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Environmental factors in the spatial variability of demersal fish in a subtropical estuary and adjacent continental shelf

dc.contributoren-US
dc.creatorCardoso, Olímpio Rafael
dc.creatorCattani, André Pereira
dc.creatorSantos, Lilyane de Oliveira
dc.creatorContente, Riguel Feltrin
dc.creatorSpach, Henry Louis
dc.date2023-02-28
dc.date.accessioned2023-03-08T17:25:51Z
dc.date.available2023-03-08T17:25:51Z
dc.identifierhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol51-issue1-fulltext-2956
dc.identifier10.3856/vol51-issue1-fulltext-2956
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/222722
dc.descriptionQuarterly collections of demersal fish were conducted between 2014 and 2018 on the adjacent continental shelf and in the Paranaguá Estuarine Complex (PEC). Univariate and multivariate statistical analyses were used to determine the abundance, richness, and composition of demersal fish assemblages and to list predictor variables responsible for the variability in these ecological descriptors by applying generalized linear models. The collected specimens of demersal fish (n = 25,179) were distributed across 19 orders, 31 families, and 72 species. Fish richness was explained by the following predictor variables: the percentage of fine sand in the sediment, the richness of the benthic megafauna, and sampling sites. The abundance was associated with the predictor variables of the percentage of very fine sand in the sediment, percentage of silt in the sediment, salinity, and sampling sites. Canonical correspondence analysis showed that the fish assemblage composition was strongly associated with the salinity gradient and positively correlated with benthic megafaunal species richness. As it is one of the last remnants of the Atlantic Forest, declared by UNESCO as a Natural Heritage of Humanity, the patterns observed in this study will support PEC's coastal management of current developmental demands, particularly related to port activities.en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherPontificia Universidad Católica de Valparaísoen-US
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol51-issue1-fulltext-2956/1676
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol51-issue1-fulltext-2956/2376
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol51-issue1-fulltext-2956/2377
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol51-issue1-fulltext-2956/2378
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol51-issue1-fulltext-2956/2379
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol51-issue1-fulltext-2956/2380
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol51-issue1-fulltext-2956/2381
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol51-issue1-fulltext-2956/2382
dc.rightsCopyright (c) 2023 Latin American Journal of Aquatic Researchen-US
dc.sourceLatin American Journal of Aquatic Research; Vol 51, No 1 (2023); 117-132en-US
dc.sourcePlataforma para envío de artículos - Latin American Journal of Aquatic Research; Vol 51, No 1 (2023); 117-132es-ES
dc.source0718-560X
dc.source0718-560X
dc.subjectdemersal fish fauna; ecosystem; generalized linear models; Paranaguá Estuary; Brazilen-US
dc.titleEnvironmental factors in the spatial variability of demersal fish in a subtropical estuary and adjacent continental shelfen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeen-US
dc.typees-ES


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