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First description of the micro-habitat selection pattern of the island endemic Juan Fernandez Tit-tyrant Gayana
Soto,Gerardo E; Vergara,Pablo M; Hahn,Ingo J; Pérez-Hernández,Christian G; Lizama,Marlene E; Baumeister,Julia; Pizarro,Jaime.
The level of specialization of endemic island birds to their native habitats could contribute importantly to increase their extinction risk. We used abundance obtained from mist-netting and radio telemetry data from one individual to determine the micro-habitat use pattern of Juan Fernandez Tit-tyrants (Anairetes fernandezianus) within native forest. The tracked male tit-tyrant established its home range exclusively in core native forest areas. Regression models of abundance and Resource Utilization Functions showed strong micro-habitat preferences of tit-tyrants. The abundance and utilization probabilities of tit-tyrants declined with distance to exotic shrub and increased with distance to human created gaps. Natural heterogeneity in micro-habitat...
Tipo: Journal article Palavras-chave: Robinson Crusoe Island; Anairetes fernandezianus; Micro-habitat.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382013000100001
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