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Papers by Andrew Burton

Revista Mexicana de Mastozoología (Nueva Epoca), 2006

Two adult male pumas were captured and monitored via radio-telemetry on the Colima volcanoes, wes... more Two adult male pumas were captured and monitored via radio-telemetry on the Colima volcanoes, western Mexico. One male occupied the western, north, and eastern slopes of the volcanic complex, whereas the other male was only located on the northeastern and eastern slopes of the volcanoes. Neither of the two males occupied the southern flank of Colima volcano. The two males were never found within close proximity to each other, although occasionally they visited the same localities. Both cats were most frequently located within humid pine-oak forest between 2,300 m and 2,900 m and were never recorded above 3,300 m. An estimated minimum density of 0.9 adult pumas/100 km 2 was obtained for the Colima volcanoes.

Anales del instituto de Biología, …, 2003

One adult male bobcat and one adult female bobcat (Lynx rufus) were captured near the summit of C... more One adult male bobcat and one adult female bobcat (Lynx rufus) were captured near the summit of Colima Volcano, western Mexico. The overall home range of the adult male was 560.5 ha, which encompassed the range of the adult female at 98.9 ha. Determination of core areas from cluster analysis helped elucidate habitat preferences. The adult male centered activity on a large rocky lava flow field produced during the 1869 flank eruption of the parasitic vent, El Volcancito. A second core area was identified as the 1880 lava flow on the northern flank of the volcano, which was favored by the adult female. The female bobcat also centered activity in grassland on the western slopes of the volcano between 3100 and 3200 m. Bobcat preference for the lava flows and grassland was related to their preferred mode of hunting, involving stalking prey and lying in wait, requiring cover and vantage points, and the distribution of small mammals on the volcano. Small mammals were sampled within tree and grassland habitats on the volcano using a replicated trapping design. Abundance of small mammals was greater in grassland as opposed to wooded habitats. Seed production can be expected to be greater in grassland habitats favoring high densities of small mammals. The high abundance of the bunchgrass Calamagrostis tolucensis, along with herbs, in grassland habitats on the volcano should provide sufficient vegetative material for species such as Microtus mexicanus.

One adult male bobcat and one adult female bobcat (Lynx rufus) were captured near the summit of C... more One adult male bobcat and one adult female bobcat (Lynx rufus) were captured near the summit of Colima Volcano, western Mexico. The overall home range of the adult male was 560.5 ha, which encompassed the range of the adult female at 98.9 ha. Determination of core areas from cluster analysis helped elucidate habitat preferences. The adult male centered activity on a large rocky lava flow field produced during the 1869 flank eruption of the parasitic vent, El Volcancito. A second core area was identified as the 1880 lava flow on the northern flank of the volcano, which was favored by the adult female. The female bobcat also centered activity in grassland on the western slopes of the volcano between 3100 and 3200 m. Bobcat preference for the lava flows and grassland was related to their preferred mode of hunting, involving stalking prey and lying in wait, requiring cover and vantage points, and the distribution of small mammals on the volcano. Small mammals were sampled within tree and grassland habitats on the volcano using a replicated trapping design. Abundance of small mammals was greater in grassland as opposed to wooded habitats. Seed production can be expected to be greater in grassland habitats favoring high densities of small mammals. The high abundance of the bunchgrass Calamagrostis tolucensis, along with herbs, in grassland habitats on the volcano should provide sufficient vegetative material for species such as Microtus mexicanus.

Revista Mexicana De Biodiversidad, May 10, 2009

Australian Forestry, 2000

Revista Mexicana de Biodiversidad

Resumen. Se presenta un registro del águila elegante (Spizaetus ornatus) en un bosque de encino-p... more Resumen. Se presenta un registro del águila elegante (Spizaetus ornatus) en un bosque de encino-pino de la Reserva de la Biosfera Sierra de Manantlán, Jalisco-Colima, correspondiente a un individuo de 2 a 3 años de edad. Este registro es signifi cativo ante la escasez de registros de esta especie en el occidente de México, los cuales corresponden a localidades en los estados de Nayarit (1) Colima (3), Jalisco (1) y Guerrero (1). Se considera que el águila elegante está en peligro de extinción en México (NOM-059-ECOL-2001); su presencia en esta área natural protegida da aliento para su conservación. Palabras clave: águila elegante, Spizaetus ornatus, distribución, oeste de México.

REVISTA MEXICANA DE BIODIVERSIDAD

An immature Ornate Hawk–Eagle (Spizaetus ornatus) was observed and photographed while perched in ... more An immature Ornate Hawk–Eagle (Spizaetus ornatus) was observed and photographed while perched in pine–oak forest in the Sierra de Manantlán Biosphere Reserve, Jalisco–Colima, Mexico. From plumage characteristics we believe the eagle to be 2–3 years old. This record is significant due to the paucity of records for this species in Western Mexico: Nayarit (1) Colima (3), Jalisco (1) and Guerrero (1). The Ornate Hawk–Eagle is considered as a threatened species in Mexico, and this record from a natural protected area brings hope for its conservation.

