<?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>S2007-24222021000100037</article-id>
<article-id pub-id-type="doi">10.24850/j-tyca-2021-01-02</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Índice de calidad de agua en la microcuenca altoandina del río Chumbao, Andahuaylas, Apurímac, Perú]]></article-title>
<article-title xml:lang="en"><![CDATA[Water quality index in the high-Andean micro-basin of the Chumbao River, Andahuaylas, Apurímac, Peru]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Choque-Quispe]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ligarda-Samanez]]></surname>
<given-names><![CDATA[Carlos A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solano-Reynoso]]></surname>
<given-names><![CDATA[Aydeé M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos-Pacheco]]></surname>
<given-names><![CDATA[Betsy S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quispe-Quispe]]></surname>
<given-names><![CDATA[Yadyra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Choque-Quispe]]></surname>
<given-names><![CDATA[Yudith]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kari-Ferro]]></surname>
<given-names><![CDATA[Aydeé]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional José María Arguedas Escuela de Ingeniería Agroindustrial ]]></institution>
<addr-line><![CDATA[Andahuaylas ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional José María Arguedas Escuela de Ingeniería Agroindustrial ]]></institution>
<addr-line><![CDATA[Andahuaylas ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Tecnológica de los Andes Escuela de Ingeniería Ambiental ]]></institution>
<addr-line><![CDATA[Andahuaylas ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional José María Arguedas Escuela de Ingeniería Agroindustrial ]]></institution>
<addr-line><![CDATA[Andahuaylas ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Alas Peruanas Escuela de Ingeniería Ambiental ]]></institution>
<addr-line><![CDATA[Cusco ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad Tecnológica de los Andes Escuela de Ingeniería Ambiental ]]></institution>
<addr-line><![CDATA[Cusco ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Universidad Micaela Bastidas  ]]></institution>
<addr-line><![CDATA[Abancay ]]></addr-line>
<country>Peru</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2021</year>
</pub-date>
<volume>12</volume>
<numero>1</numero>
<fpage>37</fpage>
<lpage>73</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-24222021000100037&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-24222021000100037&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-24222021000100037&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El índice de calidad del agua (ICA) de un cuerpo hídrico indica el grado de contaminación para un determinado uso y está relacionado con las actividades antrópicas que suscitan alrededor. El objetivo fue determinar el ICA en la microcuenca altoandina del río Chumbao, Andahuaylas, Perú. El tramo de estudio estuvo comprendido entre la cabecera de cuenca (13° 46' 42.5" S, 73° 13' 50.0" O y 4 295 m de altitud), y el último punto de muestreo (13° 35' 26.4" S, 73°27'0.8" O y 2 529 m de altitud), con pendiente media de 4 %. El ICA Dinius se evaluó considerando parámetros como nivel de oxígeno (OD y DBO5); nivel de eutrofización (NO3 - y PO4 3-); características físicas (temperatura, turbidez, color y STD); sustancias disueltas (alcalinidad, dureza, pH, conductividad y cloruros), y parámetros microbiológicos (E. coli y coliformes totales); se muestreó en temporada de avenidas (02 puntos lénticos y 08 lóticos). Los datos se recolectaron por triplicado y se analizaron a través de un ANOVA, test Tukey y correlación de Pearson al 5 % de significancia. Se encontró que el uso predominante del agua del río es para agricultura, pastura y urbanización; el ICA está distribuido en tres categorías: Excelente (M1, M2, M3, M4 y M5), cercanos a la cabecera de la microcuenca y los puntos lénticos (lagunas de Pampahuasi y Paccoccocha); Aceptable (M6); y Excesivamente contaminado; los puntos M7 y M8 fuera de la zona urbana aguas abajo (p-value &lt; 0.05) presentan buena correlación negativa con los parámetros de estudio. En conclusión, el agua en zonas de baja densidad poblacional es buena.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The water quality index (WQI) of a water body, indicates the degree of contamination for a given use, and it is related to the anthropic activities that they provoke around. The objective was to determine the WQI, in the high-Andean micro-basin of the Chumbao River, Andahuaylas, Peru. The section of study was included between the head of the basin (13°46'42.5" S, 73°13'50.0" W and 4 295 m of altitude), and last sampling point (13°35'26.4" S, 73°27'0.8" W and 2 529 m of altitude), with an average slope of 4%. The WQI Dinius was evaluated considering parameters such as oxygen level (DO and BOD5), eutrophication level (NO3 - and PO4 3-), physical characteristics (temperature, turbidity, color and TDS), dissolved substances (alkalinity, hardness, pH, conductivity and chlorides), and microbiological parameters (E. coli and total coliforms); it was sampled during the avenues season (02 lentic points and 08 lotics). The data were collected in triplicate, and analyzed through an ANOVA, Tukey test and Pearson's correlation at 5% significance. It was found that the predominant use of river water is for agriculture, pasture and urbanization; the WQI is divided into three categories Excellent (M1, M2, M3, M4 and M5) close to the head of the micro-basin and the lentic points (Pampahuasi and Paccoccocha lagoons), Acceptable (M6), and excessively contaminated points M7 and M8 outside the urban area downstream (p-value &lt; 0.05); presenting a good negative correlation with the study parameters. In conclusion, the water in areas of low population density is good.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[altoandina]]></kwd>
<kwd lng="es"><![CDATA[Dinius]]></kwd>
<kwd lng="es"><![CDATA[ICA]]></kwd>
<kwd lng="es"><![CDATA[microcuenca]]></kwd>
