Since seventy percent of the world\u2019s surface is covered in water, humans have realized its importance as a resource. For this reason, one of the areas heavily exploited regarding the use of water as a resource is aquaculture, especially in the production of food as opposed to using the terrestrial land.<\/p>\n
Aquaculture is the process of rearing, breeding and harvesting of aquatic species, both animals and plants, in controlled aquatic environments like the oceans, lakes, rivers, ponds and streams. It serves different purposes, including food production, restoration of threatened and\u00a0endangered species populations<\/a>, wild stock population enhancement, the building of aquariums, and fish cultures and habitat restoration<\/a>. Here are the various types of aquaculture, as well as their importance.<\/strong><\/p>\n Aquaculture<\/b> (less commonly spelled aquiculture<\/b>, also known as aquafarming<\/b>, is the controlled cultivation (“farming”) of aquatic organisms<\/a> such as fish<\/a>, crustaceans<\/a>, mollusks<\/a>, algae<\/a> and other organisms of value such as aquatic plants<\/a> (e.g. lotus<\/a>). Aquaculture involves cultivating freshwater<\/a>, brackish water<\/a> and saltwater<\/a> populations under controlled or semi-natural conditions, and can be contrasted with commercial fishing<\/a>, which is the harvesting of wild fish<\/a>.<\/sup> Mariculture<\/a>, commonly known as marine farming, refers specifically to aquaculture practiced in seawater<\/a> habitats and lagoons, opposed to in freshwater aquaculture. Pisciculture<\/a> is a type of aquaculture that consists of fish farming to obtain fish products as food<\/a>.<\/p>\n Aquaculture can be conducted in completely artificial facilities built on land (onshore aquaculture), as in the case of fish tank<\/a>, ponds<\/a>, aquaponics<\/a> or raceways<\/a>, where the living conditions rely on human control such as water quality (oxygen), feed, temperature. Alternatively, they can be conducted on well-sheltered shallow waters nearshore<\/a> of a body of water<\/a> (inshore aquaculture), where the cultivated species are subjected to a relatively more naturalistic environments; or on fenced\/enclosed sections of open water<\/a> away from the shore (offshore aquaculture), where the species are either cultured in cages, racks or bags, and are exposed to more diverse natural conditions such as water currents (such as ocean currents<\/a>), diel vertical migration<\/a> and nutrient cycles<\/a>.<\/p>\n According to the Food and Agriculture Organization<\/a> (FAO), aquaculture “is understood to mean the farming of aquatic organisms including fish, molluscs, crustaceans and aquatic plants. Farming implies some form of intervention in the rearing process<\/a> to enhance production, such as regular stocking<\/a>, feeding<\/a>, protection from predators, etc. Farming also implies individual or corporate ownership of the stock being cultivated. The reported output from global aquaculture operations in 2019 was over 120 million tonnes valued at\u00a0US$274 billion. However, there are issues about the reliability of the reported figures.<\/sup> Further, in current aquaculture practice, products from several pounds of wild fish are used to produce one pound of a piscivorous<\/a> fish like salmon<\/a>.Plant and insect-based feeds are also being developed to help reduce wild fish been used for aquaculture feed.<\/p>\n Particular kinds of aquaculture include fish farming<\/a>, shrimp farming<\/a>, oyster farming<\/a>, mariculture, pisciculture<\/a>, algaculture<\/a> (such as seaweed farming<\/a>), and the cultivation of ornamental fish<\/a>. Particular methods include aquaponics and integrated multi-trophic aquaculture<\/a>, both of which integrate fish farming and aquatic plant farming. The FAO describes aquaculture as one of the industries most directly affected by climate change and its impacts.<\/sup> Some forms of aquaculture have negative impacts on the environment, such as through nutrient pollution<\/a> or disease transfer to wild populations.<\/p>\n","protected":false},"excerpt":{"rendered":" Since seventy percent of the world\u2019s surface is covered in water, humans have realized its importance as a resource. 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