Revista mexicana de …, 2009

Revista Mexicana de Mastozoología (Nueva Epoca), 2006

Two adult male pumas were captured and monitored via radio-telemetry on the Colima volcanoes, wes... more Two adult male pumas were captured and monitored via radio-telemetry on the Colima volcanoes, western Mexico. One male occupied the western, north, and eastern slopes of the volcanic complex, whereas the other male was only located on the northeastern and eastern slopes of the volcanoes. Neither of the two males occupied the southern flank of Colima volcano. The two males were never found within close proximity to each other, although occasionally they visited the same localities. Both cats were most frequently located within humid pine-oak forest between 2,300 m and 2,900 m and were never recorded above 3,300 m. An estimated minimum density of 0.9 adult pumas/100 km 2 was obtained for the Colima volcanoes.

Anales del instituto de Biología, …, 2003

One adult male bobcat and one adult female bobcat (Lynx rufus) were captured near the summit of C... more One adult male bobcat and one adult female bobcat (Lynx rufus) were captured near the summit of Colima Volcano, western Mexico. The overall home range of the adult male was 560.5 ha, which encompassed the range of the adult female at 98.9 ha. Determination of core areas from cluster analysis helped elucidate habitat preferences. The adult male centered activity on a large rocky lava flow field produced during the 1869 flank eruption of the parasitic vent, El Volcancito. A second core area was identified as the 1880 lava flow on the northern flank of the volcano, which was favored by the adult female. The female bobcat also centered activity in grassland on the western slopes of the volcano between 3100 and 3200 m. Bobcat preference for the lava flows and grassland was related to their preferred mode of hunting, involving stalking prey and lying in wait, requiring cover and vantage points, and the distribution of small mammals on the volcano. Small mammals were sampled within tree and grassland habitats on the volcano using a replicated trapping design. Abundance of small mammals was greater in grassland as opposed to wooded habitats. Seed production can be expected to be greater in grassland habitats favoring high densities of small mammals. The high abundance of the bunchgrass Calamagrostis tolucensis, along with herbs, in grassland habitats on the volcano should provide sufficient vegetative material for species such as Microtus mexicanus.

One adult male bobcat and one adult female bobcat (Lynx rufus) were captured near the summit of C... more One adult male bobcat and one adult female bobcat (Lynx rufus) were captured near the summit of Colima Volcano, western Mexico. The overall home range of the adult male was 560.5 ha, which encompassed the range of the adult female at 98.9 ha. Determination of core areas from cluster analysis helped elucidate habitat preferences. The adult male centered activity on a large rocky lava flow field produced during the 1869 flank eruption of the parasitic vent, El Volcancito. A second core area was identified as the 1880 lava flow on the northern flank of the volcano, which was favored by the adult female. The female bobcat also centered activity in grassland on the western slopes of the volcano between 3100 and 3200 m. Bobcat preference for the lava flows and grassland was related to their preferred mode of hunting, involving stalking prey and lying in wait, requiring cover and vantage points, and the distribution of small mammals on the volcano. Small mammals were sampled within tree and grassland habitats on the volcano using a replicated trapping design. Abundance of small mammals was greater in grassland as opposed to wooded habitats. Seed production can be expected to be greater in grassland habitats favoring high densities of small mammals. The high abundance of the bunchgrass Calamagrostis tolucensis, along with herbs, in grassland habitats on the volcano should provide sufficient vegetative material for species such as Microtus mexicanus.

Revista Mexicana De Biodiversidad, May 10, 2009

Australian Forestry, 2000

Revista Mexicana de Biodiversidad

Resumen. Se presenta un registro del águila elegante (Spizaetus ornatus) en un bosque de encino-p... more Resumen. Se presenta un registro del águila elegante (Spizaetus ornatus) en un bosque de encino-pino de la Reserva de la Biosfera Sierra de Manantlán, Jalisco-Colima, correspondiente a un individuo de 2 a 3 años de edad. Este registro es signifi cativo ante la escasez de registros de esta especie en el occidente de México, los cuales corresponden a localidades en los estados de Nayarit (1) Colima (3), Jalisco (1) y Guerrero (1). Se considera que el águila elegante está en peligro de extinción en México (NOM-059-ECOL-2001); su presencia en esta área natural protegida da aliento para su conservación. Palabras clave: águila elegante, Spizaetus ornatus, distribución, oeste de México.

REVISTA MEXICANA DE BIODIVERSIDAD

An immature Ornate Hawk–Eagle (Spizaetus ornatus) was observed and photographed while perched in ... more An immature Ornate Hawk–Eagle (Spizaetus ornatus) was observed and photographed while perched in pine–oak forest in the Sierra de Manantlán Biosphere Reserve, Jalisco–Colima, Mexico. From plumage characteristics we believe the eagle to be 2–3 years old. This record is significant due to the paucity of records for this species in Western Mexico: Nayarit (1) Colima (3), Jalisco (1) and Guerrero (1). The Ornate Hawk–Eagle is considered as a threatened species in Mexico, and this record from a natural protected area brings hope for its conservation.

Revista mexicana de …, 2009