<?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>1870-3453</journal-id>
<journal-title><![CDATA[Revista mexicana de biodiversidad]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Biodiv.]]></abbrev-journal-title>
<issn>1870-3453</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Biología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-34532022000100304</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2022.93.3899</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[The Macroalgae Ecological Quality Index (MEQI) in the Basin of Mexico: a proposal of aquatic bioindicators for peri-urban rivers]]></article-title>
<article-title xml:lang="es"><![CDATA[El Índice de Calidad Ecológica de Macroalgas (MEQI) en la cuenca de México: una propuesta de bioindicadores acuáticos en ríos periurbanos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carmoma-Jiménez]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salinas-Camarillo]]></surname>
<given-names><![CDATA[Victor Hugo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caro-Borrero]]></surname>
<given-names><![CDATA[Angela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias Departamento de Ecología y Recursos Naturales]]></institution>
<addr-line><![CDATA[Coyoacán Mexico City]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Posgrado en Ciencias del Mar y Limnología ]]></institution>
<addr-line><![CDATA[Coyoacán Mexico City]]></addr-line>
<country>Mexico</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>93</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532022000100304&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532022000100304&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532022000100304&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract We assessed macroalgal responses to anthropogenic pressures in the Basin of Mexico to examine whether these biological indicators exhibited a discriminatory and explanatory correlation with ecological quality and propose the &#8220;Macroalgae Ecological Quality Index&#8221; (MEQI). The proposal included 3 steps: i) characterization of trophic level and hydromorphological quality (HQ) in 13 sub-basins consisting of 49 sites with different degrees of conservation sampled between 2012 and 2016, ii) calculation of indicator values for 20 taxa to generate the proposed algorithm, and iii) validation of the algorithm in 26 new sites and calculation of its correlation with water quality and HQ. The ecological quality gradient to which the macroalgae responded was related to oxygen saturation, soluble reactive phosphorus, dissolved inorganic nitrogen, and hydromorphological quality. By assigning an indicator value to each group of species, we calculated the MEQI using the formula adapted from Pantle and Buck, indicating 5 different ecological quality classes. The MEQI index allowed us to establish references for good quality sites and altered sites with regards to chemical composition and structure. Therefore, the MEQI is recommended for biomonitoring in the Basin of Mexico and registering multiple environmental stressors.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se evaluó la respuesta de las macroalgas a las diversas presiones antropogénicas en la cuenca de México para verificar si exhibían una correlación discriminatoria y explicativa para la evaluación ecológica y la propuesta del &#8220;Índice de Calidad Ecológica de las Macroalgas&#8221; (MEQI). La propuesta incluyó 3 pasos: i) caracterización del nivel trófico y calidad hidromormofológica (HQ) en 13 sub-cuencas con 49 sitios colectados entre 2012 y 2016 y que representan distintos estado de conservación, ii) cálculo del valor indicador de 20 taxones y la propuesta del algoritmo, y iii) validación del algoritmo en 26 nuevos sitios y su correlación con la calidad del agua y HQ. El gradiente de calidad ecológica al que respondieron las macroalgas estuvo relacionado con la saturación de oxígeno, el fósforo reactivo soluble, el nitrógeno inorgánico disuelto y la calidad hidromorfológica. Al asignar un valor indicador a cada grupo de especies, calculamos el MEQI utilizando la fórmula adaptada de Pantle y Buck, indicando 5 clases de calidad ecológica diferentes. El MEQI ha establecido sitios de referencia de buena calidad y aquellos alterados en la composición química y estructura. Por tanto, se recomiendan para el biomonitoreo en la cuenca de México y el registro de sus múltiples estresores.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Aquatic biomonitoring]]></kwd>
<kwd lng="en"><![CDATA[Ecological quality]]></kwd>
<kwd lng="en"><![CDATA[Macroalgae]]></kwd>
<kwd lng="en"><![CDATA[Montane rivers]]></kwd>
<kwd lng="en"><![CDATA[Mexican Biotic Index]]></kwd>
<kwd lng="es"><![CDATA[Biomonitoreo acuático]]></kwd>
<kwd lng="es"><![CDATA[Calidad ecológica]]></kwd>
<kwd lng="es"><![CDATA[Macroalgas]]></kwd>
<kwd lng="es"><![CDATA[Ríos de montaña]]></kwd>
<kwd lng="es"><![CDATA[Índice biótico mexicano]]></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[Acosta]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Ríos]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Rieradevall]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Prat]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Propuesta de un protocolo de evaluación de la calidad ecológica de ríos Andinos (CERA) y su aplicación a dos cuencas de Ecuador y Perú]]></article-title>
<source><![CDATA[Limnetica]]></source>
<year>2009</year>
<volume>2</volume>
<page-range>35-64</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Anagnostidis]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Komárek]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Oscillatoriales]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Budel]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Gartner]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Krienitz]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Schagerl]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Cyanoprokaryota]]></source>
