Past environmental changes: using sedimentary photosynthetic pigments to enhance subtropical reservoir management

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorValencia University-
Autor(es): dc.creatorCardoso-Silva, Sheila-
Autor(es): dc.creatorMizael, Juliana Soares Silva-
Autor(es): dc.creatorFrascareli, Daniele-
Autor(es): dc.creatorde Lima Ferreira, Paulo Alves-
Autor(es): dc.creatorFigueira, Rubens César Lopes-
Autor(es): dc.creatorPompêo, Marcelo-
Autor(es): dc.creatorVicente, Eduardo-
Autor(es): dc.creatorMoschini-Carlos, Viviane-
Data de aceite: dc.date.accessioned2025-08-21T22:30:01Z-
Data de disponibilização: dc.date.available2025-08-21T22:30:01Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s11356-024-32574-w-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/306265-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/306265-
Descrição: dc.descriptionThe historical impacts of eutrophication processes were investigated in six subtropical reservoirs (São Paulo, Brazil) using a paleolimnological approach. We questioned whether the levels of pigment indicators of algal biomass could provide information about trophic increase and whether carotenoid pigments could offer additional insights. The following proxies were employed: organic matter, total phosphorus, total nitrogen, photosynthetic pigments (by high-performance liquid chromatography), sedimentation rates, and geochronology (by 210 Pb technique). Principal component analysis indicated a gradient of eutrophication. In eutrophic reservoirs (e.g., Rio Grande and Salto Grande), levels of lutein and zeaxanthin increased over time, suggesting growth of Chlorophyta and Cyanobacteria. These pigments were significantly associated with algal biomass, reflecting their participation in phytoplankton composition. In mesotrophic reservoirs, Broa and Itupararanga, increases and significative linear correlations (r > 0.70) between pigments and nutrients are mainly linked to agricultural and urban activities. In the oligotrophic reservoir Igaratá, lower pigment and nutrient levels reflected lesser human impact and good water quality. This study underscores eutrophication's complexity across subtropical reservoirs. Photosynthetic pigments associated with specific algal groups were informative, especially when correlated with nutrient data. The trophic increase, notably in the 1990s, may have been influenced by neoliberal policies. Integrated pigment and geochemical analysis offers a more precise understanding of eutrophication changes and their ties to human factors. Such research can aid environmental monitoring and sustainable policy development.-
Descrição: dc.descriptionEnvironmental Sciences Program Institute of Science and Technology State University of Sao Paulo (UNESP), SP-
Descrição: dc.descriptionOceanographic Institute University of São Paulo (USP), SP-
Descrição: dc.descriptionEcology Department Biosciences Institute University of São Paulo (USP), SP-
Descrição: dc.descriptionMicrobiology and Ecology Department Valencia University, Valencia-
Descrição: dc.descriptionEnvironmental Sciences Program Institute of Science and Technology State University of Sao Paulo (UNESP), SP-
Formato: dc.format22994-23010-
Idioma: dc.languageen-
Relação: dc.relationEnvironmental Science and Pollution Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectChlorophyll-a-
Palavras-chave: dc.subjectEutrophication-
Palavras-chave: dc.subjectLutein-
Palavras-chave: dc.subjectNutrients-
Palavras-chave: dc.subjectSediments-
Palavras-chave: dc.subjectZeaxanthin-
Título: dc.titlePast environmental changes: using sedimentary photosynthetic pigments to enhance subtropical reservoir management-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.