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Impact assessment of non-indigenous jellyfish species on the estuarine community dynamic: a model of medusa phase

2017-03Journal article Restricted access
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dc.contributor.authorMuha, Teja Petra
dc.contributor.authorTeodosio, Maria
dc.contributor.authorBen-Hamadou, Radhouan
dc.date.accessioned2019-11-20T15:07:44Z
dc.date.available2019-11-20T15:07:44Z
dc.date.issued2017-03
dc.description.abstractNon-indigenous jellyfish species (NIJS) Blackforida virginica have recently been introduced to the Guadiana Estuary. A modelling approach was used for the assessment of the species-specific impact on the native community, during the medusa phase. The novel interactions between NIJS and the native community are assessed through biomass variation including hydrodynamic and climatic variables. Sensitivity analysis shows that both native species, as well as NIJS highly depend on the water discharge regime, nutrient contribution and the amount of detritus production. Abiotic factors such as the Northern Atlantic Oscillation, water discharge, nutrient load and detritus production are the most influential factors for the dynamics of the estuarine ecosystem demonstrated by the model. Low water discharge and low nutrient retention rate appear to be the most favourable conditions for B. virginica. The species is a non-selective predator able to integrate into the system effectively and has caused a decrease in the biomass of other organisms in the estuarine ecosystem throughout the summer after dam removal. The B. virginica significant impact can be evaluated only when the jellyfish detritus food pathway is involved. The B. virginica predatory impact potential, as well as food preference, appears to be the most influential factors for the overall biomass variation. On the contrary, winter freshwater pulses reduce the survival rate of jellyfish polyps which results in a decrease of medusa during summer. The model presents a strong ecohydrology movement where the fluctuation of organism biomass strongly depends on the hydrological conditions including the amount of nutrient load.
dc.description.sponsorshipINTERREG project "Development and harmonization of new indicators, methodologies and strategies common for Portugal and Spain for the application of the Water Frame Directive to transitional and coastal water mass in the Guadiana" [0252_DIMEAGUA_5_P]
dc.description.sponsorshipproject "Towards an integrated approach to enhance predictive accuracy of jellyfish impact on coastal marine ecosystems- Jellyfisheries" [FEDER 16772]
dc.description.sponsorshipFoundation for Science and Technology (FCT, Portugal [SFRH/BSAB/113684/2015]
dc.description.sponsorshipEuropean Regional Development Fund (COMPETE program- Operational Competitiveness Programme)
dc.identifier.doi10.1016/j.ecss.2016.10.040
dc.identifier.issn0272-7714
dc.identifier.urihttp://hdl.handle.net/10400.1/13189
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.subjectSan Francisco Estuary
dc.subjectBlackfordia-Virginica
dc.subjectChesapeake Bay
dc.subjectBlack Sea
dc.subjectAbundance
dc.subjectScyphomedusae
dc.subjectFish
dc.subjectEcosystems
dc.subjectCnidaria
dc.subjectEcology
dc.subjectBlackfordia virginica
dc.subjectModel
dc.subjectWater flow discharge
dc.subjectAlien jellyfish species
dc.subjectMedusa phase
dc.titleImpact assessment of non-indigenous jellyfish species on the estuarine community dynamic: a model of medusa phase
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F04326%2F2013/PT
oaire.citation.endPage259
oaire.citation.startPage249
oaire.citation.titleEstuarine Coastal and Shelf Science
oaire.citation.volume187
oaire.fundingStream5876
person.familyNameMuha
person.familyNameTeodosio
person.familyNameBen-Hamadou
person.givenNameTeja Petra
person.givenNameMaria
person.givenNameRadhouan
person.identifier.ciencia-idAF10-647B-65FB
person.identifier.orcid0000-0002-6364-2751
person.identifier.orcid0000-0002-0939-9885
person.identifier.orcid0000-0003-2686-5822
person.identifier.ridB-5077-2013
person.identifier.ridF-8192-2011
person.identifier.scopus-author-id54080233100
person.identifier.scopus-author-id56196396700
person.identifier.scopus-author-id15764751100
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccess
rcaap.typearticle
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relation.isAuthorOfPublicationb39b2d6d-d6f5-4130-a9b9-4e7624d44676
relation.isAuthorOfPublication2f32d19a-b0ef-4021-a7da-e67ce80fb319
relation.isAuthorOfPublication.latestForDiscovery2f32d19a-b0ef-4021-a7da-e67ce80fb319
relation.isProjectOfPublication868b4818-3efa-4edb-9202-c464d64fd38f
relation.isProjectOfPublication.latestForDiscovery868b4818-3efa-4edb-9202-c464d64fd38f

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