<kwd lng="es"><![CDATA[río Chumbao]]></kwd>
<kwd lng="en"><![CDATA[High-Andean]]></kwd>
<kwd lng="en"><![CDATA[Dinius]]></kwd>
<kwd lng="en"><![CDATA[WQI]]></kwd>
<kwd lng="en"><![CDATA[micro-basin]]></kwd>
<kwd lng="en"><![CDATA[Chumbao River]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Abbas]]></surname>
<given-names><![CDATA[A. A. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hassan]]></surname>
<given-names><![CDATA[F. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water quality assessment of Euphrates River in Gadisiyah province (Diwaniyah River), Iraq]]></article-title>
<source><![CDATA[Iraqi Journal of Agricultural Sciences]]></source>
<year>2018</year>
<volume>49</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>251-61</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aguirre-Martínez]]></surname>
<given-names><![CDATA[G. V.]]></given-names>
</name>
<name>
<surname><![CDATA[André]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Gagné]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Martín-Díaz]]></surname>
<given-names><![CDATA[L. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effects of human drugs in Corbicula fluminea. Assessment of neurotoxicity, inflammation, gametogenic activity, and energy status]]></article-title>
<source><![CDATA[Ecotoxicology and Environmental Safety]]></source>
<year>2018</year>
<volume>148</volume>
<page-range>652-63</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Almeida]]></surname>
<given-names><![CDATA[M. A. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Schwarzbold]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Avaliação sazonal da qualidade das águas do Arroio da Cria Montenegro, RS com aplicação de um índice de qualidade de água (IQA)]]></article-title>
<source><![CDATA[Revista Brasileira de Recursos Hídricos]]></source>
<year>2003</year>
<volume>8</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>81-97</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Amado]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Rubiños-Panta]]></surname>
<given-names><![CDATA[J. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Gavi-Reyes]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Alarcón-Cabañero]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández-Acosta]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramírez-Ayala]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Mejía-Saenz]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Pedrero-Salcedo]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Nicolas-Nicolas]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Salazar-Sosa]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water quality in the basin of the Amajac River, Hidalgo, Mexico: Diagnosis and prediction]]></article-title>
<source><![CDATA[Phyton]]></source>
<year>2006</year>
<volume>75</volume>
<page-range>71-83</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<collab>American Public Health Association</collab>
<source><![CDATA[Standard methods for the examination of water and wastewater]]></source>
<year>2012</year>
<edition>22</edition>
<publisher-loc><![CDATA[.). Washington, DC, USA ]]></publisher-loc>
<publisher-name><![CDATA[American Public Health Association (APHA), American Water Works Association (AWWA) and Water Environment Federation (WEF)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Arbat-Bofill]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez-Juny]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bladé]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Niñerola]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Dolz]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Palau]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hydrodynamics of Ribarroja Reservoir (Ebro River, Spain): Water temperature, water velocities and water age]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Anton]]></surname>
<given-names><![CDATA[J. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Giovanni]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Mario]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Michael]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<source><![CDATA[Proceeding of the International Conference on Fluvial Hydraulics]]></source>
<year>2014</year>
<page-range>1737-44</page-range><publisher-loc><![CDATA[Lausanne, Switzerland ]]></publisher-loc>
<publisher-name><![CDATA[Taylor &amp; Francis Group]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Benvenuti]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Kieling-Rubio]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Klauck]]></surname>
<given-names><![CDATA[C. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodrigues]]></surname>
<given-names><![CDATA[M. A. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation of water quality at the source of streams of the Sinos River Basin, southern Brazil]]></article-title>
<source><![CDATA[Brazilian Journal of Biology]]></source>
<year>2015</year>
<volume>75</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>98-104</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bharti]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Katyal]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water quality indices used for surface water vulnerability assessment]]></article-title>
<source><![CDATA[International Journal of Environmental Sciences]]></source>
<year>2011</year>
<volume>2</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>154-73</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bhatti]]></surname>
<given-names><![CDATA[M. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Latif]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessment of water quality of a river using an indexing approach during the low-flow season]]></article-title>
<source><![CDATA[Irrigation and Drainage]]></source>
<year>2011</year>
<volume>60</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>103-14</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Blume]]></surname>