<year>2005</year>
<page-range>1-759</page-range><publisher-loc><![CDATA[Berlin ]]></publisher-loc>
<publisher-name><![CDATA[Elsevier]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ávila-Akerberg]]></surname>
<given-names><![CDATA[V. D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Forest quality in the southwest of México City. Assessment towards ecological restoration of ecosystem services]]></source>
<year>2010</year>
<publisher-loc><![CDATA[Germany ]]></publisher-loc>
<publisher-name><![CDATA[Faculty of Forest and Environmental Sciences, University of Freiburg]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bojorge-García]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Carmona-Jiménez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Beltrán]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Cartajena]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Temporal and spatial distribution of macroalgal communities of mountain streams in Valle de Bravo Basin, central Mexico]]></article-title>
<source><![CDATA[Hydrobiologia]]></source>
<year>2010</year>
<volume>641</volume>
<page-range>59-169</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bonilla-Lemus]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Caballero-Villegas]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Carmona-Jimenez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Lugo-Vazquez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Occurrence of free-living amoebae in streams of the Mexico Basin]]></article-title>
<source><![CDATA[Experimental Parasitology]]></source>
<year>2014</year>
<volume>145</volume>
<page-range>28-33</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Borges]]></surname>
<given-names><![CDATA[F. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Necchi Jr.]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Patterns of spatial distribution in macroalgal communities from tropical lotic ecosystems]]></article-title>
<source><![CDATA[Brazilian Journal of Botany]]></source>
<year>2006</year>
<volume>29</volume>
<page-range>669-80</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Branco]]></surname>
<given-names><![CDATA[C. C. Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Bispo]]></surname>
<given-names><![CDATA[P. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Peres]]></surname>
<given-names><![CDATA[C. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Tonetto]]></surname>
<given-names><![CDATA[A. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Branco]]></surname>
<given-names><![CDATA[L. H. Z.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The roles of environmental conditions and spatial factors in controlling stream macroalgal communities]]></article-title>
<source><![CDATA[Hydrobiologia]]></source>
<year>2014</year>
<volume>732</volume>
<page-range>123-32</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carmona-Jiménez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Caro-Borrero]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The last peri-urban rivers of the Mexico Basin: establishment of the reference conditions through the evaluation of ecological quality and biological indicators]]></article-title>
<source><![CDATA[Revista Mexicana de Biodiversidad]]></source>
<year>2017</year>
<volume>88</volume>
<page-range>425-36</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carmona-Jiménez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Necchi Jr.]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Taxonomy and distribution of Paralemanea (Lemaneaceae, Rhodophyta) in Central Mexico]]></article-title>
<source><![CDATA[Cryptogamie Algologie]]></source>
<year>2002</year>
<volume>23</volume>
<page-range>39-49</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carmona-Jiménez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Vilaclara]]></surname>
<given-names><![CDATA[F. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Survey and distribution of Batrachospermaceae (Rhodophyta) in high-altitude tropical streams from central Mexico]]></article-title>
<source><![CDATA[Cryptogamie Algologie]]></source>
<year>2007</year>
<volume>28</volume>
<page-range>271-82</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Caro-Borrero]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Carmona-Jiménez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Varley]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[De Garay-Arellano]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Mazari-Hiriart]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Adams]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The potential of local and scientific ecological knowledge as a source of information in a periurban sub-basin: a case study from Mexico City]]></article-title>
<source><![CDATA[Applied Ecology and Environmental Research]]></source>
<year>2017</year>
<volume>15</volume>
<page-range>541-62</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dodds]]></surname>
<given-names><![CDATA[W. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[J. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Welch]]></surname>
<given-names><![CDATA[E. B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Suggested classification of stream trophic state: distributions of temperate stream types by chlorophyll, total nitrogen, and phosphorus]]></article-title>
<source><![CDATA[Water Research]]></source>
<year>1998</year>
<volume>32</volume>
