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Merging anchovy eggs abundance into a hydrodynamic model as an assessment tool for estuarine ecohydrological management

2012Journal article Restricted access
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dc.contributor.authorMorais, P.
dc.contributor.authorMartins, Flávio Augusto Bastos da Cruz
dc.contributor.authorChicharo, Maria Alexandra Teodosio
dc.contributor.authorLopes, J.
dc.contributor.authorChícharo, Luís
dc.date.accessioned2013-02-22T13:53:32Z
dc.date.available2013-02-22T13:53:32Z
dc.date.issued2012
dc.date.updated2013-02-19T14:36:05Z
dc.description.abstractThe impoundment of rivers by large dams is the biggest direct anthropogenic impact on the hydrological cycle. However, dams can help solving eutrophication in estuaries by controlling flow pulses, which in turn might enhance the advection of fish larval stages from their spawning and nursery areas. Thus, this work aimed to merge data on the abundance of anchovy eggs with MOHID hydrodynamic model for the Guadiana estu ary, allowing dam/basin managers to set river discharge scenarios that might mitigate/prevent eutrophication, without compromising the presence of fish larval stages inside the estuary. Data on anchovy larval stages were assessed in the Guadiana estuary and adjacent coast and three simulation setups were developed. In Simulation A, anchovy eggs abundance was merged in the hydrodynamic model to compare the outputs with data on the abundance, distribution and development stage of anchovy eggs and larvae. In Simulation B, lagrangian particles were incorporated in the model to determine the percentage of particles released from the upper, middle and lower estuary that remain in the estuary along 10 days, in two tidal situations and in seven river discharge scenarios. In Simulation C, the abundance of anchovy eggs was merged in the model to select the discharge scenario(s) that do not compromise the presence of anchovy larval stages in the estuary. Results confirmed the spawning and nursery areas of anchovy and showed that scenarios B (Qmax¼20m3 s 1) and C (Qmax¼50m3 s 1) should be applied during neap tides. The choice between scenarios depends on the degree of eutrophication, the effectiveness of an inexistent monitoring program and on plankton response experiments to flushing and increased nutrient loading. This work produced an easy-to-use management tool for Guadiana managers, serving as an example to other estuarine sites around the world. Ultimately, this work suggests that river flow management must be guided by robust ecological studies, under an adequate sociological framework and adopting sustainable economic principles to maintain and improve the ecosystem services.por
dc.identifier.citationMorais, P.; Martins, F.; Chicharo, M. A.; Lopes, J.; Chicharo, L. M. Z. Merging anchovy eggs abundance into a hydrodynamic model as an assessment tool for estuarine ecohydrological management, River Research and Applications, 28, 2, 160-176, 2012.por
dc.identifier.issn1535-1459
dc.identifier.otherAUT: FMA00440;JLO01039;MCH00377;
dc.identifier.urihttp://hdl.handle.net/10400.1/2395
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectEcohydrologypor
dc.subjectFlow pulsespor
dc.subjectFish eggspor
dc.subjectEstuarine managementpor
dc.subjectGuadianapor
dc.subjectEstuarypor
dc.titleMerging anchovy eggs abundance into a hydrodynamic model as an assessment tool for estuarine ecohydrological managementpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage176por
oaire.citation.issue2por
oaire.citation.startPage160por
oaire.citation.titleRiver Research and Applicationspor
oaire.citation.volume28por
person.familyNameMorais
person.familyNameMartins
person.familyNameTeodosio
person.familyNameChicharo
person.givenNamePedro
person.givenNameFlávio
person.givenNameMaria
person.givenNameLuis
person.identifier424141
person.identifier.ciencia-id1A19-7E90-8BDD
person.identifier.ciencia-id6711-E990-FFD9
person.identifier.ciencia-idAF10-647B-65FB
person.identifier.ciencia-id6716-EE1C-B995
person.identifier.orcid0000-0002-0861-5566
person.identifier.orcid0000-0002-9863-6255
person.identifier.orcid0000-0002-0939-9885
person.identifier.orcid0000-0002-4933-2300
person.identifier.ridF-2815-2011
person.identifier.ridU-2673-2018
person.identifier.ridB-5077-2013
person.identifier.scopus-author-id7005946306
person.identifier.scopus-author-id7006504350
person.identifier.scopus-author-id56196396700
person.identifier.scopus-author-id6602881426
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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relation.isAuthorOfPublication.latestForDiscovery1a3bc5b3-6032-43b3-880e-1a551ba84d02

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