<?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>2007-1132</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias forestales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. de cienc. forestales]]></abbrev-journal-title>
<issn>2007-1132</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-11322016000200069</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estructura poblacional de Ovis canadensis weemsi Goldman, 1937 en la isla El Carmen, Baja California Sur]]></article-title>
<article-title xml:lang="en"><![CDATA[Population structure of Ovis canadensis weemsi Goldman, 1937 in the El Carmen Island, Southern Baja California]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Román-Valdez]]></surname>
<given-names><![CDATA[Raúl]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Saldívar]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cantú-Ayala]]></surname>
<given-names><![CDATA[Cesar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kawas-Garza]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Uvalle-Sauceda]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Marmolejo-Moncivais]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Estrada Castillón]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,UANL Facultad de Ciencias Forestales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,UANL Facultad de Agronomía ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2016</year>
</pub-date>
<volume>7</volume>
<numero>34</numero>
<fpage>69</fpage>
<lpage>84</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322016000200069&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322016000200069&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322016000200069&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El borrego cimarrón del desierto (Ovis canadensis) es una especie con una distribución espacial restringida, debido a que requiere de características específicas de hábitat que le provean agua, alimento, cobertura y espacio; factores determinantes en la selección de sitios de distribución. O. c. weemsi tiene el estatus de especie Sujeta a Protección Especial y, actualmente, solo se ha registrado en algunas zonas de Sonora, Baja California y Baja California Sur. La Isla El Carmen, Baja California Sur, pertenece al Parque Marino Nacional Bahía de Loreto, por su ubicación geográfica, condiciones climáticas, escasez de agua, tipos de vegetación y topoformas es un sitio de enorme interés para realizar investigaciones en ecosistemas de zonas áridas. Se determinó la distribución del borrego cimarrón (O c. weemsi) introducido en la Isla, mediante el método de conteo por franjas, modificado por Hayne; y el registro a través de avistamiento de ejemplares en los aguajes, para reforzar las observaciones de la estructura poblacional de la especie. Asimismo, se registraron la inclinación del terreno, época del año, distribución de aguajes y presencia de comederos para determinar su efecto en la estructura de la población. Se estimó una densidad de 4.96 borregos km-2, con un total de 1 151 observaciones. Se calcularon 616 individuos en una superficie de 12 428 ha con matorral desértico sarcocaule.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: In Southern Baja California the populations of desert bighorn sheep (Ovis canadensis) have diminished, mainly as a result of the fragmentation of their habitat and of furtive hunting. It is a species with a restricted spatial distribution because it requires its habitat to have certain specific characteristics so as to be provided with water, food, cover and space-all of which are determinants for the selection of distribution facts. O. c weemsi ha the status of Species &#8220;Subject to Special Protection&#8221;, and currently only registered in some areas of Sonora, Baja California and Baja California Sur. The El Carmen island belongs to the Parque Marino Nacional Bahía de Loreto which, due to its geographic location, climatic conditions, water scarcity, types of vegetation and topography, is an extremely interesting site in which to carry out research in arid ecosystems. The distribution of the bighorn sheep introduced into the island was determined using the strip count method modified by Hayne and through records of specimen sightings at the drinking troughs, as a way of reinforcing the observations on the population structure of the species. Furthermore, the data on the land slope, time of the year, distribution of the drinking troughs and presence of feeding troughs were collected in order to determine their effect on the population structure. The results indicate a population density of 4.96 sheep km-2, with a total of 1 151 observations. The total number of individuals was estimated to be 616, on a surface of 12 428 ha with sarcocaulescent desert shrubs.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Borrego cimarrón]]></kwd>
<kwd lng="es"><![CDATA[conteo por franjas]]></kwd>
<kwd lng="es"><![CDATA[densidad poblacional]]></kwd>
<kwd lng="es"><![CDATA[estructura poblacional]]></kwd>
<kwd lng="es"><![CDATA[método de Hayne]]></kwd>
<kwd lng="es"><![CDATA[Ovis canadensis weemsi Goldman]]></kwd>
<kwd lng="es"><![CDATA[1937]]></kwd>
<kwd lng="en"><![CDATA[Bighorn sheep]]></kwd>
<kwd lng="en"><![CDATA[strip count]]></kwd>
<kwd lng="en"><![CDATA[population density]]></kwd>
<kwd lng="en"><![CDATA[population structure]]></kwd>
<kwd lng="en"><![CDATA[Hayne&#8217;s method]]></kwd>
<kwd lng="en"><![CDATA[Ovis canadensis weemsi Goldman]]></kwd>
<kwd lng="en"><![CDATA[1937]]></kwd>
</kwd-group>
</article-meta>
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