<page-range>1455-62</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dodds]]></surname>
<given-names><![CDATA[W. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Misuse of inorganic N and soluble reactive P concentrations to indicate nutrient status of surface waters]]></article-title>
<source><![CDATA[Journal of the North American Benthological Society]]></source>
<year>2003</year>
<volume>22</volume>
<page-range>171-81</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="book">
<source><![CDATA[Norma Oficial Mexicana NOM-001-SEMARNAT-1996 (aclaración a la NOM-001-ECOL-1996), que establece los límites máximos permisibles de contaminantes en las descargas de aguas residuales en aguas y bienes nacionales]]></source>
<year>2003</year>
<publisher-name><![CDATA[DOF (Diario Oficial de la Federación)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dufrené]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Legendre]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Species assemblages and indicator species: the need for a flexible asymmetrical approach]]></article-title>
<source><![CDATA[Ecological Monographs]]></source>
<year>1997</year>
<volume>67</volume>
<page-range>345-66</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ettl]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Gartner]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chlorophyta II]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Pascher]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ettl]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Gerloff]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Heynig]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Mollenhauer]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Tetrasporales, Chlorococclales, Gloeodendrales. Subwasserflora von Mitteleuropa]]></source>
<year>1988</year>
<page-range>1-807</page-range><publisher-loc><![CDATA[Berlin ]]></publisher-loc>
<publisher-name><![CDATA[Gustav Fischer Verlag]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<collab>European Commission</collab>
<article-title xml:lang=""><![CDATA[Directive 2000/60/EC of The European Parliament and of the Council- Establishing a framework for community action in the field of water policy]]></article-title>
<source><![CDATA[Official Journal of the European Communities]]></source>
<year>2000</year>
<publisher-loc><![CDATA[Brussels, Belgium ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ferrusquía-Villafranca]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Geología de México: una sinopsis]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Ramamoorthy]]></surname>
<given-names><![CDATA[T. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Bye]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Lot]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Fa]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Diversidad biológica de México. Orígenes y distribución]]></source>
<year>1998</year>
<page-range>3-108</page-range><publisher-loc><![CDATA[Ciudad de México ]]></publisher-loc>
<publisher-name><![CDATA[Instituto de Biología, UNAM]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Flor-Arnau]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Real]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Cambra]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Moreno]]></surname>
<given-names><![CDATA[J. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Solá]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Índice de macrófitos fluviales (IMF), una nueva herramienta para evaluar el estado ecológico de los ríos mediterráneos]]></article-title>
<source><![CDATA[Limnetica]]></source>
<year>2015</year>
<volume>34</volume>
<page-range>95-114</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Modificaciones al sistema de clasificación climática de Köppen]]></source>
<year>2004</year>
<publisher-loc><![CDATA[Ciudad de México ]]></publisher-loc>
<publisher-name><![CDATA[Instituto de Geografía, Universidad Nacional Autónoma de México]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="book">
<collab>GDF</collab>
<source><![CDATA[Atlas geográfico del suelo de conservación del Distrito Federal. Ciudad de México]]></source>
<year>2012</year>
<publisher-loc><![CDATA[Ciudad de México, México ]]></publisher-loc>
<publisher-name><![CDATA[GDF]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="book">
<collab>Hach Company</collab>
<source><![CDATA[Water analysis handbook]]></source>
<year>2003</year>
<edition>4th</edition>
<publisher-loc><![CDATA[Loveland, Colorado, USA ]]></publisher-loc>
<publisher-name><![CDATA[Hach Co.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hammer]]></surname>
<given-names><![CDATA[Ø.]]></given-names>
</name>
<name>
<surname><![CDATA[Harper]]></surname>
<given-names><![CDATA[D. A. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Ryan]]></surname>
<given-names><![CDATA[P. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[PAST]]></article-title>
<source><![CDATA[Paleontologia Electronica]]></source>
<year>2001</year>
<volume>4</volume>
<page-range>1-9</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="book">
<collab>INEGI</collab>
<source><![CDATA[Conjunto de datos vectoriales de uso del suelo y vegetación, escala 1:250 000]]></source>
<year>2013</year>
<publisher-loc><![CDATA[Cd. de México ]]></publisher-loc>
<publisher-name><![CDATA[INEGI]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Karr]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Defining and assessing ecological integrity: Beyond water quality]]></article-title>
<source><![CDATA[Environmental Toxicology and Chemistry]]></source>
<year>1993</year>
<volume>12</volume>
<page-range>1521-31</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kelly]]></surname>