<given-names><![CDATA[K. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Macedo]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Meneguzzi]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[L. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Quevedo]]></surname>
<given-names><![CDATA[D. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodrigues]]></surname>
<given-names><![CDATA[M. A. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water quality assessment of the Sinos River, Southern Brazil]]></article-title>
<source><![CDATA[Brazilian Journal of Biology]]></source>
<year>2010</year>
<volume>70</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>1185-93</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brown]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Macclelland]]></surname>
<given-names><![CDATA[N. I.]]></given-names>
</name>
<name>
<surname><![CDATA[Deininger]]></surname>
<given-names><![CDATA[R. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Tozer]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water Quality Index Do We Dare?]]></article-title>
<source><![CDATA[Water &amp; Sewage Works]]></source>
<year>1970</year>
<volume>117</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>339-43</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Buzelli]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Bianchessi]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Cunha-Santino]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Análise e diagnóstico da qualidade da água e estado trófico do reservatório de Barra Bonita. SP.]]></article-title>
<source><![CDATA[Ambiente &amp; Água-An Interdisciplinary Journal of Applied Science]]></source>
<year>2013</year>
<volume>8</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>186-205</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Camargo-Valero]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz-Torres]]></surname>
<given-names><![CDATA[L. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sustancias húmicas en aguas para abastecimiento]]></article-title>
<source><![CDATA[Revista Ingeniería e Investigación]]></source>
<year>1999</year>
<numero>44</numero>
<issue>44</issue>
<page-range>63-72</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Caruso]]></surname>
<given-names><![CDATA[B. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Temporal and spatial patterns of extreme low flows and effects on stream ecosystem in Otago, New Zealand]]></article-title>
<source><![CDATA[Journal of Hydrology]]></source>
<year>2002</year>
<volume>257</volume>
<numero>1-4</numero>
<issue>1-4</issue>
<page-range>115-33</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Choque-Quispe]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Ligarda-Samanez]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramos-Pacheco]]></surname>
<given-names><![CDATA[B. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Solano-Reynoso]]></surname>
<given-names><![CDATA[A. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Choque-Quispe]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Peralta-Guevara]]></surname>
<given-names><![CDATA[D. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Quispe-Quispe]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimization of the flocculating capacity of natural coagulants in water treatment]]></article-title>
<source><![CDATA[DYNA]]></source>
<year>2020</year>
<volume>87</volume>
<numero>212</numero>
<issue>212</issue>
<page-range>90-5</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chung]]></surname>
<given-names><![CDATA[Y. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Y. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[C. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pollutant removal from aquaculture wastewater using the biopolymer chitosan at different molecular weights]]></article-title>
<source><![CDATA[Journal of Environmental Science and Health]]></source>
<year>2005</year>
<volume>40</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>1775-90</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cieszynska]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Wesolowski]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bartoszewicz]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Michalska]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Nowacki]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Application of physicochemical data for water-quality assessment of watercourses in the Gdansk Municipality (South Baltic coast)]]></article-title>
<source><![CDATA[Environmental monitoring and Assessment]]></source>
<year>2012</year>
<volume>184</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>2017-29</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cotorro]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Gamarra]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Barboza]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación multivariante de la calidad del agua en la cuenca del Utcubamba (Perú)]]></article-title>
<source><![CDATA[Tecnología y ciencias del agua]]></source>
<year>2018</year>
<volume>9</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>33-57</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[De Maria]]></surname>
<given-names><![CDATA[C. A. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Moreira]]></surname>
<given-names><![CDATA[R. F. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cafeína: revisão sobre métodos de análise]]></article-title>
<source><![CDATA[Química Nova]]></source>
<year>2007</year>
<volume>30</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>99-105</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dhawde]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Surve]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Macaden]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Wennberg]]></surname>
