Annual Variation of Abundance and Composition in Forest Bird Assemblages on Navarino Island, Cape Horn Biosphere Reserve, Chile Metadata
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- Main Title Annual Variation of Abundance and Composition in Forest Bird Assemblages on Navarino Island, Cape Horn Biosphere Reserve, Chile
- Series Title Sub-Antarctic Biocultural Conservation Program
Author: Ippi, SilvinaCreator Type: PersonalCreator Info: Universidad de Magallanes
Author: Anderson, Christopher B.Creator Type: PersonalCreator Info: Universidad de Magallanes; Instituto de Ecología y Biodiversidad
Author: Rozzi, Ricardo, 1960-Creator Type: PersonalCreator Info: University of North Texas; Universidad de Magallanes; Instituto de Ecología y Biodiversidad
Author: Elphick, Chris S.Creator Type: PersonalCreator Info: Universidad de Magallanes; University of Connecticut
Name: Neotropical Ornithological SocietyPlace of Publication: [Caracas, Venezuela]
- Creation: 2009
- Content Description: Article on the annual variation of abundance and composition in forest bird assemblages on Navarino Island, Cape Horn Biosphere Reserve, Chile.
- Physical Description: 15 p.
- Keyword: forest birds
- Keyword: subantarctic forests
- Keyword: Chile
- Keyword: Cape Horn
- Keyword: point-count surveys
- Journal: Ornitologia Neotropical, 2009, Caracas: Neotropical Ornithological Society, pp. 231-245
- Publication Title: Ornitologia Neotropical
- Volume: 20
- Page Start: 231
- Page End: 245
- Pages: 15
- Peer Reviewed: True
Name: UNT Scholarly WorksCode: UNTSW
Name: UNT College of Arts and SciencesCode: UNTCAS
- Rights Access: public
- Archival Resource Key: ark:/67531/metadc97951
- Academic Department: Philosophy and Religion Studies
- Display Note: Abstract: The structure and dynamics of avian communities in the temperate forests of southern South America have been generally studied during the breeding season (November - March), and reports about seasonal variations and migratory behavior of species are almost lacking. This study examined intra-annual variations on a monthly basis in bird species composition and abundance in the world's southernmost forested ecosystems, found in the Cape Horn Biosphere Reserve, Chile (55°S). Combining data obtained through point-count surveys, mist-netting, and checklist methods, the authors recorded a total of 34 bird species belonging to 20 families. Eighteen of these species were Passeriformes, and the most abundant year-round resident species were Thorn-tailed Rayadito (Aphrastura spinicauda) and Patagonian Sierra-Finch (Phrygilus patagonicus). The most abundant seasonal migrants species were White-crested Elaenia (Elaenia albiceps) and Southern House Wren (Troglodytes musculus). Point-count and mist-netting methods showed a reduction in species richness and abundance during winter, with one third of the bird assemblage absent. This proportion was lower than that documented for more northern Nothofagus forests. Additionally, the authors' data provided no evidence that intra-annual patterns of avian community structure were significantly affected by a recently implemented tourism trail through the Omora Park. The authors believe that understanding seasonal patterns of richness, abundance, and migratory status of Chilean temperate forests birds will help to better understand the world's southernmost forest ecosystem, implement effective conservation, facilitate sustainable ecotourism, and lead to new ecological and evolutionary research.