<?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>S1405-04712018000200217</article-id>
<article-id pub-id-type="doi">10.21829/myb.2018.2421617</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Reproducción sexual de Quercus macdougallii, un encino endémico de la Sierra Juárez, Oaxaca]]></article-title>
<article-title xml:lang="en"><![CDATA[Sexual reproducion of Quercus macdougallii, an endemic oak of Sierra Juárez, Oaxaca]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Clark-Tapia]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendoza Ochoa]]></surname>
<given-names><![CDATA[Ana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre-Hidalgo]]></surname>
<given-names><![CDATA[Víctor]]></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[Campos Contreras]]></surname>
<given-names><![CDATA[Jorge Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valencia-A.]]></surname>
<given-names><![CDATA[Susana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Luna-Krauletz]]></surname>
<given-names><![CDATA[María Delfina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alfonso-Corrado]]></surname>
<given-names><![CDATA[Cecilia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de la Sierra Juárez Instituto de Estudios Ambientales ]]></institution>
<addr-line><![CDATA[Oaxaca Oax]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ecología ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México FES-Iztacala Unidad de Bioctenología y Prototipos]]></institution>
<addr-line><![CDATA[Tlalnepantla Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<volume>24</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-04712018000200217&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-04712018000200217&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-04712018000200217&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Quercus macdougallii Martínez es una especie endémica y amenazada de la Sierra Juárez, Oaxaca, México, que requiere de aplicar estrategias de preservación in situ de sus poblaciones para promover su permanencia a largo plazo. Para lograrlo, es necesario conocer los mecanismos de reproducción sexual de esta especie. Este trabajo, analiza factores que afectan el establecimiento y el crecimiento de plántulas de Q. macdougallii, con la finalidad de dar recomendaciones para su preservación in situ. El estudio se realizó de 2009 a 2010 y consistió en cuantificar la producción de bellotas, estimar porcentajes de depredación y parasitismo, estimar germinación de bellotas y evaluar el crecimiento y la supervivencia de plántulas. Los primeros dos objetivos se realizaron en condiciones de campo y laboratorio, mientras que el tercer objetivo solo fue analizado en condiciones de laboratorio. Paralelamente, se realizó un experimento para estimar el éxito de un plan de reforestación realizado tanto en condiciones de disturbio, como en condiciones sin distubio. Los resultados obtenidos sugieren que la especie estudiada presenta una producción promedio de 1735 ± 832 bellotas, una baja depredación por consumo (&lt; 7%) y un parasitismo de 8.7%. La germinación y el crecimiento en campo y en laboratorio fueron mayores en bellotas grandes (&gt; 1.701 g) que en medianas (1.045 g - 1.70 g) y pequeñas (0.350 g - 1.044 g), con un porcentaje de germinación promedio de 50%. La supervivencia de plántulas fue de 10% en sitios con disturbio y de 75% en condiciones sin disturbios. Se sugiere recolectar bellotas grandes para realizar programas de reforestación; para ello, es recomendable poner a germinar las bellotas en el laboratorio, dejarlas crecer durante seis meses y trasplantarlas al inicio de la época de lluvia y bajo el dosel de árboles madre.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Quercus macdougallii Martínez is an endemic and threatened species of the Sierra Juárez, Oaxaca. Effective conservation and restoration programs that ensure long-term in situ populations are needed in the region. Therefore, an important aspect to consider is adequate knowledge of how to reproduce this species, specifically, knowledge of the ecology of seeds and seedlings. The objective of this study was to evaluate the sexual reproduction (acorn) of this species, in order to generate recommendations for its conservation. Seed production from 2009 to 2010 was recorded as well as seed depredation, seed parasitism, germination percentage and survival of seedling coming from seeds of three different sizes-classes. The objetives one and two were evaluated in the laboratory and in the field, while the objetive three was analysed in the laboratory. Results showed that the species had an average yield per tree of 1735 ± 832 seeds, low depretation (&lt; 7%) and low parasitation rates (8.7%). Seed germination and seedling growth in the field and in the laboratory were higher in large (&gt; 1.701 g) than in medium (1.045 g - 1.70 g) and smaller seeds (0.350 g - 1.044 g), with a mean germination percentage of 50 %. Seedling survival was 10% in the disturbed site and 75% in the undisturbed site. It is recommended to collect large seeds for reforestation programs. To do this, it is advisable to germinate acorns in the laboratory, let them grow for six months and transplant them at the beginning of the rainy season under the canopy trees]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[bellota]]></kwd>
<kwd lng="es"><![CDATA[crecimiento]]></kwd>
<kwd lng="es"><![CDATA[germinación]]></kwd>
<kwd lng="es"><![CDATA[plántulas]]></kwd>
<kwd lng="es"><![CDATA[reforestación]]></kwd>
<kwd lng="es"><![CDATA[supervivencia]]></kwd>
<kwd lng="en"><![CDATA[seedling]]></kwd>
<kwd lng="en"><![CDATA[growth]]></kwd>
<kwd lng="en"><![CDATA[germination]]></kwd>
<kwd lng="en"><![CDATA[acorn]]></kwd>
<kwd lng="en"><![CDATA[reforestation]]></kwd>
<kwd lng="en"><![CDATA[survival]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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