Comparative taxonomic structure of the floras of two Mediterranean-climate regions: Iberia and California

摘要: Two major events were invoked to understand recent biodiversity patterns in Mediterranean floras: northern hemisphere glaciations and historical human impacts. These two considered this work, where we investigated general plant species richness rarity attributes different regions: California Iberia. Our goal was assess whether comparisons of sort provided evidence extinctions rates, making an effort decouple anthropogenic from ice age-related effects both regions. We employed a taxonomically revised database for eight floras containing information on 298 families 11,834 taxa. We used summary statistics (Gini coefficient) randomly generated models test the distribution diversity within among taxonomic groups. then pattern provide context which evaluate our focal areas. Results indicated that Iberia share closest structure regions. Differences emerged identities rich findings interpreted light Pleistocene changes. In addition, closer focus allowed us pinpoint some segments these activities may drive variation patterns, specifically rare ecologically sensitive habitats.