<?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>0188-6266</journal-id>
<journal-title><![CDATA[Acta universitaria]]></journal-title>
<abbrev-journal-title><![CDATA[Acta univ]]></abbrev-journal-title>
<issn>0188-6266</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Guanajuato, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-62662016000300014</article-id>
<article-id pub-id-type="doi">10.15174/au.2016.901</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Recreational Water Quality Index (RWQI) for Colina Lake in Chihuahua, Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Índice de Calidad de Agua para Uso Recreativo (RWQI) para el Lago Colina en Chihuahua, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rubio-Arias]]></surname>
<given-names><![CDATA[Héctor Osbaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rey-Burciaga]]></surname>
<given-names><![CDATA[Nora Ivet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quintana]]></surname>
<given-names><![CDATA[Rey Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ochoa-Rivero]]></surname>
<given-names><![CDATA[Jesús Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saucedo-Terán]]></surname>
<given-names><![CDATA[Rubén Alfonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortiz-Delgado]]></surname>
<given-names><![CDATA[Roberto Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Autonomous University of Chihuahua College of Animal Science and Ecology ]]></institution>
<addr-line><![CDATA[ Chihuahua]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Autonomous University of Chihuahua College of Animal Science and Ecology ]]></institution>
<addr-line><![CDATA[ Chihuahua]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarías (INIFAP) Centro de Investigación Regional Norte Centro (CIRNOC) ]]></institution>
<addr-line><![CDATA[ Chihuahua]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<volume>26</volume>
<numero>3</numero>
<fpage>14</fpage>
<lpage>22</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662016000300014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662016000300014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662016000300014&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Recreational water use provides important benefits for human health; nevertheless, there can be adverse effects if the water is polluted. Aim of this work was to develop a Recreational Water Quality Index (RWQI) for Colina Lake in Mexico. Water samples were collected from March 2011 to February 2012 at seven random locations and at three depths (0.30 m, 1.0 m and 2.0 m). Parameters analyzed were pH, electrical conductivity (EC), total dissolved solids (TDS), dissolved oxygen (DO), temperature (T), turbidity, total hardness (TH) chlorides (Cl-) and total (TC) and fecal coliforms (FC). Statistical analyses were made considering a 12 × 3 factorial arrangement design while the RWQI was calculated for the 0.30 m depth. In general, results for parameters did not differ according to sampling depth or the interaction, but there were statistical differences according to sampling month. The RWQI indicates that water quality is generally adequate for recreational purposes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El uso recreativo del agua ofrece importantes beneficios para la salud humana; sin embargo, al estar contaminada puede tener efectos adversos. El objetivo de este trabajo fue desarrollar un Índice de Calidad del Agua para Uso Recreativo (RWQI, por sus siglas en inglés) para el lago Colina en México. Las muestras de agua se colectaron de marzo 2011 a febrero 2012 en siete sitios al azar y a tres profundidades (0.30 m, 1.0 m y 2.0 m). Se analizaron pH, conductividad eléctrica (CE), sólidos totales disueltos (SDT), oxígeno disuelto (OD), temperatura (T), turbidez, dureza total (DT), cloruros (Cl-) y coliformes totales (CT) y fecales (FC). Los análisis estadísticos se realizaron considerando un diseño de arreglo factorial 12 × 3. Los resultados presentaron diferencias estadísticas solo para los meses de muestreo, ya que no se presentó efecto de interacción. El RWQI se calculó para la profundidad de 0.30 m e indicó que la calidad del agua es adecuada para fines recreativos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Chihuahua]]></kwd>
<kwd lng="en"><![CDATA[coliforms]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
<kwd lng="en"><![CDATA[recreation areas]]></kwd>
<kwd lng="en"><![CDATA[quality index]]></kwd>
<kwd lng="es"><![CDATA[Chihuahua]]></kwd>
<kwd lng="es"><![CDATA[coliformes, México]]></kwd>
<kwd lng="es"><![CDATA[áreas recreativas]]></kwd>
<kwd lng="es"><![CDATA[índice de calidad]]></kwd>
</kwd-group>
</article-meta>
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