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Integrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen ponds

2020Journal article Open Access
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dc.contributor.authorGamito, Sofia
dc.contributor.authorQuental-Ferreira, H
dc.contributor.authorParejo, A
dc.contributor.authorAubin, J
dc.contributor.authorChristensen, V
dc.contributor.authorCunha, ME
dc.date.accessioned2020-12-18T10:42:45Z
dc.date.available2020-12-18T10:42:45Z
dc.date.issued2020
dc.description.abstractThree Ecopath models were built to reproduce 3 experimental treatments carried out in earthen ponds located in Olhao, southern Portugal, to understand the energy transferred and the ecosystem state in integrated multi-trophic aquaculture (IMTA). 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 Argyrosomus regius, white seabream Diplodus sargus, flathead grey mullet Mugil cephalus, Japanese oyster Crassostrea gigas and sea lettuce Ultra 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.pt_PT
dc.description.sponsorshipCOFASP/0003/2015 Interreg Atlantic Area project INTEGRATE EAPA_232/2016 project DIVERSIAQUA Mar2020 16-02-01-FMP-0066 UID/Multi/04326/2019/UID/Multi/04326/2020pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3354/aei00375pt_PT
dc.identifier.issn1869-215X
dc.identifier.urihttp://hdl.handle.net/10400.1/14919
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherInter Researchpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectIntegrated multi-trophic aquaculture systemspt_PT
dc.subjectSustainable aquaculturept_PT
dc.subjectIMTApt_PT
dc.subjectEcopath modelspt_PT
dc.subjectEarthen pond ecosystemspt_PT
dc.subjectEcosystem energy transferpt_PT
dc.titleIntegrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen pondspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage470pt_PT
oaire.citation.startPage457pt_PT
oaire.citation.titleAquaculture Environment Interactionspt_PT
oaire.citation.volume12pt_PT
person.familyNameGamito
person.givenNameSofia
person.identifier534295
person.identifier.ciencia-id751A-DA6E-C7A2
person.identifier.orcid0000-0001-9700-7388
person.identifier.ridM-3476-2013
person.identifier.scopus-author-id56003796400
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication88ad20ee-e1ec-447d-b1d2-e63f94638ac9
relation.isAuthorOfPublication.latestForDiscovery88ad20ee-e1ec-447d-b1d2-e63f94638ac9

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