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USO DE BIOINDICADORES DE CONTAMINACIÓN PARA DETERMINAR LA CALIDAD DEL AGUA EN EL PARQUE NACIONAL LAGUNA DE TACARIGUA. CONSIDERACIONES ESPACIO- TEMPORALES

Authors: Malaver Nora; Rodríguez María; Montero Ramón; Aguilar Víctor;

USO DE BIOINDICADORES DE CONTAMINACIÓN PARA DETERMINAR LA CALIDAD DEL AGUA EN EL PARQUE NACIONAL LAGUNA DE TACARIGUA. CONSIDERACIONES ESPACIO- TEMPORALES

Abstract

Este trabajo presenta una evaluación y caracterización de la calidad del agua de la laguna de Tacarigua, utilizando microorganismos indicadores de calidad sanitaria, ambiental y de intervención antrópica del ecosistema. Como indicadores microbiológicos se utilizaron: bacterias heterótrofas, coliformes totales, fecales,enterococos y vibrios. Los muestreos se realizaron en Junio 2009 (evento climático Niño) y Marzo 2011 (evento climático Niña), en 16 estaciones de muestreo. Se realizó un análisis de Redundancia, (paquete CANOCO, versión 4.5) e interpolación espacial (Kriging) (PAST V.2.16), en ese sentido los Enterococos mostraron una distribución homogénea en junio 2009 en todos los sectores, mientras que en marzo 2011 presentaron un gradiente de distribución desde mayores densidades en Pirital, Club Miami, Manatí, El Guapo, El Placer y menor en Marapata, donde la relación fue inversa con las variables fisicoquímicas, excepto con temperatura. Así mismo, los coliformes fecales en junio 2009 se mostraron asociados a Club Miami, Manatí, Las Lapas, El Guapo, Carambola y Pirital, donde la profundidad es la variable que los conjuga, y por su parte para el 2011 las variables asociadas fueron la profundidad, salinidad y pH, con mayores densidades en sectores diferentes al 2009. Asimismo, Vibrio en 2009, mostró asociación con coliformes fecales, detectándose en las mismas localidades, con menor magnitud en 2011. Las bacterias heterótrofas indicadoras de degradación de materia orgánica, mostraron una distribución más homogénea en todas las localidades con efecto marcado de la salinidad, profundidad y pH en 2009. La calidad del agua de la laguna varíaestacional y temporalmente, influyendo los eventos climáticos en esta variabilidad.

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Keywords

bioindicadores, Laguna de Tacarigua, calidad de agua, contaminación, enterocos, vibrios., bioindicators, Tacarigua lagoon, water quality, contamination, enterocos, vibrios.

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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