Nutrient and phytoplankton dynamics in a coastal lagoon strongly affected by coastal upwelling

San Quintín Bay is a coastal lagoon influenced by the California Current System (CCS) coastal upwelling. Upwelling brings nutrient-rich waters near the bay mouth and tidal currents propagate those waters throughout the bay. Upwelling intensification and relaxation events occur with a period of ~2 we...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	Álvarez-Borrego, Saúl
Formato:	info:eu-repo/semantics/article
Lenguaje:	eng
Publicado:	Iniversidad Autónoma de Baja California 2015
Materias:	coastal lagoon phytoplankton nutrients coastal upwelling interannual variation laguna costera fitoplancton nutrientes surgencia costera variación interanual
Acceso en línea:	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2510
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	repositorioinstitucional-20.500.12930-7485
record_format	dspace
institution	Repositorio Institucional
collection	DSpace
language	eng
topic	coastal lagoon phytoplankton nutrients coastal upwelling interannual variation laguna costera fitoplancton nutrientes surgencia costera variación interanual
spellingShingle	coastal lagoon phytoplankton nutrients coastal upwelling interannual variation laguna costera fitoplancton nutrientes surgencia costera variación interanual Álvarez-Borrego, Saúl Nutrient and phytoplankton dynamics in a coastal lagoon strongly affected by coastal upwelling
description	San Quintín Bay is a coastal lagoon influenced by the California Current System (CCS) coastal upwelling. Upwelling brings nutrient-rich waters near the bay mouth and tidal currents propagate those waters throughout the bay. Upwelling intensification and relaxation events occur with a period of ~2 weeks, possibly due to the variability of circulation of the CCS. Off San Quintín, the CCS has an offshore component of the flux, causing upwelling intensification events as strong as off Point Conception (34.5°N), with high phytoplankton productivity. At the lagoon's mouth, upwelling is the main cause of variability for all physicochemical properties except temperature. Semi-diurnal tides are the main cause of variability for temperature. Nutrient remineralization at the sediments and turbulence induced by tidal currents and wind waves increase nutrient concentrations in the lagoon. At the heads of the bay, phytoplankton abundance was ten-fold lower, productivity and chlorophyll concentrations were three-fold lower, chlorophyll content per cell was three-fold higher, and turbidity was higher than at the mouth. The few available data suggest the hypothesis that the effect of ENSO events on phytoplankton biomass depends on the interdecadal regime shifts in the northeastern Pacific. At the lagoon's mouth and adjacent ocean, summer salinities as low as 32.4 suggest the arrival of water parcels that originate in the north, possibly the Columbia River estuarine plume.
format	info:eu-repo/semantics/article
author	Álvarez-Borrego, Saúl
author_facet	Álvarez-Borrego, Saúl
author_sort	Álvarez-Borrego, Saúl
title	Nutrient and phytoplankton dynamics in a coastal lagoon strongly affected by coastal upwelling
title_short	Nutrient and phytoplankton dynamics in a coastal lagoon strongly affected by coastal upwelling
title_full	Nutrient and phytoplankton dynamics in a coastal lagoon strongly affected by coastal upwelling
title_fullStr	Nutrient and phytoplankton dynamics in a coastal lagoon strongly affected by coastal upwelling
title_full_unstemmed	Nutrient and phytoplankton dynamics in a coastal lagoon strongly affected by coastal upwelling
title_sort	nutrient and phytoplankton dynamics in a coastal lagoon strongly affected by coastal upwelling
publisher	Iniversidad Autónoma de Baja California
publishDate	2015
url	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2510
_version_	1792609599294013440
spelling	repositorioinstitucional-20.500.12930-74852023-05-09T14:30:48Z Nutrient and phytoplankton dynamics in a coastal lagoon strongly affected by coastal upwelling Dimimica de nutrientes y fitoplancton en una laguna costera fuertemente afectada por surgencias costeras Álvarez-Borrego, Saúl coastal lagoon phytoplankton nutrients coastal upwelling interannual variation laguna costera fitoplancton nutrientes surgencia costera variación interanual San Quintín Bay is a coastal lagoon influenced by the California Current System (CCS) coastal upwelling. Upwelling brings nutrient-rich waters near the bay mouth and tidal currents propagate those waters throughout the bay. Upwelling intensification and relaxation events occur with a period of ~2 weeks, possibly due to the variability of circulation of the CCS. Off San Quintín, the CCS has an offshore component of the flux, causing upwelling intensification events as strong as off Point Conception (34.5°N), with high phytoplankton productivity. At the lagoon's mouth, upwelling is the main cause of variability for all physicochemical properties except temperature. Semi-diurnal tides are the main cause of variability for temperature. Nutrient remineralization at the sediments and turbulence induced by tidal currents and wind waves increase nutrient concentrations in the lagoon. At the heads of the bay, phytoplankton abundance was ten-fold lower, productivity and chlorophyll concentrations were three-fold lower, chlorophyll content per cell was three-fold higher, and turbidity was higher than at the mouth. The few available data suggest the hypothesis that the effect of ENSO events on phytoplankton biomass depends on the interdecadal regime shifts in the northeastern Pacific. At the lagoon's mouth and adjacent ocean, summer salinities as low as 32.4 suggest the arrival of water parcels that originate in the north, possibly the Columbia River estuarine plume. Bahía San Quintín es una laguna costera influenciada por surgencias costeras del Sistema de la Corriente de California (SCC). Las surgencias acarrean aguas ricas en nutrientes cerca de la boca de la bahía y las corrientes de marea las propagan a través de toda la bahía. Existen eventos de intensificación y relajamiento de surgencias con un periodo de ~2 semanas, posiblemente debidos a la variabilidad de la circulación del SCC. El SCC tiene un componente de flujo hacia mar adentro frente a San Quintín. Esto causa eventos de intensificación de surgencia tan fuertes como los que se dan frente a Point Conception (34.5°N), con alta productividad fitoplanctónica. En la boca de la laguna las surgencias son la causa principal de variabilidad de todas las propiedades físicas y químicas, con excepción de la temperatura que es afectada principalmente por las mareas semidiurnas. La remineralización de los nutrientes en los sedimentos, y la turbulencia inducida por las corrientes de marea y el oleaje incrementan las concentraciones de nutrientes en la laguna. En los extremos internos de la bahía hay hasta diez veces menos abundancia de fitoplancton, tres veces menos productividad y concentración de clorofila, tres veces más alto contenido de clorofila por célula, y mayor turbidez que en la boca de la bahía. Los pocos datos disponibles sugieren la hipótesis de que el efecto de los eventos de El Niño en la biomasa del fitoplancton depende de los cambios interdecadales de régimen climático en el Pacífico nororiental. En la boca de la laguna y el océano adyacente, salinidades de verano tan bajas como 32.4 sugieren el arribo de parcelas de agua originadas en el norte, posiblemente de la lengüeta estuarina del Río Columbia. 2015-01-06 2021-06-03T03:55:26Z 2021-06-03T03:55:26Z 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/2510 10.7773/cm.v30i1A.2510 https://hdl.handle.net/20.500.12930/7485 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2510/1498 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 30 No. 1A (2004); 1-19 Ciencias Marinas; Vol. 30 Núm. 1A (2004); 1-19 2395-9053 0185-3880

Nutrient and phytoplankton dynamics in a coastal lagoon strongly affected by coastal upwelling

Ejemplares similares

Síguenos en: