<?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>0065-1737</journal-id>
<journal-title><![CDATA[Acta zoológica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Zool. Mex]]></abbrev-journal-title>
<issn>0065-1737</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0065-17372019000100124</article-id>
<article-id pub-id-type="doi">10.21829/azm.2019.3502093</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Abundancia y distribución espacio temporal del Playerito occidental Calidris mauri (Charadriiformes: Scolopacidae) invernante en Marismas Nacionales, Nayarit-Sinaloa, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Abundance and spatio-temporal distribution of the western sandpiper Calidris mauri (Charadriiformes: Scolopacidae) in marismas nacionales, Nayarit-Sinaloa, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Sarabia]]></surname>
<given-names><![CDATA[Paulina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carmona]]></surname>
<given-names><![CDATA[Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendoza]]></surname>
<given-names><![CDATA[Luis F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Baja California Sur Departamento Académico de Ciencias Marinas y Costeras ]]></institution>
<addr-line><![CDATA[La Paz Baja California Sur]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Pronatura Noroeste A.C.  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>35</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0065-17372019000100124&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0065-17372019000100124&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0065-17372019000100124&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El Playerito occidental (Calidris mauri) es el ave playera más abundante en el corredor migratorio del Pacífico. Esta especie ha sido estudiada en diferentes puntos de la Península de Baja California y la costa de Sinaloa. Sin embargo, no se han realizado trabajos en sitios más sureños, como Marismas Nacionales (MN). En el estudio presente determinamos la distribución espacio temporal de la especie en MN (septiembre 2013-marzo 2014), mediante conteos mensuales. MN fue utilizada por al menos 30,000 individuos, el sitio más relevante fue laguna El Chumbeño (57% de registros totales). Las aves arribaron a MN en octubre, tres meses después que en otros sitios del noroeste mexicano, esto en relación con el elevado nivel de agua ocasionado por las lluvias inmediatas anteriores. Se presentó una relación positiva entre la abundancia de la especie de interés en los sitios con la superficie húmeda, y negativa con el área cubierta por vegetación. Las abundancias mayores se presentaron de octubre a enero y descendieron a partir de febrero, dada la migración primaveral y la desecación de sitios de alimentación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Western Sandpiper (Calidris mauri) is the most abundant shorebird along the Pacific flyway. This shorebird has been studied in different points of the Baja California Peninsula and the coast of Sinaloa. However, no studies have been conducted in southern sites, like Marismas Nacionales (MN). In the present study we determinate the temporal and spacial distribution of the specie in MN in September 2013 to March 2014. We conducted monthly counts and determinate that MN was used for at least 30,000 individuals, and El Chumbeño was the most relevant site (57% of total registers). Western Sandpiper arrived to MN mainly in October, and after three months compare to other sites along the Mexican western region, this related to the high level caused by the previous immediate rains. A positive relationship was presented between abundance of the specie with wet surface at sites and negative with vegetation area covered. The highest abundances were present between October and January, and descended in February, attributed to the beginning of spring migration and the desiccation of feeding sites.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Calidris mauri]]></kwd>
<kwd lng="es"><![CDATA[aves playeras migratorias]]></kwd>
<kwd lng="es"><![CDATA[invernación]]></kwd>
<kwd lng="es"><![CDATA[Nayarit]]></kwd>
<kwd lng="en"><![CDATA[Calidris mauri]]></kwd>
<kwd lng="en"><![CDATA[migratory shorebirds]]></kwd>
<kwd lng="en"><![CDATA[wintering]]></kwd>
<kwd lng="en"><![CDATA[Nayarit]]></kwd>
</kwd-group>
</article-meta>
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