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Patch colonization dynamics in Carolina chickadees (Poecile carolinensis) in a fragmented landscape: a manipulative study Public Deposited

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  • Habitat and landscape features that influence the rate of interpatch movement and colonization may determine the likelihood that a species will persist in fragmented landscapes. We simulated patch extinction by removing Carolina Chickadees (Poecile carolinensis) from woodland fragments in an Ohio agricultural landscape in January 2002. We then monitored the woodlands to determine their dates of reoccupation and subsequent use for breeding by the birds. All woodlots were eventually reoccupied, regardless of size or degree of isolation, but woodlots in less-forested landscapes connected to other woodland by habitat corridors were reoccupied sooner than unconnected woodlots. Reoccupation was more likely to occur during periods of mild wind chill. Following reoccupation, individual Carolina Chickadees were more often temporarily absent from smaller woodlots, which suggests that they may have used woodlots that insufficiently met foraging or breeding requirements. Carolina Chickadees were more likely to remain to breed in larger woodlots. Results indicate that habitat connectivity may affect the tendency of this species to move through a fragmented landscape. Habitat corridors may be important management tools for maintaining movement of animals between patches.
  • Las características del hábitat y del paisaje que influencian la tasa de movimiento y colonización entre parches puede determinar la probabilidad de que una especie determinada persista en pasajes fragmentados. Simulamos la extinción en parches mediante la remoción de individuos de Poecile carolinensis en fragmentos de bosque en un paisaje agrícola en Ohio en enero del 2002. Posteriormente monitoreamos los fragmentos para determinar las fechas de reocupación y el uso posterior para reproducción por parte de las aves. Todos los fragmentos fueron reocupados eventualmente, independientemente de su tamaño o grado de aislamiento, pero los fragmentos que se encontraban en paisajes con menor cobertura de bosque pero conectados por corredores a otros fragmentos fueron reocupados antes que los fragmentos no conectados. La reocupación fue más probable durante periodos con vientos moderados fríos. Posterior a la reocupación, en fragmentos pequeños los individuos de P. carolinensis presentaron más ausencias temporales, lo que sugiere que éstos usaron fragmentos que no cumplían los requerimientos mínimos para el forrajeo o la reproducción. Los individuos de P. carolinensis tuvieron una mayor probabilidad de continuar reproduciéndose en los fragmentos de mayor tamaño. Los resultados de este estudio indican que la conectividad del hábitat puede afectar la tendencia de esta especie a moverse a través de un paisaje fragmentado. Los corredores de hábitat pueden ser herramientas de manejo importantes para mantener el movimiento de animales entre parches.
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  • Groom, J. D., & Grubb, T. C. (2006, October). Patch colonization dynamics in Carolina chickadees (Poecile carolinensis) in a fragmented landscape: a manipulative study. The Auk, 123(4), 1149-1160. doi:10.1642/0004-8038(2006)123[1149:PCDICC]2.0.CO;2
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  • 123
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  • 4
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  • This project was funded by grants fromThe Ohio State University (OSU) GraduateSchool and the Columbus Zoo and Aquariumunder OSU ILACUC protocol 01A0131
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  • description.provenance : Submitted by Sue Kunda (sue.kunda@oregonstate.edu) on 2011-09-21T00:16:47Z No. of bitstreams: 1 GroomJeremy.FERM.PatchColonization.pdf: 4967727 bytes, checksum: ab3761f997e91f5b76f934f4eaececbe (MD5)
  • description.provenance : Made available in DSpace on 2011-09-21T00:17:07Z (GMT). No. of bitstreams: 1 GroomJeremy.FERM.PatchColonization.pdf: 4967727 bytes, checksum: ab3761f997e91f5b76f934f4eaececbe (MD5) Previous issue date: 2006
  • description.provenance : Approved for entry into archive by Sue Kunda(sue.kunda@oregonstate.edu) on 2011-09-21T00:17:07Z (GMT) No. of bitstreams: 1 GroomJeremy.FERM.PatchColonization.pdf: 4967727 bytes, checksum: ab3761f997e91f5b76f934f4eaececbe (MD5)

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