First description of the micro-habitat selection pattern of the island endemic Juan Fernandez Tit-tyrant

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-tyra...

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Autores principales:	Soto,Gerardo E, Vergara,Pablo M, Hahn,Ingo J, Pérez-Hernández,Christian G, Lizama,Marlene E, Baumeister,Julia, Pizarro,Jaime
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2013
Materias:	Robinson Crusoe Island Anairetes fernandezianus micro-habitat
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382013000100001
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spelling	oai:scielo:S0717-653820130001000012013-10-15First description of the micro-habitat selection pattern of the island endemic Juan Fernandez Tit-tyrantSoto,Gerardo EVergara,Pablo MHahn,Ingo JPérez-Hernández,Christian GLizama,Marlene EBaumeister,JuliaPizarro,Jaime Robinson Crusoe Island Anairetes fernandezianus micro-habitat 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 conditions also affected the micro-habitat selection pattern, with use probabilities and abundance increasing with proximity to the humid sites dominated by Gunnera peltata. These findings demonstrate that tit-tyrants do not use native forest sites at random. Therefore, the conservation and recovery of the declining tit-tyrant population could be improved by incorporating such micro-habitat preferences in habitat management programs.info:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.77 n.1 20132013-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382013000100001en10.4067/S0717-65382013000100001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Robinson Crusoe Island Anairetes fernandezianus micro-habitat
spellingShingle	Robinson Crusoe Island Anairetes fernandezianus micro-habitat Soto,Gerardo E Vergara,Pablo M Hahn,Ingo J Pérez-Hernández,Christian G Lizama,Marlene E Baumeister,Julia Pizarro,Jaime First description of the micro-habitat selection pattern of the island endemic Juan Fernandez Tit-tyrant
description	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 conditions also affected the micro-habitat selection pattern, with use probabilities and abundance increasing with proximity to the humid sites dominated by Gunnera peltata. These findings demonstrate that tit-tyrants do not use native forest sites at random. Therefore, the conservation and recovery of the declining tit-tyrant population could be improved by incorporating such micro-habitat preferences in habitat management programs.
author	Soto,Gerardo E Vergara,Pablo M Hahn,Ingo J Pérez-Hernández,Christian G Lizama,Marlene E Baumeister,Julia Pizarro,Jaime
author_facet	Soto,Gerardo E Vergara,Pablo M Hahn,Ingo J Pérez-Hernández,Christian G Lizama,Marlene E Baumeister,Julia Pizarro,Jaime
author_sort	Soto,Gerardo E
title	First description of the micro-habitat selection pattern of the island endemic Juan Fernandez Tit-tyrant
title_short	First description of the micro-habitat selection pattern of the island endemic Juan Fernandez Tit-tyrant
title_full	First description of the micro-habitat selection pattern of the island endemic Juan Fernandez Tit-tyrant
title_fullStr	First description of the micro-habitat selection pattern of the island endemic Juan Fernandez Tit-tyrant
title_full_unstemmed	First description of the micro-habitat selection pattern of the island endemic Juan Fernandez Tit-tyrant
title_sort	first description of the micro-habitat selection pattern of the island endemic juan fernandez tit-tyrant
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382013000100001
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First description of the micro-habitat selection pattern of the island endemic Juan Fernandez Tit-tyrant

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