<?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>2215-2563</journal-id>
<journal-title><![CDATA[Revista Geográfica de América Central]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Geog. Amer. Central]]></abbrev-journal-title>
<issn>2215-2563</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2215-25632021000100340</article-id>
<article-id pub-id-type="doi">10.15359/rgac.66-1.13</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cuantificación del carbono orgánico y materia orgánica en suelos no rizosféricos o cubiertos por Avicennia germinans (L.) y Conocarpus erectus (L.) emplazados en Boca de Uchire, laguna de Unare, Estado de Anzoátegui, Venezuela]]></article-title>
<article-title xml:lang="en"><![CDATA[Quantification of organic carbon and organic matter in nonrhizospheric soils and covered by Avicennia germinans (L.) and Conocarpus erectus (L.) located in Boca de Uchire, Unare lagoon, State of Anzoátegui, Venezuela]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Núñez-Ravelo]]></surname>
<given-names><![CDATA[Franklin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ugas-Pérez]]></surname>
<given-names><![CDATA[María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calderón-Castellanos]]></surname>
<given-names><![CDATA[Rossany]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivas-Meriño]]></surname>
<given-names><![CDATA[Ferney]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Pedagógica Experimental Libertador-IPC.  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Pedagógica Experimental Libertador-IPC  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Pedagógica Experimental Libertador-IPC.  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Pedagógica Experimental Libertador-IPC.  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Venezuela</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<numero>66</numero>
<fpage>340</fpage>
<lpage>366</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S2215-25632021000100340&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S2215-25632021000100340&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S2215-25632021000100340&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El propósito fue evidenciar la diferencia significativa en el contenido de carbono orgánico (C) y materia orgánica (MO) en tres grupos de suelos: no rizosférico (nr), con presencia de Avicennia germinans (Ag) y Conocarpus erectus (Ce). Para este fin, se colectaron 54 muestras de suelo superficial (0-20 cm) en el sector Boca de Uchire, distribuidas en: 18 de nr, 18 de Ag y 18 de Ce. Se determinó el contenido de C a partir de la oxidación por dicromato de potasio, así como el % MO mediante el factor convencional de Bemmelen. Los datos obtenidos se trataron mediante análisis descriptivo, ANOVA y prueba de Tukey. Los resultados evidencian diferencias en los tres grupos de muestras para las variables en estudio, el C presentó valores promedios de nr =0,04%; Ag=0,08% y Ce =0,13%, mientras que la MO se estimó en promedios de nr =0,07%; Ag=0,15% y Ce =0,23%. Se reconoce que entre los grupos estudiados, el Ce presentan la mayor potencialidad forestal al aportar 2,73 Mg C ha-1 al suelo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The purpose of the present study was to evidence the significant difference in the content of soil organic carbon (SOC) and soil organic matter (SOM) in three groups, namely: non-rhizospheric (nr), Avicennia germinans-covered (Ag) and Conocarpus erectus-covered (Ce). For this purpose, 54 surface soil samples (0-20 cm depth) were collected in the Boca de Uchire sector according to the following distribution: 18 nr, 18 Ag and 18 Ce. SOC content was determined by potassium dichromate wet-oxidation and percentage SOM calculated using the conventional van Bemmelen conversion factor (=1.724). Obtained data was treated by descriptive statistics analysis of ANOVA and Tukey&#8217;s test. The results show statistically significant differences among the three sample groups for the variables under study. SOC presented average values of nr = 0.04%, Ag = 0.08% and Ce = 0.13%; average SOM was estimated as nr = 0.07%; Ag = 0.15% and Ce = 0.23%. Ce is recognized as presenting the greatest forest potentiality by stocking capacity 2.73 Mg C ha-1 to the soil.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[almacenamiento de carbono]]></kwd>
<kwd lng="es"><![CDATA[captura de carbono]]></kwd>
<kwd lng="es"><![CDATA[manglares]]></kwd>
<kwd lng="es"><![CDATA[potencialidad forestal.]]></kwd>
<kwd lng="en"><![CDATA[Carbon storage]]></kwd>
<kwd lng="en"><![CDATA[Carbon sequestration]]></kwd>
<kwd lng="en"><![CDATA[Mangroves]]></kwd>
<kwd lng="en"><![CDATA[Forest potential.]]></kwd>
</kwd-group>
</article-meta>
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