Aplicación de índices de calidad de agua en un arroyo pampeano utilizando macroinvertebrados bentónicos como bioindicadores (Gualeguaychú, Entre Ríos, Argentina)

Water quality can be evaluated through a set of physical, chemical and environmental variables that characterize the water body under study. These variables, along with the climate impact,hydrological regime and land use, determine the diversity of organisms. Santa Barbara Stream is a loworder stream and is located in the Gualeguaychú Departament, Entre Ríos, in the Pampean Ecorregion. In order to study the water quality, benthonic macroinvertebrates and physical chemical variables were studied, between March and October 2012. Sixteen orders, 1 suborder and 27 invertebrates families were found. The most abundant families were Cochliopidae, Paleomonidae, Caenidae, and Sphaeriidae. BMWP, IBF, IMRP and IBPamp biotic indices and diversity index of Shannon-Weaver were applied. These showed different results suggesting the need for further studies of water bodies of the Pampas Ecorregion and adjustment of indices for the region. The combined application of different rates indicates that the stream shows signs of seasonal organic pollution associated with land use in the basin.Facultad de Ciencias Naturales y Muse

Aplicación de índices de calidad de agua en un arroyo pampeano utilizando macroinvertebrados bentónicos como bioindicadores (Gualeguaychú, Entre Ríos, Argentina)

Water quality can be evaluated through a set of physical, chemical and environmental variables that characterize the water body under study. These variables, along with the climate impact,hydrological regime and land use, determine the diversity of organisms. Santa Barbara Stream is a loworder stream and is located in the Gualeguaychú Departament, Entre Ríos, in the Pampean Ecorregion. In order to study the water quality, benthonic macroinvertebrates and physical chemical variables were studied, between March and October 2012. Sixteen orders, 1 suborder and 27 invertebrates families were found. The most abundant families were Cochliopidae, Paleomonidae, Caenidae, and Sphaeriidae. BMWP, IBF, IMRP and IBPamp biotic indices and diversity index of Shannon-Weaver were applied. These showed different results suggesting the need for further studies of water bodies of the Pampas Ecorregion and adjustment of indices for the region. The combined application of different rates indicates that the stream shows signs of seasonal organic pollution associated with land use in the basin.Facultad de Ciencias Naturales y Muse

Aplicación de índices de calidad de agua en un arroyo pampeano utilizando macroinvertebrados bentónicos como bioindicadores (Gualeguaychú, Entre Ríos, Argentina)

Water quality can be evaluated through a set of physical, chemical and environmental variables that characterize the water body under study. These variables, along with the climate impact,hydrological regime and land use, determine the diversity of organisms. Santa Barbara Stream is a loworder stream and is located in the Gualeguaychú Departament, Entre Ríos, in the Pampean Ecorregion. In order to study the water quality, benthonic macroinvertebrates and physical chemical variables were studied, between March and October 2012. Sixteen orders, 1 suborder and 27 invertebrates families were found. The most abundant families were Cochliopidae, Paleomonidae, Caenidae, and Sphaeriidae. BMWP, IBF, IMRP and IBPamp biotic indices and diversity index of Shannon-Weaver were applied. These showed different results suggesting the need for further studies of water bodies of the Pampas Ecorregion and adjustment of indices for the region. The combined application of different rates indicates that the stream shows signs of seasonal organic pollution associated with land use in the basin.Facultad de Ciencias Naturales y Muse

¿Afecta Microcystina el fototropismo en plantas vasculares?

La exposición de especies vegetales a cianotoxinas podría tener impacto en sus características morfológicas y fisiológicas. Diversos trabajos han relacionado la inhibición de proteínas fosfatasas (PP1 y PP2A) con alteraciones en importantes procesos celulares; también se han reportado alteraciones estructurales en plantas sometidas a estrés osmótico. Asimismo se han logrado caracterizar alteraciones en la respuesta fototrópica de A. thaliana frente a inhibidores de proteínas fosfatasas. Nuestro objetivo fue estudiar los efectos de [D-Leu1]-Microcystina-LR ([D-Leu1]-MC-LR) sobre el desarrollo y función fototrópica de plántulas de Phaseolus vulgaris.Facultad de Ciencias Exacta

¿Afecta Microcystina el fototropismo en plantas vasculares?

La exposición de especies vegetales a cianotoxinas podría tener impacto en sus características morfológicas y fisiológicas. Diversos trabajos han relacionado la inhibición de proteínas fosfatasas (PP1 y PP2A) con alteraciones en importantes procesos celulares; también se han reportado alteraciones estructurales en plantas sometidas a estrés osmótico. Asimismo se han logrado caracterizar alteraciones en la respuesta fototrópica de A. thaliana frente a inhibidores de proteínas fosfatasas. Nuestro objetivo fue estudiar los efectos de [D-Leu1]-Microcystina-LR ([D-Leu1]-MC-LR) sobre el desarrollo y función fototrópica de plántulas de Phaseolus vulgaris.Facultad de Ciencias Exacta