Benthic fluxes in a subtropical reservoir estimated by pore-water diffusion calculation

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorFederal University of Acre (UFAC)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUFZ-Helmholtz Centre for Environmental Research-
Autor(es): dc.creatorFrascareli, Daniele-
Autor(es): dc.creatorCardoso-Silva, Sheila-
Autor(es): dc.creatorGontijo, Erik Sartori Jeunon-
Autor(es): dc.creatorMelo, Darllene Silveira-
Autor(es): dc.creatorMacedo, João Carlos Alves-
Autor(es): dc.creatorGuandique, Manuel Enrique Gamero-
Autor(es): dc.creatorCarlos, Viviane Moschini-
Autor(es): dc.creatorFriese, Kurt-
Autor(es): dc.creatorRosa, André Henrique-
Data de aceite: dc.date.accessioned2025-08-21T17:09:42Z-
Data de disponibilização: dc.date.available2025-08-21T17:09:42Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s11270-022-05573-1-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/223686-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/223686-
Descrição: dc.descriptionThe internal load of metals and nutrients in reservoirs can be derived from fluxes at the sediment–water interface via pore water (PW) and may affect the water quality. The main goal of this study was to investigate the distribution and fluxes of nutrients and metals at SWI in a subtropical reservoir. Sediments cores were collected at five sites in Itupararanga Reservoir and sliced at 1-cm depth intervals (2-cm from 6 cm deep). PW was extracted and analysed by its dissolved cations (Ca2+, Mg2+, Na+, K+) metals (Al, Ba, Cr, Cu, Fe, Mn, Ni e Zn), nutrient (total dissolved phosphorus, soluble reactive phosphorus-SRP; NO3; NH4+) and C content. The sediments were analysed by porosity, particle size distribution and contents of C, N and P. Fluxes at SWI were calculated using Fick's law in one dimension. P was being released to the water column at Core 5, by the mineralisation of OM by oxic pathways and retained at Core 2. Although Core 4 had high P concentration on PW, no results of flux was possible due to lack on bottom water data. No concentration of SRP was detected in PW of Core 1 and 7. Release of Fe, Mn, Zn and Cr was also observed. SRP was absent at the most eutrophic site (Core 1). The contribution of 74.83 mg m−2 SRP day−1 at Core 2 was potentially harmful to water quality. This study showed the importance of investigating sediment interstitial water and expanded a discussion in sub-climatic environments on the release and contribution of sediments in the geochemistry of P in aquatic ecosystems.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionDeutscher Akademischer Austauschdienst-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionInstitute of Science and Technology São Paulo State University (UNESP) AvenidaTrês de Marco, 511 Alto da Boa Vista, SP-
Descrição: dc.descriptionProgram in Ecology and Natural Resource Management Rodovia BR 364 Federal University of Acre (UFAC), Km 04 - Distrito Industrial, AC-
Descrição: dc.descriptionUniversity of São Paulo (USP) Oceanographic Institute. Praça Do Oceanográico, 191 - Butantã, SP-
Descrição: dc.descriptionDepartment Lake Research UFZ-Helmholtz Centre for Environmental Research, Brückstraße 3a-
Descrição: dc.descriptionInstitute of Science and Technology São Paulo State University (UNESP) AvenidaTrês de Marco, 511 Alto da Boa Vista, SP-
Descrição: dc.descriptionCNPq: 158227/2018-2-
Descrição: dc.descriptionFAPESP: 16/15397-1-
Descrição: dc.descriptionFAPESP: 18/20326-1-
Descrição: dc.descriptionDeutscher Akademischer Austauschdienst: 57414997-
Descrição: dc.descriptionCAPES: 88887.122769/2016-00-
Descrição: dc.descriptionCAPES: 88887.141964/2017-00-
Descrição: dc.descriptionCAPES: 88887.165060/2018-00-
Descrição: dc.descriptionCAPES: 99999.008107/2015-07-
Idioma: dc.languageen-
Relação: dc.relationWater, Air, and Soil Pollution-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectMetals-
Palavras-chave: dc.subjectPhosphorus release-
Palavras-chave: dc.subjectSediments-
Palavras-chave: dc.subjectSubtropical environment-
Título: dc.titleBenthic fluxes in a subtropical reservoir estimated by pore-water diffusion calculation-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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