Reconstruction of Jomon ecosystems in the Kanto region based on Yoshii and Kayama shell mounds, Hashidate rock shelter, and Kasori shell mounds

Shibata, K.; Ota, K.; Matsukawa, M.

Yokosuka-shi Hakubutsukan kenkyu hokoku. Shizen kagaku 58

2011


Accession: 037141285

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Abstract
Paleo-ecosystems of the Early and Late Jomon period (ca 12,000 to 2,400 years ago) are reconstructed quantitatively on the basis of relics from shell mounds in the Miura Peninsula, the Hashidate rock shelter in Saitama Prefecture, and Kasori shell mounds in Chiba Prefecture. Yoshii and Kayama shell mounds were studied in the analysis of the Miura Peninsula. The results show the dominance of Sus scrofa and Cervus nippon in the reconstructed paleo-ecosystems. The population density of the Jomon people was estimated as 7.3-22.9 persons per 1 km2 , which is interpreted to reflect a limited population pursuing a collecting and hunting life style. Population density of Canis lupus hodophilax in the Kasori paleo-ecosystem was estimated at less than the density in the previously reconstructed Pleistocene ecosystem of the Kanto region. Increased human population and associated food consumption are interpreted to have resulted in the decrease and/or extinction of the large mammals.