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Modeling trophic webs in freshwater fishpond systems using Ecopath: towards better polyculture management

2021Journal article Open access
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dc.contributor.authorAubin, J
dc.contributor.authorBaizeau, V
dc.contributor.authorJaeger, C
dc.contributor.authorRoucaute, M
dc.contributor.authorGamito, Sofia
dc.date.accessioned2021-11-05T14:29:08Z
dc.date.available2021-11-05T14:29:08Z
dc.date.issued2021
dc.description.abstractFreshwater pond polyculture faces many challenges in Europe. Appropriate tools must be developed to better understand and manage trophic interactions in pond ecosystems. The objective of our study was to understand the trophic interactions and make inference on the fish diet in common carp polyculture through a combination of experiments and trophic web modeling. We conducted an experiment in small fishponds of common carp polyculture reared with roach and perch and used Ecopath with Ecosim software to characterize the food web. Two replicates of 3 treatments were performed: a semi-extensive pond with low fish density and no formulated feed, an intensive pond with twice the fish density and formulated feed and an intensive pond coupled with a planted lagoon. Ten trophic groups were defined to describe the food web. The modeling procedure enabled us to estimate the diets of each trophic group. The fish diet in fed and non-fed treatments differed greatly since the carp fed mainly on formulated feed when available. The roach exhibited trophic plasticity by adapting their diet to the available resources. The benthic macroinvertebrates and zooplankton were preyed upon intensively; they became the limiting factors for fish production and depended on phytoplankton availability. Detritus and phytoplankton were the main sources of nutrients in all treatments but were not used efficiently. These results provide several insights for improving polyculture. In particular, they promote better management of zooplankton and macroinvertebrates as food sources for target species and a better balance in fish assemblages for more efficient use of resources.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3354/aei00406pt_PT
dc.identifier.eissn1869-7534
dc.identifier.urihttp://hdl.handle.net/10400.1/17290
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherInter-reseachpt_PT
dc.relationAlgarve Centre for Marine Sciences
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectFood webpt_PT
dc.subjectPond aquaculturept_PT
dc.subjectEcological modelingpt_PT
dc.subjectEcopath with Ecosimpt_PT
dc.subjectCommon carppt_PT
dc.titleModeling trophic webs in freshwater fishpond systems using Ecopath: towards better polyculture managementpt_PT
dc.title.alternativeModelagem de teias tróficas em sistemas de fishpond de água doce usando Ecopath: para um melhor manejo da policulturapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.citation.endPage322pt_PT
oaire.citation.startPage311pt_PT
oaire.citation.titleAquaculture Environment Interactionspt_PT
oaire.citation.volume13pt_PT
oaire.fundingStream6817 - DCRRNI ID
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
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication88ad20ee-e1ec-447d-b1d2-e63f94638ac9
relation.isAuthorOfPublication.latestForDiscovery88ad20ee-e1ec-447d-b1d2-e63f94638ac9
relation.isProjectOfPublicationfafa76a6-2cd2-4a6d-a3c9-772f34d3b91f
relation.isProjectOfPublication.latestForDiscoveryfafa76a6-2cd2-4a6d-a3c9-772f34d3b91f

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