<?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>S0034-77442015000500131</article-id>
<article-id pub-id-type="doi">10.15517/rbt.v63i1.23100</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Rasgos oceanográficos en el Golfo Dulce, Pacífico de Costa Rica: una revisión para la toma de decisiones en conservación marina]]></article-title>
<article-title xml:lang="en"><![CDATA[Oceanographic features of Golfo Dulce, Costa Rican Pacific: a review for decision-making in marine conservation]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morales-Ramírez]]></surname>
<given-names><![CDATA[Álvaro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Acuña-González]]></surname>
<given-names><![CDATA[Jenaro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lizano]]></surname>
<given-names><![CDATA[Omar]]></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="A5"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alfaro]]></surname>
<given-names><![CDATA[Eric]]></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="A5"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[Eddy]]></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="A6"/>
</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 José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Costa Rica Escuela de Biología ]]></institution>
<addr-line><![CDATA[San José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Costa Rica Escuela de Química ]]></institution>
<addr-line><![CDATA[San José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Costa Rica Escuela de Física ]]></institution>
<addr-line><![CDATA[San José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad de Costa Rica Centro de Investigaciones Geofísicas ]]></institution>
<addr-line><![CDATA[San José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad de Cádiz Facultad de Ciencias del Mar y Ambientales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Spain</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2015</year>
</pub-date>
<volume>63</volume>
<fpage>131</fpage>
<lpage>160</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0034-77442015000500131&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0034-77442015000500131&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0034-77442015000500131&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se indagó, de septiembre del 2005 a noviembre del 2007, las propiedades oceanográficas físicas, químicas y biológicas (zooplancton) más relevantes del Golfo Dulce, Pacífico Sur de Costa Rica, y las tipologías meteorológicas de la zona, con el objetivo de analizarlas y hacerlas disponibles como referencia en el establecimiento de actividades adecuadas para su conservación, dado que es un ecosistema acuático único en Costa Rica. El patrón de circulación de las aguas en el Golfo Dulce es el típico de estuarios tipo fiordo, con una estratificación de flujo en la columna de agua. Las corrientes marinas superficiales alcanzaron velocidades cercanas a los 18cm/s en la región de entrada al Golfo, que disminuyeron al ampliarse el área del golfo donde las velocidades llegaron a alcanzar poco más de 5cm/s en el extremo noroeste, Rincón. Predominó el flujo superficial de este-oeste, mientras que en la zona de Puerto Jiménez la velocidad fue moderada de 5.4cm/s con dirección sur. Se detectaron velocidades mayores cercanas al umbral de la entrada del golfo (17.8cm/s) y en el fondo el ámbito fue de 2.0cm/s a 4.8cm/s. Se establecieron cinco sitios de muestreo denominados GD1, GD2, GD3, GD4 y GD5, que se visitaron en cinco ocasiones, excepto en GD5 que se visitó solo una vez. No se detectó la ausencia de oxígeno disuelto en las aguas profundas del Golfo (70m a los 140m), aunque las concentraciones fueron bajas (0.25mg/L a 1.10mg/L). La distribución de las concentraciones de los nutrimentos reflejó los patrones usuales para sistemas estuarinos a nivel horizontal, y a nivel vertical las concentraciones de fosfato y silicato fueron mayores al descender en la columna de agua, tanto en la estación lluviosa como en la seca. La descomposición de la materia orgánica fue evidente puesto que las concentraciones de nitrato fueron incrementándose en las aguas profundas. De los datos de concentración de nutrimentos, se deduce que el Golfo Dulce puede ser considerado como un cuerpo de agua que se mantiene en un estado de muy buena calidad ambiental. El grupo zooplánctico dominante fue el de los copédodos (44%-83.6%). Los vientos oeste ecuatoriales se detectaron en junio y fueron más intensos entre septiembre y octubre, lo que correspondió con promedios altos de altura de las olas. A su vez, los vientos alisios de diciembre a abril disminuyeron la energía del oleaje que entra al golfo y por lo tanto la altura promedio de las olas. El ciclo anual de la precipitación fue un patrón bimodal típico del Pacífico de América Central, con máximos en mayo y octubre, con la interrupción debida al veranillo o canícula, y un mínimo de precipitación ocurrió en febrero. Golfo Dulce es un ambiente único en todo el Pacífico Este Tropical, y aunque parezca mostrar condiciones ambientales saludables, está amenazado por muchas actividades humanas; ante todo urge el establecimiento de políticas de ordenamiento y planificación de las mismas, para proteger el ecosistema bajo los principios de uso sostenible.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract From September 2005 to November 2007 we studied the meteorological typologies and the physical, chemical and zooplankton oceanography of Golfo Dulce, a unique aquatic ecosystem in the South Pacific of Costa Rica. The water circulation pattern in Golfo Dulce is typical of fjord-type estuaries, with flux stratification within the water column. Surface water currents reached speeds near 18cm/s in the vicinity of the sill and diminished inward to the northwest at around 5cm/s. The east-west flux was predominant, whereas near Puerto Jiménez the speed was a moderated 5.4cm/s with a south direction. Higher speeds were found near the sill (17.8cm/s) and at the bottom (2.0cm/s to 4.8cm/s). One station was visited once, five were visited five times each. Dissolved oxygen was not absent in deep waters (70m to 140m), but concentrations were low (0.25mg/L to 1.10mg/L). Nutrient concentrations and distribution had the usual horizontal estuarine patterns and for the vertical level phosphate and silicate concentrations increased with depth. Decomposition of organic matter was evident because nitrate concentrations were higher in deep waters. Surface nutrient concentrations indicated the gulf has good environmental quality that sustains a variety of life. Copepods dominated zooplankton (44%83.6%). The strongest equatorial westerlies were detected between September and October, coincident with higher wave heights. The trade winds blowing from December to April reduced the energy of entering waves and therefore the mean wave height. The annual rainfall cycle was the typical bimodal pattern from the Central America Pacific, with maxima in May and October, except for the midsummer interruption, and minimum rain was on February. Golfo Dulce is a unique environment in the Eastern Tropical Pacific, shows healthy environmental conditions, and is threatened; therefore we urge the establishment of zoning policy for human activities, and to improve protection under the principles of sustainable use. Rev. Biol. Trop. 63 (Suppl. 1): 131-160. Epub 2015 April 01.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[fiordo tropical]]></kwd>
<kwd lng="es"><![CDATA[Pacífico Este Tropical]]></kwd>
<kwd lng="es"><![CDATA[corrientes de agua]]></kwd>
<kwd lng="es"><![CDATA[sistema de vientos]]></kwd>
<kwd lng="es"><![CDATA[nutrimentos]]></kwd>
<kwd lng="es"><![CDATA[zooplancton]]></kwd>
<kwd lng="en"><![CDATA[tropical fjord]]></kwd>
<kwd lng="en"><![CDATA[Tropical East Pacific]]></kwd>
<kwd lng="en"><![CDATA[water currents]]></kwd>
<kwd lng="en"><![CDATA[wind system]]></kwd>
<kwd lng="en"><![CDATA[nutrients]]></kwd>
<kwd lng="en"><![CDATA[zooplankton]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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