<?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>0187-7151</journal-id>
<journal-title><![CDATA[Acta botánica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Act. Bot. Mex]]></abbrev-journal-title>
<issn>0187-7151</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ecología A.C., Centro Regional del Bajío]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-71512021000100101</article-id>
<article-id pub-id-type="doi">10.21829/abm128.2021.1701</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Fenología de la especie amenazada Leptocereus scopulophilus (Cactaceae) en un bosque semideciduo de Cuba occidental]]></article-title>
<article-title xml:lang="en"><![CDATA[Phenology of the threatened species Leptocereus scopulophilus (Cactaceae) in a semi-deciduous forest of western Cuba]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Toledo]]></surname>
<given-names><![CDATA[Sandy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barrios]]></surname>
<given-names><![CDATA[Duniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Beltrán]]></surname>
<given-names><![CDATA[José Angel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Torres]]></surname>
<given-names><![CDATA[Luis Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Concepción Facultad de Ciencias Naturales y Oceanográficas ]]></institution>
<addr-line><![CDATA[Concepción ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de La Habana Jardín Botánico Nacional ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,University of British Columbia Department of Botany ]]></institution>
<addr-line><![CDATA[Vancouver ]]></addr-line>
<country>Canada</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<numero>128</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-71512021000100101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-71512021000100101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-71512021000100101&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes y Objetivos: Los estudios fenológicos han mostrado su utilidad para entender la dinámica de los ecosistemas y pueden ser útiles para la conservación de especies vegetales. En cactáceas son escasos los estudios que evalúan la fenología reproductiva y vegetativa, en particular sobre especies de bosques semideciduos. El presente estudio aborda diferentes aspectos de la fenología de Leptocereus scopulophilus, una cactácea amenazada y endémica presente en un bosque semideciduo de Cuba occidental. Este estudio tiene como objetivos principales caracterizar la fenología de L. scopulophilus, comparar su comportamiento interanual con diferentes regímenes de precipitación y evaluar las relaciones entre las fenofases y las variables ambientales.  Métodos: Se seleccionaron 50 individuos adultos y se registraron, mensualmente durante tres años, el número de botones, flores, frutos, así como el crecimiento vegetativo y los retrocesos de una rama seleccionada al azar. Se evaluaron mensualmente el porcentaje de iluminación, la temperatura, la humedad relativa y las precipitaciones. Los patrones anuales e interanuales de cada fenofase fueron comparados mediante estadística circular. La relación existente entre variables ambientales y las fenofases se evaluó con una correlación de Spearman.  Resultados clave: Los patrones de floración y fructificación resultaron unimodales con máximos desfasados en un mes. La floración coincidió con el final de la época seca y la fructificación ocurrió al inicio de la época lluviosa. El crecimiento vegetativo fue generalmente de forma aleatoria y simultáneo a la reproducción, mientras el retroceso de las ramas sucedió durante la época lluviosa. La variable más correlacionada con las fenofases fue la iluminación.  Conclusiones: La apertura del dosel del bosque semideciduo donde habita L. scopulophilus favorece la reproducción y el crecimiento de sus ramas. Este evento estuvo modulado por la duración e intensidad de las lluvias de la temporada previa.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background and Aims:  Phenological studies have shown their utility in understanding the ecosystem dynamics and could be useful for the conservation of plant species. In cacti, studies evaluating reproductive and vegetative phenology are still scarce, particularly in species inhabiting semi-deciduous forest. The present study addresses different aspects of the phenology of Leptocereus scopulophilus, an endemic threatened cactus inhabiting a semi-deciduous forest of western Cuba. The main objectives of this study are to characterize the phenology of L. scopulophilus, to compare its interannual behavior in years with different rainfall regimes, and to evaluate the relationships between phenophases and environmental variables.  Methods:  Fifty adult individuals were selected and the number of buds, flowers, fruits, as well as vegetative growth and retrogressions of a randomly selected branch were recorded monthly for three years. The percentage of lighting, temperature, relative humidity and rainfall was evaluated monthly. The annual and interannual patterns of each phenophase were compared using circular statistics. The relationship between climatic variables and the phenophases was evaluated using a Spearman correlation.  Key results:  Flowering and fruiting patterns were unimodal with lagged maximums in one month. Flowering coincided with the late dry season and fruiting occurred at the beginning of the rainy season. Vegetative growth generally occurred randomly and simultaneously with reproduction, while the retrogressions occurred during the rainy season. The variable most correlated with the phenophases was lighting.  Conclusions: The opening of the canopy of the semi-deciduous forest where L. scopulophilus occurs favors the reproduction and growth of its branches. This event was modulated by the duration and intensity of the rains of the previous season.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[cambios estacionales]]></kwd>
<kwd lng="es"><![CDATA[crecimiento vegetativo]]></kwd>
<kwd lng="es"><![CDATA[estadística circular]]></kwd>
<kwd lng="es"><![CDATA[floración]]></kwd>
<kwd lng="es"><![CDATA[fructificación]]></kwd>
<kwd lng="es"><![CDATA[retroceso de las ramas]]></kwd>
<kwd lng="es"><![CDATA[variables ambientales]]></kwd>
<kwd lng="en"><![CDATA[branch retrogressions]]></kwd>
<kwd lng="en"><![CDATA[circular statistics]]></kwd>
<kwd lng="en"><![CDATA[climatic variables]]></kwd>
<kwd lng="en"><![CDATA[flowering]]></kwd>
<kwd lng="en"><![CDATA[fruiting seasonal changes]]></kwd>
<kwd lng="en"><![CDATA[vegetative growth]]></kwd>
</kwd-group>
</article-meta>
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