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Por: Camila Gamboa-Tapias | Fecha: 11/03/2010

El planteamiento teórico de Richard Rorty acerca de las culturas liberales como comunidades conscientes de su contingencia histórica, pero también capaces de unirse en un proyecto público de solidaridad humana, constituye una importante propuesta que enriquece la discusión política en la actualidad. Su postura democrática antifundamentalista, su intento de reconciliar lo público con lo privado no mediante la filosofía, sino a través de la literatura, así como su ironismo para evadir o rechazar debates tradicionales entre los filósofos, lo convierten en un pensador polémico e interesante. En este escrito se analizarán los conceptos rortianos de ironía individual, crítica literaria, comunidad liberal y solidaridad que tienen relevancia en el campo de la teoría política y la moral.

Fuente: Universidad del Rosario - Estudios Socio-Jurídicos Formatos de contenido: Artículos

Temas:
Otros

Por: Elvia Vargas-Trujillo | Fecha: 04/05/2016

El propósito de este estudio fue examinar el uso de la versión en español del Inventario de los Cinco Grandes (Big Five Inventory – BFI traducido por Benet-Martínez & John, 1998) en una muestra colombiana de conveniencia de 323 estudiantes universitarios. Se replicó la estructura de los Cinco Grandes con un índice de congruencia factorial por encima de 0,90 (Tucker, 1951). Considerando la edad promedio de la muestra, el análisis se realizó aplicando el procedimiento recomendado por Soto, John, Gosling y Potter (2008) para controlar la aquiescencia. Los análisis confirmaron diferencias por sexo similares a las reportadas por Schmitt, Realo, Voraceck y Allik (2008).

Fuente: Universidad del Rosario - Avances en Psicología Latinoamericana Formatos de contenido: Artículos

Temas:
Otros

Por: Yorelis Acosta | Fecha: 04/05/2016

El presente estudio busca describir y analizar los contenidos auto-estereotípicos relacionados con la autoestima colectiva y el grado de identificación nacional, en 6 naciones de América Latina. Para tal fin, se desarrolló un estudio por encuestas en Argentina, Brasil, Chile, Colombia, Perú y Venezuela (n=1573). Los resultados evidencian la presencia de 4 dimensiones auto-estereotípicas denominadas: calidez, competencia, moralidad y nacionalismo ideal. Las expresiones positivas de estas dimensiones se relacionan significativamente con la autoestima colectiva y el grado de identificación con el país. Sin embargo, las magnitudes de estas relaciones difieren según las muestras por país. De manera general, las dimensiones estereotípicas más reconocidas como representativas de los endogrupos nacionales fueron las de calidez y competencia. Siendo menos reconocidas como representativas de estos grupos, las dimensiones de moralidad y nacionalismo ideal. No obstante, en un modelo general de las influencias de estos auto-estereotipos en la autoestima colectiva y el grado de identificación, se aprecia que la calidez aunque es la dimensión percibida como más representativa de los auto-estereotipos nacionales, ejerce una influencia muy débil en la auto-estima colectiva y no influye en el nivel de identificación con el endogrupo nacional

Fuente: Universidad del Rosario - Avances en Psicología Latinoamericana Formatos de contenido: Artículos

Temas:
Otros

Por: Luz A. Meneses-Ortegón | Fecha: 2016

Planktonic bacteria are involved in the process of recycling energy and take part in the bio-geochemical cycles of carbon, nitrogen and phosphorus by the processes of mineralization and transformation from inorganic compounds to organic matter. Thus these compounds are available in higher trophic levels. Although we know the importance of these bacteria, the knowledge is still low about the processes particularly how are organized in the Andes trop-ical ecosystems. The aim of this study was to carry out the characterization of planktonic bacteria: biomass, abundance and morphology in the Andean wetlands of the Eastern Cordillera. Triplicate samples were taken from surface, deep and littoral water from three lakes (La Cristalina, Laguna Negra, and Laguna Verde) in Boyacá. We found low abundance and biomass but these are within the range for oligotrophic lakes. The bacillary forms were most common in these ecosystems. Variations in abundance were found in relation to the season, being higher during the dry season.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Luz Fernanda Jiménez-Segura | Fecha: 2016