<given-names><![CDATA[A. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Seifert-Dähnn]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Ghadge]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Birdi]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Physicochemical and bacteriological analysis of water quality in drought prone areas of Pune and Satara districts of Maharashtra, India]]></article-title>
<source><![CDATA[Environments]]></source>
<year>2018</year>
<volume>61</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1-20</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dinius]]></surname>
<given-names><![CDATA[S. H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Design of an Index of Water Quality]]></article-title>
<source><![CDATA[Water Resources Bulletin]]></source>
<year>1987</year>
<volume>23</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>833-43</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Feria-Díaz]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Náder-Salgado]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Meza-Pérez]]></surname>
<given-names><![CDATA[S. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Deoxygenation and re-aeration rates of the Sinu River]]></article-title>
<source><![CDATA[Ingeniería y Desarrollo]]></source>
<year>2017</year>
<volume>35</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>1-17</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Froehner]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Machado]]></surname>
<given-names><![CDATA[K. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Botelho]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Cordova-Da-Rosa]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Tracking anthropogenic inputs biomarkers in Barigui River-Brazil]]></article-title>
<source><![CDATA[J. Water, Air, &amp; Soil Pollution]]></source>
<year>2010</year>
<volume>210</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>33-41</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gamarra-Torres]]></surname>
<given-names><![CDATA[O. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Barrena-Gurbillón]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Barboza-Castillo]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Rascón-Barrios]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Corroto]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Taramona-Ruiz]]></surname>
<given-names><![CDATA[L. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fuentes de contaminación estacionales en la cuenca del río Utcubamba, región Amazonas, Perú]]></article-title>
<source><![CDATA[Arnaldoa]]></source>
<year>2018</year>
<volume>25</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>179-94</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Caicedo]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Aguirre]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Aplicación de los índices de calidad de agua NSF, DINIUS y BMWP]]></article-title>
<source><![CDATA[Gestión y Ambiente]]></source>
<year>2013</year>
<volume>16</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>97-108</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Horton]]></surname>
<given-names><![CDATA[R. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[An index-number system for rating water quality]]></article-title>
<source><![CDATA[Journal of the Water Pollution Control Federation]]></source>
<year>1965</year>
<volume>37</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>300-6</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hussein]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Ali]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water quality assessment of Al-Gharraf River, South of Iraq using multivariate statistical techniques]]></article-title>
<source><![CDATA[Journal of Al-Nahrain University]]></source>
<year>2017</year>
<volume>20</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>114-22</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jacobsen]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Brodersen]]></surname>
<given-names><![CDATA[K. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Are altitudinal limits of equatorial stream insects reflected in their respiratory performance?]]></article-title>
<source><![CDATA[Freshwater Biology]]></source>
<year>2008</year>
<volume>53</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>2295-308</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Linden]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Antunes]]></surname>
<given-names><![CDATA[M. V.]]></given-names>
</name>
<name>
<surname><![CDATA[Heinzelmann]]></surname>
<given-names><![CDATA[L. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Fleck]]></surname>
<given-names><![CDATA[J. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Staggemeier]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Fabres]]></surname>
<given-names><![CDATA[R. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Vecchia]]></surname>
<given-names><![CDATA[A. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Nascimento]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Spilki]]></surname>
<given-names><![CDATA[F. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Caffeine as an indicator of human fecal contamination in the Sinos River: A preliminary study]]></article-title>
<source><![CDATA[Brazilian Journal of Biology]]></source>
<year>2015</year>
<volume>75</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>81-4</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="book">
<collab>Ministerio del Ambiente</collab>
<source><![CDATA[Estándares de Calidad Ambiental (ECA), Decreto Supremo N° 004-2017-MINAM-Perú]]></source>
<year>2017</year>
<page-range>10</page-range><publisher-loc><![CDATA[Magdalena del Mar, Perú ]]></publisher-loc>
<publisher-name><![CDATA[Ministerio del Ambiente]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Montoya]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Loaiza]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[C. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Escobar]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Efecto del incremento en la turbiedad del agua cruda sobre la eficiencia de procesos convencionales de potabilización]]></article-title>
