<?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>2215-3896</journal-id>
<journal-title><![CDATA[Revista de Ciencias Ambientales]]></journal-title>
<abbrev-journal-title><![CDATA[Ciencias Ambientales]]></abbrev-journal-title>
<issn>2215-3896</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2215-38962019000100092</article-id>
<article-id pub-id-type="doi">10.15359/rca.53-1.5</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación preliminar de la influencia del área agrícola sobre la calidad del agua en el Golfo Dulce, Costa Rica]]></article-title>
<article-title xml:lang="en"><![CDATA[Preliminary Assessment of the Influence of the Agricultural Area to the Quality of Water in the Dulce Gulf, Costa Rica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fournier]]></surname>
<given-names><![CDATA[María Luisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castillo]]></surname>
<given-names><![CDATA[Luisa E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moraga]]></surname>
<given-names><![CDATA[Geannina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruepert]]></surname>
<given-names><![CDATA[Clemens]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional (UNA), Instituto Regional de Estudios en Sustancias Tóxicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional (UNA) Instituto Regional de Estudios en Sustancias Tóxicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional (UNA) Instituto Regional de Estudios en Sustancias Tóxicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional (UNA) Instituto Regional de Estudios en Sustancias Tóxicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Nacional (UNA) Instituto Regional de Estudios en Sustancias Tóxicas ]]></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>53</volume>
<numero>1</numero>
<fpage>92</fpage>
<lpage>112</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S2215-38962019000100092&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S2215-38962019000100092&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S2215-38962019000100092&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se realizó una evaluación preliminar de la agricultura en las subcuencas Esquinas, Coto Colorado, Rincón, Conte, Agujas, Tigre y Palma, como criterio base para el diseño de un plan de seguimiento de la calidad del agua que ingresa al estuario. Se determinó el área de los cultivos, mediante interpretación de imágenes satelitales, para un total aproximado de 10 000 ha de arroz Oryza sativa y 31 000 ha de palma aceitera Elaeis guineensis. El uso de agroquímicos se estimó con base en información secundaria publicada y con encuestas administradas a grupos productores. El uso anual estimado de plaguicidas fue de 20.4 kg ha-1 en arroz y 6.6 kg ha-1 en palma, y 840 kg ha-1 año-1 de fertilizantes granulados en ambos cultivos. Asimismo, se hizo un muestreo puntual de residuos de plaguicidas en agua, sedimento y peces, analizados con cromatografía de gases acoplada a espectrometría de masas y cromatografía de líquidos con detector de arreglo de diodos. En todas las muestras de agua se detectó el herbicida clomazone. Además, en la subcuenca Coto Colorado, la cual abarca el 95 % del total del área agrícola que drena al golfo, se detectó el insecticida triazofos y los fungicidas isoprotiolano y propiconazol. La extensión y el manejo de las plantaciones agrícolas en la cuenca del Golfo Dulce, aunada a factores ambientales, podría representar una amenaza sobre los recursos del estuario. Por ello, se recomienda monitorear la calidad del agua en los ríos, así como iniciar programas de restauración de los bosques de ribera como medida de mitigación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract With the purpose of designing a quality control program of the waters entering the estuary, a preliminary assessment of agricultural activity was done in the sub-basins Esquinas, Coto Colorado, Rincón, Conte, Agujas, Tigre, and Palma. The extension of the cultivated area was determined through interpretation of satellite images. With secondary information and surveys to producers, the use of pesticides and fertilizers was estimated. A point sampling was done for pesticide residues in water, sediment, and fish. The samples were analyzed with gas chromatography with mass detection and liquid chromatography with a diode array detector. An area of 10,000 ha of rice Oryza sativa and 31,000 ha of oil palm Elaeis guineensis plantations was estimated. Annual use of pesticides was estimated in 20.4 kg ha-1 in rice and 6.6 kg ha-1 in oil palm, and 840 kg ha-1 yr-1 of granulated fertilizers in both crops. The herbicide clomazone was detected in all water samples. Furthermore, in the Coto Colorado sub-basin, which encompasses 95 % of the total agricultural area that drains into the gulf, the insecticide triazophos and fungicides isoprothiolane and propiconazole were also detected. The extension and management of agricultural plantations in the watershed that drains into the Golfo Dulce, in addition to its environmental factors, could pose a threat to the estuary resources. It is advisable to monitor the quality of water in rivers, as well as to develop programs for the restoration of the riparian forests as a mitigation measure.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Arroz]]></kwd>
<kwd lng="es"><![CDATA[contaminación]]></kwd>
<kwd lng="es"><![CDATA[cultivos]]></kwd>
<kwd lng="es"><![CDATA[estuario]]></kwd>
<kwd lng="es"><![CDATA[Golfo Dulce]]></kwd>
<kwd lng="es"><![CDATA[palma aceitera]]></kwd>
<kwd lng="en"><![CDATA[Estuary]]></kwd>
<kwd lng="en"><![CDATA[crops, Golfo Dulce]]></kwd>
<kwd lng="en"><![CDATA[pollution]]></kwd>
<kwd lng="en"><![CDATA[rice, oil palm]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="book">
<collab>American Public Health Association (APHA)</collab>
