<?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>2007-7858</journal-id>
<journal-title><![CDATA[CienciaUAT]]></journal-title>
<abbrev-journal-title><![CDATA[CienciaUAT]]></abbrev-journal-title>
<issn>2007-7858</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma de Tamaulipas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-78582015000100006</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Dinámica temporal de la infestación por muérdago enano ( Arceuthobium globosum y A. vaginatum ) en Zoquiapan (Parque Nacional Iztaccíhuatl Popocatépetl), México]]></article-title>
<article-title xml:lang="en"><![CDATA[Temporal dynamics of dwarf mistletoe infestation ( Arceuthobium globosum and A vaginatum ) in Zoquiapan (Iztaccíhuatl Popocatépetl National Park), Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Queijeiro-Bolaños]]></surname>
<given-names><![CDATA[Mónica Elisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cano-Santana]]></surname>
<given-names><![CDATA[Zenón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional Autónoma de México. Facultad de Ciencias Departamento de Ecología y Recursos Naturales Laboratorio de Interacciones y Procesos Ecológicos]]></institution>
<addr-line><![CDATA[ D.F.]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2015</year>
</pub-date>
<volume>9</volume>
<numero>2</numero>
<fpage>6</fpage>
<lpage>14</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-78582015000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-78582015000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-78582015000100006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Los muérdagos enanos se encuentran entre los parásitos forestales que tienen mayor impacto biológico y económico en los bosques templados; sin embargo, se sabe poco acerca de la dinámica temporal de la infestación. El objetivo de este trabajo fue conocer cómo cambia en el tiempo la incidencia de Arceuthobium vaginatum y A. globosum sobre Pinus hartwegii en la región de Zoquiapan, dentro del Parque Nacional Iztaccíhuatl Popocatépetl, México. Durante dos años y medio (noviembre 2008 a mayo 2011) se registró la incidencia de muérdago (proporción de árboles infestados), la abundancia de hospederos y la abundancia de pinos menores a 2 m en 24 parcelas de 3 300 m2. Se encontró que la infestación es altamente variable entre fechas, especies y sitios, sin embargo, A. vaginatum mostró una mayor incidencia que A. globosum (Z = 44.09, P &lt; 0.0001). Asimismo, la ocurrencia de incendios y la tala parecen haber afectado la incidencia de los muérdagos, e incluso, en algunos casos, se observaron rebrotes severos. La incidencia de A. vaginatum tuvo una correlación negativa con la abundancia de pinos menores a 2 m (rs = - 0.414, P &lt; 0.05), por lo que esta especie pudo estar afectando el reclutamiento de individuos juveniles, mientras A. globosum no mostró una correlación significativa. Es necesario tomar en cuenta los sucesos estocásticos (como incendios) en los planes de manejo del muérdago enano, para mejorar la conservación de los recursos forestales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Dwarf mistletoes are forest parasites of great impact on temperate forests, both at the biological and the economical level; however, little is known about the tempo ral dynamics of their infestation. The aim of this study was to investigate how the incidences of Arceuthobium vaginatum and A. globosum change through time in the Zoquiapan region, in the Iztaccíhuatl Popocatépetl National Park, Mexico. For two and a half years (november 2008 to may 2011), it was registered the incidence of dwarf mistletoe (proportion of infected trees), hosts abundance, and the abundance of pines smaller than 2 m in height on 24 plots of 3 300 m2. Results show that infes tation dynamics varies greatly, between species and plots, and that A. vaginatum showed a greater incidence than A. globosum (Z = 44.09, P &lt; 0.000 1). In addition to the above, the investigators found out that the occurrence of fires and logging apparently affected the mistletoe incidence, and even, in some cases, mistle toe regrowth was observed. The incidence of A. vaginatum had a negative correlation with small pines abundance (rs = - 0.414, P&lt;0.05), which could be indicat ing that there is a negative effect on sapling recruitment. It is necessary to incorporate the occurrence of stochastic phenomena (like fires) to dwarf mistletoe manage ment programs, to improve the conservation of forest resources.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[muérdago enano]]></kwd>
<kwd lng="es"><![CDATA[Pinus hartwegii]]></kwd>
<kwd lng="es"><![CDATA[Zoquiapan]]></kwd>
<kwd lng="es"><![CDATA[infestación]]></kwd>
<kwd lng="es"><![CDATA[incidencia]]></kwd>
<kwd lng="en"><![CDATA[dwarf mistletoe]]></kwd>
<kwd lng="en"><![CDATA[Pinus hartwegii]]></kwd>
<kwd lng="en"><![CDATA[Zoquiapan]]></kwd>
<kwd lng="en"><![CDATA[infestation]]></kwd>
<kwd lng="en"><![CDATA[incidence]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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