A considerable number of bird species depend on tree cavities availability for nesting in tempera... more A considerable number of bird species depend on tree cavities availability for nesting in temperate and tropical forests in Mexico. Tree cavity availability is reduced in heavily managed forests, making cavity nesting species particularly vulnerable to the high rates of forest loss and degradation that occur every day in the remaining wilderness areas of the country. We analyzed information about nesting behavior, distribution, and conservation status of resident landbird avifauna from 35 important and protected bird areas of Mexico. The main intention was to determine the proportion of resident bird species that nest in tree cavities and are more sensitive to intensive forest management practices. Our results revealed that 17% (112 species) of the resident landbird avifauna need tree cavities for nesting. Cavity nesters represented a higher proportion of endangered and threatened species than non-cavity nesters. The families Strigidae and Psittacidae represented the highest number ...
La conservación de los mamíferos en el centro de México es de vital importancia debido al papel f... more La conservación de los mamíferos en el centro de México es de vital importancia debido al papel funcional que realizan en los ecosistemas. El objetivo de este estudio es determinar la riqueza y abundancia de los mamíferos medianos y grandes en diferentes tipos de vegetación del municipio de Victoria, Guanajuato. Entre el 2007 y 2013, cinco localidades del municipio fueron muestreadas mediante la colocación de cámaras trampa sobre senderos utilizados por la fauna. Con un esfuerzo de muestreo de 9803 días-trampa registramos 18 especies de mamíferos medianos y grandes pertenecientes a seis órdenes, destacando la presencia de tres especies de felinos (lince, puma y jaguarundi). El bosque de pino-encino concentró la mayor riqueza con 17 especies, mientras que en el matorral submontano se registraron 16 especies. Estos resultados aumentan nuestra comprensión sobre los patrones regionales de riqueza y distribución de los mamíferos en zonas del centro de México, y son particularmente releva...
ResumenEn el estado de Guanajuato se confirmó la presencia de tlalcoyote (Taxidea taxus) mediante... more ResumenEn el estado de Guanajuato se confirmó la presencia de tlalcoyote (Taxidea taxus) mediante fototrampeo. Estos registros se localizan en la zona de influencia de la Reserva de la Biosfera Sierra Gorda de Guanajuato (RBSGG) y complementan ellistado de mamíferos reportados en la reserva. Los registros más cercanos de tlalcoyote se localizan a 90 km al noroeste en el estado de San Luis Potosíy a 105 km al suroeste del registro colectado en Silao, Guanajuato por Alfredo Dugès en 1874. Es fundamental incluir al tlalcoyote dentro del plan de manejo de la rbsgg con el fin de implementar acciones para su monitoreo y conservación a largo plazo, así como confirmar si en la región puede existir una población establecida y que no se trate de individuos errantes.Palabras clave: cámaras trampa, matorral xerófilo, mustelidae, Sierra Gorda, tejón norteamericano.In Guanajuato state is confirmed the presence of tlalcoyote (Taxidea taxus) by camera trapping. These records are located in the infl...
The Wild mammals have been studied in Michoacán since the eighteenth century. However, the inform... more The Wild mammals have been studied in Michoacán since the eighteenth century. However, the information available to the state was scattered. Therefore the goal is to this analysis is to provide an update on the taxonomic richness of terrestrial wild mammals in the state of Michoacán synthesis. There are records of 161 species of 9 orders, 25 families and 94 genera, representing 32% of the species in Mexico. The order with the highest number of species is Chiroptera with 74 species representing 53% of the species of order in Mexico. Despite the central location of Michoacán in the country, and being a sampled by numerous researchers state, there is still lack of information to remote regions, and in some species. For example, the jaguar is no information to 2010, despite being the largest feline in the country. Another limitation to the proper interpretation of mammals state aspect is the age of many records as the most complete studies at regional level, so that the current situatio...
... more nest sites but also more substantial seed crops, the primary food for Thick-billed Parro... more ... more nest sites but also more substantial seed crops, the primary food for Thick-billed Parrots and other wildlife (Benkman 1993 ... We appreciate the help and advice of Noel Snyder, Robert B. Hamilton, Fernando Villaseñor, Claudia Macias, Katherine Renton, Javier Cruz, Diana ...
Abstract We report seven new records of the threatened Mexican hairy dwarf porcupine Sphiggurus m... more Abstract We report seven new records of the threatened Mexican hairy dwarf porcupine Sphiggurus mexicanus (formerly Coendou mexicanus) in southwestern Michoacán, Mexico. These records extend northwardly the known distribution of S. mexicanus along the ...
Parrot populations are being increasingly pressured to occupy modified or fragmented landscapes, ... more Parrot populations are being increasingly pressured to occupy modified or fragmented landscapes, yet little is known of the habitat requirements of most species, particularly with regard to the effects on breeding habitat. We evaluated nesting habitat of the lilac-crowned parrot ...
Abstract Ecological niche models provide useful predictions of species distributions, but may fai... more Abstract Ecological niche models provide useful predictions of species distributions, but may fail to detect reductions in distribution due to factors other than habitat loss, such as hunting or trade. From 2001 to 2009, we conducted field-surveys along the Mexican Pacific coast ...
