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Effects of biological and environmental factors on the variability of Paralonchurus brasiliensis (Sciaenidae) density: An GAMLSS application

2022Journal article Open access
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dc.contributor.authorCosta, Eudriano
dc.contributor.authorTeixeira, Gustavo M.
dc.contributor.authorFreire, Fúlvio A. M.
dc.contributor.authorDias, June F.
dc.contributor.authorFransozo, Adilson
dc.date.accessioned2022-10-29T09:13:56Z
dc.date.available2022-10-29T09:13:56Z
dc.date.issued2022
dc.description.abstractThe hypothesis of this study was based on the premise that complex interactions between biological and environmental factors may explain variability in fish population dynamics. To test this, Paralonchurus brasiliensis (Sciaenidae), a keystone species associated with coastal waters, was used as a model fish species. Generalized Additive Models for Location, Scale and Shape were performed to evaluate relationships among biological and environmental variables. Fish biomass, repletion index (RI), hepatosomatic index (HSI), condition factor (K) and sex ratio was in models as biological factors whereas water temperature, salinity, organic matter, grain size and depth were included as environmental variables. The results revealed significant effects of biological and abiotic factors on population density of P. brasiliensis. The selected model explained 94% of the variability in the explanatory variables. Fish biomass, HSI and K were the most important biological factors, whereas temperature and organic matter were the most important abiotic factors. Variability in fish density suggests that HSI and K both could be used as an additional ecosystem indicator of environmental status (food availability) and fish population health. We also highlight the importance of using robust and flexible statistical methods to model fish population dynamics and the need to incorporate biological and environmental factors into fishery resource management.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.seares.2022.102203pt_PT
dc.identifier.issn1385-1101
dc.identifier.urihttp://hdl.handle.net/10400.1/18466
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectDemersal fishpt_PT
dc.subjectPopulation dynamicspt_PT
dc.subjectHabitat conditionpt_PT
dc.subjectAtlantic Oceanpt_PT
dc.titleEffects of biological and environmental factors on the variability of Paralonchurus brasiliensis (Sciaenidae) density: An GAMLSS applicationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage102203pt_PT
oaire.citation.titleJournal of Sea Researchpt_PT
oaire.citation.volume183pt_PT
person.familyNameFlorêncio dos Santos Costa
person.givenNameEudriano
person.identifierhttps://scholar.google.com.br/citations?user=wbemx7IAAAAJ&hl=pt-BR
person.identifier.ciencia-id051E-530F-6366
person.identifier.orcid0000-0002-8139-2135
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication60d23489-c913-4f78-ba31-2c4792a918f9
relation.isAuthorOfPublication.latestForDiscovery60d23489-c913-4f78-ba31-2c4792a918f9

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