<?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>S1870-34532019000100628</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2019.90.2996</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Historia de la vegetación, ambiente y evidencia de actividad humana de los últimos 6,000 años en el lago alpino La Luna, Nevado de Toluca]]></article-title>
<article-title xml:lang="en"><![CDATA[Vegetation history, environment and evidence of human activity during the last 6,000 years from the alpine lake La Luna, Nevado de Toluca]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Cordova]]></surname>
<given-names><![CDATA[Juan Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lozano-García]]></surname>
<given-names><![CDATA[Socorro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caballero]]></surname>
<given-names><![CDATA[Margarita]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Figueroa-Rangel]]></surname>
<given-names><![CDATA[Blanca Lorena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sosa-Nájera]]></surname>
<given-names><![CDATA[Susana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Vázquez]]></surname>
<given-names><![CDATA[Martín Salvador]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geología ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geología ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geofísica ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Guadalajara Centro Universitario de la Costa Sur Departamento de Ecología y Recursos Naturales]]></institution>
<addr-line><![CDATA[Autlán de Navarro Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>90</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532019000100628&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532019000100628&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532019000100628&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El registro sedimentario del lago La Luna, proporciona evidencias sobre la dinámica de la vegetación y el cambio climático durante los últimos 6000 años cal AP (calibrados antes del presente). Se realizaron análisis palinológicos, geoquímicos y material carbonizado para describir los cambios en las comunidades y el ambiente. El registro paleoecológico inició con el establecimiento de elementos del pastizal alpino. El espectro polínico muestra la existencia de bosques de coníferas y de Quercus entre 6000 y 4700 años cal AP, asociados con condiciones climáticas húmedas y baja frecuencia de incendios forestales. Entre 4700 a 2000 años cal AP, hay ambientes más secos, con incremento de incendios forestales y abundancia elevada de Pinus. Durante los últimos 2000 años cal AP, las variaciones en la vegetación muestran un aumento de Abies y una disminución de Pinus asociados con condiciones ambientales relativamente húmedas durante el Clásico (1-650 años dC), el aumento de Pinus en el registro paleoecológico sugiere condiciones climáticas más secas durante el Epiclásico (650-950 dC) y la Anomalía Climática Medieval (950 a 1300 dC). Durante la Pequeña Edad de Hielo (1300-1850 dC) se infieren ambientes fríos con una menor frecuencia de incendios El registro de Zea mays, sugiere actividad humana en el área de estudio desde el año 4680 cal AP.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The sedimentary record from alpine Lake La Luna provided evidences of the vegetation dynamics and climate change during the last 6000 cal yr BP (calibrated years before present). A combination of analyses, including palynology, geochemistry and charcoal, allow inferring changes in the plants communities and the environment. The record starts with the establishment of alpine grasslands. According to the pollen spectra, coniferous and Quercus forests developed between 6000 and 4700 cal yr BP associated to humid conditions and low fire forests frequency events. By 4700 to 2000 cal yr BP drier environments with increases in fires frequency and high abundance of Pinus pollen is recorded. During the last 2000 cal yr BP changes in vegetation includes increases in Abies and reduction in Pinus pollen that point to humid environmental conditions during the Classic (1-650 AD), whereas during the Epiclassic (650-950 AD) and the Medieval Anomaly (950 a 1300 AD) the Pinus pollen increased suggesting drier conditions. Cold climates with reduced frequency of fires events are inferred during the Little Ice Age (1300-1850 AD). Presence of maize pollen in the pollen record gives evidence human activities in the area since 4680 cal yr BP.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cambio climático]]></kwd>
<kwd lng="es"><![CDATA[Holoceno]]></kwd>
<kwd lng="es"><![CDATA[Palinología]]></kwd>
<kwd lng="es"><![CDATA[Incendios]]></kwd>
<kwd lng="es"><![CDATA[Lago alpino]]></kwd>
<kwd lng="en"><![CDATA[Climate change]]></kwd>
<kwd lng="en"><![CDATA[Holocene]]></kwd>
<kwd lng="en"><![CDATA[Palynology]]></kwd>
<kwd lng="en"><![CDATA[Fires]]></kwd>
<kwd lng="en"><![CDATA[Alpine lake]]></kwd>
</kwd-group>
</article-meta>
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