<?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>1405-2768</journal-id>
<journal-title><![CDATA[Polibotánica]]></journal-title>
<abbrev-journal-title><![CDATA[Polibotánica]]></abbrev-journal-title>
<issn>1405-2768</issn>
<publisher>
<publisher-name><![CDATA[Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-27682017000200039</article-id>
<article-id pub-id-type="doi">10.18387/polibotanica.44.3</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[El conocimiento florístico de la Península de Yucatán, México]]></article-title>
<article-title xml:lang="en"><![CDATA[The floristic knowledge of the Yucatan Peninsula, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Sarabia]]></surname>
<given-names><![CDATA[J.E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Duno de Stefano]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carnevali Fernández-Concha]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez Morillo]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Méndez-Jiménez]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zamora-Crescencio]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez-Báez]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cetzal-Ix]]></surname>
<given-names><![CDATA[W.]]></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>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Campeche Herbario UCAM Centro de Investigaciones Históricas y Sociales]]></institution>
<addr-line><![CDATA[San Francisco de Campeche Campeche]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Tecnológico de Chiná  ]]></institution>
<addr-line><![CDATA[ Campeche]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<numero>44</numero>
<fpage>39</fpage>
<lpage>49</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-27682017000200039&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-27682017000200039&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-27682017000200039&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN: La Península de Yucatán está conformada de los estados mexicanos de Campeche, Quintana Roo y Yucatán; un área más natural incluye también las regiones septentrionales de Belice y Guatemala y se conoce como Provincia Biótica Península de Yucatán. La Península de Yucatán posee una geología cárstica, una hidrografía superficial escasa, elevaciones menores de 350 metros y un gradiente de precipitación que permite la formación de diferentes asociaciones vegetales, siendo las selvas caducifolias, subcaducifolias y perennifolias las más predominantes. La información florística de esta región se actualiza constantemente y en el presente trabajo, se demuestra dicha proceso a través de una actualización de la flora vascular endémica y de la recopilación de nuevos registros partiendo del último listado florístico de la Península de Yucatán mexicana (Carnevali et al., 2010). Asimismo se ha propuesto la aplicación de un índice de densidad de colección botánica (IDCB, número de colecciones botánicas/área km2), como herramienta para evaluar el estado de conocimiento florístico por país, estado u otra unidad política administrativa. Por ejemplo, una estimación previa para el estado de Yucatán arrojó un índice de 159 muestras/km2. Se calculó este parámetro para toda la región y para los tres estados. En general el conocimiento florístico de la región sigue en marcha con la descripción de nuevas especies para la ciencia cuyo material botánico es originario de la región y la adición de nuevos registros florísticos. El estado mejor conocido es Yucatán, seguido de Quintana Roo y Campeche. Estos dos últimos estados requieren más colecciones botánicas, en especial fuera del área de influencia de carreteras y centros poblados.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT: The Yucatan Peninsula as biogeographic province consists of the Mexican states of Campeche, Quintana Roo, and Yucatan, a more natural area also includes the northern regions of Belize, and Guatemala, and it is known as the Yucatan Peninsula Biotic Province. This province has karst geology, low surface hydrography, elevations below 350 meters, and a gradient of precipitation that allows the formation of different plant associations and the deciduous forest, semideciduous forest, and the evergreen forest are the most commons ones. The floristic information of this region is constantly updated. In the present work, this process is exemplified through an update for the endemic vascular flora and the recognition of new records from the last floristic checklist of the Mexican Yucatan Peninsula (Carnevali et al., 2010). Likewise, the application of a density index of botanical collection (IDCB, number of botanical collections /area) has been proposed, as a tool to evaluate the state of floristic knowledge by country, state or other administrative political unit. For example, a previous estimation for the Yucatan state yielded an index of 159 samples/km2. This parameter was calculated for the entire region and the three states. In general, the floristic knowledge of the region is still in progress (new species, and new records), the state best collected is Yucatan, followed by Quintana Roo and Campeche. These last two states require more botanical collections, especially outside the area of influence of roads and populated centers.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[actualización del conocimiento florístico]]></kwd>
<kwd lng="es"><![CDATA[colecciones de herbario]]></kwd>
<kwd lng="es"><![CDATA[Península de Yucatán]]></kwd>
<kwd lng="es"><![CDATA[índice de colección botánica]]></kwd>
<kwd lng="en"><![CDATA[Updating the floristic knowledge]]></kwd>
<kwd lng="en"><![CDATA[herbarium collections]]></kwd>
<kwd lng="en"><![CDATA[Yucatan Peninsula]]></kwd>
<kwd lng="en"><![CDATA[index botanical collection]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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