No-take marine reserves and illegal ﬁshing under imperfect enforcement
Satoshi Yamazaki (),
Eriko Hoshino and
Budy Resosudarmo ()
Australian Journal of Agricultural and Resource Economics, 2015, vol. 59, issue 3
No-take marine reserves have been increasingly advocated as an eﬀective means of supporting marine ecosystems and conserving ﬁsheries resources. A major problem that can hinder the eﬀectiveness of no-take reserves is the incidence of illegal ﬁshing, which has created signiﬁcant ecological and economic losses in global ﬁsheries. We construct a bioeconomic model to explore the connection between the eﬀects of notake reserves and illegal ﬁshing activities in relation to the level of regulatory control of illegal activities in the reserve and ﬁshed areas. Our parameterised model shows that the eﬀects of no-take reserves on both the extent of illegal ﬁshing and the ﬁsh biomass critically depend on illegal ﬁshing regulations and the scale and patterns of ﬁsh dispersal. In a ﬁshery where illegal ﬁshing can only be partially controlled, increasing the size of the no-take reserve may result in a lose-lose situation in which the level of illegal ﬁshing eﬀort increases and the total biomass decreases. Our results further show that when the pattern of ﬁsh dispersal is density dependent, imposing a stricter control on illegal ﬁshing in either reserves or ﬁshed areas increases the aggregate level of illegal ﬁshing.
Keywords: Environmental; Economics; and; Policy (search for similar items in EconPapers)
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Persistent link: https://EconPapers.repec.org/RePEc:ags:aareaj:283209
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