Browsing by Author "Altamirano Oyarzún, Tomás Alberto"
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- ItemBreeding strategies of open-cup-nesting birds in sub-Antarctic forests of Navarino Island, Chile(2019) Altamirano Oyarzún, Tomás Alberto; Ibarra Eliessetch, José Tomás; Jara, Rocío Fernanda; Crego, Ramiro Daniel; Arellano, Francisco Javier; Rozzi, Ricardo; Jiménez, Jaime EnriqueAbstract Background There is limited knowledge about the breeding strategies of birds inhabiting in South American temperate forests. This is particularly true for open-cup forest passerines breeding at high latitudes (> 42°). To better understand the ecology of these species, in this study we described and compared the breeding strategies (i.e., nest dimensions, nest height from the ground, egg laying rhythm, clutch size, length of the developmental periods, breeding phenology, and diversity of nesting substrate) of five passerine birds that inhabit sub-Antarctic ecosystems. Methods During three breeding seasons (2014–2017), we monitored 103 nests of the five most abundant open-cup forest-dwelling passerines (Phrygilus patagonicus, Anairetes parulus, Turdus falcklandii, Elaenia albiceps, and Zonotrichia capensis) on Navarino Island (55°S), Cape Horn Biosphere Reserve, southern Chile. Additionally, we compared the breeding strategies of T. falcklandii to another population breeding at lower latitude (39°S). Results Most of the species started laying eggs the last week of September; only E. albiceps started 2 months later. During the breeding season of 2016–2017 both E. albiceps and Z. capensis started laying eggs earlier than the previous year. Anairetes parulus and Z. capensis were the most specialized in terms of nesting substrate. Turdus falcklandii had larger clutch sizes and nested closer to the ground on Navarino Island compared to the northern population, which might put this and other ground nesting species of this island at a higher risk of predation by the recently introduced American mink (Neovison vison). Conclusions Our five study species breed exclusively in open-cups (not in cavities) in sub-Antarctic forests, and some of them built their nests closer to the ground compared to populations breeding at lower latitudes. This may be associated with the lack of terrestrial predators on Navarino Island. Our study opens further questions about the mechanisms driving differences in breeding strategies among populations.
- ItemComposición y preferencia de materiales en nidos de vertebrados nidificadores de cavidades en el bosque templado andino de Chile(2016) Honorato, M. T.; Altamirano Oyarzún, Tomás Alberto; Ibarra Eliessetch, José Tomás; De La Maza, M.; Bonacic Salas, Cristián; Martin, K.
- ItemConsumo de queltehue (Vanellus chilensis) por tucúquere (Bubo magellanicus) en el bosque templado andino de La Araucanía : ¿depredación o carroñeo?(2016) Novoa, F.; Altamirano Oyarzún, Tomás Alberto; Ibarra Eliessetch, José Tomás
- ItemElevation has contrasting effects on avian and mammalian nest traits in the Andean temperate mountains(2019) Altamirano Oyarzún, Tomás Alberto; Honorato, M. T.; Ibarra Eliessetch, José Tomás; de la Maza, M.; de Zwaan, D.R.; Bonacic Salas, Cristián; Martin, K.
- ItemGüiña (Leopardus guigna) preys on cavity-nesting nestlings(2013) Altamirano Oyarzún, Tomás Alberto; Hernández, Felipe; Maza Musalem, Mariano Andrés de la; Bonacic Salas, Cristián
- ItemHistoria natural y autoecología del chuncho (glaucidium nana) en el bosque templado andino de la Araucanía, sur de Chile(2015) Ibarra Eliessetch, José Tomás; Altamirano Oyarzún, Tomás Alberto; Vergara, G.; Vermehren, A.; Vargas, F.H.; Martin, K.
- ItemInterspecific networks of cavity-nesting vertebrates reveal a critical role of broadleaf trees in endangered Araucaria mixed forests of South America(2019) Cockle, K.L.; Ibarra Eliessetch, José Tomás; Altamirano Oyarzún, Tomás Alberto; Martin, K.
- ItemLarge trees and decay : Suppliers of a keystone resource for cavity-using wildlife in old-growth and secondary Andean temperate forests(2020) Ibarra Eliessetch, José Tomás; Novoa, F. J.; Jaillard, H.; Altamirano Oyarzún, Tomás Alberto
- ItemObservations of a Tree-cavity Nest of the Rufous-legged Owl and Predation of an Owl Nestling by a Chimango Caracara in Andean Temperate Forests(2017) Ibarra Eliessetch, José Tomás; Altamirano Oyarzún, Tomás Alberto; Vermehren, A; Vargas, F; Martin, K
- ItemReproductive life-history variation in a secondary cavity-nester across an elevational gradient in Andean temperate ecosystems(2015) Altamirano Oyarzún, Tomás Alberto; Ibarra Eliessetch, José Tomás; Maza Musalem, Mariano Andrés de la; Navarrete C., Sergio; Bonacic Salas, Cristián
- ItemRoosting records in tree cavities by a forest-dwelling bat species (Histiotus magellanicus) in Andean temperate ecosystems of southern Chile. Registro de utilización de cavidades de árboles como refugios por un murciélago de bosque (Histiotus magellanicus) en ecosistemas templados andinos del sur de Chile.(2017) Altamirano Oyarzún, Tomás Alberto; Ibarra Eliessetch, José Tomás; Novoa, Fernando; Vermehren, Alejandra; Martin, Kathy; Bonacic Salas, Cristián
- ItemSeasonal dynamics of avian guilds inside and outside core protected areas in an Andean Biosphere Reserve of southern Chile(2017) Ibarra Eliessetch, José Tomás; Gálvez Robinson, Nicolás Cristián; Altamirano Oyarzún, Tomás Alberto; Caviedes, Julián; Rojas, Isabel M.; Bonacic Salas, Cristián; Martin, Kathy
- ItemSobre plumas y folclore: presencia de las aves en refranes populares de Chile(2013) Ibarra Eliessetch, José Tomás; Barreau, A.; Altamirano Oyarzún, Tomás Alberto
- ItemThe conservation value of tree decay processes as a key driver structuring cavity nest webs in South American temperate rainforests(2017) Altamirano Oyarzún, Tomás Alberto; Ibarra Eliessetch, José Tomás; Martin, Kathy; Bonacic Salas, Cristián
- ItemTreeline ecotones shape the distribution of avian species richness and functional diversity in south temperate mountains(2020) Altamirano Oyarzún, Tomás Alberto; de Zwaan, D. R.; Ibarra Eliessetch, José Tomás; Wilson, S.; Martín, K.