<?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>2007-1132</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias forestales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. de cienc. forestales]]></abbrev-journal-title>
<issn>2007-1132</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-11322024000100033</article-id>
<article-id pub-id-type="doi">10.29298/rmcf.v15i81.1426</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Distribución espacial de Pinus y Quercus en un gradiente altitudinal de bosque templado en Guadalupe y Calvo, Chihuahua]]></article-title>
<article-title xml:lang="en"><![CDATA[Spatial distribution of Pinus and Quercus in an altitudinal gradient of temperate forest in Guadalupe y Calvo, state of Chihuahua]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-García]]></surname>
<given-names><![CDATA[Samuel Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alanís Rodríguez]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rubio-Camacho]]></surname>
<given-names><![CDATA[Ernesto Alonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre-Calderón]]></surname>
<given-names><![CDATA[Óscar Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yerena-Yamallel]]></surname>
<given-names><![CDATA[José Israel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuéllar Rodríguez]]></surname>
<given-names><![CDATA[Luis Gerardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Collantes Chávez-Costa]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ciencias Forestales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Campo Experimental Centro-Altos de Jalisco ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma del Estado de Quintana Roo Campus Cozumel ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2024</year>
</pub-date>
<volume>15</volume>
<numero>81</numero>
<fpage>33</fpage>
<lpage>58</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322024000100033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322024000100033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322024000100033&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo del estudio fue determinar los patrones de distribución espacial de las especies de Pinus y Quercus a lo largo de un gradiente altitudinal en un bosque templado del noroeste de México. Se analizó la uniformidad de los individuos (W  i ), la mezcla de especies (M  i ) y la dominancia dimensional (U  i ) mediante parámetros estructurales basados en las relaciones con los cuatro vecinos más cercanos. Los datos se obtuvieron de 37 sitios de muestreo en tres niveles altitudinales (Nivel 1: 2 200-2 600 m, Nivel 2: 2 600-2 800 m y Nivel 3: 2 800-3 200 m), lo que generó un total de 979 grupos estructurales para todas las especies. Pinus contribuyó con 191, 51 y 41 grupos en los niveles 1, 2 y 3; mientras que Quercus aportó 192, uno y cero, respectivamente. Pinus evidenció tendencia hacia la aleatoriedad, y los encinos también en el Nivel 1, aunque en este análisis se observó que a mayor altitud Pinus tiende hacia una distribución regular. La mezcla de especies fue de media a alta para Pinus, lo cual indica que sus individuos están rodeados de árboles de especies diferentes, y con Quercus ocurrió al contrario. La dominancia dimensional reveló que los ejemplares de Pinus tienen mayor altura que los del género Quercus en todo el gradiente, especialmente en el Nivel 1. Este enfoque proporciona una comprensión exacta de la función que cumplen las especies en la dinámica de los ecosistemas forestales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective of the study was to determine the spatial distribution patterns of Pinus and Quercus species along an altitudinal gradient in a temperate forest in northwestern Mexico. Individual uniformity (W  i ), species mixture (M  i ), and size dominance (U  i ) were analyzed using structural parameters based on the relationships with the four nearest neighbors. Data were obtained from 37 sampling sites at three different altitude levels (Level 1: 2 200-2 600 m, Level 2: 2 600-2 800 m, and Level 3: 2 800-3 200 m), generating a total of 979 structural groups for all species. Pinus contributed 191, 51, and 41 groups at levels 1, 2, and 3, while Quercus contributed 192, one and zero, respectively. Pinus showed a tendency towards randomness, as did the oaks at Level 1; although, in this analysis, it was observed that at higher altitudes, Pinus tends towards a regular distribution. The species mix was medium to high for Pinus, which indicates that its individuals are surrounded by trees of different species, unlike Quercus. Size dominance revealed that Pinus specimens are taller than those of the Quercus genus throughout the gradient, especially at Level I. This approach provides an accurate understanding of the role of species in forest ecosystem dynamics.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Altitud]]></kwd>
<kwd lng="es"><![CDATA[conservación]]></kwd>
<kwd lng="es"><![CDATA[dominancia dimensional]]></kwd>
<kwd lng="es"><![CDATA[estructura arbórea]]></kwd>
<kwd lng="es"><![CDATA[índices de vecindad]]></kwd>
<kwd lng="es"><![CDATA[mezcla de especies]]></kwd>
<kwd lng="en"><![CDATA[Altitude]]></kwd>
<kwd lng="en"><![CDATA[conservation]]></kwd>
<kwd lng="en"><![CDATA[size dominance]]></kwd>
<kwd lng="en"><![CDATA[tree structure]]></kwd>
<kwd lng="en"><![CDATA[neighborhood indexes]]></kwd>
<kwd lng="en"><![CDATA[species mix]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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