| HistoryAquaponics  adaptability to regional ecological constrains has made it resilient.  Historical evidence traces the joint use of hydroponics and aquaculture as far  back as 2000 B.C.  While the most famous  of historical uses has been among the Aztecs, Egyptians, and Chinese, many  cultures including the Japanese, Peruvians, and Greeks relied on aquaponics.  Emerging research even suggests that the hanging gardens of Babylon were  aquaponically sustained. Historically aquaponics provided agricultural solutions  for urban centers under harsh population pressures.  A brief timeline is provided below to  establish chronology:
 2000 BCChinese  developed aquaculture paired with agriculture as a husbandry method. The common  carp was the predominate species used.
 500 BC-500 AD500 BC is  the approximate date of the appearance of the monograph “The Classic of Fish  Culture”. Published in China by Fan Lai, this was the first written record of  aquaponic practice and methodology. Subsequently the practice spread through out  East Asia and even the Indian sub-continent.
 906 ADThe  suitability of other carp species discovered: silver carp, big-head carp, grass  carp, mud carp. Additionally, it was also found that when raised in  polyculture-- in the same pond, these species complement each other by eating  different types of food and staying in different environmental strata within  the pond; therefore maximizing the productivity of freshwater pond culture.
 1120 AD-1911 AD The  Chinese continue to develop and refine aquaponics: fry collection, transport  and dispersal, pond structure, rearing densities, disease control, etc.
 - (1400  AD) Aquaponics using brackish water was first practices in Indonesia, from here  it spread to the Philippines, Malaysia, Thailand, and Taiwan.  -During  this period evidence shows the presence of aquaculture in various countries:  Middle East (carp and tilapia), Japan and Korea (finfish, crustaceans,  mollusks, marine invertebrates).  Modern  Day- Latin America, Australia, New Zealand (trout and cold water species), and  the Pacific Islands (seafarming) are now developing aquaponic practices. Chronology  clearly illustrates that China was at the forefront of aquaponic practice and  development, however the use of aquaponics by the Aztecs deserve mention. The  Aztecs practiced aquaponics as far back as 1150 AD. Known as chinampas, their  method consisted of creating artificial islands from grasses and reeds that  typically measured 30 × 2.5 meters. They were created by staking  out the shallow lake bed and then fencing in the island rectangle with  wattle-and-daub.  The fenced-off area was  then layered with mud, dredged lake sediment, decaying vegetation and household  refuse until it measured 1 meter above the level of the lake. Sometimes trees  were planted at the corners to secure the chinampa. As the plants on the rafts  grew, their roots would dangle in the water. Then fertilization would take  place within the lake ecosystem, thus supporting  vegetation, algae, fish and waterfowl. Chinampas were separated by a system of channels,  creating canoe access. These "islands" produced up to seven crops a year. Within  the Aztec empire, chinampas were used at the following sites near closed water  bodies:Xochimilco, Chalco Tenochtitlán, Xaltocan, Lake  Texcoco. However, in modern times the only chinampa that remains in use  is Lake Xochimilco.  Common chinampa crops include maize, beans, squash, amaranth, tomatoes, chili  peppers, and flowers. It is estimated that food provided by chinampas  made up one-half to two-thirds of the food consumed by the city of Tenochtitlán.
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