<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0188-4999</journal-id>
<journal-title><![CDATA[Revista internacional de contaminación ambiental]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Int. Contam. Ambient]]></abbrev-journal-title>
<issn>0188-4999</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias de la Atmósfera y Cambio Climático]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-49992022000100110</article-id>
<article-id pub-id-type="doi">10.20937/rica.54119</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[AQUATIC MACROPHYTES AS BIOINDICATORS OF METALS IN WATER RESERVOIRS IN VENEZUELA]]></article-title>
<article-title xml:lang="es"><![CDATA[MACRÓFITAS ACUÁTICAS COMO BIOINDICADORES DE METALES EN RESERVORIOS DE AGUA DE VENEZUELA]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[Tomás A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos Fonseca]]></surname>
<given-names><![CDATA[Ruth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Simón Bolívar Laboratorio de Comunidades Marinas y Ecotoxicología / CETOXMAR ]]></institution>
<addr-line><![CDATA[ Miranda]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Simón Bolívar Laboratorio de Comunidades Marinas y Ecotoxicología / CETOXMAR y Departamento de Biología de Organismos ]]></institution>
<addr-line><![CDATA[ Miranda]]></addr-line>
<country>Venezuela</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>38</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992022000100110&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992022000100110&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992022000100110&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In Caracas, Venezuela, the water reservoirs that provide services to the city do not have a monitoring plan, and the concentrations of possible pollutants are unknown. This is of interest, considering that these areas have had uncontrolled growth and suffer from urban discharges, which are potential sources of contaminants such as heavy metals. Under this scenario, the study&#8217;s objective was to assess the potential of the aquatic macrophytes Eichhornia crassipes and Lemna minor as bioindicators for metal contamination by accumulation. Plants, water, and sediment samples were collected in La Mariposa, Camatagua, and La Pereza reservoirs, at two sampling points per reservoir, three transects per point, and three samples per transect. The concentrations of Pb, Al, Zn, Ni, Cu, and Hg in the mentioned compartments and the bioavailable fraction of sediments were determined with inductively coupled plasma in optical emission spectroscopy and a direct mercury analizer. The metal content of the analyzed samples was different between the reservoirs (pperm &#706; 0.05). Metal concentrations in E. crassipes and L. minor were also different between water reservoirs (pperm &#706; 0.05 and MC at 0.05, respectively). The plants&#8217; metal content had a similar pattern to the concentrations of metals in water, sediments, and bioavailable fraction (p &#706; 0.05). The results suggest that both species are potential bioindicators for metal contamination by accumulation, especially E. crassipes since it is a perennial plant that could reflect environmental quality over a longer period than L. minor.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En Caracas, Venezuela, los embalses de agua que brindan servicios a la ciudad no tienen un plan de monitoreo y se desconocen las concentraciones de posibles contaminantes. Esto es interesante, teniendo en cuenta el crecimiento incontrolado en estas áreas y las descargas urbanas que son entradas potenciales de contaminantes, como los metales pesados, a los embalses. Bajo este escenario, el objetivo del estudio fue evaluar el potencial de las macrófitas acuáticas Eichhornia crassipes y Lemna minor, como bioindicadores de contaminación por acumulación de metales pesados. Se recolectaron muestras de las plantas, agua y sedimentos en los embalses La Mariposa, Camatagua y La Pereza, en dos puntos de muestreo por embalse, tres transectos por punto y 3 muestras por transecto. Las concentraciones de Pb, Al, Zn, Ni, Cu y Hg en los compartimentos mencionados y la fracción biodisponible de los sedimentos se determinaron con espectrometría de emisión óptica de plasma acoplado inductivamente y análisis directo de mercurio. El contenido de metales de todos los compartimentos fue diferente entre los embalses (pperm &#706; 0.05). Las concentraciones de metales en E. crassipes y L. minor también fueron diferente entre embalses (pperm &#706; 0.05 y MC a 0.05, respectivamente). Adicionalmente, el contenido metálico de las plantas tuvo un patrón similar a las concentraciones de metales en agua, sedimentos y fracción biodisponible (p &#706; 0.05). Los resultados sugieren que ambas especies son potenciales bioindicadoras de contaminación de metales pesados por acumulación. Especialmente E. crassipes, que al ser una planta perenne podría reflejar la calidad ambiental durante un período de tiempo más largo que L. minor.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[bioaccumulation]]></kwd>
<kwd lng="en"><![CDATA[Eichhornia crassipes]]></kwd>
<kwd lng="en"><![CDATA[heavy metals]]></kwd>
<kwd lng="en"><![CDATA[Lemna minor]]></kwd>
<kwd lng="es"><![CDATA[bioacumulación]]></kwd>
<kwd lng="es"><![CDATA[Eichhornia crassipes]]></kwd>
<kwd lng="es"><![CDATA[metales pesados]]></kwd>
<kwd lng="es"><![CDATA[Lemna minor]]></kwd>
</kwd-group>
</article-meta>
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