<?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>0034-7744</journal-id>
<journal-title><![CDATA[Revista de Biología Tropical]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. biol. trop]]></abbrev-journal-title>
<issn>0034-7744</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-77442017000300900</article-id>
<article-id pub-id-type="doi">10.15517/rbt.v65i3.29444</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Variación arquitectónica y morfológica de Hintonia latiflora (Rubiaceae) en relación a la cosecha de corteza y factores ambientales]]></article-title>
<article-title xml:lang="en"><![CDATA[Architectural and morphological variation of Hintonia latiflora (Rubiaceae) in relation to bark harvest and environmental factors]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Beltrán-Rodríguez]]></surname>
<given-names><![CDATA[Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero-Manzanares]]></surname>
<given-names><![CDATA[Angélica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Luna-Cavazos]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Moya]]></surname>
<given-names><![CDATA[Edmundo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[Texcoco Edo. de México]]></addr-line>
<country>MX</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<volume>65</volume>
<numero>3</numero>
<fpage>900</fpage>
<lpage>916</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0034-77442017000300900&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0034-77442017000300900&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0034-77442017000300900&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[ResumenHintonia latiflora es una especie ecológicamente rara y económicamente importante del bosque tropical caducifolio de la Cuenca del Balsas, México, cuya corteza se comercializa como medicinal. Las prácticas de descortezado han modificado la forma de las plantas, su arquitectura y morfometría. Se desconoce, si además, existe influencia de factores topogáficos y edáficos sobre estos atributos. Se propone que las condiciones ecológicas en las áreas de distribución y cosecha determinarán las características morfométricas y la variación de la arquitectura de los individuos. Para probar esta hipótesis, evaluamos la relación de factores topográficos y edáficos en diferentes características morfológicas de juveniles (n = 143) y adultos (n = 117) de ocho zonas de cosecha de H. latiflora. Las zonas de cosecha, con una superficie de 0.6 ha, fueron seleccionadas al azar con el apoyo de mapas participativos elaborados por los recolectores del área de estudio. Los datos fueron analizados mediante componentes principales (ACP), y correspondencia canónica (ACC). Los primeros tres CP explicaron el 92.1 % de la variación morfológica; la altura, diámetro basal y cobertura fueron las variables que explicaron las diferencias morfométricas entre juveniles y adultos en las ocho zonas de cosecha. La pendiente del terreno, orientación de la pendiente, profundidad del suelo y pedregosidad, fueron los factores ecológicos estadísticamente relacionados con las diferencias morfométricas. Una menor pendiente, poca pedregosidad, profundidad de suelo, orientación E-O en juveniles (azimut 90&#730;-270&#730;) y N-S en adultos (azimuth 0&#730;-180&#730;), fueron los factores asociados a mayor altura, número de ramas basales, diámetro basal y cobertura en H. latiflora. Las zonas con mayor intensidad de cosecha estuvieron integradas por árboles monopódicos y algunos individuos basítonos reiterados. Los adultos de estas zonas tuvieron mayor número de frutos. En estos sitios, las plantas de H. latiflora fueron más abundantes y productivas para corteza, pero la alta intensidad de cosecha influyó en la arquitectura vegetal, formando individuos arbustivos multirramificados que originalmente fueron mesótonos. Las áreas con menor intensidad de cosecha estuvieron caracterizadas por pendientes abruptas, suelos superficiales y pedregosos, dominadas por árboles basítonos de menor talla, delgados y escasos en el área. Estos sitios son los menos recomendados para cosecha, debido a que producen menos corteza por árbol, pero sirven para mantener a la especie en el lugar. Con base en estos resultados, podemos desarrollar programas de rehabilitación en áreas afectadas por la explotación comercial, establecer plantaciones forestales en sitios clave para asegurar el desarrollo de individuos con características deseables para cosecha de corteza y contribuir a la conservación in situ de H. latiflora en la Cuenca del Alto Balsas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[AbstractHintonia latiflora is a rare ecologically and economically important species from the Tropical Deciduous Forest of the Balsas Basin, Mexico, whose bark is traded as medicinal. Debarking practices have modified the shape of plants, their architecture and morphometry; but it is unknown if some topographic and edaphic factors may also influence in these attributes. Here we propose that the ecological conditions of this species distribution and harvesting areas, may determine the morphometric characteristics and the individuals variation in their architecture. To test this hypothesis we assessed the relationship of topographic and edaphic factors on the morphological characteristics of saplings (n = 143) and adults (n = 117), in eight harvesting areas of H. latiflora. The harvesting areas, with a surface of 0.6 ha, were selected randomly with the support of participatory mapping elaborated by gatherers of the study site. Data were analyzed using principal components (PCA) and canonical correspondence (CCA) analyses. The first three PC explained 92.1 % of the morphological variation; height, basal diameter, and coverage, explained morphometric differences in both, saplings and adults, in all eight harvesting zones. The terrain slope, slope orientation, soil depth and stoniness, were ecological factors statistically related with morphometric differences. A lower terrain slope, little stoniness, soil depth, slope orientation E-W in saplings (azimuth 90&#730;-270&#730;) and N-S in adults (azimuth 0&#730;-180&#730;) were the factors associated to height, number of basal branches, basal diameter and coverage of H. latiflora. Areas with higher harvesting intensity were composed by monopodic trees and some reiterated basitone individuals; the adults of these areas also had more fruits. At these sites, plants of H.latiflora were more abundant and produced more bark, but the high-intensity of harvesting, changes plant architecture, forming shrubby, multi-stemmed individuals, that originally were mesotone trees. Areas with lower harvesting intensity were characterized by steep slopes, shallow and rocky soils, and were dominated by basitone trees of smaller size, thin and scarce in the area. These sites are the least recommended for harvesting, because they produce less bark per tree, and serve to preserve the species at the site. Based on these results, we can develop restoration programs in areas affected by commercial harvesting, establish forestry plantations in key sites to ensure the establishment and development of individuals with desirable characteristics for bark harvesting and contribute to in situ conservation of H. latiflora in the Alto Balsas Basin. Rev. Biol. Trop. 65 (3): 900-916. Epub 2017 September 01.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[arquitectura vegetal]]></kwd>
<kwd lng="es"><![CDATA[bosque tropical caducifolio]]></kwd>
<kwd lng="es"><![CDATA[corteza medicinal]]></kwd>
<kwd lng="es"><![CDATA[cosecha comercial]]></kwd>
<kwd lng="es"><![CDATA[variación morfométrica]]></kwd>
<kwd lng="en"><![CDATA[commercial harvesting]]></kwd>
<kwd lng="en"><![CDATA[medicinal bark]]></kwd>
<kwd lng="en"><![CDATA[plant morphometric]]></kwd>
<kwd lng="en"><![CDATA[plant architecture]]></kwd>
<kwd lng="en"><![CDATA[tropical deciduous forest]]></kwd>
</kwd-group>
</article-meta>
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