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Functional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use changes in an oceanic island, Terceira, Azores

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dc.contributor.authorRigal, François
dc.contributor.authorCardoso, Pedro
dc.contributor.authorLobo, Jorge M.
dc.contributor.authorTriantis, Kostas A.
dc.contributor.authorWhittaker, Robert J.
dc.contributor.authorAmorim, Isabel R.
dc.contributor.authorBorges, Paulo A. V.
dc.date.accessioned2018-07-06T11:00:17Z
dc.date.available2018-07-06T11:00:17Z
dc.date.issued2018
dc.description.abstractAIM: Land-use change typically goes hand in hand with the introduction of exotic species, which mingle with indigenous species to form novel assemblages. Here, we compare the functional structure of indigenous and exotic elements of ground-dwelling arthropod assemblages across four land-uses of varying management intensity. LOCATION: Terceira Island (Azores, North Atlantic). METHODS: We used pitfall traps to sample arthropods in 36 sites across the four land-uses and collated traits related to dispersal ability, body size and resource use. For both indigenous and exotic species, we examined the impact of land-uses on trait diversity and tested for the existence of non-random assembly processes using null models. We analysed differences in trait composition among land-uses for both indigenous and exotic species with multivariate analyses. We used point–biserial correlations to identity traits significantly correlated with specific land-uses for each element. RESULTS: We recorded 86 indigenous and 116 exotic arthropod species. Under high-intensity land-use, both indigenous and exotic elements showed significant trait clustering. Trait composition strongly shifted across land-uses, with indigenous and exotic species being functionally dissimilar in all land-uses. Large-bodied herbivores dominated exotic elements in low-intensity land-uses, while small-bodied spiders dominated exotic elements in high-intensity land-uses. In contrast, with increasing land-use intensity, indigenous species changed from functionally diverse to being dominated by piercing and cutting herbivores. Main conclusions: Our study revealed two main findings: first, in high-intensity land-uses, trait clustering characterized both indigenous and exotic elements; second, exotic species differed in their functional profile from indigenous species in all land-use types. Overall, our results provide new insights into the functional role of exotic species in a land-use context, suggesting that, in agricultural landscape, exotic species may contribute positively to the maintenance of some ecosystem functions.en
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRigal, F., Cardoso, P., Lobo, J.M., Triantis, K.A., Whittaker, R.J., Amorim, I.R. & Borges, P.A.V. (2018). Functional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use changes in an oceanic island, Terceira, Azores. "Diversity and Distributions", 24(1): 36-47. DOI:10.1111/ddi.12655pt_PT
dc.identifier.doi10.1111/ddi.12655pt_PT
dc.identifier.issn1472-4642
dc.identifier.urihttp://hdl.handle.net/10400.3/4768
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherBlackwell Publishingpt_PT
dc.relationBiodiversity on oceanic islands: towards a unified theory
dc.subjectArthropodsen
dc.subjectAzoresen
dc.subjectCommunity Assemblyen
dc.subjectExotic Speciesen
dc.subjectFunctional Diversityen
dc.subjectIndigenous Speciesen
dc.titleFunctional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use changes in an oceanic island, Terceira, Azoresen
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBiodiversity on oceanic islands: towards a unified theory
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FBIA-BIC%2F119255%2F2010/PT
oaire.citation.conferencePlaceUnited Kingdompt_PT
oaire.citation.endPage47pt_PT
oaire.citation.issue(1)pt_PT
oaire.citation.startPage36pt_PT
oaire.citation.titleDiversity and Distributionsen
oaire.citation.volume24pt_PT
oaire.fundingStream3599-PPCDT
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isProjectOfPublication06fbea24-58be-4bad-8ec2-4c8d8d5ae0d9
relation.isProjectOfPublication.latestForDiscovery06fbea24-58be-4bad-8ec2-4c8d8d5ae0d9

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