<?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>S0034-77442025000200012</article-id>
<article-id pub-id-type="doi">10.15517/rev.biol.trop..v73is1.63714</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Soft-bottom benthic assemblage changes due to tropical seasonal upwelling (Bahía Salinas, Costa Rican Pacific)]]></article-title>
<article-title xml:lang="es"><![CDATA[Cambios en el ensamblaje bentónico de fondos blandos debido al afloramiento estacional tropical (Bahía Salinas, Pacífico, Costa Rica)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sibaja-Cordero]]></surname>
<given-names><![CDATA[Jeffrey-A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cortés]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bogantes]]></surname>
<given-names><![CDATA[Viktoria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A3"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas]]></surname>
<given-names><![CDATA[Rita]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Mendez]]></surname>
<given-names><![CDATA[Kimberly]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A4"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Costa Rica Centro de Investigación en Ciencias del Mar y Limnología (CIMAR) ]]></institution>
<addr-line><![CDATA[San Pedro San José]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Costa Rica Escuela de Biología Museo de Zoología]]></institution>
<addr-line><![CDATA[San Pedro San José]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,University of West Florida Department of Biology ]]></institution>
<addr-line><![CDATA[ FL]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Smithsonian Tropical Research Institute O&#8217;Dea Lab ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Panama</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2025</year>
</pub-date>
<volume>73</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0034-77442025000200012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0034-77442025000200012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0034-77442025000200012&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  Seasonal upwelling is a displacement offshore of surface seawater and replacement by cool deeper water with higher nutrient levels by the influence of the wind. On the north Pacific coast of Costa Rica the upwelling is present from December to April.  Objective:  Within this seasonal upwelling area, Salinas Bay was sampled to determine whether the upwelling has an effect on the diversity, composition, and trophic guilds of the soft-bottom benthic community.  Methods:  The bay was visited during the upwelling and non-upwelling seasons of 2007-2009. A number of six to nine grab samples were taken in each sampling event.  Results:  Richness and abundance were lower in the non-upwelling season and the highest values were observed at the end of the upwelling. The taxa composition of assemblages varied partially across the seasons, depending on the upwelling intensity.  Conclusions:  The species composition was more diverse and abundant at the end of the upwelling season than at the start or in the non-upwelling season. Differences in infaunal assemblages during the seasonal upwelling could be explained by the change in characteristics of the sediment-water interface, nutrients, and sediment movements that promote the increase of planktonic productivity, and thus food availability.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción:  El afloramiento estacional es un desplazamiento de agua de mar superficial hacia la costa y su reemplazo por agua más profunda y fría con mayores niveles de nutrientes por la influencia del viento. En la costa norte del Pacífico de Costa Rica, el afloramiento está presente de diciembre a abril.  Objetivo:  Dentro de esta área de afloramiento estacional, se muestreó la Bahía de Salinas para determinar si el afloramiento tiene un efecto sobre la diversidad, composición y gremios tróficos de la comunidad bentónica de fondos blandos.  Métodos:  La bahía fue visitada durante las temporadas de afloramiento y no afloramiento de 2007-2009. Se tomaron de seis a nueve muestras al azar en cada evento de muestreo.  Resultados:  La riqueza y abundancia fueron menores en la temporada sin afloramiento y los valores más altos se observaron al final del afloramiento. La composición de taxones de los ensamblajes varió parcialmente a lo largo de las estaciones, dependiendo de la intensidad del afloramiento.  Conclusiones:  La composición de especies fue más diversa y abundante al final de la temporada de afloramiento que al inicio o en la temporada sin afloramiento. Las diferencias en los conjuntos infaunales durante el afloramiento estacional podrían explicarse por el cambio en las características de la interfaz sedimento-agua, los nutrientes y los movimientos de sedimentos que promueven el aumento de la productividad planctónica y, por lo tanto, la disponibilidad de alimentos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[diversity]]></kwd>
<kwd lng="en"><![CDATA[benthos]]></kwd>
<kwd lng="en"><![CDATA[sediment processes]]></kwd>
<kwd lng="en"><![CDATA[recruitment]]></kwd>
<kwd lng="en"><![CDATA[nutrient dynamics]]></kwd>
<kwd lng="en"><![CDATA[mollusks]]></kwd>
<kwd lng="en"><![CDATA[population dynamics.]]></kwd>
<kwd lng="en"><![CDATA[diversidad]]></kwd>
<kwd lng="en"><![CDATA[bentos]]></kwd>
<kwd lng="en"><![CDATA[procesos sedimentarios]]></kwd>
<kwd lng="en"><![CDATA[reclutamiento]]></kwd>
<kwd lng="en"><![CDATA[dinámica de nutrientes, moluscos]]></kwd>
<kwd lng="en"><![CDATA[dinámica poblacional.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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