<?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>1659-4266</journal-id>
<journal-title><![CDATA[Cuadernos de Investigación UNED]]></journal-title>
<abbrev-journal-title><![CDATA[Cuadernos de Investigación UNED]]></abbrev-journal-title>
<issn>1659-4266</issn>
<publisher>
<publisher-name><![CDATA[Universidad Estatal a Distancia de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1659-42662019000200048</article-id>
<article-id pub-id-type="doi">10.22458/urj.v11i2.2296</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estimación de la abundancia de Caiman crocodilus (Crocodilia: Alligatoridae) en Caño Negro, Costa Rica, utilizando el modelo N-mixture]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aranda-Coello]]></surname>
<given-names><![CDATA[J. Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Instituto Internacional en Conservación y Manejo de Vida Silvestre ]]></institution>
<addr-line><![CDATA[ Heredia]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Red Mesoamericana y del Caribe para la Conservación de Anfibios y Reptiles  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</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>11</volume>
<numero>2</numero>
<fpage>48</fpage>
<lpage>53</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-42662019000200048&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-42662019000200048&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-42662019000200048&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Introducción: El tamaño (N) de las poblaciones de cocodrilos rara vez se puede determinar con precisión. Objetivo: comparar la abundancia con recuentos repetidos espacialmente, con el Modelo de N-mezclas y con el Método Messel, usando una población costarricense. Métodos: conté caimanes por la noche a lo largo de 21km del río Frío (Betel-Boga Sabogal). Dividí el tramo en 32 segmentos (500m) separados 200m entre sí. Resultado: el modelo N-mezclas produjo una estimación de 2 162 individuos y el Messel 373. Conclusión: los recuentos repetidos espacialmente y analizados con el modelo N-mezclas, parecen proporcionar datos más confiables.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT &#8220;Estimation of abundance of Caiman crocodilus (Crocodilia: Alligatoridae) in Caño Negro, Costa Rica, using the N-mixture model&#8221;. Introduction: the size (N) of the crocodilian populations can rarely be determined accurately. Objective: to compare methods, the abundance of Caiman crocodilus was estimated for a single population in Costa Rica with spatially replicated counts, with the N-mixture Model and the Messel Method. Methods: I counted caimans at night along 21km of the river Frío (Betel-Boga Sabogal). I divided the stretch into 32 segments (500m) spaced 200m from each other. Results: the N-Mixture model produced an estimate of 2 162 individuals and the Messel 373. Conclusion: spatially replicated counts, analyzed with the N-Mixture model, seem to provide more reliable data.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[conservation]]></kwd>
<kwd lng="en"><![CDATA[nocturnal visual counts]]></kwd>
<kwd lng="en"><![CDATA[population size]]></kwd>
<kwd lng="en"><![CDATA[wildlife management]]></kwd>
<kwd lng="en"><![CDATA[Messel method]]></kwd>
<kwd lng="en"><![CDATA[monitoring]]></kwd>
<kwd lng="es"><![CDATA[conservación]]></kwd>
<kwd lng="es"><![CDATA[conteos visuales nocturnos]]></kwd>
<kwd lng="es"><![CDATA[tamaño de la población]]></kwd>
<kwd lng="es"><![CDATA[manejo de vida silvestre]]></kwd>
<kwd lng="es"><![CDATA[método de Messel]]></kwd>
<kwd lng="es"><![CDATA[monitoreo]]></kwd>
</kwd-group>
</article-meta>
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