<?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>S2007-11322018000300209</article-id>
<article-id pub-id-type="doi">10.29298/rmcf.v9i47.160</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Variables ambientales que afectan la densidad de diez especies forestales en la Sierra Norte de Oaxaca]]></article-title>
<article-title xml:lang="en"><![CDATA[Environmental variables affecting the density of ten forest species in the Northern Sierra of Oaxaca]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bautista-Santiago]]></surname>
<given-names><![CDATA[Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Antúnez]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santiago-García]]></surname>
<given-names><![CDATA[Wenceslao]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valenzuela-Encinas]]></surname>
<given-names><![CDATA[César]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de la Sierra de Juárez Maestría en Ciencias en Conservación de los Recursos Forestales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de la Sierra de Juárez Instituto de Estudios Ambientales División de estudios de Posgrado]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<volume>9</volume>
<numero>47</numero>
<fpage>209</fpage>
<lpage>229</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322018000300209&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322018000300209&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322018000300209&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Caracterizar las condiciones ambientales en las que se desarrollan las especies forestales es importante, porque permite conocer parte de su hábitat; información útil para tomar decisiones encaminadas a un aprovechamiento integral de los bosques, que incluya medidas preventivas que contrarresten su degradación o su extinción. El objetivo de este estudio fue identificar las variables ambientales que afectan significativamente la abundancia de 10 especies arbóreas que crecen en los bosques templados de Santiago Comaltepec, al norte de Oaxaca, México. Para ello, se utilizaron tres métodos de análisis: 1) componentes principales, 2) coeficientes de correlación no paramétrica, y 3) modelos lineales generalizados. Se evaluaron un total de 23 variables medioambientales, principalmente, registros de temperaturas mínimas y máximas; precipitaciones en el verano, en invierno y en primavera; así como atributos fisiográficos que incluyeron la pendiente, la exposición y la altitud. Todas mostraron una correlación significativa (p&lt;0.001) con al menos tres especies, varias con coeficientes de correlación superior a 0.90. Se identificaron tres taxa que son más sensibles a las variables de temperatura, en particular, a la temperatura mínima, la superior a 5 °C, y al índice de aridez; otras tres que parecen tener mayor sensibilidad a la cantidad de lluvia registrada en la primavera, en el verano, en el invierno y en las precipitaciones de abril a septiembre.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The characterization of the environmental conditions of forest species is important because it allows knowing part of their habitat; this information is useful for making decisions for an integral use of forests, including preventive measures that counteract habitat degradation or the risk of extinction of the plants. The main objective of this study was to identify the environmental variables that significantly affect the abundance of ten tree species growing in the temperate forests of Santiago Comaltepec, north of Oaxaca. Three analysis methods were used for this purpose: 1) principal component analysis, 2) non-parametric correlation coefficients, and 3) generalized linear models. A total of 23 climatic and physiographic variables were used: mainly records of average, minimum and maximum temperatures; rainfall during the summer, spring and winter, and rainfall during of the highest plant activity, as well as other attributes of each sampling plot including the slope, exposure and altitude. All the variables studied showed a significant correlation (p&lt;0.001) with at least three species, several of them with correlation coefficients greater than 0.90. Of the ten species studied, three showed high sensitivity to temperature variables, mainly the minimum temperature, temperatures above 5 °C, and the aridity index; and three species showed high evidence of sensitivity to the precipitations registered in spring, in summer and in winter, and to the April-September precipitations.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Abundancia]]></kwd>
<kwd lng="es"><![CDATA[análisis multivariado]]></kwd>
<kwd lng="es"><![CDATA[bosque templado]]></kwd>
<kwd lng="es"><![CDATA[correlación no paramétrica]]></kwd>
<kwd lng="es"><![CDATA[modelos lineales generalizados]]></kwd>
<kwd lng="es"><![CDATA[nicho climático]]></kwd>
<kwd lng="en"><![CDATA[Abundance]]></kwd>
<kwd lng="en"><![CDATA[multivariate analysis]]></kwd>
<kwd lng="en"><![CDATA[temperate forest]]></kwd>
<kwd lng="en"><![CDATA[non-parametric correlation]]></kwd>
<kwd lng="en"><![CDATA[generalized additive models]]></kwd>
<kwd lng="en"><![CDATA[climatic niche]]></kwd>
</kwd-group>
</article-meta>
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