<source><![CDATA[Standard Methods for the Examination of Water and Wastewater]]></source>
<year>2005</year>
<publisher-loc><![CDATA[Washington DC ]]></publisher-loc>
<publisher-name><![CDATA[APHA]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Araya-Alpízar]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Galindo-Villardon]]></surname>
<given-names><![CDATA[M. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Tamaño de la muestra en investigación clínica]]></article-title>
<source><![CDATA[Medicina Clínica]]></source>
<year>2009</year>
<volume>133</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>26-30</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Beketov]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Kefford]]></surname>
<given-names><![CDATA[B. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Schäfer]]></surname>
<given-names><![CDATA[R. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Liess]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pesticides reduce regional biodiversity of stream invertebrates]]></article-title>
<source><![CDATA[Proceedings of the National Academy of Sciences of USA]]></source>
<year>2013</year>
<volume>110</volume>
<numero>27</numero>
<issue>27</issue>
<page-range>11039-43</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bravo]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[de la Cruz]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Herrera]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramírez]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Uso de plaguicidas en cultivos agrícolas como herramienta para el monitoreo de peligros en salud]]></article-title>
<source><![CDATA[Uniciencia]]></source>
<year>2013</year>
<volume>27</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>351-76</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chacón-Chaverri]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez-Cascante]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Rojas]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Fonseca]]></surname>
<given-names><![CDATA[L.G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Golfo Dulce, Costa Rica, un área importante de alimentación para la tortuga carey del Pacífico Oriental (Eretmochelys imbricata)]]></article-title>
<source><![CDATA[Revista Biología Tropical]]></source>
<year>2015</year>
<volume>63</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>351-62</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cortés]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Los arrecifes coralinos de Golfo Dulce, Costa Rica: Aspectos ecológicos]]></article-title>
<source><![CDATA[Revista Biología Tropical]]></source>
<year>1992</year>
<volume>40</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>19-26</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dosskey]]></surname>
<given-names><![CDATA[M. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Vidon]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Gurwick]]></surname>
<given-names><![CDATA[N. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Allan]]></surname>
<given-names><![CDATA[C. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Duval]]></surname>
<given-names><![CDATA[T. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Lowrance]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Role of Riparian Vegetation in Protecting and Improving Chemical Water Quality in Streams]]></article-title>
<source><![CDATA[Journal of the American Water Resources Association]]></source>
<year>2010</year>
<volume>42</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>261-77</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Echeverría-Sáenz]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Mena]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Pinnock]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruepert]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Solano]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[de la Cruz]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Campos]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez-Ávila]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Lacorte]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Barata]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Environmental hazards of pesticides from pineapple crop production in the Río Jiménez watershed (Caribbean Coast, Costa Rica)]]></article-title>
<source><![CDATA[Science of the Total Environment]]></source>
<year>2012</year>
<numero>440</numero>
<issue>440</issue>
<page-range>106-14</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Echeverría-Sáenz]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Mena]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Arias-Andrés]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Vargas]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruepert]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Van den Brink]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Castillo]]></surname>
<given-names><![CDATA[L.E.]]></given-names>
</name>
<name>
<surname><![CDATA[Gunnarsson]]></surname>
<given-names><![CDATA[P.S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[In situ toxicity and ecological risk assessment of agro-pesticide runoff in the Madre de Dios River in Costa Rica]]></article-title>
<source><![CDATA[Environmental Science and Pollution Research]]></source>
<year>2018</year>
<numero>25</numero>
<issue>25</issue>
<page-range>13270-82</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="">
<collab>Environmental Protection Agency (EPA)</collab>
<source><![CDATA[Method 3546 Microwave extraction. Test Methods for Evaluating Solid Waste: Physical/Chemical Methods]]></source>
<year>2007</year>
<month>a</month>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="">
