Influence of environmental drivers on the plankton distribution on the inner shelf off Ubatuba, southeastern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2022 |
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-21102022-103027/ |
Resumo: | With the general objective of evaluating the spatiotemporal distribution of plankton under different environmental conditions, governed by physical processes, on the inner shelf off Ubatuba (SP), Brazil, considering more detailed vertical and spatial resolutions, three independent studies were carried out. These studies are presented throughout this thesis in the form of scientific articles, in chapters II to IV. In chapter II, the occurrence of thin layers of phytoplankton and their temporal evolution were investigated over two days of observations in February/2019. Chapter III analyzed seasonal (winter/summer) and short-term variation (hours) in the plankton abundance and distribution and their relationship with hydrodynamic conditions, based on observations carried out in July/2018 and January/2019. In chapter IV the influence of environmental conditions on the abundance and vertical and horizontal distributions of the Synechococcus, Prochlorococcus, picoeukaryotes, and nanoeukaryotes populations was evaluated, comparing different scenarios obtained in December/2018 and January/2019. Overall, the data collection relied on field observation techniques at fixed and spatial stations, continuous high-resolution profilings with optical and acoustic sensors, in addition to discrete sample collection for analysis in laboratory. The abundance of the main plankton groups, from autotrophic microorganisms to mesozooplankton, was estimated using an in situ imaging system and flow cytometry (pico-nanoplankton). The general results suggest that the wind is the primary forcing of the variability in the plankton abundance and vertical and horizontal distribution in the coastal zone of Ubatuba, driving submesoscale phenomena related to the intrusion and retreat of the South Atlantic Central Water along the inner shelf and vertical mixing processes in events of change in the wind pattern, especially when associated with frontal systems. The present thesis makes an original contribution to the knowledge about the influence of physical processes on plankton distribution in high spatio-temporal resolution in a subtropical coastal ecosystem. |
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Influence of environmental drivers on the plankton distribution on the inner shelf off Ubatuba, southeastern BrazilInfluência de fatores ambientais na distribuição do plâncton na plataforma interna de Ubatuba, BrasilAcoplamento físico-biológicoCamadas finasDistribuição do plânctonImageamento do plânctonPhysical-biological couplingPlankton distributionPlankton imagingRegião costeira de UbatubaSpatiotemporal variabilityThin layersUbatuba coastal regionVariação espaço-temporalWith the general objective of evaluating the spatiotemporal distribution of plankton under different environmental conditions, governed by physical processes, on the inner shelf off Ubatuba (SP), Brazil, considering more detailed vertical and spatial resolutions, three independent studies were carried out. These studies are presented throughout this thesis in the form of scientific articles, in chapters II to IV. In chapter II, the occurrence of thin layers of phytoplankton and their temporal evolution were investigated over two days of observations in February/2019. Chapter III analyzed seasonal (winter/summer) and short-term variation (hours) in the plankton abundance and distribution and their relationship with hydrodynamic conditions, based on observations carried out in July/2018 and January/2019. In chapter IV the influence of environmental conditions on the abundance and vertical and horizontal distributions of the Synechococcus, Prochlorococcus, picoeukaryotes, and nanoeukaryotes populations was evaluated, comparing different scenarios obtained in December/2018 and January/2019. Overall, the data collection relied on field observation techniques at fixed and spatial stations, continuous high-resolution profilings with optical and acoustic sensors, in addition to discrete sample collection for analysis in laboratory. The abundance of the main plankton groups, from autotrophic microorganisms to mesozooplankton, was estimated using an in situ imaging system and flow cytometry (pico-nanoplankton). The general results suggest that the wind is the primary forcing of the variability in the plankton abundance and vertical and horizontal distribution in the coastal zone of Ubatuba, driving submesoscale phenomena related to the intrusion and retreat of the South Atlantic Central Water along the inner shelf and vertical mixing processes in events of change in the wind pattern, especially when associated with frontal systems. The present thesis makes an original contribution to the knowledge about the influence of physical processes on plankton distribution in high spatio-temporal resolution in a subtropical coastal ecosystem.Com o objetivo geral de avaliar a distribuição espaço-temporal do plâncton em diferentes condições ambientais, governadas por processos físicos, na plataforma interna de Ubatuba (SP), considerando resoluções verticais e espaciais detalhadas, foram conduzidos três estudos independentes, que são apresentados ao longo desta tese na forma de artigos científicos, nos capítulos II a IV. No capítulo II, a ocorrência de camadas finas de fitoplâncton e sua evolução temporal foram investigadas ao longo de dois dias de observações em fevereiro/2019. No capítulo III foram analisadas as variações sazonais (entre inverno e verão) e de curto prazo (horas) na abundância e distribuição do plâncton e sua relação com condições hidrodinâmicas, a partir de observações realizadas em julho/2018 e janeiro/2019. No capítulo IV avaliou-se a influência das condições ambientais na abundância e distribuição vertical e horizontal das populações de Synechococcus, Prochlorococcus, pico- e nanoeucariotos, comparando diferentes cenários obtidos em dezembro/2018 e janeiro/2019. No geral, o levantamento de dados contou com técnicas de observação em campo em estações fixas e espaciais, perfilagens