Details

Autor(en) / Beteiligte

• Marino, Clara
• Journiac, Lysandre
• Liu, Chunlong
• Jeschke, Jonathan M.
• Bellard, Céline

Titel

The anthropocene biogeography of alien birds on islands: Drivers of their functional and phylogenetic diversities

Ist Teil von

• Ecology letters, 2024-06, Vol.27 (6), p.e14465-n/a

Ort / Verlag

Paris: Blackwell Publishing Ltd

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• A branch of island biogeography has emerged to explain alien species diversity in the light of the biogeographic and anthropogenic context, yet overlooking the functional and phylogenetic facets. Evaluating alien and native birds of 407 oceanic islands worldwide, we built structural equation models to assess the direct and indirect influence of biotic, geographic, and anthropogenic contexts on alien functional diversity (FD) and phylogenetic diversity (PD). We found that alien taxonomic richness was the main predictor of both diversities. Anthropogenic factors, including colonization pressure, associated with classic biogeographical variables also strongly influenced alien FD and PD. Specifically, habitat modification and human connectivity markedly drove alien FD, especially when controlled by taxonomic richness, whereas the human population size, gross domestic product, and native PD were crucial at explaining alien PD. Our findings suggest that humans not only shape taxonomic richness but also other facets of alien diversity in a complex way. We described the functional and phylogenetic diversity (PD) of alien birds on 407 oceanic islands. We used structural equation models to evaluate the direct and indirect influence of biotic, geographic, and anthropogenic contexts in shaping those diversities. Alien taxonomic richness was the main predictor of both diversities but anthropogenic factors associated with classic biogeographical variables also strongly influenced alien functional and PD.