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Seafood is Canada's single largest exported food commodity, exporting 85% of production, making Canada the seventh largest seafood exporter in the world. [7] In 1986, Canadian aquaculture production amounted to only 10,488 tonnes, valued at $35 million, [ 8 ] and then in 2009 it had a value of $800 million, 69% of which was exported.
Aquaculture, which is the farming of fish, shellfish, and aquatic plants in fresh or salt water, is the fastest growing food production activity in the world and a growing sector in Canada. In 2015, aquaculture generated over $1 billion in GDP and close to $3 billion in total economic activity. [2]
"Multi-trophic" means that the various species occupy different trophic levels, i.e., different (but adjacent) links in the food chain. [ 2 ] IMTA is a specialized form of the age-old practice of aquatic polyculture , which was the co-culture of various species, often without regard to trophic level.
A relatively new concept is relationship farming. This is a way of operating farms so they restore the food chain in their area. Re-establishing a healthy food chain can result in the farm automatically filtering out impurities from feed water and air, feeding its own food chain, and additionally producing high net yields for harvesting.
Aquaponics is a food production system that couples aquaculture (raising aquatic animals such as fish, crayfish, snails or prawns in tanks) with hydroponics (cultivating plants in water) whereby the nutrient-rich aquaculture water is fed to hydroponically grown plants.
Utilization of aquatic organisms (e.g., phytoplankton, zooplankton, and fish) are an important part of constructing natural food chains within closed ecological systems. [ 6 ] Construction of a Spirulina to fish food chain opens up the possibility of recirculating aquaculture systems in areas where there may be scarcity or absence of suitable ...
In 2016, the greatest part of the 12 percent used for non-food purposes (about 20 million tonnes) was reduced to fishmeal and fish oil (74 percent or 15 million tonnes), while the rest (5 million tonnes) was largely utilized as material for direct feeding in aquaculture and raising of livestock and fur animals, in culture (e.g. fry, fingerlings ...
An integrated aquaculture system consists of a number of species at different trophic levels of the food chain. Thus waste generating (fed organisms) such as fish and shrimp are coupled with extractive organisms such as abalone, sponges or sea urchins, as a mechanism of removing excess nutrient matter from the water column.