The Influence of Periphyton Biofilm on Phosphorus Migration in Sediments

Yi, Zhiyong; Yang, Ying; Yan, Chunxiao; Pei, Guofeng

doi:10.1007/s41742-019-00182-z

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…Talvez se o experimento tivesse sido continuado, os tanques com sedimento poderiam ter se mantido produtivos. Como sugestões para futuros trabalhos recomenda-se monitorar o sistema por maior período, bem como avaliar a produção de perifíton sobre o sedimento (epipelon), que tem sido apontado como importante fator na manutenção das baixas concentrações de fósforo na água (CANO; CASCO;CLAPS, 2016;ZHAO et al, 2019;YI et al, 2019) e monitorar os índices de oxigênio dissolvido, visto que os índices de oxigenação nos tanques podem ser responsáveis pela retenção do fósforo no sedimento ou sua liberação para a coluna d'água, conforme reportado em estudos recentes (HORPILLA, 2019;LIU et al, 2020).…”

Section: Methodsunclassified

Influência do sedimento na autofertilização por fósforo total em mesocosmos simulando a fitorremediação de ambiente aquático eutrofizado

Ferreira

Jesus²

2022

Rev. Bras. de Cien., Tec. e Inov.

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A fim de restaurar um ecossistema aquático eutrofizado, é essencial eliminar as fontes externas de nutrientes. Além disso, o compartimento sedimento pode estocar grandes quantidades de nutrientes, os quais podem ser liberados para a coluna d’água e manter o ecossistema eutrofizado por muito tempo, mesmo após a eliminação das fontes externas de nutrientes. Nesse sentido, o presente estudo teve como objetivo avaliar, em mesocosmos, a influência do sedimento em autofertilizar um ambiente aquático com fósforo e sua consequência no retardamento da recuperação deste ambiente caso fosse empregada uma técnica de fitorremediação com Eichhornia crassipes. O estudo foi conduzido em mesocosmos de fundo fechado utilizando água, macrófitas e sedimento de reservatório hipereutrófico (Lago das Garças, São Paulo, SP). Foram avaliados dois tipos de sistemas: com e sem sedimento. O estudo foi realizado em triplicata, totalizando seis mesocosmos de 500 L cada. Foram realizadas 8 campanhas de monitoramento entre fev. e jun./2017. Foram determinados os seguintes parâmetros de qualidade da água: pH, condutividade elétrica, turbidez, cor aparente e fósforo total. Foi realizado o manejo das plantas a fim de manter apenas a metade da superfície livre colonizada e permitir a reprodução e o crescimento das plantas. Apesar de ambos os sistemas terem apresentado tendência de diminuição dos teores de fósforo total na água, notou-se que o sistema com sedimento apresentou maior reprodução dos indivíduos de E. crassipes, sugerindo a influência do sedimento na autofertilização do sistema. Assim, é importante considerar o sedimento na restauração de ambientes eutrofizados.

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Section: Methodsunclassified

Influência do sedimento na autofertilização por fósforo total em mesocosmos simulando a fitorremediação de ambiente aquático eutrofizado

Ferreira

Jesus²

2022

Rev. Bras. de Cien., Tec. e Inov.

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“…By studying the growth and nutrient removal of periphyton in a shallow, eutrophic lake, Ma, Chen, Lu, and Liao (2019) determined the nutrient removal capacity per unit area of periphyton is 1.23 × 10 −5 g total N m −2 day −1 and 2.46 × 10 −5 g total P m −2 day −1 . Yi, Yang, Yan, and Pei (2019) observed periphyton (by its absorption, filtration, and precipitation of nutrients) acting as biological buffers for nutrient cycling, with periphyton's extent of influence closely related to sediment nutrient levels. They determined periphyton's average daily total N removal rates were 52% and 25% in pond and lake microcosms, respectively, and average daily total P removal rates were 1.06% and 20.9% in pond and lake microcosms, respectively.…”

