Phylogenetic relatedness of alien plants depends on their donor habitats
| Autoři | |
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| Rok publikování | 2020 |
| Druh | Konferenční abstrakty |
| Citace | |
| Popis | Many European native species have naturalized worldwide. We tested whether the phylogenetic structure of the vegetation in European habitats can be used to detect their potential for donating naturalized species to other parts of the world. We assumed naturalized species are closely phylogenetically related, possibly sharing similar strategies that have evolved in their native range. We delimited 39 European donor habitats and their specific species pools including 9,608 plant species, of which 2,295 have naturalized outside Europe. In each habitat, we quantified standard effect sizes of ‘mean pairwise phylogenetic distance’ (SES MPD), for the whole species pool and for subgroups of native species that have naturalized and those that have not. We used generalized linear models to test the effects of habitat phylogenetic structure and human influence on the proportion of species donated by European habitats for naturalization. We also compared the phylogenetic structure of species subgroups across and within habitat species pools. We found that in intensively to moderately human-influenced habitats in Europe, the proportion of species in their pool that have naturalized outside Europe was not related to its phylogenetic structure. In these habitats the entire species pool was phylogenetically clustered, indicating selection for disturbance-adapted species within lineages. The more species these habitats donate as naturalized, the more phylogenetically related to these species are. All these species probably share necessary strategies to establish in human-disturbed environments. In habitats less influenced by humans, the proportion of naturalized species increased with increasing phylogenetic distance among species pool members. In such habitats, a species has to interact with many lineages with various strategies which possibly makes it capable of occurring in a broad range of conditions in the invaded range. Our findings show that the pattern in the phylogenetic structure of naturalized species from Europe is strongly habitat-dependent. |
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