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These earthen ponds behave as simplified ecosystems or mesocosms, with well-defined borders, where the relationships between trophic groups can be described through ecosystem modeling. Different combinations of species were produced in these ponds, corresponding to the 3 treatments: (1) fish, oysters and macroalgae (FOM); (2) fish and oysters (FO); and (3) fish and macroalgae (FM). The managed species were meagre <jats:italic>Argyrosomus regius<\/jats:italic>, white seabream <jats:italic>Diplodus sargus<\/jats:italic>, flathead grey mullet <jats:italic>Mugil cephalus<\/jats:italic>, Japanese oyster <jats:italic>Crassostrea gigas<\/jats:italic> and sea lettuce <jats:italic>Ulva<\/jats:italic> spp. The results showed that the total amount of energy throughput was 15 to 17 times higher when compared with an equivalent naturalized system. The high biomass and low recycling indicated an immature system with low resilience and low stability that demands high rates of water renewal and aeration to maintain good water-quality levels for finfish production. The addition of oysters and macroalgae in the FOM treatment appeared to improve the water quality, since oysters controlled the excess of phytoplankton produced in the ponds by ingesting a fair amount of the phytoplankton, while the macroalgae helped in the absorption of excess nutrients and created a habitat for periphyton and associated macroinvertebrates. Some ecosystem attributes of the FOM ponds approached the values of the naturalized model, suggesting a possible path towards more sustainable aquaculture.<\/jats:p>","DOI":"10.3354\/aei00375","type":"journal-article","created":{"date-parts":[[2020,9,3]],"date-time":"2020-09-03T07:08:07Z","timestamp":1599116887000},"page":"457-470","update-policy":"https:\/\/doi.org\/10.3354\/policy","source":"Crossref","is-referenced-by-count":17,"title":["Integrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen ponds"],"prefix":"10.3354","volume":"12","author":[{"given":"S","family":"Gamito","sequence":"first","affiliation":[{"name":"CCMAR, Centre of Marine Sciences, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal"},{"name":"FCT, Faculdade de Ci\u00eancias e Tecnologia, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal"}]},{"given":"H","family":"Quental-Ferreira","sequence":"additional","affiliation":[{"name":"EPPO, Esta\u00e7\u00e3o Piloto de Piscicultura de Olh\u00e3o, Instituto Portugu\u00eas do Mar e da Atmosfera, Quinta de Marim, 8700-194 Olh\u00e3o, Portugal"}]},{"given":"A","family":"Parejo","sequence":"additional","affiliation":[{"name":"EPPO, Esta\u00e7\u00e3o Piloto de Piscicultura de Olh\u00e3o, Instituto Portugu\u00eas do Mar e da Atmosfera, Quinta de Marim, 8700-194 Olh\u00e3o, Portugal"}]},{"given":"J","family":"Aubin","sequence":"additional","affiliation":[{"name":"INRA UMR SAS, 35042 Rennes Cedex, France"}]},{"given":"V","family":"Christensen","sequence":"additional","affiliation":[{"name":"Institute for the Oceans and Fisheries, University of British Columbia, Vancouver, BC V6T 1Z4, Canada"}]},{"given":"ME","family":"Cunha","sequence":"additional","affiliation":[{"name":"EPPO, Esta\u00e7\u00e3o Piloto de Piscicultura de Olh\u00e3o, Instituto Portugu\u00eas do Mar e da Atmosfera, Quinta de Marim, 8700-194 Olh\u00e3o, Portugal"}]}],"member":"1913","reference":[{"key":"Ref1","unstructured":"Anras L, Boglione C, Cataudella S, Dinis MT and others (2010) The current status of extensive and semi-intensive aquaculture practices in Southern Europe. 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