Archaeorolgicai study for adaptation of the fresh water product shellfish on rice-paddy cultivation in Iriomotejima Island, Okinawa

Research Project

Project/Area Number	15K02989
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Archaeology
Research Institution	Tokai University
Principal Investigator	HOJO YOSHITAKA 東海大学, 文学部, 教授 (10243693)
Co-Investigator(Renkei-kenkyūsha)	KOUHO HIROYOSHI 東海大学, 沖縄地域研究センター, 教授 (30439682)
Project Period (FY)	2015-04-01 – 2018-03-31
Project Status	Completed (Fiscal Year 2017)
Budget Amount *help	¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000) Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000) Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000) Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords	水田環境 / 二次的生態系 / 水田養殖 / マルタニシ / 水稲農耕民 / 土壌環境 / 水田漁撈 / ２次的生態系 / ナキオカオオヤドカリ
Outline of Final Research Achievements	This study aims at understanding the date of emergence of the raising Mud-snail on the rice-paddy cultivation in the Iriomotejima Island, Okinawa. The conclusion reached in this three years archaeological project do indicate that the date of emergence of the raising Mud-snail on the rice-paddy cultivation in this area goes back to the late 18th century. This kind of discovery is the rare case in the Okinawa.