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Bird extinctions and introductions are causing taxonomic and functional homogenization in oceanic islands

2022-12Journal article Open access
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dc.contributor.authorFerreira Soares, Filipa
dc.contributor.authorM. Palmeirim, Jorge
dc.contributor.authorRodrigues, Ana S. L.
dc.contributor.authorCardoso, Pedro
dc.contributor.authorF. De Lima, Ricardo
dc.date.accessioned2023-01-06T10:28:58Z
dc.date.available2023-01-06T10:28:58Z
dc.date.issued2022-12
dc.description.abstractHumans are quickly reshaping species assemblages through the loss and gain of species at multiple scales. Extinctions and introductions are non-random events known to be contributing to taxonomic homogenization. However, it is not yet clear if they also promote functional homogenization. Here, we assess whether extinctions and introductions are leading to taxonomic and functional homogenization of 64 oceanic island bird assemblages, belonging to 11 archipelagos. Based on island lists of extinct and extant, native and introduced species and on species traits, we use probabilistic hypervolumes in trait space to calculate functional beta-diversity before and after extinctions and introductions. Bird extinctions and introductions promoted taxonomic and functional homogenization on most oceanic islands. These results follow our expectations, considering previous studies on taxonomic homogenization, the predictable link between taxonomic and functional diversity, and the trait similarity of many introduced species, often adapted to anthropogenic habitats, linked to the non-randomness of bird introductions on islands. Taxonomic homogenization was more common across than within archipelagos, also corroborating previous studies describing stronger homogenization on islands that are further apart and thus had distinctive native assemblages. Surprisingly, the widespread loss of species with similar traits, namely large flightless birds, often led to functional differentiation across archipelagos. However, this differentiation effect tended to be offset by the homogenizing effect of introductions. Functional homogenization increases the vulnerability to global changes, by reducing the variability of responses to disturbance and thus the resilience of ecosystem services, posing a threat to human societies on islands. Our results highlight subtle variations in taxonomic and functional beta-diversity of bird assemblages in oceanic islands, providing important insights to allow a better assessment of how anthropogenic changes might alter ecosystem functioning, which is vital to develop effective long-term conservation strategies.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSoares, F. C., Palmeirim, J. M., Rodrigues, A. S. L., Cardoso, P., & de Lima, R. F. (2022). Bird extinctions and introductions are causing taxonomic and functional homogenization in oceanic islands. Functional Ecology, 36, 2892– 2905. https://doi.org/10.1111/1365-2435.14196pt_PT
dc.identifier.doi10.1111/1365-2435.14196pt_PT
dc.identifier.urihttp://hdl.handle.net/10451/55681
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationFCT PD/BD/140832/2018pt_PT
dc.relationFCT UIDB/00329/2020pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.titleBird extinctions and introductions are causing taxonomic and functional homogenization in oceanic islandspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage2905pt_PT
oaire.citation.issue12pt_PT
oaire.citation.startPage2892pt_PT
oaire.citation.titleFunctional Ecologypt_PT
oaire.citation.volume36pt_PT
person.familyNameFerreira Soares
person.familyNamePalmeirim
person.familyNameF. de Lima
person.givenNameFilipa
person.givenNameJorge Manuel
person.givenNameRicardo
person.identifier.ciencia-id4612-28AD-C19F
person.identifier.ciencia-id3F14-ED75-BCE2
person.identifier.orcid0000-0002-4678-1995
person.identifier.orcid0000-0003-4734-8162
person.identifier.orcid0000-0002-0184-3945
person.identifier.ridC-2826-2011
person.identifier.scopus-author-id36647255600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationaafdf249-310d-479b-84f9-84cf574f8a30
relation.isAuthorOfPublication287030bb-617c-418d-bbae-9c8466288169
relation.isAuthorOfPublication31b4465a-8ae8-4d72-82ec-61a610db7139
relation.isAuthorOfPublication.latestForDiscovery31b4465a-8ae8-4d72-82ec-61a610db7139

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