<?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>S1870-34532021000100324</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2021.92.3713</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Composition, structure and diversity of tree and shrub strata in a tropical deciduous forest at Tehuacán Valley, Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Composición, estructura y diversidad de los estratos arbóreo y arbustivo en un bosque tropical caducifolio en el valle de Tehuacán, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Bernal]]></surname>
<given-names><![CDATA[Angélica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vasquez-Velasco]]></surname>
<given-names><![CDATA[Beatriz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Arriaga]]></surname>
<given-names><![CDATA[Elia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zárate-Hernández]]></surname>
<given-names><![CDATA[María del Rocío]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Hernández]]></surname>
<given-names><![CDATA[Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Téllez-Valdés]]></surname>
<given-names><![CDATA[Oswaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Metropolitana División de Ciencias Biológicas y de la Salud ]]></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 Facultad de Estudios Superiores Iztacala ]]></institution>
<addr-line><![CDATA[Tlanepantla de Baz Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>92</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532021000100324&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532021000100324&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532021000100324&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract An analysis of the floristic composition, structure and diversity of the tree and shrub strata was carried out at the tropical deciduous forest of El Picante hill, located in San José Tilapa, Puebla. Five transects (T1-T5) were located along the elevation range of 1,055 to 1,095 m asl and the &#8220;point-centred quarter&#8221; sampling method was used. A total of 53 taxa belonging to 47 genera and 28 families were recorded. The best-represented families were Fabaceae, Cactaceae, Asteraceae and Burseraceae. The main indicators in the tropical deciduous forest were those taxa with the highest importance value indexes (IVI), in the tree stratum were Ceiba aesculifolia, Bursera morelensis and B. aptera, while in the shrub stratum were Lippia graveolens, Parthenium fruticosum and Acaciella angustissima. T4 recorded the highest richness, on the other hand, T5 stood out by the presence of the greatest abundance of trees and shrubs. This study complements the structure and diversity knowledge of this ecosystem in Tehuacán Valley, México.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se llevó a cabo un análisis de la composición florística, estructura y diversidad de los estratos arbóreo y arbustivo en el bosque tropical caducifolio del cerro El Picante, ubicado en San José Tilapa, Puebla. Se estudiaron 5 transectos (T1-T5) a lo largo de un rango de elevación de 1,055 a 1,095 m snm y se utilizó el método de muestreo de cuadrantes centrados en un punto. Un total de 53 taxones pertenecientes a 47 géneros y 28 familias fueron registrados. Las familias mejor representadas fueron Fabaceae, Cactaceae, Asteraceae y Burseraceae. Los taxones con el mayor índice de valor de importancia (IVI) en el estrato arbóreo fueron Ceiba aesculifolia, Bursera morelensis y B. aptera, mientras que en el estrato arbustivo fueron Lippia graveolens, Parthenium. fruticosum y Acaciella angustissima. El transecto T4 registró la mayor riqueza y en T5 se cuantificó la mayor abundancia de árboles y arbustos. Este estudio complementa el conocimiento sobre la estructura y diversidad este ecosistema en el valle de Tehuacán, México.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Floristic composition]]></kwd>
<kwd lng="en"><![CDATA[Tropical dry deciduous forest]]></kwd>
<kwd lng="en"><![CDATA[Vertical and horizontal structure]]></kwd>
<kwd lng="en"><![CDATA[Semiarid ecosystem]]></kwd>
<kwd lng="en"><![CDATA[Tehuacán Valley]]></kwd>
<kwd lng="es"><![CDATA[Composición florística]]></kwd>
<kwd lng="es"><![CDATA[Selva baja caducifolia]]></kwd>
<kwd lng="es"><![CDATA[Estructura vertical y horizontal]]></kwd>
<kwd lng="es"><![CDATA[Ecosistema semiárido]]></kwd>
<kwd lng="es"><![CDATA[Valle de Tehuacán]]></kwd>
</kwd-group>
</article-meta>
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