Comparison of structural changes in the agriculture and fisheries industries before and after the Great East Japan Earthquake: a case study of Iwate Prefecture’s coastal area

This study categorised the fishery districts in Iwate Prefecture, which were severely damaged by the Great East Japan Earthquake, using data on agriculture and fishery. Subsequently, changes in the industrial structure of coastal rural areas before and after the earthquake were clarified through an...

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Bibliographic Details
Published in:Fisheries science 2022-03, Vol.88 (2), p.345-361
Main Authors: Nakamura, Momoka, Hattori, Toshihiro, Kariya, Miku
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Cluster analysis
Coastal structures
Coastal zone
Earthquake damage
Earthquakes
Fish & Wildlife Biology & Management
Fisheries
Fishery data
Fishery industry
Food Science
Freshwater & Marine Ecology
Industry
Life Sciences
Original Article
Population decline
Population density
Rural areas
Seismic activity
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Summary:This study categorised the fishery districts in Iwate Prefecture, which were severely damaged by the Great East Japan Earthquake, using data on agriculture and fishery. Subsequently, changes in the industrial structure of coastal rural areas before and after the earthquake were clarified through an examination of both agriculture and fisheries at the same time. Using cluster analysis, district categories were classified into three cluster types (small-scale primary industry, large-scale primary industry and fishery-dominated clusters) before the earthquake and a fourth cluster (the three aforementioned clusters plus high population density clusters) after the earthquake. The industrial structure’s most significant change was in fishery-dominated clusters before the earthquake. After the earthquake, clusters with the characteristics of a high population density and small industries emerged. The change in the degree of population decline indicates that the loss of population has not accelerated in the districts where agriculture and fishery have been rebuilt in a balanced manner, although the scale may be either small or large. This finding suggests that both agriculture and fishery are important in coastal rural areas, just as the two were before the earthquake.
ISSN:0919-9268
1444-2906
DOI:10.1007/s12562-021-01579-6