{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T10:11:10Z","timestamp":1778667070303,"version":"3.51.4"},"posted":{"date-parts":[[2023,4,20]]},"reference-count":0,"publisher":"Wiley","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>Introduced alien species have direct and indirect effects on native\ncommunities, leading to lower taxonomic diversity and negative impacts\non ecosystem functioning. Moreover, other aspects of diversity could be\nnegatively affected, through alteration of functional and phylogenetic\ndiversity of a community. This is particularly evident in habitats where\nhuman disturbance may favour alien species, posing an additional\nstressor on native communities. Following the community resistance\nhypothesis (higher diversity, higher resistance to invasion), we\nhypothesized: i) higher taxonomic, functional and phylogenetic diversity\n(TD, FD and PD respectively) in non-invaded bird communities (i.e. no\nalien bird species); and, ii) lower alien species impact on all\ndiversity metrics in less human-disturbed areas. We surveyed bird\ncommunities in a modified Mediterranean landscape subject to varying\nlevels of human disturbance. We tested whether TD, FD and PD indices\nwere significantly different between non-invaded and invaded bird\ncommunities, and assessed the effect of landscape composition and\nconfiguration on these indices. We found that non-invaded communities\nretained higher TD and FD than invaded communities. Alien birds occupied\nnovel parts of the functional space in invaded communities, but that\nthey did not fully compensate for the taxonomic and functional diversity\nloss caused by the absence of native species. These results were\nconsistent across different habitats, suggesting weak environmental\nfiltering of communities. Generally, both communities were negatively\naffected by more human-disturbed areas (e.g. agriculture and urban\nareas) and enhanced by forest areas and by landscape heterogeneity. Our\nresults suggest that the occurrence of alien birds negatively affects TD\nand FD (but not PD) of bird community assemblages, but that this impact\nis stronger in human-modified landscapes. Therefore, since the\nconservation of biodiversity in anthropogenic habitats is a worldwide\nchallenge, researchers should prioritize efforts to assess the effects\nof alien species on communities inhabiting those habitats.<\/jats:p>","DOI":"10.22541\/au.168197956.67346666\/v1","type":"posted-content","created":{"date-parts":[[2023,4,20]],"date-time":"2023-04-20T04:34:29Z","timestamp":1681965269000},"source":"Crossref","is-referenced-by-count":0,"title":["Alien bird species decrease the diversity of bird communities across human-disturbed landscapes"],"prefix":"10.22541","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9038-886X","authenticated-orcid":false,"given":"Fabio","family":"Marcolin","sequence":"first","affiliation":[{"name":"Universidade de Lisboa Instituto Superior de Agronomia"}]},{"given":"Pedro","family":"Segurado","sequence":"additional","affiliation":[{"name":"Universidade de Lisboa Centro de Estudos Florestais"}]},{"given":"Daniel","family":"Chamberlain","sequence":"additional","affiliation":[{"name":"Universita degli Studi di Torino"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9768-1097","authenticated-orcid":false,"given":"Luis","family":"Reino","sequence":"additional","affiliation":[{"name":"CIBIO-University of Porto"}]}],"member":"311","container-title":[],"original-title":[],"link":[{"URL":"https:\/\/www.authorea.com\/doi\/pdf\/10.22541\/au.168197956.67346666\/v1","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T09:20:49Z","timestamp":1778664049000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.authorea.com\/doi\/full\/10.22541\/au.168197956.67346666\/v1"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,4,20]]},"references-count":0,"URL":"https:\/\/doi.org\/10.22541\/au.168197956.67346666\/v1","relation":{},"subject":[],"published":{"date-parts":[[2023,4,20]]},"subtype":"preprint"}}