Changes in the biota inhabiting the streams downstream of dams have been the subject of numerous studies but few have focused on recovery gradients downstream of the dam or the influence of seasonality on the pulse of the flow in regulated streams. Since 2000 the hydro-power company Isagen SA E.S.P. has been monitoring some emerging characteristics of the fish community in the lower basin of La Miel River (Magdalena River Basin) downstream of the dam to document the response of the fish fauna to new environmental conditions. Based on this monitoring, we tested the hypothesis that there would be a gradient of recovery in the fish assemblage characteristics along the longitudinal axis, downstream from the turbine’s output to its mouth in the Magdalena River. The highest values observed in the dominance index were a result of the arrival of migratory species to the site of the water discharge from the dam during low water period. Finally there is a need to weigh alternative locations of a dam taking into consideration the possibility that downstream tributaries can diminish the impact of the dam and hydropower plant operation.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Javier H. Jerez-Jaimes | Fecha: 2017

The diversity of Ingoldian hyphomycetes in Colombia is known from three studies that reported in total 18 species of these fungi. For eastern Colombian there are no records of these microorganisms. In this study foam samples were collected in the Frio River drainage in the municipality of Floridablanca (Santander) in October 2013 and September 2014. In this inventory 23 hyphomycetes taxa are reported of which 20 are new records for Colombia. Clavatospora tentacula was found in both sample periods. A marked decline in species richness related to the reduction of rainfall in the year 2014 was observed.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Clara L. Matallana-Tobón | Fecha: 2017

This study was conducted with the support of the Young Researchers and Innovators Program 2012- 2013 of Colciencias. The aim of the study was to develop a qualitative analysis of the ecosystem services provided by the land covers within the different categories of protected areas in the Orinoco basin. To achieve this goal, a matrix was constructed according to the capacities of the different land covers to provide ecosystem services and their respective conservation categories were analyzed. A survey of experts working on protected areas was also performed. As results was obtained for each protected area management category the number of hectares and the type of land cover and ecosystem were identified. Of the total number of surveys sent to experts, 19 were completed and additional information on 3 private reserves was obtained from interviews with the owners. As conclusions, the region has a variety of land covers with different capacities to provide regulation, provision and cultural ecosystem services. However, a complete analysis would require field work in each area in order to verify the matrix of provision capacities of ecosystem services. The information hereby presented may contribute to the effective management of the protected areas.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Fabel Ávila | Fecha: 2017

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Andrés Aponte-Gutiérrez | Fecha: 2017

From December 2012 and January 2013 a survey of the herpetofauna diversity was made in forest remnants, farms, open areas, and vegetation around wetlands at a locality in the middle Magdalena River valley, department of Antioquia, Colombia. We recorded 27 amphibian and 36 reptile species. Three of the amphibian species are endemic to Colombia and one is considered threatened; one of the reptile species is endemic to Colombia, and three are categorized as threatened. The species diversity of amphibians and reptiles did not differ significantly between forest and farming areas, but it was higher than in open areas and vegetation associated with wetlands. The species turnover between these two groups of vegetation coverages was higher in amphibians than in reptiles. This differential species turnover level suggests that forest amphibians are more susceptible than the reptiles to deforestation, possibly due to their high dependence of moist microhabitats. Since most forests in the Middle Magdalena River valley of Colombia have been deforested, the conservation of forest remnants that still persist is a priority.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Jairo Solorza-Bejarano | Fecha: 2017

The seed density of Ulex europaeus was established on borders of invasive scrub thickets to the south of the Eastern Hills of Bogota. Through the direct counting method, seed abundance was established at six sampling points in an altitudinal gradient between 2,300 and 3,200 meters altitude, and for four soil depth ranges of 0 to 20 cm. Variable seed densities were established for the six sampling points between 109 and 3.384 seeds m-2. With regard to depth, the highest seed density was in the range of 0 to 5 cm for all sites sampled. Among the sampling points, significant differences were found in the number of seeds at different altitudes (p = 0.4159) and depth ranges evaluated (p=0.3919). There is a high potential at the edges of scrub for the extension of the invaded areas, by activation of the seed bank of the invasive species, suggesting the need for a priority strategy for the control of these border areas in the framework of ecological restoration processes in high Andean ecosystems.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros