<?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>0123-3033</journal-id>
<journal-title><![CDATA[Ingeniería y competitividad]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. compet.]]></abbrev-journal-title>
<issn>0123-3033</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ingeniería, Universidad del Valle]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0123-30332023000300002</article-id>
<article-id pub-id-type="doi">10.25100/iyc.v25i3.12482</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[The dynamic of shade trees in cocoa agrosystems]]></article-title>
<article-title xml:lang="es"><![CDATA[La dinámica de los árboles de sombra en los agrosistemas de cacao]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Díaz]]></surname>
<given-names><![CDATA[Baltazar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solís-Silvan]]></surname>
<given-names><![CDATA[Rudy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fraire-Vázquez]]></surname>
<given-names><![CDATA[Azucena del Rosario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Moreno]]></surname>
<given-names><![CDATA[Amalia Xiutlhalzin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ríos-Rodas]]></surname>
<given-names><![CDATA[Liliana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gerónimo-Torres]]></surname>
<given-names><![CDATA[José del Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Tecnológico Nacional de México  ]]></institution>
<addr-line><![CDATA[Comalcalco Tabasco]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Chiapas Facultad Maya de Estudios Agropecuarios ]]></institution>
<addr-line><![CDATA[Catazajá Chiapas]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>25</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0123-30332023000300002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0123-30332023000300002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0123-30332023000300002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The presence of diverse shade trees in cocoa agrosystems allows for the creation of suitable habitats for wildlife species, enabling them to thrive within the plantation environment. The objective of this research is to calculate the similarity indices of shade trees used in cocoa agrosystems in the region of Comalcalco, Tabasco, Mexico. Field sampling was carried out to collect data on breast height diameter, canopy diameter and canopy height, these variables were used to calculate the Sorensen and Morisita-Horn similarity indices. The similarity between the study sites, Sorensen&amp;apos;s qualitative index shows that SA 1 - SA 2 are the most similar in species composition, SA 1 - SA 2 with 27.46% similarity, followed by SA 2 - SA 3 with 27.27 %, while SA 1 - SA 3 are the sites with a less similar structure of 26.52%. The role of shade trees in cocoa agrosystems is significant as it can serve as a variable in assessing and predicting the quality of available habitats for wildlife conservation, including birds, reptiles, and arboreal mammals, using ecological niche modeling techniques.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La presencia de diversos árboles de sombra en los agrosistemas de cacao permite la creación de hábitats adecuados para las especies de vida silvestre, lo que les permite prosperar en el entorno de la plantación. El objetivo de esta investigación es calcular los índices de similitud de árboles de sombra utilizados en agrosistemas cacaoteros en la región de Comalcalco, Tabasco, México. Se realizó un muestreo de campo para recolectar datos sobre el diámetro de la altura del pecho, el diámetro del dosel y la altura del dosel, estas variables se utilizaron para calcular los índices de similitud de Sorensen y Morisita-Horn. La similitud entre los sitios de estudio, el índice cualitativo de Sorensen muestra que SA 1 - SA 2 son los más similares en composición de especies, SA 1 - SA 2 con 27.46 % de similitud, seguido de SA 2 - SA 3 con 27.27 %, mientras que SA 1 - SA 3 son los sitios con una estructura menos similar del 26,52%. El papel de los árboles de sombra en los agrosistemas de cacao es importante, ya que puede servir como variable para evaluar y predecir la calidad de los hábitats disponibles para la conservación de la vida silvestre, incluidas aves, reptiles y mamíferos arbóreos, utilizando técnicas de modelado de nichos ecológicos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[biodiversity indices]]></kwd>
<kwd lng="en"><![CDATA[dasometric variables]]></kwd>
<kwd lng="en"><![CDATA[shade trees]]></kwd>
<kwd lng="es"><![CDATA[índices de biodiversidad]]></kwd>
<kwd lng="es"><![CDATA[variables dasométricas]]></kwd>
<kwd lng="es"><![CDATA[árboles de sombra]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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