<?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>0370-3908</journal-id>
<journal-title><![CDATA[Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. acad. colomb. cienc. exact. fis. nat.]]></abbrev-journal-title>
<issn>0370-3908</issn>
<publisher>
<publisher-name><![CDATA[Academia Colombiana de Ciencias Exactas, Físicas y Naturales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0370-39082024000300564</article-id>
<article-id pub-id-type="doi">10.18257/raccefyn.2647</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Un megaherbívoro invasor al descubierto: ecología de la población de hipopótamos (Hippopotamus amphibius) en Colombia]]></article-title>
<article-title xml:lang="en"><![CDATA[Uncovering an invasive mega-herbivore: the ecology of the hippos population (Hippopotamus amphibius) in Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno-Arias]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nova-León]]></surname>
<given-names><![CDATA[Laura J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Loaiza]]></surname>
<given-names><![CDATA[Lina M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bapstiste]]></surname>
<given-names><![CDATA[María P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montenegro-Díaz]]></surname>
<given-names><![CDATA[Olga L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Arevalo]]></surname>
<given-names><![CDATA[Hugo F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Loaiza]]></surname>
<given-names><![CDATA[Camilo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santamaría-Castiblanco]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Diaz-Rodríguez]]></surname>
<given-names><![CDATA[Gina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Humboldt Centro de colecciones y gestión de especies ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Colombia Grupo de morfología y ecología evolutiva ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de Colombia Grupo en conservación y manejo de vida silvestre Instituto de Ciencias Naturales]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2024</year>
</pub-date>
<volume>48</volume>
<numero>188</numero>
<fpage>564</fpage>
<lpage>581</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0370-39082024000300564&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0370-39082024000300564&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0370-39082024000300564&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Debido a las condiciones climáticas y ecológicas favorables de los ecosistemas colombianos, la población de hipopótamos introducida en los años 80 en el país, se ha incrementado y ahora se distribuye desde el valle medio del río Magdalena en Antioquia hasta la depresión momposina en Bolívar. Recientemente, el gobierno nacional declaró al hipopótamo como una especie invasora por los efectos negativos que causa su presencia en los ecosistemas, los medios de subsistencia y la vida de las personas. Se hizo un extenso estudio demográfico para determinar el tamaño y la estructura de la población de hipopótamos, describir su distribución espacial y proyectar su dinámica poblacional futura. Usando múltiples técnicas, se obtuvieron registros directos e indirectos que permitieron estimar una población de al menos 181 hipopótamos distribuidos en siete grupos, de los cuales cinco se encuentran en etapas avanzadas de invasión biológica. Dada la estructura y el tamaño poblacional estimados, se espera que la población llegue a mil individuos alrededor del 2040 si no se implementan medidas urgentes para su erradicación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Due to the favorable climatic and ecological conditions offered by Colombian ecosystems, the hippo population introduced into the country in the 1980s has increased and now it has spread from the middle valley of the Magdalena River in Antioquia to the Mompós Depression in Bolívar. Recently, the Colombian government declared it as an invasive species for its negative effects on the ecosystems and people's lives and livelihoods. In this context, we conducted a demographic study to estimate the population size and structure, describe its spatial distribution, and project the population dynamics into the future. We used direct and indirect records to estimate a population of at least 181 hippos distributed in seven groups, five in advanced stages of biological invasion. Given their current structure and size, the hippo population will reach 1,000 individuals around 2040 if no urgent eradication actions are taken.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Área de distribución de uso]]></kwd>
<kwd lng="es"><![CDATA[Análisis de viabilidad poblacional]]></kwd>
<kwd lng="es"><![CDATA[Dinámica de poblaciones]]></kwd>
<kwd lng="es"><![CDATA[Especies invasoras]]></kwd>
<kwd lng="es"><![CDATA[Metapoblaciones]]></kwd>
<kwd lng="es"><![CDATA[Aeronaves no tripuladas]]></kwd>
<kwd lng="en"><![CDATA[Utilization distribution area]]></kwd>
<kwd lng="en"><![CDATA[Invasive species]]></kwd>
<kwd lng="en"><![CDATA[Population dynamics]]></kwd>
<kwd lng="en"><![CDATA[Population viability analysis]]></kwd>
<kwd lng="en"><![CDATA[Unmanned Aircrafts]]></kwd>
</kwd-group>
</article-meta>
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