Variability of nutrients and chlorophyll a in Ancão Inlet during a spring tidal cycle in April 2009

São Luis or Ancão Inlet is the most western of the six inlets of the Ria Formosa lagoon, in southern Portugal. This inlet contributes relatively little to the water volume exchange over a tidal cycle (~10%). Temperature, salinity, pH, dissolved oxygen, and chlorophyll a and nutrient concentrations w...

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Autores principales:	Alcântara, P, Cravo, A, Jacob, J
Formato:	info:eu-repo/semantics/article
Idioma:	eng
Publicado:	Iniversidad Autónoma de Baja California 2011
Materias:	coastal lagoon Ria Formosa Ancão Inlet nutrients chlorophyll a transports laguna costera Ría Formosa bocana de Ancão nutrientes clorofila a transportes
Acceso en liña:	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1780
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id	repositorioinstitucional-20.500.12930-7435
record_format	dspace
spelling	repositorioinstitucional-20.500.12930-74352023-05-09T14:30:51Z Variability of nutrients and chlorophyll a in Ancão Inlet during a spring tidal cycle in April 2009 Variabilidad de nutrientes y clorofila a en la bocana de Ancão durante un ciclo de mareas vivas en abril de 2009 Alcântara, P Cravo, A Jacob, J coastal lagoon Ria Formosa Ancão Inlet nutrients chlorophyll a transports laguna costera Ría Formosa bocana de Ancão nutrientes clorofila a transportes São Luis or Ancão Inlet is the most western of the six inlets of the Ria Formosa lagoon, in southern Portugal. This inlet contributes relatively little to the water volume exchange over a tidal cycle (~10%). Temperature, salinity, pH, dissolved oxygen, and chlorophyll a and nutrient concentrations were measured hourly at the surface, at an intermediate level, and near the bottom over a complete spring tidal cycle, at a sampling point in the middle of the inlet. Current velocity was also measured hourly over the entire cross-section of the inlet using an acoustic Doppler current meter. From these parameters, the flow rate and the transport of nutrients and chlorophyll a were calculated and integrated over the complete tidal cycle providing the net transport. The results show that this is a well-mixed dynamic inlet where, during spring tide, the tidal signal is evident particularly for the nutrient and chlorophyll a concentrations. The nutrient concentrations were low (almost depleted), while the chlorophyll a concentrations were high (4–6 mg m–3). The estimated transports through Ancão Inlet revealed that there was a net import of chlorophyll a, nitrate, and phosphate to the Ria Formosa lagoon, while silicate was exported to the adjacent coastal area.  La bocana de São Luis o de Ancão es la más occidental de las seis bocanas de la laguna de Ría Formosa, en el sur de Portugal. Esta bocana contribuye relativamente poco al intercambio del volumen de agua durante un ciclo mareal (~10%). La temperatura, la salinidad, el pH, el oxígeno disuelto y la concentración de clorofila a y de nutrientes se midieron cada hora durante un ciclo completo de mareas vivas, en la superficie, en un nivel intermedio y cerca del fondo, desde un punto central en medio de la bocana. La velocidad de las corrientes también se midió cada hora en toda la sección transversal de la bocana con un perfilador acústico Doppler. A partir de estos parámetros, la velocidad del flujo y el transporte de nutrientes y de clorofila a se calcularon e integraron a lo largo del ciclo mareal para obtener el transporte neto. Los resultados muestran que ésta es una bocana dinámica y bien mezclada, donde la señal de las mareas vivas es evidente sobre todo en el caso de las concentraciones de nutrientes y clorofila a. Las concentraciones de nutrientes fueron bajas (casi agotadas), mientras que las de clorofila a fueron altas (4–6 mg m–3). Los transportes estimados indicaron que hubo una importación neta de clorofila a, nitrato y fosfato a la laguna, y una exportación de silicato a la zona costera adyacente. 2011-04-26 2021-06-03T03:55:18Z 2021-06-03T03:55:18Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1780 10.7773/cm.v38i1B.1780 https://hdl.handle.net/20.500.12930/7435 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1780/1663 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 38 No. 1B (2012); 161-176 Ciencias Marinas; Vol. 38 Núm. 1B (2012); 161-176 2395-9053 0185-3880
institution	Repositorio Institucional
collection	DSpace
language	eng
topic	coastal lagoon Ria Formosa Ancão Inlet nutrients chlorophyll a transports laguna costera Ría Formosa bocana de Ancão nutrientes clorofila a transportes
spellingShingle	coastal lagoon Ria Formosa Ancão Inlet nutrients chlorophyll a transports laguna costera Ría Formosa bocana de Ancão nutrientes clorofila a transportes Alcântara, P Cravo, A Jacob, J Variability of nutrients and chlorophyll a in Ancão Inlet during a spring tidal cycle in April 2009
description	São Luis or Ancão Inlet is the most western of the six inlets of the Ria Formosa lagoon, in southern Portugal. This inlet contributes relatively little to the water volume exchange over a tidal cycle (~10%). Temperature, salinity, pH, dissolved oxygen, and chlorophyll a and nutrient concentrations were measured hourly at the surface, at an intermediate level, and near the bottom over a complete spring tidal cycle, at a sampling point in the middle of the inlet. Current velocity was also measured hourly over the entire cross-section of the inlet using an acoustic Doppler current meter. From these parameters, the flow rate and the transport of nutrients and chlorophyll a were calculated and integrated over the complete tidal cycle providing the net transport. The results show that this is a well-mixed dynamic inlet where, during spring tide, the tidal signal is evident particularly for the nutrient and chlorophyll a concentrations. The nutrient concentrations were low (almost depleted), while the chlorophyll a concentrations were high (4–6 mg m–3). The estimated transports through Ancão Inlet revealed that there was a net import of chlorophyll a, nitrate, and phosphate to the Ria Formosa lagoon, while silicate was exported to the adjacent coastal area.
format	info:eu-repo/semantics/article
author	Alcântara, P Cravo, A Jacob, J
author_facet	Alcântara, P Cravo, A Jacob, J
author_sort	Alcântara, P
title	Variability of nutrients and chlorophyll a in Ancão Inlet during a spring tidal cycle in April 2009
title_short	Variability of nutrients and chlorophyll a in Ancão Inlet during a spring tidal cycle in April 2009
title_full	Variability of nutrients and chlorophyll a in Ancão Inlet during a spring tidal cycle in April 2009
title_fullStr	Variability of nutrients and chlorophyll a in Ancão Inlet during a spring tidal cycle in April 2009
title_full_unstemmed	Variability of nutrients and chlorophyll a in Ancão Inlet during a spring tidal cycle in April 2009
title_sort	variability of nutrients and chlorophyll a in ancão inlet during a spring tidal cycle in april 2009
publisher	Iniversidad Autónoma de Baja California
publishDate	2011
url	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1780
_version_	1792610096800333824

Variability of nutrients and chlorophyll a in Ancão Inlet during a spring tidal cycle in April 2009

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