Increasing South Pacific aquaculture with complete ecosystems
Laucala Bay, adjacent to the USP Suva campus, is an example of a polluted area from a large coastal urban population and industrial activity plus past over-fishing, which has resulted in damaged fisheries. Candidate species for fisheries restoration include: giant clams, oysters, mussels, other native edible bivalves, crabs, shrimps, sea cucumbers, sea urchins, sponges, herbivore finfish, filter-feeding finfish, predatory finfish, and more. Supporting species needed to improve ecosystem yield include: seaweeds, seagrass, mangroves, epiphytes and many tiny sea creatures. Our calculations suggest that a 1 km2 area of increased substrate and planted species (in the 30 km2 bay) will yield more than 10,000 tons/year of healthy seafood after a few years of establishing the ecosystem and managing the nutrient flows and species populations.