A considerable number of bird species depend on tree cavities availability for nesting in tempera... more A considerable number of bird species depend on tree cavities availability for nesting in temperate and tropical forests in Mexico. Tree cavity availability is reduced in heavily managed forests, making cavity nesting species particularly vulnerable to the high rates of forest loss and degradation that occur every day in the remaining wilderness areas of the country. We analyzed information about nesting behavior, distribution, and conservation status of resident landbird avifauna from 35 important and protected bird areas of Mexico. The main intention was to determine the proportion of resident bird species that nest in tree cavities and are more sensitive to intensive forest management practices. Our results revealed that 17% (112 species) of the resident landbird avifauna need tree cavities for nesting. Cavity nesters represented a higher proportion of endangered and threatened species than non-cavity nesters. The families Strigidae and Psittacidae represented the highest number ...
La conservación de los mamíferos en el centro de México es de vital importancia debido al papel f... more La conservación de los mamíferos en el centro de México es de vital importancia debido al papel funcional que realizan en los ecosistemas. El objetivo de este estudio es determinar la riqueza y abundancia de los mamíferos medianos y grandes en diferentes tipos de vegetación del municipio de Victoria, Guanajuato. Entre el 2007 y 2013, cinco localidades del municipio fueron muestreadas mediante la colocación de cámaras trampa sobre senderos utilizados por la fauna. Con un esfuerzo de muestreo de 9803 días-trampa registramos 18 especies de mamíferos medianos y grandes pertenecientes a seis órdenes, destacando la presencia de tres especies de felinos (lince, puma y jaguarundi). El bosque de pino-encino concentró la mayor riqueza con 17 especies, mientras que en el matorral submontano se registraron 16 especies. Estos resultados aumentan nuestra comprensión sobre los patrones regionales de riqueza y distribución de los mamíferos en zonas del centro de México, y son particularmente releva...
ResumenEn el estado de Guanajuato se confirmó la presencia de tlalcoyote (Taxidea taxus) mediante... more ResumenEn el estado de Guanajuato se confirmó la presencia de tlalcoyote (Taxidea taxus) mediante fototrampeo. Estos registros se localizan en la zona de influencia de la Reserva de la Biosfera Sierra Gorda de Guanajuato (RBSGG) y complementan ellistado de mamíferos reportados en la reserva. Los registros más cercanos de tlalcoyote se localizan a 90 km al noroeste en el estado de San Luis Potosíy a 105 km al suroeste del registro colectado en Silao, Guanajuato por Alfredo Dugès en 1874. Es fundamental incluir al tlalcoyote dentro del plan de manejo de la rbsgg con el fin de implementar acciones para su monitoreo y conservación a largo plazo, así como confirmar si en la región puede existir una población establecida y que no se trate de individuos errantes.Palabras clave: cámaras trampa, matorral xerófilo, mustelidae, Sierra Gorda, tejón norteamericano.In Guanajuato state is confirmed the presence of tlalcoyote (Taxidea taxus) by camera trapping. These records are located in the infl...
The Wild mammals have been studied in Michoacán since the eighteenth century. However, the inform... more The Wild mammals have been studied in Michoacán since the eighteenth century. However, the information available to the state was scattered. Therefore the goal is to this analysis is to provide an update on the taxonomic richness of terrestrial wild mammals in the state of Michoacán synthesis. There are records of 161 species of 9 orders, 25 families and 94 genera, representing 32% of the species in Mexico. The order with the highest number of species is Chiroptera with 74 species representing 53% of the species of order in Mexico. Despite the central location of Michoacán in the country, and being a sampled by numerous researchers state, there is still lack of information to remote regions, and in some species. For example, the jaguar is no information to 2010, despite being the largest feline in the country. Another limitation to the proper interpretation of mammals state aspect is the age of many records as the most complete studies at regional level, so that the current situatio...
... more nest sites but also more substantial seed crops, the primary food for Thick-billed Parro... more ... more nest sites but also more substantial seed crops, the primary food for Thick-billed Parrots and other wildlife (Benkman 1993 ... We appreciate the help and advice of Noel Snyder, Robert B. Hamilton, Fernando Villaseñor, Claudia Macias, Katherine Renton, Javier Cruz, Diana ...
Abstract We report seven new records of the threatened Mexican hairy dwarf porcupine Sphiggurus m... more Abstract We report seven new records of the threatened Mexican hairy dwarf porcupine Sphiggurus mexicanus (formerly Coendou mexicanus) in southwestern Michoacán, Mexico. These records extend northwardly the known distribution of S. mexicanus along the ...
Parrot populations are being increasingly pressured to occupy modified or fragmented landscapes, ... more Parrot populations are being increasingly pressured to occupy modified or fragmented landscapes, yet little is known of the habitat requirements of most species, particularly with regard to the effects on breeding habitat. We evaluated nesting habitat of the lilac-crowned parrot ...
Abstract Ecological niche models provide useful predictions of species distributions, but may fai... more Abstract Ecological niche models provide useful predictions of species distributions, but may fail to detect reductions in distribution due to factors other than habitat loss, such as hunting or trade. From 2001 to 2009, we conducted field-surveys along the Mexican Pacific coast ...
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