<collab>Environmental Protection Agency (EPA)</collab>
<source><![CDATA[Clomazone Summary Document: Registration Review]]></source>
<year>2007</year>
<month>b</month>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ewel]]></surname>
<given-names><![CDATA[K. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Twilley]]></surname>
<given-names><![CDATA[R. R]]></given-names>
</name>
<name>
<surname><![CDATA[Ong]]></surname>
<given-names><![CDATA[J. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Different kinds of mangrove forests provide different goods and services]]></article-title>
<source><![CDATA[Global Ecology &amp; Biogeography Letters]]></source>
<year>1998</year>
<numero>7</numero>
<issue>7</issue>
<page-range>83-94</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fournier]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Echeverría-Sáenz]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Mena]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Arias-Andrés]]></surname>
<given-names><![CDATA[de la Cruz E.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruepert]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Risk assessment of agriculture impact on the Frío River watershed and Caño Negro Ramsar wetland, Costa Rica]]></article-title>
<source><![CDATA[Environmental Science Pollution Research]]></source>
<year>2018</year>
<numero>25</numero>
<issue>25</issue>
<page-range>13347-59</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gil]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Sinfortc]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Emission of pesticides to the air during sprayer application: A bibliographic review]]></article-title>
<source><![CDATA[Atmospheric Environment]]></source>
<year>2005</year>
<volume>39</volume>
<numero>28</numero>
<issue>28</issue>
<page-range>5183-93</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Howarth]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Coastal nitrogen pollution: A review of sources and trends globally and regionally]]></article-title>
<source><![CDATA[Harmful Algae]]></source>
<year>2008</year>
<numero>8</numero>
<issue>8</issue>
<page-range>14-20</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lei]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
</person-group>
<source><![CDATA[A Marine and coastal dynamics and primary production response in Golfo Dulce, Costa Rica. A multi-sensor satellite approach]]></source>
<year>2002</year>
<publisher-name><![CDATA[International Institute of Geoinformation and Earth Observation, The Netherlands]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lindgren]]></surname>
<given-names><![CDATA[D. T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fundamentals of photointerpretation. In Land use planning and remote sensing. Remote Sensing of Earth Resources and Environment]]></source>
<year>1985</year>
<volume>2</volume>
<publisher-loc><![CDATA[Dordrecht, Holland ]]></publisher-loc>
<publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mena]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Campos]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez-Ávila]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Faria]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Pinnock]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[de la Cruz]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Lacorte.]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[C.]]></surname>
<given-names><![CDATA[Barata]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pesticide residue analyses and biomarker responses of native Costa Rican fish of the Poeciliidae and Cichlidae families to assess environmental impacts of pesticides in Palo Verde National Park]]></article-title>
<source><![CDATA[Environmental Biology]]></source>
<year>2014</year>
<numero>35</numero>
<issue>35</issue>
<page-range>19-27</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<collab>Ministerio de Agricultura y Ganadería (MAG)</collab>
<article-title xml:lang=""><![CDATA[Reglamento de Límites Máximos Microbiológicos y de Residuos de Medicamentos y Contaminantes para los Productos y Subproductos de la Pesca y de Acuicultura Destinados al Consumo Humano]]></article-title>
<source><![CDATA[La Gaceta]]></source>
<year>2008</year>
<publisher-loc><![CDATA[San José, Costa Rica ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Morales-Ramírez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[La diversidad marina del Golfo Dulce, Pacífico Sur de Costa Rica: Amenazas a su conservación]]></article-title>
<source><![CDATA[Biocenosis]]></source>
<year>2011</year>
<volume>24</volume>
<numero>1-2</numero>
<issue>1-2</issue>
<page-range>9-20</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Moss]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water pollution by agriculture]]></article-title>
<source><![CDATA[Philosophical Transactions of the Royal Society]]></source>
<year>2008</year>
<numero>363</numero>
<issue>363</issue>
<page-range>659-66</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ramírez]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Bravo]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[de la Cruz]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Importación de plaguicidas en Costa Rica: Periodo 1980-2012]]></source>
<year>2014</year>
<publisher-loc><![CDATA[Heredia, Costa Rica ]]></publisher-loc>
<publisher-name><![CDATA[IRET-UNA]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ramírez-Muñoz]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Bravo-Durán]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Herrera-Ledezma]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Uso del herbicida glifosato en Costa Rica en el periodo 2007 a 2015]]></article-title>
