasiones dificulta su determinaciónPhoenix sylvestris (L.) Roxburg, cultivated as ornamental and naturalized in anthropic environments of Mendoza, San Juan, and other provinces of Argentina, is presented herein. We think that this species was introduced nearly 100 years ago, and is cited for the first time for Argentina. Ph. sylvestris hybridizes with Ph. canariensis, cultivated too, which on many occasions makes its determination difficult.Fil: Roig Junent, Fidel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Institut...