<given-names><![CDATA[M. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Data rich, information poor? Phytobenthos assessment and the Water Framework Directive]]></article-title>
<source><![CDATA[European Journal of Phycology]]></source>
<year>2013</year>
<volume>48</volume>
<page-range>437-50</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Komárek]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heterocytous Genera]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Budel]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Gartner]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Krienitz]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Schagerl]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Cyanoprokaryota]]></source>
<year>2013</year>
<volume>19</volume>
<page-range>1-1131</page-range><publisher-loc><![CDATA[Berlin ]]></publisher-loc>
<publisher-name><![CDATA[Springer Spektrum]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Legorreta]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Ríos, lagos y manantiales del valle de México]]></source>
<year>2009</year>
<publisher-loc><![CDATA[Ciudad de México, México ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Autónoma Metropolitana]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Loza]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Perona]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Carmona-Jiménez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Mateo]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Phenotypic and genotypic characteristics of Phormidium-like cyanobacteria inhabiting microbial mats are correlated with the trophic status of running waters]]></article-title>
<source><![CDATA[European Journal of Phycology]]></source>
<year>2013</year>
<volume>48</volume>
<page-range>235-52</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mazari-Hiriart]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez-Ortíz]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Orta-Ledesma]]></surname>
<given-names><![CDATA[M. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Armas-Vargas]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Tapia]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Solano-Ortiz]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Final opportunity to rehabilitate an urban river as a water source for Mexico City]]></article-title>
<source><![CDATA[Plos One]]></source>
<year>2014</year>
<volume>9</volume>
<page-range>1-17</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mehta]]></surname>
<given-names><![CDATA[S. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Gaur]]></surname>
<given-names><![CDATA[J. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Use of algae for removing heavy metals ions from wastewater: progress and prospects]]></article-title>
<source><![CDATA[Critical Reviews Biotechnology]]></source>
<year>2005</year>
<volume>25</volume>
<page-range>113-52</page-range></nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nardini]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sansoni]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Schipani]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Conte]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Goltara]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Boz]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<source><![CDATA[The Water Framework Directive: a soap bubble? An integrative proposal: FLEA (Fluvial Ecosystem Assessment)]]></source>
<year>2008</year>
<publisher-loc><![CDATA[Venice ]]></publisher-loc>
<publisher-name><![CDATA[Centro Italiano per la Riqualificazione Fluviale]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Necchi]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Branco]]></surname>
<given-names><![CDATA[L. H. Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Branco]]></surname>
<given-names><![CDATA[C. C. Z.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparison of three techniques for estimating periphyton abundance in bedrock streams]]></article-title>
<source><![CDATA[Archiv fu&#776;r Hydrobiologie]]></source>
<year>1995</year>
<volume>134</volume>
<page-range>393-402</page-range></nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Oksanen]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Blanchet]]></surname>
<given-names><![CDATA[F. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Friendly]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Kindt]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Legendre]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[McGlinn]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<source><![CDATA[vegan: Community Ecology Package. R package version 2.5-6]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pantle]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Buck]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Die biologische Überwachung der Gewässer und die Darstellung der Ergebnisse]]></article-title>
<source><![CDATA[Gas-und Wasserfach Wasser und Abwasser]]></source>
<year>1955</year>
<volume>96</volume>
<page-range>609-20</page-range></nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pawlik-Skowro&#324;ska]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[When adapted to high zinc concentrations the periphytic green alga Stigeoclonium tenue produces high amounts of novel phytochelatin-related peptides]]></article-title>
<source><![CDATA[Aquatic Toxicology]]></source>
<year>2003</year>
<volume>62</volume>
<page-range>155-63</page-range></nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Poikane]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Kelly]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Cantonati]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Benthic algal assessment of ecological status in European lakes and rivers: Challenges and opportunities]]></article-title>
