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Spatial and temporal variations of Cockle (Cerastoderma spp.) populations in two portuguese estuarine systems with low directed fishing pressure

2022Journal article Open access
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dc.contributor.authorSantos, Cátia
dc.contributor.authorCabral, Sara
dc.contributor.authorCarvalho, Frederico
dc.contributor.authorSousa, António
dc.contributor.authorGoulding, Thomas
dc.contributor.authorRamajal, João
dc.contributor.authorMedeiros, João Paulo
dc.contributor.authorSilva, Gilda
dc.contributor.authorAngélico, Maria Manuel
dc.contributor.authorGaspar, Miguel
dc.contributor.authorBrito, Ana C.
dc.contributor.authorCosta, José Lino
dc.contributor.authorChainho, Paula
dc.date.accessioned2022-09-30T10:05:29Z
dc.date.available2022-09-30T10:05:29Z
dc.date.issued2022
dc.description.abstractCockles are amongst the most exploited bivalve species in Portugal, playing an important ecological and socioeconomic role in coastal ecosystems. Two sympatric species of cockles, Cerastoderma edule (Linnaeus, 1758) and Cerastoderma glaucum (Bruguiere, 1789-1792) may co-occur in estuaries and coastal lagoons in mixed populations along the European Atlantic coast, namely in Portugal, France and the United Kingdom. The increasing importance of shellfish harvesting in Portugal requires a good knowledge of cockle stocks and temporal variability in stock levels to better inform sustainable management practices. Therefore, this study aimed at assessing spatial and temporal variations in cockle populations in two Portuguese estuarine systems where the species are exploited at low levels. Sampling was carried out using a clam dredge, covering the entire potential area of occurrence of cockles in the Tagus and Sado estuaries at around the same time of the year in each of the three sampling years (2015, 2018, and 2019). The abundance, spatial distribution and population structure of cockles were examined at each system. Moreover, several water and sediment parameters were measured to understand the influence of environmental conditions on the spatial distribution and abundance of cockles. The results obtained showed that cockles occur mostly in the intermediate areas of both estuarine systems and are more abundant in the Tagus estuary. Depth, average sediment grain size and the species Ruditapes philippinarum were the factors that better explained the probability of species occurrence. The population structure analysis indicated that natural mortality is constraining the cockle communities given the low abundance of adult individuals with marketable size in both estuaries. This study highlights the need for appropriate management measures to ensure the sustainability of these bivalve population stocks that have significant socioeconomic importance for local populations.pt_PT
dc.description.sponsorshipMAR-02.01.01-FEAMP-0051; MAR-01.03.02-FEAMP-0013
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3389/fmars.2022.699622pt_PT
dc.identifier.eissn2296-7745
dc.identifier.urihttp://hdl.handle.net/10400.1/18321
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherFrontiers Mediapt_PT
dc.relationMarine and Environmental Sciences Centre
dc.relationChanges in Ecosystem Services with the introduction of marine invasive species
dc.relationAssessment of impacts of marine non-indigenous species
dc.relationThe Portuguese clam fishery: Future Impact of Hybrids and Ocean Acidification to Coastal Communities
dc.relationPortuguese Coastal Monitoring Network
dc.relationLined Plunge Pools - Experimental and Numerical Analysis of Plunge Pool Spillways with Emphasis on Slabs Stability and Scale Effects
dc.relationNot Available
dc.relationImpacts od biological invasions on fisheries and aquaculture
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSpatial distributionpt_PT
dc.subjectEnvironmental factorspt_PT
dc.subjectPopulation structurept_PT
dc.subjectTagus estuarypt_PT
dc.subjectSado estuarypt_PT
dc.subjectPortugalpt_PT
dc.titleSpatial and temporal variations of Cockle (Cerastoderma spp.) populations in two portuguese estuarine systems with low directed fishing pressurept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardTitleChanges in Ecosystem Services with the introduction of marine invasive species
oaire.awardTitleAssessment of impacts of marine non-indigenous species
oaire.awardTitleThe Portuguese clam fishery: Future Impact of Hybrids and Ocean Acidification to Coastal Communities
oaire.awardTitlePortuguese Coastal Monitoring Network
oaire.awardTitleLined Plunge Pools - Experimental and Numerical Analysis of Plunge Pool Spillways with Emphasis on Slabs Stability and Scale Effects
oaire.awardTitleNot Available
oaire.awardTitleImpacts od biological invasions on fisheries and aquaculture
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04292%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/2020.06325.BD/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F145746%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//2020.05001.BD/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9444 - RNIIIE/PINFRA%2F22128%2F2016/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//PD%2FBD%2F114458%2F2016/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F00095%2F2017%2FCP1387%2FCT0038/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 3ed/2020.01797.CEECIND%2FCP1595%2FCT0002/PT
oaire.citation.titleFrontiers in Marine Sciencept_PT
oaire.citation.volume9pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamOE
oaire.fundingStream9444 - RNIIIE
oaire.fundingStreamCEEC IND 2017
oaire.fundingStreamCEEC IND 3ed
person.familyNameGaspar
person.givenNameMiguel
person.identifier.ciencia-idF719-07AC-E41F
person.identifier.orcid0000-0001-9245-8518
person.identifier.ridF-5398-2011
person.identifier.scopus-author-id23501123500
project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.nameFundação para a Ciência e a Tecnologia
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project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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