<?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>2007-2422</journal-id>
<journal-title><![CDATA[Tecnología y ciencias del agua]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnol. cienc. agua]]></abbrev-journal-title>
<issn>2007-2422</issn>
<publisher>
<publisher-name><![CDATA[Instituto Mexicano de Tecnología del Agua, Coordinación de Comunicación, Participación e Información]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-24222021000300379</article-id>
<article-id pub-id-type="doi">10.24850/j-tyca-2021-03-10</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Calidad de agua del río Puyo y afluentes, Pastaza, Ecuador]]></article-title>
<article-title xml:lang="en"><![CDATA[Water quality of Puyo River and tributaries, Pastaza, Ecuador]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Abril-Saltos]]></surname>
<given-names><![CDATA[Ricardo Vinicio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Armas-Chugcho]]></surname>
<given-names><![CDATA[Patricia Abigail]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chamorro]]></surname>
<given-names><![CDATA[Washington Patricio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Toscano-Salazar]]></surname>
<given-names><![CDATA[Víctor Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sucoshañay-Villalva]]></surname>
<given-names><![CDATA[Darwin Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ríos-Rodríguez]]></surname>
<given-names><![CDATA[Antonio Fabricio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Estatal Amazónica  ]]></institution>
<addr-line><![CDATA[Pastaza ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Gobierno Autónomo Descentralizado Provincial de Pastaza  ]]></institution>
<addr-line><![CDATA[Pastaza ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Gobierno Autónomo Descentralizado Provincial de Pastaza  ]]></institution>
<addr-line><![CDATA[Pastaza ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Gobierno Autónomo Descentralizado Provincial de Pastaza  ]]></institution>
<addr-line><![CDATA[Pastaza ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Estatal Amazónica  ]]></institution>
<addr-line><![CDATA[Pastaza ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Gobierno Autónomo Descentralizado Provincial de Pastaza  ]]></institution>
<addr-line><![CDATA[Pastaza Ecuador]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>12</volume>
<numero>3</numero>
<fpage>379</fpage>
<lpage>417</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-24222021000300379&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-24222021000300379&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-24222021000300379&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Esta investigación se desarrolló en la subcuenca del río Puyo, Provincia de Pastaza, Ecuador, en los años 2015 y 2018, y tuvo como objetivo caracterizar la calidad ambiental de agua en diferentes sectores de la subcuenca del río Puyo, incluyendo los principales afluentes. Se clasificaron las zonas en alta, urbana y baja. Se realizó un monitoreo en el cauce principal y sus afluentes en 28 puntos, registrándose valores de conductividad, pH, temperatura, saturación de oxígeno, demanda química de oxígeno, demanda bioquímica de oxígeno, y coliformes totales y fecales; se aplicaron 413 cuestionarios para identificar los principales tipos de actividades que se desarrollan en las zonas aledañas al curso principal y afluentes. Los resultados mostraron diferencias en las concentraciones de los distintos parámetros en las fechas y puntos de monitoreo, reportando mayores concentraciones de DBO5, coliformes totales y fecales en las zonas del área urbana. El análisis de correlación mostró relaciones significativas entre las variables estudiadas, con excepción de la saturación de oxígeno. El análisis de varianza mostró diferencias significativas entre las zonas para la conductividad eléctrica, y concentración de coliformes fecales y totales. Los resultados revelan que la mayoría de aguas residuales se depositan de forma directa en el sistema de alcantarillado y en el cauce principal del río. Se concluye que el comportamiento de las diferentes variables registradas difiere entre el cuerpo principal y afluentes, incrementando las concentraciones de coliformes totales y fecales a partir de la zona urbana en el cuerpo principal, y difiriendo el comportamiento del resto de parámetros en las tres zonas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This research was carried out in the sub-basin of Puyo River in the province of Pastaza in Ecuador between 2015 and 2018. It was aimed to characterize the environmental quality of water in different areas of the Puyo river sub-basin, including the main tributaries. The areas were classified as high, urban and low. A monitoring was carried out in the main course and its tributaries at 28 spots, registering values of conductivity, pH, temperature and oxygen saturation, chemical oxygen demand, biochemical oxygen demand, total and fecal coliforms as well as 413 surveys that were applied to identify the main types of activities that take place in the areas surrounding the main course and tributaries. The results showed differences in the concentrations of the different parameters in the dates and monitoring spots, reporting higher concentrations of BOD5, total and fecal coliforms in the urban area. The correlation analysis showed significant relationships between the variables studied except for oxygen saturation. The analysis of variance showed significant differences between the zones for electrical conductivity and the concentration of fecal and total coliforms. Surveys revealed that the majority of wastewater is deposited directly into the sewerage system and the main course of the river. It is concluded that the behavior of the different variables registered differs between the main body and tributaries, increasing the concentrations of total fecal coliforms from the urban area in the main body and differing the behavior of the other parameters in the three areas.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[contaminación hídrica]]></kwd>
<kwd lng="es"><![CDATA[agua]]></kwd>
<kwd lng="es"><![CDATA[población]]></kwd>
<kwd lng="en"><![CDATA[Water pollution]]></kwd>
<kwd lng="en"><![CDATA[water]]></kwd>
<kwd lng="en"><![CDATA[population]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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