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Research paper thumbnail of EVALUACIÓN TOXICOLOGICA NO INVASIVA DEL CADMIO: MODIFICACIONES DE BIOMARCADORES CONDUCTUALES EN Cyprinus carpio

Research paper thumbnail of Social Behavior and Group Formation in the Coypu (Myocastor Coypus) in the Argentinean Pampas

Research paper thumbnail of Ecología nutricional de la vicuña, Vicugna vicugna, con un ejemplo en la Reserva Laguna Blanca, Catamarca

Research paper thumbnail of La ardilla de vientre rojo en Argentina y el manejo de especies introducidas como un problema biológico y social

Ecologia Austral

La ardilla de vientre rojo en Argentina y el manejo de especies introducidas como un problema bio... more La ardilla de vientre rojo en Argentina y el manejo de especies introducidas como un problema biológico y social RESUMEN. El estudio y manejo de especies exóticas invasoras ha estado principalmente enfocado en conocer el proceso de invasión y técnicas adecuadas de manejo. Sin embargo, en los últimos años los estudios que promueven la participación de diferentes grupos sociales de la comunidad en los planes de manejo han cobrado importancia. En este trabajo describimos las opiniones y actitudes predominantes de seis grupos sociales (productores y prestadores de servicios, ambientalistas, vecinos, personal de áreas protegidas, funcionarios y docentes) con respecto a la presencia de la ardilla de vientre rojo introducida en Argentina. La existencia de varios focos de invasión de ardillas en tres provincias argentinas se relaciona con liberaciones intencionales de ardillas, en ocasiones obtenidas por comercio ilegal. Las opiniones con respecto a la presencia de ardillas variaron desde u...

Research paper thumbnail of La ardilla de vientre rojo en Argentina: investigación y educación, puntos clave para el manejo de una especie invasora

Research paper thumbnail of Vegetation Characterization of Laguna Blanca (Catamarca, Argentina) Biosphere Reserve

Ecologia Austral

In this work we present the first characterization and classification of plant communities and ha... more In this work we present the first characterization and classification of plant communities and habitats in a typical area of the Argentinean Dry Puna sub-region, corresponding to Laguna Blanca (Catamarca, Argentina) Biosphere Reserve. A floristic list of 75 plant species was conducted. Six types of environments were characterized based on field work, satellite images using GIS: grass steppe, shrub steppe, mixed steppe, "vegas", "salt marsh" and "peladares". Three types of shrub steppes were recognized, based on dominant shrub: "rica-rical" (Acantholippia sp.), "tolillal alto" (Fabiana densa) and "tolillar bajo" (Fabiana spp.). Also three types of grass steppes were defined depending on dominant grass: Stipa spp., Festuca spp. and Panicum chloroleucum steppes. Two mixed steppes were described, based on grass species present: Stipa spp. and Panicum chloroleucum steppes. This classification was validated with Kappa index using...

Research paper thumbnail of From a lag in vector activity to a constant increase of translocations: invasion of Callosciurus squirrels in Argentina

Biological Invasions, 2015

ABSTRACT Arboreal squirrels of the Asiatic genus Callosciurus have shown high likelihood of estab... more ABSTRACT Arboreal squirrels of the Asiatic genus Callosciurus have shown high likelihood of establishment from few released animals, in particular, C. erythraeus has established wild populations in Argentina, Belgium, France, Hong Kong, Japan, and The Netherlands. We report the invasion process of C. erythraeus in Argentina in the last four decades and suggest management actions for each foci. Between February 2011 and November 2014 we conducted field surveys and interviews in nine sites in central Argentina to confirm the presence of C. erythraeus, describe their history of introduction, and estimate range expansion and squirrel relative abundance. We report a two decades lag-phase until the onset of translocations of C. erythraeus within national boundaries that resulted in a constant increase of the cumulative number of releases. We confirm nine new release events between 1995 and 2012 and six new invasion foci that yields a total of 13 deliberate releases and 10 invasion foci established in rural and urban areas of Argentina. Spread rate ranged from 0.12 to 0.66 km/year. An intermediate relative density of squirrels (2–7 ind/ha) was found close to release sites except in one case. All introduction events involved squirrels translocated from the first, 40 years old invasion focus, occasionally involving illegal trade. The rate of introduction events in the last decades and the translocation-lag phase described in this study should call the attention in all countries dealing with charismatic, introduced species. Translocation disruption requires urgent attention to slow down the invasion of this and other species.

