<?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>2007-4298</journal-id>
<journal-title><![CDATA[Botanical Sciences]]></journal-title>
<abbrev-journal-title><![CDATA[Bot. sci]]></abbrev-journal-title>
<issn>2007-4298</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Botánica de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-42982016000300513</article-id>
<article-id pub-id-type="doi">10.17129/botsci.525</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Demographic analysis of Agave angustifolia (Agavaceae) with an emphasis on ecological restoration]]></article-title>
<article-title xml:lang="es"><![CDATA[Análisis demográfico de Agave angustifolia (Agavaceae) con énfasis en la restauración ecológica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arias-Medellín]]></surname>
<given-names><![CDATA[Luis Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bonfil]]></surname>
<given-names><![CDATA[Consuelo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valverde]]></surname>
<given-names><![CDATA[Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias Departamento de Ecología y Recursos Naturales]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<volume>94</volume>
<numero>3</numero>
<fpage>513</fpage>
<lpage>530</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982016000300513&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982016000300513&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982016000300513&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: We studied the demography of two populations of Agave angustifolia, one in a preserved tropical dry forest (Xochicalco), and the other one in a pastureland area used for cattle grazing (Tembembe), to test whether populations are likely to thrive on the deteriorated habitats left after cattle ranching. Seed germination and seedling survival experiments were carried out in different natural microsites (i.e. under tree canopies and in open microsites). We built Lefkovitch matrices and carried out prospective (elasticity) and retrospective (Life Table Response Experiments) analyses for both populations. Numerical simulations were performed to project the effect of inflorescences harvest and seedling introduction. Seedling survival and seed germination were highest in Tembembe. Population growth rate was slightly higher in Tembembe (lambda = 1.268) than in Xochicalco (lambda = 1.208). Prospective and retrospective analyses showed that stasis and growth contributed most to population growth rate and that the differences between the two populations were accounted for a lower fecundity and stasis in Xochicalco compared to Tembembe. Simulations of inflorescence harvest showed that lambda dropped below unity only when all inflorescences were eliminated. The simulated introduction of seedlings produced a substantial rise in lambda. As the lambda values reflect thriving populations at both sites, we suggest that this species could be successfully used in restoration programs.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Se estudió la demografía de dos poblaciones de Agave angustifolia, una en un bosque tropical seco conservado (Xochicalco), y otra en un pastizal utilizado para alimentar al ganado (Tembembe), para saber si las poblaciones podrían desarrollarse en hábitats deteriorados abandonados después de ser utilizados para pastoreo. Los experimentos de germinación de semillas y supervivencia de plántulas se llevaron a cabo en diferentes micrositios naturales (i.e. debajo de la copa de árboles y en micrositios abiertos). Se construyeron matrices de Lefkovitch y se llevaron a cabo análisis prospectivos (elasticidades) y retrospectivos (Experimentos de Respuesta de Tablas de Vida) para ambas poblaciones. Se realizaron simulaciones numéricas para proyectar el efecto del corte de inflorescencias y la introducción de plántulas. La supervivencia de plántulas y la germinación de semillas fueron mayores en Tembembe. La tasa de crecimiento poblacional fue ligeramente mayor en Tembembe (lambda = 1.268) que en Xochicalco (lambda = 1.208). Los análisis prospectivos y retrospectivos mostraron que la estasis y el crecimiento fueron los que más contribuyeron a la tasa de crecimiento poblacional y que las diferencias entre las dos poblaciones se debieron a la menor fecundidad y estasis en Xochicalco comparado con Tembembe. Las simulaciones del corte de inflorescencias mostraron que el valor de lambda disminuyó por debajo de la unidad solamente cuando todas las inflorescencias fueron eliminadas. La simulación de la introducción de plántulas produjo un aumento substancial en lambda. Como los valores de lambda reflejan poblaciones en desarrollo en ambos sitios, sugerimos que esta especie puede ser utilizada exitosamente en programas de restauración.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[elasticity analyses]]></kwd>
<kwd lng="en"><![CDATA[life table response experiments]]></kwd>
<kwd lng="en"><![CDATA[native species]]></kwd>
<kwd lng="en"><![CDATA[population projection matrices]]></kwd>
<kwd lng="en"><![CDATA[tropical dry forest]]></kwd>
<kwd lng="es"><![CDATA[análisis de elasticidad]]></kwd>
<kwd lng="es"><![CDATA[bosque tropical seco]]></kwd>
<kwd lng="es"><![CDATA[especie nativa]]></kwd>
<kwd lng="es"><![CDATA[experimentos de respuesta de tabla de vida]]></kwd>
<kwd lng="es"><![CDATA[matrices de proyección poblacional]]></kwd>
</kwd-group>
</article-meta>
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