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Abstract

Interest is increasing in Integrated Multi-Trophic Aquaculture Systems (IMTA) that encourage the development of environmentally friendly practices. By combining fed aquaculture with nearby extractive aquaculture, an IMTA can minimize the negative ecological impacts of conventional monoculture farms while expanding their economic base. To evaluate the efficiency of such a system, we applied dynamic STELLA modeling based on nitrogen content. The application of seaweed co-culturing reduced the level of dissolved inorganic nitrogen (DIN) by 20 to 35% over the short term whereas DIN values declined annually by 68 to 88%. When sea cucumber was incorporated into the scheme, the amount of particulate organic nitrogen was decreased by up to 50%. Ultimately, we plan to introduce potential strategic guidelines for IMTA implementation that might improve management and predictive capabilities while enhancing the social acceptability of such a system.

Keywords

IMTA; Modeling; Nitrogen; Seaweed

Article Details

Author Biographies

Cicilia Kambey, Pusan National University

Department of Oceanography

Ik Kyo Chung, Pusan National University

Department of Oceanography

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