Research paper thumbnail of Foraging ecology of Vicuña, Vicugna vicugna, in dry Puna of Argentina

Small Ruminant Research, 2010

Research paper thumbnail of Diet of the Coypu (Nutria, Myocastor coypus) in Agro-Systems of Argentinean Pampas

The Journal of Wildlife Management, 2000

Research paper thumbnail of Social Behavior and Group Formation in the Coypu (Myocastor Coypus) in the Argentinean Pampas

Journal of Mammalogy, 2003

Research paper thumbnail of Interaction between wild camelids and livestock in an Andean semi-desert

Journal of Arid Environments, 2008

Research paper thumbnail of Foraging behaviour of coypus Myocastor coypus: why do coypus consume aquatic plants?

Research paper thumbnail of Caracterización de la vegetación en la Reserva de Biosfera Laguna Blanca (Catamarca, Argentina)

Ecologia Austral

RESUMEN. En este trabajo presentamos la primera caracterización y clasificación con imágenes de l... more RESUMEN. En este trabajo presentamos la primera caracterización y clasificación con imágenes de los ambientes y la vegetación en un área típica de la Puna seca argentina, correspondiente a la Reserva de Biósfera Laguna Blanca (Catamarca, Argentina). Se realizó un relevamiento florístico del lugar identificando 75 especies. Se describieron y se mapearon seis tipos de ambientes utilizando técnicas de Sistemas de Información Geográfica: estepas arbustivas, estepas graminosas, estepas mixtas, vegas, salinas y peladares. Dentro de las estepas arbustivas se reconocieron tres tipos, dependiendo de la especie de arbusto dominante: rica-rical (Acantholippia sp.), tolillar alto (Fabiana densa) y tolillar bajo (Fabiana spp. valle, asociándose estos patrones a los tipos de vegetación y los ambientes. Esta caracterización y mapeo permitió la comparación con otras zonas de puna y en particular, aportó información básica para el manejo de la Reserva. [Palabras clave: Puna, áreas protegidas, releva...

Research paper thumbnail of Sociality, Foraging and Habitat Use by Vicuña

Research paper thumbnail of EVALUACIÓN TOXICOLOGICA NO INVASIVA DEL CADMIO: MODIFICACIONES DE BIOMARCADORES CONDUCTUALES EN Cyprinus carpio

Research paper thumbnail of Social Behavior and Group Formation in the Coypu (Myocastor Coypus) in the Argentinean Pampas

Research paper thumbnail of Ecología nutricional de la vicuña, Vicugna vicugna, con un ejemplo en la Reserva Laguna Blanca, Catamarca

Research paper thumbnail of La ardilla de vientre rojo en Argentina y el manejo de especies introducidas como un problema biológico y social

Ecologia Austral

La ardilla de vientre rojo en Argentina y el manejo de especies introducidas como un problema bio... more La ardilla de vientre rojo en Argentina y el manejo de especies introducidas como un problema biológico y social RESUMEN. El estudio y manejo de especies exóticas invasoras ha estado principalmente enfocado en conocer el proceso de invasión y técnicas adecuadas de manejo. Sin embargo, en los últimos años los estudios que promueven la participación de diferentes grupos sociales de la comunidad en los planes de manejo han cobrado importancia. En este trabajo describimos las opiniones y actitudes predominantes de seis grupos sociales (productores y prestadores de servicios, ambientalistas, vecinos, personal de áreas protegidas, funcionarios y docentes) con respecto a la presencia de la ardilla de vientre rojo introducida en Argentina. La existencia de varios focos de invasión de ardillas en tres provincias argentinas se relaciona con liberaciones intencionales de ardillas, en ocasiones obtenidas por comercio ilegal. Las opiniones con respecto a la presencia de ardillas variaron desde u...

