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dc.contributor.author
Bridgman, Lucy J.
dc.contributor.author
Benitez, Verónica Victoria
dc.contributor.author
Graña Grilli, Maricel
dc.contributor.author
Mufato, Natalia
dc.contributor.author
Acosta, Daniela
dc.contributor.author
Guichon, Maria Laura
dc.date.available
2019-04-23T15:38:18Z
dc.date.issued
2012-05
dc.identifier.citation
Bridgman, Lucy J.; Benitez, Verónica Victoria; Graña Grilli, Maricel; Mufato, Natalia; Acosta, Daniela; et al.; Short perceptual range and yet successful invasion of a fragmented landscape: The case of the red-bellied tree squirrel (Callosciurus erythraeus) in Argentina; Springer; Landscape Ecology; 27; 5; 5-2012; 633-640
dc.identifier.issn
0921-2973
dc.identifier.uri
http://hdl.handle.net/11336/74792
dc.description.abstract
Dispersal is a key element of the invasion process for introduced species, and is influenced by landscape connectivity. The red-bellied squirrel (Callosciurus erythraeus) was introduced to Argentina in 1970. Suitable forest habitat for this arboreal species is highly fragmented in a rural-urban matrix, but despite this, the squirrel population has spread. Squirrels disperse into new habitat patches using connective features such as forest corridors. They may also cross gaps but up to what extent is not known. Gap crossing success is influenced by perceptual range, which is the distance from which animals can perceive suitable habitat. Perceptual range has been previously estimated for vulnerable species, but not for introduced species. We used a model relating perceptual range to body mass to predict the perceptual range of the red-bellied tree squirrel in Argentina. We then tested our prediction of 202-221 m by releasing squirrels in an unfamiliar arable field at different distances (300, 200, 100 and 20 m) from woodland habitat. We assumed that if woodland could be perceived, squirrels would orientate toward it. We estimated perceptual range to be between 20 and 100 m, considerably lower than predicted. Our results indicate that squirrels can potentially cross small habitat gaps, but dispersal over greater distances lacking connectivity is less likely. Incorporating this information when modelling the spread of exotic squirrels in the Pampas Region can yield more accurate prediction of the invasion process and guide management practices to minimise their expansion. © 2012 Springer Science+Business Media B.V.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Dispersal
dc.subject
Invasive Rodents
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Landscape Connectivity
dc.subject
Orientation
dc.subject
Translocation Experiment
dc.subject.classification
Otras Ciencias Biológicas
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Short perceptual range and yet successful invasion of a fragmented landscape: The case of the red-bellied tree squirrel (Callosciurus erythraeus) in Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-04-23T15:06:24Z
dc.journal.volume
27
dc.journal.number
5
dc.journal.pagination
633-640
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Bridgman, Lucy J.. The University of Waikato; Nueva Zelanda
dc.description.fil
Fil: Benitez, Verónica Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
dc.description.fil
Fil: Graña Grilli, Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
dc.description.fil
Fil: Mufato, Natalia. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
dc.description.fil
Fil: Acosta, Daniela. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
dc.description.fil
Fil: Guichon, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
dc.journal.title
Landscape Ecology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1007/s10980-012-9727-2
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10980-012-9727-2


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