Section: Algaementioning

confidence: 99%

Substratum‐associated microbiota

Furey

Lee

Clemans

2020

Water Environment Research

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Highlights of new, interesting, and emerging research findings on substratum-associated microbiota covered from a survey of 2019 literature from primarily freshwaters provide insight into research trends of interest to the Water Environment Federation and others interested in benthic, aquatic environments. Coverage of topics on bottom-associated or attached algae and cyanobacteria, though not comprehensive, includes new methods, taxa new-to-science, nutrient dynamics, auto-and heterotrophic interactions, grazers, bioassessment, herbicides and other pollutants, metal contaminants, and nuisance, and bloom-forming and harmful algae. Coverage of bacteria, also not comprehensive, focuses on the ecology of benthic biofilms and microbial communities, along with the ecology of microbes like Caulobacter crescentus, Rhodobacter, and other freshwater microbial species. Bacterial topics covered also include metagenomics and metatranscriptomics, toxins and pollutants, bacterial pathogens and bacteriophages, and bacterial physiology. Readers may use this literature review to learn about or renew their interest in the recent advances and discoveries regarding substratum-associated microbiota. © 2020 Water Environment Federation • Practitioner points • This review of literature from 2019 on substratum-associated microbiota presents highlights of findings on algae, cyanobacteria, and bacteria from primarily freshwaters. • Coverage of algae and cyanobacteria includes findings on new methods, taxa new to science, nutrient dynamics, auto-and heterotrophic interactions, grazers, bioassessment, herbicides and other pollutants, metal contaminants, and nuisance, bloomforming and harmful algae. • Coverage of bacteria includes findings on ecology of benthic biofilms and microbial communities, the ecology of microbes, metagenomics and metatranscriptomics, toxins and pollutants, bacterial pathogens and bacteriophages, and bacterial physiology. • Highlights of new, noteworthy and emerging topics build on those from 2018 and will be of relevance to the Water Environment Federation and others interested in benthic, aquatic environments

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“…Monitoring of P content in water and sediment is essential to control and avoid eutrophication of the coastal aquatic environment. Most of the P in the current natural environment is present in particulate form and is not biologically available, thereby limiting primary production (Yi et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Vertical Distribution of Phosphorous Fractions and Bioavailability of the Nutrient in the Southern Indian Ocean

et al. 2022

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The study evaluated concentration, vertical distribution, and bioavailability of phosphorus fractions in the Indian Ocean core sediments. Sediment samples were collected from two sites in the Indian Ocean during January–February 2010 using gravity corer. Phosphorus fractions in sediments were analyzed by a modified sequential extraction procedure (SEDEX). The vertical profile revealed silt and clay as dominant grain size fractions in both cores. The enriched levels of organic carbon were observed in samples due to adsorption on fine grained sediments. Loosely bound P was the most dominant fraction, and its higher concentration in sediments was due to increased productivity and subsequent inputs of biogenic components. Detritus from marine organisms and lower oxygen concentrations (depleted Eh values) enhanced the production of authigenic P. The lower iron bound P fraction at specific depths was attributed to the nature of Fe minerals present within sediments. Decreased level of organic phosphate fraction was due to mineralization. The presence of Detrital P, the diagenetically stable form of P, might be due to inputs from the Himalayan, peninsular Indian, and Sri Lankan regions. The biogenic form was the dominant phosphate fraction throughout the cores suggesting the dissolution of fish debris. Estimated bioavailable phosphorous (BAP) ranged from 82.2 to 98.7% in Core I and from 90.21 to 92.98% in Core II, suggesting the fact that a major portion of the phosphate was bioavailable and hence the alterations in environmental conditions can release the BAP to water column resulting in nutrient enrichment. Graphical Abstract

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The Influence of Periphyton Biofilm on Phosphorus Migration in Sediments

Cited by 5 publications

References 25 publications

Influência do sedimento na autofertilização por fósforo total em mesocosmos simulando a fitorremediação de ambiente aquático eutrofizado

Influência do sedimento na autofertilização por fósforo total em mesocosmos simulando a fitorremediação de ambiente aquático eutrofizado

Substratum‐associated microbiota

Vertical Distribution of Phosphorous Fractions and Bioavailability of the Nutrient in the Southern Indian Ocean

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