Pteridophyte richness in the NE Iberian Peninsula: biogeographic patterns (original) (raw)

The richness and coexistence of pteridophyte species were studied at the mesoscale level in the NE Iberian Peninsula (Catalonia and Andorra) using a grid system with 10× 10 km cell-size. The number of pteridophytes, the number of monolete and trilete ferns (two spore patterns), and the number of polyploid and diploid ferns were studied in 371 of such units. The results suggest:(a) a significant relationship of pteridophyte species richness with higher-taxon richness (genera, family, order, class);(b) a significant relationship between ...