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| Ibarra,José Tomás; Altamirano,Tomás; Gálvez,Nicolás; Rojas,Isabel; Laker,Jerry; Bonacic,Cristián. |
| Los estudios sobre el ensamble de aves de los bosques templados de Araucaria araucana son escasos. Como resultado, no se conocen ni los cambios estacionales del ensamble, ni el efecto de la profundidad de la nieve invernal sobre la diversidad, ni los elementos estructurales del bosque que serían relevantes para las aves. Entre 2008 y 2009 se estudió estacionalmente el ensamble de aves de estos bosques en la región de la Araucanía, sur de Chile. Mediante puntos de conteo y señuelos acústicos, fueron registradas un total de 29 especies. El ensamble mostró una estacionalidad marcada: la riqueza y la abundancia relativa de aves fueron máximas en verano y mínimas en invierno. La profundidad de nieve se relacionó de forma negativa con la riqueza y con la... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diversidad; Estructura del bosque; Gremios de uso de hábitat; Profundidad de nieve; Variaciones estacionales. |
| Ano: 2010 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2010000100004 |
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| Ibarra,José Tomás; Anderson,Christopher B; Altamirano,Tomás A; Rozzi,Ricardo; Bonacic,Cristián. |
| Sphagnum-dominated peat bogs that are strongly embedded within the southern temperate forest matrix are increasingly being used for agriculture. Nevertheless, little is known about their biodiversity. Moreover, the remote areas of southern Chile where peat bogs are found, such as the Cape Horn Biosphere Reserve (CHBR, 54-55ºS), where birds are the most diverse and best represented group of vertebrates, have not been well-investigated. With the aim to broaden this knowledge in the CHBR, we studied the diversity of the avian assemblage in peat bogs on Navarino Island. We compared the composition of avian species between wetlands with and without peat bogs to test if Sphagnum bogs represented a singular habitat for birds in this area. Furthermore, the 37 bird... |
| Tipo: Journal article |
Palavras-chave: Assemblage; Cape Horn Biosphere Reserve; Navarino Island; Patagonia; Sphagnum spp.; Wetlands. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000100003 |
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| Petitpas,Robert; Ibarra,José Tomás; Miranda,Marcelo; Bonacic,Cristián. |
| R. Petitpas, J.T. Ibarra, M. Miranda, and C. Bonacic. 2016. Spatial patterns in a 24-year period show a case of increase forest cover and decrease fragmentation in Andean temperate landscapes, Chile. Cien. Inv. Agr. 43(3):384-395. Changes in landscape pattern were studied in a temperate landscape of the La Araucanía Region, Chile. Using aerial photographs from 1983 and 2007, we created land use/land cover maps. We then quantified the changes in composition and configuration by using landscape metrics and an adjacency matrix. By 2007, the dominant land cover had changed from agriculture to native vegetation. Residential areas showed the largest relative increase (670%) and had significant adjacency with native vegetation. The native vegetation increased by... |
| Tipo: Journal article |
Palavras-chave: Fragmentation; Landscape change; Native vegetation recovery; Temperate forest. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300004 |
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| Ossa,Gonzalo; Ibarra,José Tomás; Barboza,Kathrin; Hernández,Felipe; Gálvez,Nicolás; Laker,Jerry; Bonacic,Cristián. |
| Echolocation is characteristic of bats of the suborder Microchiroptera. Though recent studies of echolocation calis in Latin America have generated significant advances in knowledge about distribution, habitat use and ecology of bats, the recording and analysis of bat calis is barely known in Chile. As a first step in studies on the ecology of the endemic Chilean myotis bat (Myotis chiloensis), we carried out morphometric measures and analyzed echolocation calis in a rural site near Pucón (39°15'S 17°W) in the Araucanía Region of southern Chile. During January 2009, we obtained 22 records from captured and 75 records from fiying individuals. The analysis of calis in searching phase showed that the terminal frequency for this species is 43.4 ±1.2 kHz, with... |
| Tipo: Journal article |
Palavras-chave: Myotis chiloensis; Echolocation; Morphometrics; Bats; Chiroptera; Temperate rainforest; Chile. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200013 |
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