Plant dispersal characteristics shape the relationship of diversity with area and isolation

Aim The relation of plant dispersal syndromes with insular species richness patters remains one the challenges in island biogeography, especially as people have affected distribution patterns. This study disentangles how influence relationship area and isolation while also accounting for human impact on biodiversity. It builds potential islands at mesoscale similar origin to contribute ongoing discussion biogeography what determines filtering. Location Denmark, 54 North Baltic Sea. Taxon Vascular plants, including pteridophytes. Methods Generalized linear models (GLMs) regressions are used analyse relationships numbers isolation, well inhabitation density, respectively. Results Species numbers, seed mass proportion zoochore anemochore positively related share water-dispersed decreases increasing area. Isolation is weakly mean but has no explaining power presence specific syndrome target islands. were presence. Main conclusions Human centuries not overwritten strong Danish Islands affecting shape this relationship. Island constitutes a filter different leads assumption that heavier animal-dispersed seeds due more bird mammal species. Human-induced loss caused by traffic connection landmasses bridges ferries may be reason overall low explanatory isolation.