Aquaculture in the Ecosystem

pp 251-269

Aquaculture in the Coastal Zone: Pressures, Interactions and Externalities

  • David WhitmarshAffiliated withCEMARE, University of Portsmouth, Burnaby Terrace
  • , Maria Giovanna PalmieriAffiliated withCEMARE, University of Portsmouth, Burnaby Terrace

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This chapter focusses on the way aquaculture interacts with other users of the coastal zone, and specifically the side effects (externalities) of these interactions. The DPSIR (Driving forces — Pressure — State — Impact — Response) paradigm is used here to explore the externalities problem and to suggest policy solutions. Two aspects of the problem are considered, on the one hand those externalities generated by coastal zone activities that affect aquaculture, and on the other those originating from aquaculture itself. Monetary valuation is one way to assess externalities, and an example is provided for shrimp farming in mangroves (see appendix). The benefits and risks of different strategies for policy solutions based on assessments of externalities are discussed.


Socio-economic indicators externalities market failure non-marketed goods property rights