<source><![CDATA[Science of the Total Environment]]></source>
<year>2016</year>
<volume>568</volume>
<page-range>603-13</page-range></nlm-citation>
</ref>
<ref id="B38">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rice]]></surname>
<given-names><![CDATA[E. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Baird]]></surname>
<given-names><![CDATA[R. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Eaton]]></surname>
<given-names><![CDATA[A. D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Standard methods for examination of water and wastewater]]></source>
<year>2017</year>
<edition>23rd</edition>
<publisher-loc><![CDATA[Washington, D.C. ]]></publisher-loc>
<publisher-name><![CDATA[Port City Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B39">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rieth]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Xathophyceae, 2. Teil]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Ettl]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Gerloff]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Heynig]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Subwasserflora von Mitteleuropa]]></source>
<year>1980</year>
<page-range>1-147</page-range><publisher-loc><![CDATA[Stuttgart ]]></publisher-loc>
<publisher-name><![CDATA[G. Fischer Verlag]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B40">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rocha]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Peres]]></surname>
<given-names><![CDATA[C. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Buzzo]]></surname>
<given-names><![CDATA[J. L. L.]]></given-names>
</name>
<name>
<surname><![CDATA[de Souza]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Krause]]></surname>
<given-names><![CDATA[E. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Bispo]]></surname>
<given-names><![CDATA[P. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modeling the species richness and abundance of lotic macroalgae based on habitat characteristics by artificial neural networks: a potentially useful tool for stream biomonitoring programs]]></article-title>
<source><![CDATA[Journal of Applied Phycology]]></source>
<year>2017</year>
<volume>29</volume>
<page-range>2145-53</page-range></nlm-citation>
</ref>
<ref id="B41">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodríguez-Flores]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Carmona-Jiménez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ecology and distribution of macroscopic algae communities in streams from the Basin of Mexico]]></article-title>
<source><![CDATA[Botanical Science]]></source>
<year>2018</year>
<volume>96</volume>
<page-range>63-75</page-range></nlm-citation>
</ref>
<ref id="B42">
<nlm-citation citation-type="">
<collab>RStudio Team</collab>
<source><![CDATA[RStudio: integrated development for R. RStudio, Inc.]]></source>
<year>2019</year>
<publisher-loc><![CDATA[Boston, MA, USA ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B43">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sanchez]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ecosistemas acuaticos: diversidad, procesos, problematica y conservacion]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Sanchez]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Herzig]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Peters]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Marquez-Huitzil]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Zambrano]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Perspectivas sobre conservacion de ecosistemas acuaticos en Mexico (pp. 11-36). Ciudad de México]]></source>
<year>2007</year>
<publisher-loc><![CDATA[Ciudad de México ]]></publisher-loc>
<publisher-name><![CDATA[Instituto Nacional de Ecologia-Secretaría de Medio Ambiente y Recursos Naturales]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B44">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Santos-Cerquera]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Aguilar]]></surname>
<given-names><![CDATA[A. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Expansión urbana en el suelo de conservación]]></article-title>
<collab>Conabio</collab>
<collab>SEDEMA</collab>
<source><![CDATA[La biodiversidad en la Ciudad de México]]></source>
<year>2016</year>
<volume>I</volume>
<page-range>127-38</page-range><publisher-loc><![CDATA[Ciudad de México ]]></publisher-loc>
<publisher-name><![CDATA[Conabio/ SEDEMA]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B45">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schneider]]></surname>
<given-names><![CDATA[S. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Lindstrøm]]></surname>
<given-names><![CDATA[E. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bioindication in Norwegian rivers using non-diatomaceous benthic algae: the acidification index periphyton (AIP)]]></article-title>
<source><![CDATA[Ecological Indicators]]></source>
<year>2009</year>
<volume>9</volume>
<page-range>1206-11</page-range></nlm-citation>
</ref>
<ref id="B46">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schneider]]></surname>
<given-names><![CDATA[S. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Lindstrøm]]></surname>
<given-names><![CDATA[E. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The periphyton index of trophic status PIT: a new eutrophication metric based on non-diatomaceous benthic algae in Nordic rivers]]></article-title>
<source><![CDATA[Hydrobiologia]]></source>
<year>2011</year>
<volume>665</volume>
<page-range>143-55</page-range></nlm-citation>
</ref>