Research paper thumbnail of La ardilla de vientre rojo en Argentina: investigación y educación, puntos clave para el manejo de una especie invasora

Research paper thumbnail of Vegetation Characterization of Laguna Blanca (Catamarca, Argentina) Biosphere Reserve

Ecologia Austral

In this work we present the first characterization and classification of plant communities and ha... more In this work we present the first characterization and classification of plant communities and habitats in a typical area of the Argentinean Dry Puna sub-region, corresponding to Laguna Blanca (Catamarca, Argentina) Biosphere Reserve. A floristic list of 75 plant species was conducted. Six types of environments were characterized based on field work, satellite images using GIS: grass steppe, shrub steppe, mixed steppe, "vegas", "salt marsh" and "peladares". Three types of shrub steppes were recognized, based on dominant shrub: "rica-rical" (Acantholippia sp.), "tolillal alto" (Fabiana densa) and "tolillar bajo" (Fabiana spp.). Also three types of grass steppes were defined depending on dominant grass: Stipa spp., Festuca spp. and Panicum chloroleucum steppes. Two mixed steppes were described, based on grass species present: Stipa spp. and Panicum chloroleucum steppes. This classification was validated with Kappa index using...

Research paper thumbnail of From a lag in vector activity to a constant increase of translocations: invasion of Callosciurus squirrels in Argentina

Biological Invasions, 2015

ABSTRACT Arboreal squirrels of the Asiatic genus Callosciurus have shown high likelihood of estab... more ABSTRACT Arboreal squirrels of the Asiatic genus Callosciurus have shown high likelihood of establishment from few released animals, in particular, C. erythraeus has established wild populations in Argentina, Belgium, France, Hong Kong, Japan, and The Netherlands. We report the invasion process of C. erythraeus in Argentina in the last four decades and suggest management actions for each foci. Between February 2011 and November 2014 we conducted field surveys and interviews in nine sites in central Argentina to confirm the presence of C. erythraeus, describe their history of introduction, and estimate range expansion and squirrel relative abundance. We report a two decades lag-phase until the onset of translocations of C. erythraeus within national boundaries that resulted in a constant increase of the cumulative number of releases. We confirm nine new release events between 1995 and 2012 and six new invasion foci that yields a total of 13 deliberate releases and 10 invasion foci established in rural and urban areas of Argentina. Spread rate ranged from 0.12 to 0.66 km/year. An intermediate relative density of squirrels (2–7 ind/ha) was found close to release sites except in one case. All introduction events involved squirrels translocated from the first, 40 years old invasion focus, occasionally involving illegal trade. The rate of introduction events in the last decades and the translocation-lag phase described in this study should call the attention in all countries dealing with charismatic, introduced species. Translocation disruption requires urgent attention to slow down the invasion of this and other species.

Research paper thumbnail of Foraging ecology of Vicuña, Vicugna vicugna, in dry Puna of Argentina

Small Ruminant Research, 2010

Research paper thumbnail of Diet of the Coypu (Nutria, Myocastor coypus) in Agro-Systems of Argentinean Pampas

The Journal of Wildlife Management, 2000

Research paper thumbnail of Social Behavior and Group Formation in the Coypu (Myocastor Coypus) in the Argentinean Pampas

Journal of Mammalogy, 2003

Research paper thumbnail of Interaction between wild camelids and livestock in an Andean semi-desert

Journal of Arid Environments, 2008

Research paper thumbnail of Foraging behaviour of coypus Myocastor coypus: why do coypus consume aquatic plants?

Research paper thumbnail of Caracterización de la vegetación en la Reserva de Biosfera Laguna Blanca (Catamarca, Argentina)

Ecologia Austral

RESUMEN. En este trabajo presentamos la primera caracterización y clasificación con imágenes de l... more RESUMEN. En este trabajo presentamos la primera caracterización y clasificación con imágenes de los ambientes y la vegetación en un área típica de la Puna seca argentina, correspondiente a la Reserva de Biósfera Laguna Blanca (Catamarca, Argentina). Se realizó un relevamiento florístico del lugar identificando 75 especies. Se describieron y se mapearon seis tipos de ambientes utilizando técnicas de Sistemas de Información Geográfica: estepas arbustivas, estepas graminosas, estepas mixtas, vegas, salinas y peladares. Dentro de las estepas arbustivas se reconocieron tres tipos, dependiendo de la especie de arbusto dominante: rica-rical (Acantholippia sp.), tolillar alto (Fabiana densa) y tolillar bajo (Fabiana spp. valle, asociándose estos patrones a los tipos de vegetación y los ambientes. Esta caracterización y mapeo permitió la comparación con otras zonas de puna y en particular, aportó información básica para el manejo de la Reserva. [Palabras clave: Puna, áreas protegidas, releva...

Research paper thumbnail of Sociality, Foraging and Habitat Use by Vicuña