<source><![CDATA[Revista EIA]]></source>
<year>2011</year>
<volume>16</volume>
<page-range>137-48</page-range></nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mophin-Kani]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Murugesan]]></surname>
<given-names><![CDATA[A. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation and classification of water quality of perennial river Tamirabarani through aggregation of water quality index]]></article-title>
<source><![CDATA[International Journal of Environmental Protection]]></source>
<year>2011</year>
<volume>1</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>24-33</page-range></nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Olsen]]></surname>
<given-names><![CDATA[R. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Chappell]]></surname>
<given-names><![CDATA[R. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Loftis]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water quality sample collection, data treatment and results presentation for principal components analysis-literature review and Illinois River watershed case study]]></article-title>
<source><![CDATA[Water Research]]></source>
<year>2012</year>
<volume>46</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>3110-22</page-range></nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ospina-Zúñiga]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[García-Cobas]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Gordillo-Rivera]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Tovar-Hernández]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación de la turbiedad y la conductividad ocurrida en temporada seca y de lluvia en el río Combeima (Ibagué, Colombia)]]></article-title>
<source><![CDATA[Ingeniería Solidaria]]></source>
<year>2016</year>
<volume>12</volume>
<numero>19</numero>
<issue>19</issue>
<page-range>19-36</page-range></nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Páez-Sánchez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Alfaro-Cuevas]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Cortés-Martínez]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Segovia]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Arsenic content and physicochemical parameters of water from wells and thermal springs at Cuitzeo Lake Basin, Mexico]]></article-title>
<source><![CDATA[International Journal of Innovative Research in Science, Engineering and Technology]]></source>
<year>2013</year>
<volume>2</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>7731-40</page-range></nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Peeler]]></surname>
<given-names><![CDATA[K. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Opsahl]]></surname>
<given-names><![CDATA[S. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Chanton]]></surname>
<given-names><![CDATA[J. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Tracking anthropogenic inputs using caffeine, indicator bacteria, and nutrients in rural freshwater and urban marine systems]]></article-title>
<source><![CDATA[Environmental Science &amp; Technology]]></source>
<year>2006</year>
<volume>40</volume>
<numero>24</numero>
<issue>24</issue>
<page-range>7616-22</page-range></nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Prakirake]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Chaiprasert]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Tripetchkul]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Development of specific water quality index for water supply in Thailand]]></article-title>
<source><![CDATA[Songklanakarin Journal of Science and Technology]]></source>
<year>2009</year>
<volume>31</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>91-104</page-range></nlm-citation>
</ref>
<ref id="B38">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Quiroz]]></surname>
<given-names><![CDATA[L. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Izquierdo]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Menéndez]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Aplicación del índice de calidad de agua en el río Portoviejo, Ecuador]]></article-title>
<source><![CDATA[Ingeniería Hidráulica y Ambiental]]></source>
<year>2017</year>
<volume>38</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>41-51</page-range></nlm-citation>
</ref>
<ref id="B39">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rivera]]></surname>
<given-names><![CDATA[J. V.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation of organic matter in the cold river supported in QUAL2K version 2.07]]></article-title>
<source><![CDATA[DYNA]]></source>
<year>2011</year>
<volume>78</volume>
<numero>169</numero>
<issue>169</issue>
<page-range>131-9</page-range></nlm-citation>
</ref>
<ref id="B40">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodríguez-Gil]]></surname>
<given-names><![CDATA[J. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Cáceres]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Dafouza]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Valcárcel]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Caffeine and paraxanthine in aquatic systems: Global exposure distributions and probabilistic risk assessment]]></article-title>
<source><![CDATA[Science of the Total Environment]]></source>
<year>2018</year>
<volume>612</volume>
<page-range>1058-71</page-range></nlm-citation>
</ref>
<ref id="B41">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rubio-Arias]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Contreras-Carveo]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Quintana]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Saucedo-Teran]]></surname>
<given-names><![CDATA[R. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Pinales-Munguia]]></surname>
<given-names><![CDATA[A. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[An Overall Water Quality Index (WQI) for a Man-Made Aquatic Reservoir in Mexico]]></article-title>
