<?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>0123-4226</journal-id>
<journal-title><![CDATA[Revista U.D.C.A Actualidad & Divulgación Científica]]></journal-title>
<abbrev-journal-title><![CDATA[rev.udcaactual.divulg.cient.]]></abbrev-journal-title>
<issn>0123-4226</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Aplicadas y Ambientales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0123-42262019000100319</article-id>
<article-id pub-id-type="doi">10.31910/rudca.v22.n1.2019.1144</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Biomasa microbiana y respiración basal del suelo bajo sistemas agroforestales con cultivos de café]]></article-title>
<article-title xml:lang="en"><![CDATA[Microbial biomass and basal soil respiration under agroforestry systems with coffee crops]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pardo-Plaza]]></surname>
<given-names><![CDATA[Yuri J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Paolini Gómez]]></surname>
<given-names><![CDATA[Jorge E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cantero-Guevara]]></surname>
<given-names><![CDATA[Miriam Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Córdoba Departamento de Química ]]></institution>
<addr-line><![CDATA[Montería ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Venezolano de Investigaciones Científicas Centro de Ecología ]]></institution>
<addr-line><![CDATA[Caracas ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Córdoba  ]]></institution>
<addr-line><![CDATA[Montería ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>22</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0123-42262019000100319&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0123-42262019000100319&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0123-42262019000100319&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La actividad microbiológica es esencial para mantener la calidad de los suelos y los sistemas agroforestales surgen como alternativa, para el manejo agroecológico y sostenible del suelo. Este estudio evaluó el efecto de las variedades de café (Caturra y Catuaí) y de las fluctuaciones por épocas climáticas, sobre algunas propiedades microbiológicas del suelo, como indicadores de calidad, en un sistema agroforestal. Las muestras de suelo, se tomaron en la capa superior, a 5cm de profundidad, durante un año en épocas seca y lluviosa. Las mayores emisiones de CO2, se observaron en los suelos con la variedad Catuaí, en época seca. Los niveles de carbono de la biomasa microbiana (Cmic) no mostraron diferencias entre las variables estudiadas. Los valores obtenidos para el cociente metabólico (qCO2) fueron mayores en los suelos con la variedad Catuaí, mientras que el cociente microbiano (qMic) presentó los mayores valores en los suelos con la variedad Caturra. El cociente de eficiencia metabólica (qCO2.Corg -1) no mostró diferencias entre los suelos estudiados; sin embargo, sus niveles fueron más altos para las muestras tomadas durante la época seca. La microbiota del suelo denotó sensibilidad a los cambios por época climática de muestreo y tipo de variedad cultivada, mientras que las constantes ecofisiológicas resultaron sensiblemente apropiadas, para evaluar la calidad del suelo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The microbiological activity is essential to maintain soil quality, and agroforestry systems emerge as an alternative to the agro-ecological and sustainable land management. This work evaluated the effect of the Caturra and Catuaí coffee varieties, and the weather fluctuation on some microbiological properties of the soil, as indicators of quality in an agroforestry system. The soil samples were taken from the top layer with a depth of 5cm, during a year in dry and rainy seasons. The highest CO2 emissions were observed in soils with the Catuaí variety, in the dry season. On the other hand, Carbon levels of the microbial biomass (Cmic) did not show differences between the variables studied. The values obtained for the metabolic quotient (qCO2) were higher in soils with the Catuaí variety; while the microbial quotient (qMic) presented the highest values in soils with the Caturra variety. The metabolic efficiency ratio (qCO2.Corg-1) showed no differences between the studied soils, however, their levels were higher for the samples taken during the dry season. Soil microbiota showed sensitivity to changes by climatic period and by the type of variety, while the constant eco-physiological were substantially appropriate to evaluate soil quality and sensitive to changes by climatic period and variety of coffee grown in these agroecosystems.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[actividad microbiológica]]></kwd>
<kwd lng="es"><![CDATA[suelo]]></kwd>
<kwd lng="es"><![CDATA[café]]></kwd>
<kwd lng="es"><![CDATA[agroecosistemas]]></kwd>
<kwd lng="es"><![CDATA[constantes ecofisiológicas]]></kwd>
<kwd lng="en"><![CDATA[microbiological activity]]></kwd>
<kwd lng="en"><![CDATA[soil]]></kwd>
<kwd lng="en"><![CDATA[coffee]]></kwd>
<kwd lng="en"><![CDATA[agroecosystem]]></kwd>
<kwd lng="en"><![CDATA[ecophysiological constants]]></kwd>
</kwd-group>
</article-meta>
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