<source><![CDATA[Uniciencia]]></source>
<year>2017</year>
<volume>31</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>59-72</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rincón-Alejos]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Ballestero-Sakson]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hidrografía y plumas estuarinas en Golfo Dulce, Pacífico Sur de Costa Rica]]></article-title>
<source><![CDATA[Revista Biología Tropical]]></source>
<year>2015</year>
<volume>63</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>161-81</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sarmento]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Chaves]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Retamosa]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruepert]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Jiménez]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Blanco]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Análisis descriptivo de las condiciones de conservación de un sitio de forrajeo de la tortuga verde del Pacífico (Chelonia mydas agassizii, Testudines: Chelonioidea) en el Golfo Dulce, Costa Rica; se toma como base el estado de salud de la tortuga y el hallazgo de plaguicidas en el ambiente]]></article-title>
<source><![CDATA[Rev. Ciencias Veterinarias]]></source>
<year>2015</year>
<volume>33</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>81-96</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sheaves]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Johnston]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Millera]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Nelson]]></surname>
<given-names><![CDATA[P.N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impact of oil palm development on the integrity of riparian vegetation of a tropical coastal landscape]]></article-title>
<source><![CDATA[Agriculture, Ecosystems and Environment]]></source>
<year>2018</year>
<numero>262</numero>
<issue>262</issue>
<page-range>1-10</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<collab>Sistema Nacional de Áreas de Conservación (SINAC)</collab>
<article-title xml:lang=""><![CDATA[Mapa de áreas silvestres protegidas, escala 1:50 000 en formato shape de ESRI.]]></article-title>
<source><![CDATA[Atlas de Costa Rica]]></source>
<year>2008</year>
<publisher-loc><![CDATA[San José, Costa Rica ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Smedes]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of total lipid using non-chlorinated solvents]]></article-title>
<source><![CDATA[Analyst]]></source>
<year>1999</year>
<volume>124</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>1711-8</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Solano]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Villalobos]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Aspectos fisiográficos aplicados a un bosquejo de regionalización geográfica climática de Costa Rica]]></article-title>
<source><![CDATA[Tópicos Meteorológicos]]></source>
<year>2001</year>
<volume>8</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>26-39</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Spongberg]]></surname>
<given-names><![CDATA[A. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Davis]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Organochlorinated pesticide contaminants in Golfo Dulce, Costa Rica]]></article-title>
<source><![CDATA[Revista Biología Tropical]]></source>
<year>1998</year>
<numero>46</numero>
<issue>46</issue>
<page-range>111-24</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Spongberg]]></surname>
<given-names><![CDATA[A. L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[PCB Contaminations in marine sediments from Golfo Dulce, Pacific coast of Costa Rica]]></article-title>
<source><![CDATA[Revista Biología. Tropical]]></source>
<year>2004</year>
<volume>52</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>23-32</page-range></nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Svendsen]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Rosland]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Myking]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Vargas]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Lizano]]></surname>
<given-names><![CDATA[O. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Alfaro]]></surname>
<given-names><![CDATA[E. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A physical-oceanographic study of Golfo Dulce, Costa Rica]]></article-title>
<source><![CDATA[Revista Biología Tropical]]></source>
<year>2006</year>
<volume>54</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>147-70</page-range></nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="">
<collab>University of Hertfordshire</collab>
<source><![CDATA[PPDB: Pesticide Properties DataBase]]></source>
<year>2018</year>
</nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wolff]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Hartmann H. J.]]></surname>
<given-names><![CDATA[Koch V.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A pilot trophic model for Golfo Dulce, a fjord-like tropical embayment, Costa Rica]]></article-title>
<source><![CDATA[Revista Biología Tropical]]></source>
<year>1996</year>
<volume>44</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>215-31</page-range></nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yáñez-Arancibia]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Taxonomía, ecología y estructura de las comunidades de peces en lagunas costeras con bocas efímeras del Pacífico de México]]></source>
<year>1978</year>
<publisher-loc><![CDATA[México D.F. México ]]></publisher-loc>
<publisher-name><![CDATA[Centro de Ciencias del Mar y Limnología-UNAM.]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
