Micropollutants in the deep sea: influence of feeding mode on microplastic intake by benthic organisms and detection of persistent organic pollutants in biological and sediment samples
Autor(a) principal: | |
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Data de Publicação: | 2024 |
Tipo de documento: | Tese |
Idioma: | eng |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da USP |
Texto Completo: | https://www.teses.usp.br/teses/disponiveis/21/21134/tde-01042024-110419/ |
Resumo: | The deep sea has been known as the last marine environment to face the impacts of human action. Recent studies, carried out predominantly in the northern hemisphere, have found marine debris and chemical pollutants in the fauna, sediments and water column of this ecosystem which is the largest on Earth. Considering ongoing efforts to document deep-sea pollution in the southern hemisphere, the first chapter in this thesis shows that microplastics have been present in the benthic community of Antarctica since the 1980s, presenting here the earliest record of microplastics in the continent, originating from invertebrates deposited in biological collections. Levels of contamination are similar in specimens which were recently sampled or were originally caught at shallower depths, which could indicate a consistent entry of microplastics in Antarctica for at least the past four decades. In the second chapter, this work presents the first record of microplastics and persistent organic pollutants in a deep-sea benthic community and in the surrounding sediment in the Southwestern Atlantic, within the Santos Basin. In both chapters, organisms feeding off organic matter deposited in surface sediments had the highest ingestion values, both regarding number of particles and ingestion frequency, indicating the role of this feeding mode in the concentration of environmental pollutants. |
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Micropollutants in the deep sea: influence of feeding mode on microplastic intake by benthic organisms and detection of persistent organic pollutants in biological and sediment samplesMicropoluentes no mar profundo: influência do modo alimentar na ingestão de microplásticos em organismos bentônicos e detecção de poluentes orgânicos persistentes em amostras biológicas e de sedimentoDeposit-feedingDetritivoriaOceano Atlântico SudoesteOceano AustralPolímeros sintéticosPOPsPOPsSouthern OceanSouthwest Atlantic OceanSynthetic polymersThe deep sea has been known as the last marine environment to face the impacts of human action. Recent studies, carried out predominantly in the northern hemisphere, have found marine debris and chemical pollutants in the fauna, sediments and water column of this ecosystem which is the largest on Earth. Considering ongoing efforts to document deep-sea pollution in the southern hemisphere, the first chapter in this thesis shows that microplastics have been present in the benthic community of Antarctica since the 1980s, presenting here the earliest record of microplastics in the continent, originating from invertebrates deposited in biological collections. Levels of contamination are similar in specimens which were recently sampled or were originally caught at shallower depths, which could indicate a consistent entry of microplastics in Antarctica for at least the past four decades. In the second chapter, this work presents the first record of microplastics and persistent organic pollutants in a deep-sea benthic community and in the surrounding sediment in the Southwestern Atlantic, within the Santos Basin. In both chapters, organisms feeding off organic matter deposited in surface sediments had the highest ingestion values, both regarding number of particles and ingestion frequency, indicating the role of this feeding mode in the concentration of environmental pollutants.O mar profundo já foi considerado a última fronteira para a chegada dos impactos antrópicos no oceano. Estudos recentes, realizados sobretudo no hemisfério norte, já constatam lixo marinho e poluentes químicos em organismos, no sedimento e na coluna dágua desse que é o maior ecossistema do planeta. Considerando os esforços recentes para documentar a poluição oceânica de profundidade no hemisfério sul, o primeiro capítulo deste trabalho mostra que plásticos já estavam presentes na comunidade bentônica do continente Antártico ainda na década de 1980, sendo apresentado aqui o registro mais antigo de microplásticos no continente, proveniente de invertebrados depositados em coleções biológicas. Os níveis de contaminação são similares aos obtidos em estudos que analisaram amostras mais recentes e em profundidades mais rasas, possivelmente indicando uma entrada consistente de microplásticos há pelo menos quatro décadas na região. Já no segundo capítulo, este trabalho relata o primeiro registro de microplásticos e poluentes orgânicos persistentes em uma comunidade bentônica de invertebrados de profundidade e no sedimento associado no Atlântico Sudoeste, especificamente na Bacia de Santos. Em ambos os capítulos, organismos que se alimentam da matéria orgânica depositada sobre o sedimento foram os que mais ingeriram microplásticos tanto em quantidade de partículas quanto em termos de frequência de ingestão, indicando o papel dessa guilda como concentradora de poluentes ambientais.Biblioteca Digitais de Teses e Dissertações da USPSumida, Paulo Yukio GomesSilva, Gabriel Stefanelli2024-02-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfhttps://www.teses.usp.br/teses/disponiveis/21/21134/tde-01042024-110419/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2024-04-01T17:44:02Zoai:teses.usp.br:tde-01042024-110419Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212024-04-01T17:44:02Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Micropollutants in the deep sea: influence of feeding mode on microplastic intake by benthic organisms and detection of persistent organic pollutants in biological and sediment samples Micropoluentes no mar profundo: influência do modo alimentar na ingestão de microplásticos em organismos bentônicos e detecção de poluentes orgânicos persistentes em amostras biológicas e de sedimento |
