Tidal variability of water quality parameters in a mesotidal estuary (Sado Estuary, Portugal)

Abstract To establish effective water quality monitoring strategies in estuaries, it is imperative to identify and understand the main drivers for the variation of water quality parameters. The tidal effect is an important factor of the daily and fortnightly variability in several estuaries. However...

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Autores principales:	Ângela Nascimento, Beatriz Biguino, Carlos Borges, Rui Cereja, Joana P. C. Cruz, Fátima Sousa, Joaquim Dias, Vanda Brotas, Carla Palma, Ana C. Brito
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/22de79c7c72b44538970232ef90648ce
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spelling	oai:doaj.org-article:22de79c7c72b44538970232ef90648ce2021-12-05T12:13:04ZTidal variability of water quality parameters in a mesotidal estuary (Sado Estuary, Portugal)10.1038/s41598-021-02603-62045-2322https://doaj.org/article/22de79c7c72b44538970232ef90648ce2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02603-6https://doaj.org/toc/2045-2322Abstract To establish effective water quality monitoring strategies in estuaries, it is imperative to identify and understand the main drivers for the variation of water quality parameters. The tidal effect is an important factor of the daily and fortnightly variability in several estuaries. However, the extent of that influence on the different physicochemical and biological parameters is still overlooked in some estuarine systems, such as the Sado Estuary, a mesotidal estuary located on the west coast of Portugal. The main objective of this study was to determine how the water quality parameters of the Sado Estuary varied with the fortnightly and the semidiurnal tidal variation. To achieve this goal, sampling campaigns were conducted in May/18, Nov/18 and Jun/19, under neap and spring tidal conditions, with data collection over the tidal cycle. Results were observed to be significantly influenced by the tidal variation, in a large area of the estuary. Flood seemed to mitigate possible effects of nutrient enrichment in the water column. Additionally, significant differences were also observed when considering the different sampling stations. Temperature, Suspended Particulate Matter (SPM) and nutrients showed the highest values at low water. Lastly, the implications of the tidal variability in the evaluation of the water quality according to Water Framework Directive were also discussed, highlighting the importance of studying short-time scale variations and the worst-case scenario to ensure water quality is maintained. These findings are relevant for the implementation of regional management plans and to promote sustainable development.Ângela NascimentoBeatriz BiguinoCarlos BorgesRui CerejaJoana P. C. CruzFátima SousaJoaquim DiasVanda BrotasCarla PalmaAna C. BritoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-17 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ângela Nascimento Beatriz Biguino Carlos Borges Rui Cereja Joana P. C. Cruz Fátima Sousa Joaquim Dias Vanda Brotas Carla Palma Ana C. Brito Tidal variability of water quality parameters in a mesotidal estuary (Sado Estuary, Portugal)
description	Abstract To establish effective water quality monitoring strategies in estuaries, it is imperative to identify and understand the main drivers for the variation of water quality parameters. The tidal effect is an important factor of the daily and fortnightly variability in several estuaries. However, the extent of that influence on the different physicochemical and biological parameters is still overlooked in some estuarine systems, such as the Sado Estuary, a mesotidal estuary located on the west coast of Portugal. The main objective of this study was to determine how the water quality parameters of the Sado Estuary varied with the fortnightly and the semidiurnal tidal variation. To achieve this goal, sampling campaigns were conducted in May/18, Nov/18 and Jun/19, under neap and spring tidal conditions, with data collection over the tidal cycle. Results were observed to be significantly influenced by the tidal variation, in a large area of the estuary. Flood seemed to mitigate possible effects of nutrient enrichment in the water column. Additionally, significant differences were also observed when considering the different sampling stations. Temperature, Suspended Particulate Matter (SPM) and nutrients showed the highest values at low water. Lastly, the implications of the tidal variability in the evaluation of the water quality according to Water Framework Directive were also discussed, highlighting the importance of studying short-time scale variations and the worst-case scenario to ensure water quality is maintained. These findings are relevant for the implementation of regional management plans and to promote sustainable development.
format	article
author	Ângela Nascimento Beatriz Biguino Carlos Borges Rui Cereja Joana P. C. Cruz Fátima Sousa Joaquim Dias Vanda Brotas Carla Palma Ana C. Brito
author_facet	Ângela Nascimento Beatriz Biguino Carlos Borges Rui Cereja Joana P. C. Cruz Fátima Sousa Joaquim Dias Vanda Brotas Carla Palma Ana C. Brito
author_sort	Ângela Nascimento
title	Tidal variability of water quality parameters in a mesotidal estuary (Sado Estuary, Portugal)
title_short	Tidal variability of water quality parameters in a mesotidal estuary (Sado Estuary, Portugal)
title_full	Tidal variability of water quality parameters in a mesotidal estuary (Sado Estuary, Portugal)
title_fullStr	Tidal variability of water quality parameters in a mesotidal estuary (Sado Estuary, Portugal)
title_full_unstemmed	Tidal variability of water quality parameters in a mesotidal estuary (Sado Estuary, Portugal)
title_sort	tidal variability of water quality parameters in a mesotidal estuary (sado estuary, portugal)
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/22de79c7c72b44538970232ef90648ce
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Tidal variability of water quality parameters in a mesotidal estuary (Sado Estuary, Portugal)

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