<ref id="B47">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Segnini]]></surname>
<given-names><![CDATA[S. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[El uso de los macroinvertebrados bentónicos como indicadores de la condición ecológica de los cuerpos de agua corriente]]></article-title>
<source><![CDATA[Ecotropicos]]></source>
<year>2002</year>
<volume>16</volume>
<page-range>45-63</page-range></nlm-citation>
</ref>
<ref id="B48">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sheath]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Cole]]></surname>
<given-names><![CDATA[K. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biogeography of stream macroalgae in North America]]></article-title>
<source><![CDATA[Journal of Phycology]]></source>
<year>1992</year>
<volume>28</volume>
<page-range>448-60</page-range></nlm-citation>
</ref>
<ref id="B49">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Stancheva]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Sheath]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Benthic soft-bodied algae as bioindicators of stream water quality]]></article-title>
<source><![CDATA[Knowledge and Management of Aquatic Ecosystems]]></source>
<year>2016</year>
<volume>417</volume>
<page-range>15</page-range></nlm-citation>
</ref>
<ref id="B50">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Stoddard]]></surname>
<given-names><![CDATA[J. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Larsen]]></surname>
<given-names><![CDATA[D. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Hawkins]]></surname>
<given-names><![CDATA[C. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Johnson]]></surname>
<given-names><![CDATA[R. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Norris]]></surname>
<given-names><![CDATA[R. H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Setting expectations for the ecological condition of streams: the concept of reference condition]]></article-title>
<source><![CDATA[Ecological Applications]]></source>
<year>2006</year>
<volume>16</volume>
<page-range>1267-76</page-range></nlm-citation>
</ref>
<ref id="B51">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Strunecký]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Komárek]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Johansen]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Luke&#353;ová]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Elster]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Molecular and morphological criteria for revision of the genus Microcoleus (Oscillatoriales, Cyanobacteria)]]></article-title>
<source><![CDATA[Journal of Phycology]]></source>
<year>2013</year>
<volume>49</volume>
<page-range>1167-80</page-range></nlm-citation>
</ref>
<ref id="B52">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tornés]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Cambra]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Gomà]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Leira]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ortiz]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Sabater]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Indicator taxa of benthic diatom communities: a case study in Mediterranean streams]]></article-title>
<source><![CDATA[Journal of Limnology]]></source>
<year>2007</year>
<volume>43</volume>
<page-range>1-11</page-range></nlm-citation>
</ref>
<ref id="B53">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wallin]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Wiederholm]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Johnson]]></surname>
<given-names><![CDATA[R. K.]]></given-names>
</name>
</person-group>
<source><![CDATA[Guidance on establishing reference conditions and ecological status class boundaries for inland surface waters]]></source>
<year>2003</year>
<volume>2</volume>
<page-range>93</page-range><publisher-name><![CDATA[CIS Working Group]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B54">
<nlm-citation citation-type="journal">
<collab>WFD</collab>
<article-title xml:lang=""><![CDATA[Directive 2000/60/ EC of the European Parliament and of the Council of 23 October 2000 establishing a framework for Community action in the field of water policy]]></article-title>
<source><![CDATA[Official Journal of the European Communities L]]></source>
<year>2000</year>
<volume>327</volume>
<page-range>1-73</page-range></nlm-citation>
</ref>
<ref id="B55">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wher]]></surname>
<given-names><![CDATA[J. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Sheath]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Freshwater algae of North America: ecology and classification]]></source>
<year>2003</year>
<publisher-loc><![CDATA[Amsterdam, Boston ]]></publisher-loc>
<publisher-name><![CDATA[Academic Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B56">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wickham]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[ggplot2: Elegant graphics for data analysis]]></source>
<year>2016</year>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Springer-Verlag]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B57">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zuccarello]]></surname>
<given-names><![CDATA[G. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Lokhorst]]></surname>
<given-names><![CDATA[G. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Molecular phylogeny of the genus Tribonema (Xanthophyceae) using rbcL gene sequence data: monophyly of morphologically simple algal species]]></article-title>
<source><![CDATA[Phycologia]]></source>
<year>2005</year>
<volume>44</volume>
<page-range>384-92</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