<source><![CDATA[International Journal of Environmental Research and Public Health]]></source>
<year>2012</year>
<volume>9</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1687-98</page-range></nlm-citation>
</ref>
<ref id="B42">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rubio-Arias]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Ochoa-Rivero]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ortiz-Delgado]]></surname>
<given-names><![CDATA[R. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Quintana]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Saucedo-Terán]]></surname>
<given-names><![CDATA[R. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Villalba]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water quality using physical-chemical and metal parameters in three contrasting locations of the Conchos river in Chihuahua, Mexico]]></article-title>
<source><![CDATA[Investigación y Ciencia]]></source>
<year>2017</year>
<volume>25</volume>
<numero>70</numero>
<issue>70</issue>
<page-range>13-22</page-range></nlm-citation>
</ref>
<ref id="B43">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sanders]]></surname>
<given-names><![CDATA[N. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Elevational gradients in ant species richness: Area, geometry and Rapoport´s rule]]></article-title>
<source><![CDATA[Ecography]]></source>
<year>2002</year>
<volume>25</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>25-32</page-range></nlm-citation>
</ref>
<ref id="B44">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Soon]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Seok]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A water quality modeling study of the Nakdong River, Korea]]></article-title>
<source><![CDATA[Ecological Modelling]]></source>
<year>2002</year>
<volume>152</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>65-75</page-range></nlm-citation>
</ref>
<ref id="B45">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tebbutt]]></surname>
<given-names><![CDATA[T. H. Y]]></given-names>
</name>
</person-group>
<source><![CDATA[Principles of water quality control]]></source>
<year>1998</year>
<edition>5</edition>
</nlm-citation>
</ref>
<ref id="B46">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Patiño]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Índices de calidad de agua en fuentes superficiales utilizadas en la producción de agua para consumo humano. Una revisión crítica]]></article-title>
<source><![CDATA[Revista Ingenierías Universidad de Medellín]]></source>
<year>2009</year>
<volume>8</volume>
<numero>15</numero>
<issue>15</issue>
<page-range>79-94</page-range></nlm-citation>
</ref>
<ref id="B47">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Patiño]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Escobar]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Applying water quality indexes (WQI) to the use of water sources for human consumption]]></article-title>
<source><![CDATA[Ingeniería e Investigación]]></source>
<year>2010</year>
<volume>30</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>86-95</page-range></nlm-citation>
</ref>
<ref id="B48">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tully]]></surname>
<given-names><![CDATA[K. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Lawrence]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Scanlon]]></surname>
<given-names><![CDATA[T. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[More trees less loss: Nitrogen leaching losses decrease with increasing biomass in coffee agroforests]]></article-title>
<source><![CDATA[Agriculture, Ecosystems and Environment]]></source>
<year>2012</year>
<volume>161</volume>
<page-range>137-44</page-range></nlm-citation>
</ref>
<ref id="B49">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Valenzuela]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Godoy]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Almonacid]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Barrientos]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Calidad microbiológica del agua de un área agrícola-ganadera del centro sur de Chile y su posible implicancia en la salud humana]]></article-title>
<source><![CDATA[Revista Chilena de Infectología]]></source>
<year>2012</year>
<volume>29</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>628-34</page-range></nlm-citation>
</ref>
<ref id="B50">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vieira]]></surname>
<given-names><![CDATA[J. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Pires]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Martins]]></surname>
<given-names><![CDATA[F. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Vilar]]></surname>
<given-names><![CDATA[V. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Boaventura]]></surname>
<given-names><![CDATA[R. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Botelho]]></surname>
<given-names><![CDATA[C. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Surface water quality assessment of Lis River using multivariate statistical methods]]></article-title>
<source><![CDATA[Water, Air, &amp; Soil Pollution]]></source>
<year>2012</year>
<volume>223</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>5549-61</page-range></nlm-citation>
</ref>
<ref id="B51">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Webb]]></surname>
<given-names><![CDATA[B. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Hannah]]></surname>
<given-names><![CDATA[D. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Dan-Moore]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Brown]]></surname>
<given-names><![CDATA[L. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Nobilis]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Recent advances in stream and river temperature research]]></article-title>
<source><![CDATA[Hydrological Processes]]></source>
<year>2008</year>
<volume>22</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>902-18</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
