<?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>1405-0471</journal-id>
<journal-title><![CDATA[Madera y bosques]]></journal-title>
<abbrev-journal-title><![CDATA[Madera bosques]]></abbrev-journal-title>
<issn>1405-0471</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-04712017000100121</article-id>
<article-id pub-id-type="doi">10.21829/myb.2017.2311125</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis estructural de dos áreas del matorral espinoso tamaulipeco del noreste de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Structural analysis of two Tamaulipan thornscrub areas in northeastern Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pequeño-Ledezma]]></surname>
<given-names><![CDATA[Miguel Angel]]></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[Jiménez-Pérez]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre-Calderón]]></surname>
<given-names><![CDATA[Oscar Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Tagle]]></surname>
<given-names><![CDATA[Marco Aurelio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Molina-Guerra]]></surname>
<given-names><![CDATA[Víctor Manuel]]></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[Linares Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,RENAC, S.A. de C.V.  ]]></institution>
<addr-line><![CDATA[Linares Nuevo León]]></addr-line>
<country>México</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>
<volume>23</volume>
<numero>1</numero>
<fpage>121</fpage>
<lpage>132</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-04712017000100121&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-04712017000100121&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-04712017000100121&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se evaluó la composición, estructura y diversidad vegetal de dos áreas del matorral espinoso tamaulipeco (loma y valle) para conocer sus principales diferencias o similitudes. El matorral de porte bajo se ubica en lomeríos, donde el suelo es somero, mayormente pedregoso y la disponibilidad de agua en la zona se limita a las temporadas de lluvia de la región, mientras que el matorral de porte alto se localiza en una zona de caudal intermitente el cual aparece en temporadas de lluvias y forma un cuerpo de agua temporal y los suelos son profundos. En cada área se establecieron 3 sitios de muestreo de 40 m × 40 m para evaluar la vegetación arbórea y arbustiva. Se estimó el índice de valor de importancia y la diversidad (alfa y beta) así como el índice de similitud de Sorensen Cuantitativo. En total se registraron 17 especies pertenecientes a 11 familias y 15 géneros. La familia con mayor presencia en el estudio fue Fabaceae con 7 especies. El área de matorral con porte alto presentó 14 especies, mientras el área de matorral en porte bajo presentó solamente 7 especies. Las comunidades evaluadas presentan una similitud baja (19%). Mediante la presente investigación se concluye que los dos tipos de matorrales presentes en la zona de estudio registran diferencias significativas entre sí en densidad, área de copa, riqueza y diversidad. Asimismo se concluye que comparten cuatro especies del total de 17 presentes en ambas zonas de estudio.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The composition, structure and biological diversity in two areas in the Tamaulipan thornscrub of Northeast Mexico were evaluated (hill and plain) to asses the main differences or similarities. The lower height thornscrub is located on hillocks, where the soil is shallow, stony and the availability of water in the area is limited to the rainy season in the region, while the greater height thornscrub is located in an area of deep soil and has an intermittent water flow which appears in rainy seasons and forms a temporary body of water. To evaluate tree and shrub vegetation, three sampling plots of 40 m x 40 m where delimited in each area for the purpose of calculating the importance value index, diversity (alpha and beta) and the Soresen similarity index. A total of 17 species, 11 families and 15 genera were registered. The most abundant family was Fabaceae with 7 spp. The greater high thornscrub area showed 14 species, while the lower height thornscrub showed 7 species only. The evaluated communities have low similarity (19%). Through this investigation it is concluded that the two types of thornscrub present in the study area show significant differences between them in density, canopy area, species richness and diversity. Likewise it is concluded that 4 species of all 17 present are shared in both study areas.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[abundancia]]></kwd>
<kwd lng="es"><![CDATA[dominancia]]></kwd>
<kwd lng="es"><![CDATA[frecuencia]]></kwd>
<kwd lng="es"><![CDATA[IVI]]></kwd>
<kwd lng="es"><![CDATA[loma]]></kwd>
<kwd lng="es"><![CDATA[Sorensen]]></kwd>
<kwd lng="es"><![CDATA[valle]]></kwd>
<kwd lng="en"><![CDATA[abundance]]></kwd>
<kwd lng="en"><![CDATA[dominance]]></kwd>
<kwd lng="en"><![CDATA[frequency]]></kwd>
<kwd lng="en"><![CDATA[IVI]]></kwd>
<kwd lng="en"><![CDATA[hill]]></kwd>
<kwd lng="en"><![CDATA[Sorensen]]></kwd>
<kwd lng="en"><![CDATA[plain]]></kwd>
</kwd-group>
</article-meta>
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