Graduate Project
 

Evaluation of the Potential of Integrated Multi-trophic Aquaculture (IMTA) using Oyster (Crassostrea sp.) and Seaweed (Gracilaria sp.) for Shrimp (Penaeus monodon) Farms to Reduce Negative Impacts on Environment and to Improve Coastal Economy in Nusa Tenggara Barat, Indonesia

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https://ir.library.oregonstate.edu/concern/graduate_projects/0z709172n

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  • In Nusa Tenggara Barat (NTB), Indonesia, shrimp is one of the most produced seafood. It contributes to 8.74% of total Indonesian shrimp production value. In order to improve aquaculture practices including shrimp farms, Ministry of Marine and Fisheries Affair of Republic of Indonesia recently issued General Guideline for “Minapolitan” (fisheries city) Development, a concept of economic development of maritime affairs and fisheries region in which intensification of shrimp farms is one of the directions. However, it has been known that effluent from shrimp farms (particularly the intensive one) consists of accumulated nutrients (such as nitrogen) discharged to the sea and can degrade sea water quality. Integrated Multi-trophic Aquaculture (IMTA) is known as a strategy used for reducing waste from shrimp farms using biofilters. This project determines the possibility of using IMTA to improve shrimp farms in NTB, helps to document negative impacts of intensive shrimp farms, produces a recommendation for the government, and increases understanding of nitrogen dynamics in IMTA system using a mechanistic model. Data and conceptual models for modeling purpose were adopted and combined from relevant studies. Recommendations and illustrations about nitrogen dynamics provided in this paper are expected to motivate the NTB government to monitor “minapolitan” development, particularly shrimp farm practices, and to promote IMTA implementation so that the sustainability of marine ecosystem services could be pursued in the short-term and in the long-term.
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