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Accounting shadow benefits of non-market food through food-sharing networks on Hachijo Island, Japan

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Abstract

People in rural areas often grow foods in their home gardens and share them through food-sharing networks. Besides the obvious economic benefits, such shared food via non-market transactions enriches the inhabitants’ lives by strengthening their social relationships and nutritional quality. These shadow benefits of non-market food are qualitatively recognized, but have not been fully integrated into formal accounting systems. Thus, the present study quantifies the shadow benefits of food-sharing networks by considering the non-market food distribution on Hachijo Island, Japan. Based on interviews and questionnaire surveys, we graphically visualized the structure of the food-sharing networks and the seasonality of the shared-food species. The study revealed the proportions of foods acquired through self-production, sharing networks and purchases by systematic food category, and quantified the monetary and nutritional values of the non-market foods. The island residents shared various seasonal foods within and beyond the island, and the non-market food was beneficial to their health. More than 20% of the islanders’ annual consumption of potatoes, vegetables, seafood, and fruits were obtained through the food-sharing networks. Non-market food largely saved the household expenditure and provided a wide variety of nutrients. As future perspectives of food-sharing networks, we suggest balancing market-based and non-market food provisions, promoting local production for local consumption, and designing local food resilience in disaster events.

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Acknowledgements

This research received support through Grants-in-Aid for Scientific Research (KAKENHI, 15KT0027 ‘‘Building a sustainable society through the integration between food sharing, low-carbon and resource efficient food supply system’’, Japan Society for the Promotion of Science, from FY2015 to FY2017) and the Environment Research and Technology Development Fund (S-15 Predicting and Assessing Natural Capital and Ecosystem Services (PANCES)) of the Ministry of the Environment, Japan.

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Correspondence to Takanori Matsui.

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Handled by Patrick O’Farrell, Council for Scientific and Industrial Research, South Africa.

Appendix

Appendix

See Tables 5 and 6.

Table 5 Other questions in the questionnaire survey
Table 6 Categories of food items

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Tatebayashi, K., Kamiyama, C., Matsui, T. et al. Accounting shadow benefits of non-market food through food-sharing networks on Hachijo Island, Japan. Sustain Sci 14, 469–486 (2019). https://doi.org/10.1007/s11625-018-0580-3

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  • DOI: https://doi.org/10.1007/s11625-018-0580-3

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