Acknowledgements
We thank Ryota Aoyagi, Keito Kobayashi, Susan Cordell, Elizabeth Stacy,
Rebecca Ostertag, Amanda Uowolo, Tomoko Sakishima, Gary Sur, and Joshua
Nagle for their supports on our fieldwork. We also thank the Department
of Land and Natural Resources (DOFAW) for permission to take plant
samples. This study was partly supported by grants from JSPS KAKENHI
#JP17J04193 to GA and #15KK0255 to YO, and Internship Subsidy from
CoHHO (the Connectivity of Hills, Humans, and Oceans) Educational
Program to GA.