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Cianobacterias y cianotoxinas en ecosistemas límnicos de Uruguay = Cyanobacteria and cyanotoxins in freshwaters of Uruguay

Authors: BONILLA, SYLVIA; HAAKONSSON, SIGNE; SOMMA, ANDREA; GRAVIER, ANA; VIDAL, LETICIA; DE LEÓN, LIZET; BRENA, BEATRIZ M.; +7 Authors

Cianobacterias y cianotoxinas en ecosistemas límnicos de Uruguay = Cyanobacteria and cyanotoxins in freshwaters of Uruguay

Abstract

Las floraciones de cianobacterias en cuerpos de agua dulce constituyen un problema mundial, asociado a la eutrofización (enriquecimiento de nutrientes) y cambios hidrológicos de los ecosistemas. En este estudio se generó una base de datos históricos (n= 3061 para 64 ecosistemas, de 1980 a 2014), elaborada por un grupo de trabajo interinstitucional (OSE, DINAMA, IM, Universidad de la República e IIBCE), y se analizó la distribución de cianobacterias planctónicas y de cianotoxinas (microcistina, saxitoxina y cilindrospermopsina) en Uruguay. Los valores de clorofila ay nutrientes totales indicaron procesos de eutrofización en diversos ecosistemas. En dos mapas georreferenciados se visualiza la distribución de cianobacterias en el país, según indicadores cuantitativos globales, y de la microcistina (cianotoxina más frecuente). En dichos mapas se destacan los embalses (Río Uruguay y Río Negro) y las playas del Río de la Plata como las zonas de mayor riesgo de exposición a cianobacterias según las categorías de la Organización Mundial de la Salud para aguas recreacionales. Además, se analizaron muestras de floraciones (espuma) y se cuantificó 20 mg L-1de microcistinas totales y la presencia de genes que sugieren diferentes variedades de microcistinas. Se generó información básica que podrá ser útil para programas de monitoreo nacionales e investigación.

Keywords

CIANOBACTERIAS, URUGUAY, CONTAMINACIÓN DEL AGUA, MEDIO AMBIENTE

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selected citations
These citations are derived from selected sources.
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).
BIP!Citations provided by BIP!
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.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green