Abstract Detail

Pteridology

Nitta, Joel [1], Mishler, Brent [2], Iwasaki, Wataru [1], Ebihara, Atsushi [3].

Exploring dimensions of biodiversity in Japanese ferns.

The ferns of Japan (ca. 675 native taxa, including subspecies and varieties, excluding hybrids) are one of the best-studied fern floras in the world due to decades of research by both scientists and amateurs. Available datasets include distribution maps to 10-km resolution (covering nearly 100% of taxa), a plastid phylogeny (98%), morphological traits (98%), and chromosome counts (75%). However, most analyses of Japanese ferns have been limited to patterns of species richness, and none have combined these datasets in an evolutionary context. Here, we integrate these data sources to explore the biodiversity of Japanese ferns in depth. We find that different aspects of biodiversity are decoupled, varying across Japan in different, often subtle ways. The southern (Ryukyu) islands stand out for their high levels of endemism and phylogenetic diversity, likely a result of their small size and tropical affinities. Taken together, our analyses provide the most detailed picture to date of this remarkably diverse flora.

1 - University of Tokyo, Department of Biological Sciences, Faculty of Science, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan
2 - University of California, Berkeley, University and Jepson Herbaria and Department of Integrative Biology, 1001 Valley Life Sciences Bldg, #2465, Berkeley, CA, 94720, USA
3 - National Museum of Nature and Science, Department of Botany, 4‑1‑1 Amakubo, Tsukuba, 305‑0005, Japan

Keywords:
Japan
Spatial phylogenetics
Biodiversity
Community phylogenetics
fern.

Presentation Type: Oral Paper
Session: PTER1, Pteridology I
Location: Virtual/Virtual
Date: Monday, July 27th, 2020
Time: 11:15 AM
Number: PTER1006
Abstract ID:514
Candidate for Awards:Edgar T. Wherry award