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Fig. 3
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Variations in quantity and unit price of seeded clams in the culture area in 1988–2014 (a), and relationship between density of wild juveniles and annual summed weight of seeded clams (b), which could be divided into three periods: A) 1988–1990; B) 1991–2007; and C) 2008–2014. Records of seeding in 2004 were unavailable.
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