<?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>S0065-17372026000100104</article-id>
<article-id pub-id-type="doi">10.21829/azm.2026.4212797</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Diversidad y abundancia estacional de rapaces a través de los pisos bioclimáticos de la Sierra de San Pedro Mártir, Baja California, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Seasonal richness and abundance of raptors across the bioclimatic belts of the Sierra de San Pedro Mártir, Baja California, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[León-Girón]]></surname>
<given-names><![CDATA[Gonzalo De]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zerega-Contreras]]></surname>
<given-names><![CDATA[Mariana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Campos]]></surname>
<given-names><![CDATA[Gorgonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Delgadillo-Rodríguez]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Baja California Facultad de Ciencias ]]></institution>
<addr-line><![CDATA[ Baja California]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2026</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2026</year>
</pub-date>
<volume>42</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0065-17372026000100104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0065-17372026000100104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0065-17372026000100104&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La diversidad y abundancia de aves rapaces en un gradiente altitudinal en la península de Baja California ha sido nulamente caracterizada sobre la base de muestreos cuantitativos a través de diferentes pisos bioclimáticos y estaciones del año. En este estudio se analizó la variación estacional de la diversidad y abundancia de aves rapaces a través de los pisos bioclimáticos en un intervalo de 125 a 2761 m en la Sierra San Pedro Mártir, Baja California, México, durante octubre 2017 a julio de 2018. El objetivo fue probar la regla ecogeográfica que la diversidad y abundancia de especies están inversamente relacionadas con el factor altitud. En total 15 especies fueron registradas, la mayoría de ellas (11) en el piso Inframediterráneo (&lt;700 m snm) y un menor número en los pisos Mesomediterráneo (1200-2000 m snm) y Supramediterráneo (&gt;2000 m snm) con cuatro y cinco especies, respectivamente. Estacionalmente, el mayor número de especies identificadas fue en primavera (10) y el menor número de especies en otoño (6). Dos especies, Cathartes aura (Linnaeus, 1758) y Buteo jamaicensis (Gmelin, 1788) fueron las rapaces más abundantes registradas en el sitio de estudio a través de todas las estaciones climáticas y para el piso bioclimático Inframediterráneo. Verano fue caracterizado por la dominancia de especies residentes permanentes, mientras que en el resto de las estaciones por la adición de visitantes estacionales u ocasionales. La diversidad y abundancia de rapaces observada revelaron una relación inversa con la altitud y una relación directa con la temperatura ambiental.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The diversity and abundance of raptors along an altitudinal gradient in the Baja California peninsula have not been characterized using quantitative sampling across different bioclimatic belts or seasons. This study assessed the seasonal variation in raptor diversity and abundance of raptors across bioclimatic belts within an altitudinal range of 125 to 2761 m asl in the Sierra de San Pedro Mártir, Baja California, Mexico, from October 2017 to July 2018. The aim was to test the ecogeographical rule that species diversity and abundance are inversely related to elevation. Fifteen species were recorded, with most (11) found in the Infra-mediterranean belt (&lt;700 m asl) and fewer in the Meso-mediterranean (1200-2000 m asl) and Supra-mediterranean (&gt;2000 m asl) belts, with four and five species, respectively. Seasonally, the highest number of species was identified in spring (10) and the lowest in autumn (6). Two species, Cathartes aura and Buteo jamaicensis, were the most abundant raptors recorded at the study site across all seasons and in the Infra-mediterranean belt. Summer was characterized by the dominance of permanent residents, while the other seasons included seasonal or occasional visitors. The observed diversity and abundance of raptors showed an inverse relationship with altitude and a direct relationship with air temperature.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[altitudinal distribution]]></kwd>
<kwd lng="en"><![CDATA[diversity]]></kwd>
<kwd lng="en"><![CDATA[northwestern Baja California]]></kwd>
<kwd lng="en"><![CDATA[seasonality]]></kwd>
<kwd lng="es"><![CDATA[distribución altitudinal]]></kwd>
<kwd lng="es"><![CDATA[diversidad]]></kwd>
<kwd lng="es"><![CDATA[noroeste Baja California]]></kwd>
<kwd lng="es"><![CDATA[estacionalidad]]></kwd>
</kwd-group>
</article-meta>
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