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The colonisation of exotic species does not have to trigger faunal homogenisation : lessons from the assembly patterns of arthropods on oceanic islands

dc.contributor.authorFlorencio, Margarita
dc.contributor.authorLobo, Jorge M.
dc.contributor.authorCardoso, Pedro
dc.contributor.authorAlmeida-Neto, Mário
dc.contributor.authorBorges, Paulo A. V.
dc.date.accessioned2018-02-14T16:49:34Z
dc.date.available2018-02-14T16:49:34Z
dc.date.issued2015
dc.date.updated2015-05-31T09:59:58Z
dc.description.abstractHuman-caused disturbances can lead to the extinction of indigenous (endemic and native) species, while facilitating and increasing the colonisation of exotic species; this increase can, in turn, promote the similarity of species compositions between sites if human-disturbed sites are consistently invaded by a regionally species-poor pool of exotic species. In this study, we analysed the extent to which epigean arthropod assemblages of four islands of the Azorean archipelago are characterised by nestedness according to a habitat-altered gradient. The degree of nestedness represents the extent to which less ubiquitous species occur in subsets of sites occupied by the more widespread species, resulting in an ordered loss/gain of species across environmental or ecological gradients. A predictable loss of species across communities while maintaining others may lead to more similar communities (i.e. lower beta-diversity). In contrast, anti-nestedness occurs when different species tend to occupy distinct sites, thus characterising a replacement of species across such gradients. Our results showed that an increase in exotic species does not promote assemblage homogenisation at the habitat level. On the contrary, exotic species were revealed as habitat specialists that constitute new and well-differentiated assemblages, even increasing the species compositional heterogeneity within human-altered landscapes. Therefore, contrary to expectations, our results show that both indigenous and exotic species established idiosyncratic assemblages within habitats and islands. We suggest that both the historical extinction of indigenous species in disturbed habitats and the habitat-specialised character of some exotic invasions have contributed to the construction of current assemblages.en
dc.description.sponsorshipDirecção Regional da Ciência, Tecnologia e Comunicações (DRCT) (M3.1.7/F/002/2011).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFlorencio, M.; Lobo, J.M.; Cardoso, P.; Almeida-Neto, M.; Borges, P.A.V. (2015). The colonisation of exotic species does not have to trigger faunal homogenisation: lessons from the assembly patterns of arthropods on oceanic islands, "PLoS ONE", 10(5): e0128276. DOI: 10.1371/journal.pone.0128276pt_PT
dc.identifier.doi10.1371/journal.pone.0128276pt_PT
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/10400.3/4584
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectArthropodsen
dc.subjectEndemic Speciesen
dc.subjectAzores Archipelagoen
dc.titleThe colonisation of exotic species does not have to trigger faunal homogenisation : lessons from the assembly patterns of arthropods on oceanic islandsen
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage16pt_PT
oaire.citation.issue(5)pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titlePLOS ONEpt_PT
oaire.citation.volume10pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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