<?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>2007-3364</journal-id>
<journal-title><![CDATA[Therya]]></journal-title>
<abbrev-journal-title><![CDATA[Therya]]></abbrev-journal-title>
<issn>2007-3364</issn>
<publisher>
<publisher-name><![CDATA[Asociación Mexicana de Mastozoología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-33642018000300219</article-id>
<article-id pub-id-type="doi">10.12933/therya-18-571</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Potential distribution model of Ovis canadensis in northern Baja California, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Mondragón]]></surname>
<given-names><![CDATA[Enrique de Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero-Figueroa]]></surname>
<given-names><![CDATA[Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Aranda]]></surname>
<given-names><![CDATA[Mario Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lozano-Cavazos]]></surname>
<given-names><![CDATA[Eloy Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdez]]></surname>
<given-names><![CDATA[Raúl]]></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[Ensenada Baja California]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,New Mexico State University  ]]></institution>
<addr-line><![CDATA[Las Cruces New Mexico]]></addr-line>
<country>USA</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<volume>9</volume>
<numero>3</numero>
<fpage>219</fpage>
<lpage>226</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-33642018000300219&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-33642018000300219&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-33642018000300219&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The bighorn sheep is an iconic species in Baja California, being a key element for environmental conservation across its distribution range due to the huge dimensions of its habitat. In this regard, priority areas should be identified to propose feasible management practices. In this context, ecological niche models are essential because they are important methodological tools that indicate the suitability of the habitat for proper species development, based on field observations and multiple environmental variables as occupancy predictors. This investigation aims to identify the potential distribution range of the bighorn sheep in Sierra de Juarez using an ecological niche model. Indirect signs of the presence of bighorn sheep were sampled in Sierra de Juárez from January to June 2016 in order to gather evidence of the species, along with records from an aerial survey carried out in 2012. The ecological niche model was constructed applying the maximum-entropy algorithm assisted with the Maxent software. Ruggedness, orientation, slope, normalized difference vegetation index (NDVI), type of vegetation, and type of weather were used as predictive variables. In Sierra de Juarez, bighorn sheep inhabit an area of 49,844 ha with the following characteristics: climates ranging from very arid semi-warm [BWh(x&#8217;)] to very arid temperate [BWk(x&#8217;) and BWks]; natural vegetation comprising gallery and palm-tree patches; NDVI of 0.05 to 0.07; orientation of 0 to160°; slope of 0 to 65 %; and ruggedness of 35 to160 m (Figure 4). NDVI, vegetation type and ruggedness were the variables with the greatest contribution to the ecological niche model (Table 1). Bighorn sheep are distributed primarily in the northern and central regions of Sierra de Juárez (Figure 2). According to the niche model, these areas have environmental conditions that provide shelter and resources for this species. Therefore, it is hereby proposed to organize the local landowners to implement actions to protect the bighorn sheep habitat to warrant the conservation of this iconic species and its environment in the region studied.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El borrego cimarrón es una especie emblemática la cual representa en sus zonas de distribución un elemento clave para la conservación de su entorno, que debido a las extensas dimensiones de su hábitat requiere de la ubicación de regiones prioritarias dentro de este, con el objetivo de proponer estrategias de manejo factibles. Es en este contexto que los modelos de nicho ecológico cobran importancia al ser herramientas metodológicas que indican la idoneidad del hábitat para el establecimiento de una especie, calculada a partir de observaciones de campo y una serie de variables ambientales que actúan como predictores. El objetivo de la presente investigación es identificar la distribución potencial para el borrego cimarrón en Sierra Juárez, empleando un modelo de nicho ecológico. Se realizó un rastreo de evidencias de la presencia del borrego cimarrón en Sierra Juárez de enero a junio de 2016, para generar una base de datos de registros geográficos de la especie, la cual se complementó con los registros obtenidos de un censo aéreo efectuado en el sitio en 2012. El modelo de nicho ecologico se generó mediante el algoritmo de máxima entropía ejecutado por el programa Maxent empleando como variables predictivas la escabrosidad, la orientación, la pendiente, el índice de vegetación de diferencia normalizada (NDVI), el tipo de vegetación y el tipo de clima. El borrego cimarrón en Sierra Juárez se distribuye en un área de 49,844 ha (Figura 2), donde su presencia es más probable en sitios con: climas muy árido semicálido [BWh(x&#8217;)], muy árido templado [BWk(x&#8217;)] y muy árido templado [BWks]; vegetación de tipo galería y palmar natural; NDVI de 0.05 a 0.07; orientación de 0 a 160 °; pendiente de 0 a 65 %; y escabrosidad de 35 a 160 m (Figura 4). y Siendo el NDVI, el tipo de vegetación y la escabrosidad, las variables de mayor contribución para la creación del modelo de nicho ecológico (Tabla 1). Potencialmente el borrego cimarrón se distribuye en las regiones del norte y centro de Sierra Juárez (Figura 2), ya que de acuerdo con el modelo de nicho estas zonas presentan condiciones ambientales que le brindan cobertura y recursos a la especie. Por lo que se propone organizar a los propietarios de estas regiones prioritarias para llevar a cabo acciones de protección y mantenimiento del hábitat, que aseguren la conservación de esta emblemática especie y su entorno.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[desert bighorn sheep]]></kwd>
<kwd lng="en"><![CDATA[ecological niche model]]></kwd>
<kwd lng="en"><![CDATA[potential distribution model]]></kwd>
<kwd lng="en"><![CDATA[Sierra de Juárez]]></kwd>
<kwd lng="en"><![CDATA[wild sheep]]></kwd>
</kwd-group>
</article-meta>
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