title |
Micropollutants in the deep sea: influence of feeding mode on microplastic intake by benthic organisms and detection of persistent organic pollutants in biological and sediment samples |
spellingShingle |
Micropollutants in the deep sea: influence of feeding mode on microplastic intake by benthic organisms and detection of persistent organic pollutants in biological and sediment samples Silva, Gabriel Stefanelli Deposit-feeding Detritivoria Oceano Atlântico Sudoeste Oceano Austral Polímeros sintéticos POPs POPs Southern Ocean Southwest Atlantic Ocean Synthetic polymers |
title_short |
Micropollutants in the deep sea: influence of feeding mode on microplastic intake by benthic organisms and detection of persistent organic pollutants in biological and sediment samples |
title_full |
Micropollutants in the deep sea: influence of feeding mode on microplastic intake by benthic organisms and detection of persistent organic pollutants in biological and sediment samples |
title_fullStr |
Micropollutants in the deep sea: influence of feeding mode on microplastic intake by benthic organisms and detection of persistent organic pollutants in biological and sediment samples |
title_full_unstemmed |
Micropollutants in the deep sea: influence of feeding mode on microplastic intake by benthic organisms and detection of persistent organic pollutants in biological and sediment samples |
title_sort |
Micropollutants in the deep sea: influence of feeding mode on microplastic intake by benthic organisms and detection of persistent organic pollutants in biological and sediment samples |
author |
Silva, Gabriel Stefanelli |
author_facet |
Silva, Gabriel Stefanelli |
author_role |
author |
dc.contributor.none.fl_str_mv |
Sumida, Paulo Yukio Gomes |
dc.contributor.author.fl_str_mv |
Silva, Gabriel Stefanelli |
dc.subject.por.fl_str_mv |
Deposit-feeding Detritivoria Oceano Atlântico Sudoeste Oceano Austral Polímeros sintéticos POPs POPs Southern Ocean Southwest Atlantic Ocean Synthetic polymers |
topic |
Deposit-feeding Detritivoria Oceano Atlântico Sudoeste Oceano Austral Polímeros sintéticos POPs POPs Southern Ocean Southwest Atlantic Ocean Synthetic polymers |
description |
The deep sea has been known as the last marine environment to face the impacts of human action. Recent studies, carried out predominantly in the northern hemisphere, have found marine debris and chemical pollutants in the fauna, sediments and water column of this ecosystem which is the largest on Earth. Considering ongoing efforts to document deep-sea pollution in the southern hemisphere, the first chapter in this thesis shows that microplastics have been present in the benthic community of Antarctica since the 1980s, presenting here the earliest record of microplastics in the continent, originating from invertebrates deposited in biological collections. Levels of contamination are similar in specimens which were recently sampled or were originally caught at shallower depths, which could indicate a consistent entry of microplastics in Antarctica for at least the past four decades. In the second chapter, this work presents the first record of microplastics and persistent organic pollutants in a deep-sea benthic community and in the surrounding sediment in the Southwestern Atlantic, within the Santos Basin. In both chapters, organisms feeding off organic matter deposited in surface sediments had the highest ingestion values, both regarding number of particles and ingestion frequency, indicating the role of this feeding mode in the concentration of environmental pollutants. |
publishDate |
2024 |
dc.date.none.fl_str_mv |
2024-02-05 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.teses.usp.br/teses/disponiveis/21/21134/tde-01042024-110419/ |
url |
https://www.teses.usp.br/teses/disponiveis/21/21134/tde-01042024-110419/ |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
|
dc.rights.driver.fl_str_mv |
Liberar o conteúdo para acesso público. info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Liberar o conteúdo para acesso público. |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
|
dc.publisher.none.fl_str_mv |
Biblioteca Digitais de Teses e Dissertações da USP |
publisher.none.fl_str_mv |
Biblioteca Digitais de Teses e Dissertações da USP |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações da USP instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Biblioteca Digital de Teses e Dissertações da USP |
collection |
Biblioteca Digital de Teses e Dissertações da USP |
repository.name.fl_str_mv |
Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
virginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.br |
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1809090272787693568 |