<?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>S1870-34532020000100215</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2020.91.3428</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación del riesgo de extinción de Beaucarnea pliabilis (Asparagaceae) (despeinada o tsiipil), especie endémica de la península de Yucatán]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of the extinction risk of Beaucarnea pliabilis (Asparagaceae) (despeinada or tsiipil), an endemic species of the Yucatan Peninsula]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espadas-Manrique]]></surname>
<given-names><![CDATA[Celene]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Linares]]></surname>
<given-names><![CDATA[Martín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orellana]]></surname>
<given-names><![CDATA[Roger]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peniche-Aké]]></surname>
<given-names><![CDATA[Stephany]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-García]]></surname>
<given-names><![CDATA[Casandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigación Científica de Yucatán, A.C. Unidad de Recursos Naturales ]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>91</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532020000100215&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532020000100215&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532020000100215&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Beaucarnea pliabilis es una especie endémica de la península de Yucatán, clasificada en 1994 por la NOM-059-ECOL-1994 como amenazada, debido a su fuerte extracción con fines comerciales y a la fragilidad de su hábitat. Si bien en los últimos años ha habido esfuerzos para su propagación ex situ, la destrucción de su hábitat ha avanzado. El objetivo de este estudio fue aplicar el &#8220;Método de evaluación de riesgo de especies silvestres en México&#8221; (MER) para poder revalorar la clasificación de esta especie. Se caracterizaron morfología y demografía de 6 poblaciones de B. pliabilis y se utilizaron series del INEGI para evaluar los cambios en el uso de suelo y su distribución utilizando bases de datos cercanos a su primera clasificación y al presente. Información adicional fue obtenida de herbarios y de la literatura. El valor total obtenido del MER fue de 2.312, lo cual, por estar encima de 2, la ubica en la categoría de &#8220;en peligro de extinción&#8221;. Las principales causas son la destrucción de su hábitat y su extracción, también por ser dioica y sin reproducción clonal, que dificultan su reproducción en condiciones naturales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Beaucarnea pliabilis, an endemic species from the Yucatán Peninsula, was classified in 1994 as a threatened species under the NOM-059-ECOL-1994 due to its fragile environment and its increasing extraction for commerce. Although ex situ reproduction efforts have been carried out in the past years, habitat destruction has advanced. This study aimed to apply the official methodology (MER, Método de evaluación de riesgo de especies silvestres en México) in order to update the status of the species. Population structure, size and morphological variability were assessed at 6 sites. using open access databases from INEGI to evaluate changes in land use and distribution contrasting current conditions with those present under the previous assessment. Additioonal data were obtained from herbaria and published accounts. The total value of MER obtained was 2.312, which being above 2, leaves the species as &#8220;endangered&#8221;. The main cause of the reclassification is habitat loss and fragmentation, but also because it is dioecious without clonal reproduction, a condition that hinders its reproduction in the wild.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Norma Oficial Mexicana]]></kwd>
<kwd lng="es"><![CDATA[Conservación]]></kwd>
<kwd lng="es"><![CDATA[Selva baja caducifolia]]></kwd>
<kwd lng="es"><![CDATA[Cambio de uso de suelo]]></kwd>
<kwd lng="es"><![CDATA[Deforestación]]></kwd>
<kwd lng="es"><![CDATA[Degradación ambiental]]></kwd>
<kwd lng="es"><![CDATA[Peligro de extinción]]></kwd>
<kwd lng="en"><![CDATA[Mexican Official Norm]]></kwd>
<kwd lng="en"><![CDATA[Conservation]]></kwd>
<kwd lng="en"><![CDATA[Seasonally dry forest]]></kwd>
<kwd lng="en"><![CDATA[Land use change]]></kwd>
<kwd lng="en"><![CDATA[Deforestation]]></kwd>
<kwd lng="en"><![CDATA[Habitat degradation]]></kwd>
<kwd lng="en"><![CDATA[Brink of extinction]]></kwd>
</kwd-group>
</article-meta>
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