contínuas com sensores ópticos e acústicos de alta-resolução, além de coletas discretas de amostras para análise em laboratório. A abundância dos principais grupos que compõem o plâncton, de microrganismos autotróficos ao mesozooplâncton, foi estimada usando um sistema de imageamento in situ e citometria de fluxo (pico-nanoplâncton). Os resultados gerais sugerem que o vento é a principal forçante das variabilidades na abundância e distribuição vertical e horizontal do plâncton na zona costeira de Ubatuba, impulsionando fenômenos de submesoscala relacionados à intrusão e retração da Água Central do Atlântico Sul ao longo da plataforma interna, e processos de mistura vertical em eventos de mudança no padrão dos ventos, principalmente quando associados a sistemas frontais. A presente tese traz uma contribuição original ao conhecimento sobre a influência de processos físicos na distribuição do plâncton em alta resolução espaço-temporal em um ecossistema costeiro subtropical.Biblioteca Digitais de Teses e Dissertações da USPLopes, Rubens MendesPenninck, Silvana Simone Batista2022-08-17info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfhttps://www.teses.usp.br/teses/disponiveis/21/21134/tde-21102022-103027/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/openAccesseng2023-01-18T17:44:27Zoai:teses.usp.br:tde-21102022-103027Biblioteca 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:27212023-01-18T17:44:27Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Influence of environmental drivers on the plankton distribution on the inner shelf off Ubatuba, southeastern Brazil Influência de fatores ambientais na distribuição do plâncton na plataforma interna de Ubatuba, Brasil |
title |
Influence of environmental drivers on the plankton distribution on the inner shelf off Ubatuba, southeastern Brazil |
spellingShingle |
Influence of environmental drivers on the plankton distribution on the inner shelf off Ubatuba, southeastern Brazil Penninck, Silvana Simone Batista Acoplamento físico-biológico Camadas finas Distribuição do plâncton Imageamento do plâncton Physical-biological coupling Plankton distribution Plankton imaging Região costeira de Ubatuba Spatiotemporal variability Thin layers Ubatuba coastal region Variação espaço-temporal |
title_short |
Influence of environmental drivers on the plankton distribution on the inner shelf off Ubatuba, southeastern Brazil |
title_full |
Influence of environmental drivers on the plankton distribution on the inner shelf off Ubatuba, southeastern Brazil |
title_fullStr |
Influence of environmental drivers on the plankton distribution on the inner shelf off Ubatuba, southeastern Brazil |
title_full_unstemmed |
Influence of environmental drivers on the plankton distribution on the inner shelf off Ubatuba, southeastern Brazil |
title_sort |
Influence of environmental drivers on the plankton distribution on the inner shelf off Ubatuba, southeastern Brazil |
author |
Penninck, Silvana Simone Batista |
author_facet |
Penninck, Silvana Simone Batista |
author_role |
author |
dc.contributor.none.fl_str_mv |
Lopes, Rubens Mendes |
dc.contributor.author.fl_str_mv |
Penninck, Silvana Simone Batista |
dc.subject.por.fl_str_mv |
Acoplamento físico-biológico Camadas finas Distribuição do plâncton Imageamento do plâncton Physical-biological coupling Plankton distribution Plankton imaging Região costeira de Ubatuba Spatiotemporal variability Thin layers Ubatuba coastal region Variação espaço-temporal |
topic |
Acoplamento físico-biológico Camadas finas Distribuição do plâncton Imageamento do plâncton Physical-biological coupling Plankton distribution Plankton imaging Região costeira de Ubatuba Spatiotemporal variability Thin layers Ubatuba coastal region Variação espaço-temporal |
description |
With the general objective of evaluating the spatiotemporal distribution of plankton under different environmental conditions, governed by physical processes, on the inner shelf off Ubatuba (SP), Brazil, considering more detailed vertical and spatial resolutions, three independent studies were carried out. These studies are presented throughout this thesis in the form of scientific articles, in chapters II to IV. In chapter II, the occurrence of thin layers of phytoplankton and their temporal evolution were investigated over two days of observations in February/2019. Chapter III analyzed seasonal (winter/summer) and short-term variation (hours) in the plankton abundance and distribution and their relationship with hydrodynamic conditions, based on observations carried out in July/2018 and January/2019. In chapter IV the influence of environmental conditions on the abundance and vertical and horizontal distributions of the Synechococcus, Prochlorococcus, picoeukaryotes, and nanoeukaryotes populations was evaluated, comparing different scenarios obtained in December/2018 and January/2019. Overall, the data collection relied on field observation techniques at fixed and spatial stations, continuous high-resolution profilings with optical and acoustic sensors, in addition to discrete sample collection for analysis in laboratory. The abundance of the main plankton groups, from autotrophic microorganisms to mesozooplankton, was estimated using an in situ imaging system and flow cytometry (pico-nanoplankton). The general results suggest that the wind is the primary forcing of the variability in the plankton abundance and vertical and horizontal distribution in the coastal zone of Ubatuba, driving submesoscale phenomena related to the intrusion and retreat of the South Atlantic Central Water along the inner shelf and vertical mixing processes in events of change in the wind pattern, especially when associated with frontal systems. The present thesis makes an original contribution to the knowledge about the influence of physical processes on plankton distribution in high spatio-temporal resolution in a subtropical coastal ecosystem. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-08-17 |
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-21102022-103027/ |
url |
https://www.teses.usp.br/teses/disponiveis/21/21134/tde-21102022-103027/ |
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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1809090969747849216 |