Effect of the oxygen minimum zone on the second chlorophyll maximum

Field data collected during June 2005 were used to determine the relationship between the second fluorescence maximum (FMax), the top of the oxygen minimum zone (OMZ), and physical processes (coastal currents, eddies, and upwelling) in the northern region of the Eastern Tropical Pacific off Mexico (...

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Autores principales:	Cepeda-Morales, J, Beier, E, Gaxiola-Castro, G, Lavín, MF, Godínez, VM
פורמט:	info:eu-repo/semantics/article
שפה:	eng
יצא לאור:	Iniversidad Autónoma de Baja California 2009
נושאים:	chlorophyll fluorescence oxygen minimum zone Eastern Tropical North Pacific Mexican Coastal Current eddies euphotic zone fluorescencia de clorofila zona del mínimo oxígeno Pacífico nororiental tropical Corriente Costera Mexicana remolinos zona eufótica
גישה מקוונת:	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1622
תגים:	הוספת תג אין תגיות, היה/י הראשונ/ה לתייג את הרשומה!

id	repositorioinstitucional-20.500.12930-7427
record_format	dspace
spelling	repositorioinstitucional-20.500.12930-74272023-05-09T14:30:50Z Effect of the oxygen minimum zone on the second chlorophyll maximum Efecto de la zona del mínimo de oxígeno en el segundo máximo de clorofila en el Pacífico Oriental Tropical Mexicano Cepeda-Morales, J Beier, E Gaxiola-Castro, G Lavín, MF Godínez, VM chlorophyll fluorescence oxygen minimum zone Eastern Tropical North Pacific Mexican Coastal Current eddies euphotic zone fluorescencia de clorofila zona del mínimo oxígeno Pacífico nororiental tropical Corriente Costera Mexicana remolinos zona eufótica Field data collected during June 2005 were used to determine the relationship between the second fluorescence maximum (FMax), the top of the oxygen minimum zone (OMZ), and physical processes (coastal currents, eddies, and upwelling) in the northern region of the Eastern Tropical Pacific off Mexico (ETPM). A recurrent second FMax was observed in the ETPM, which was formed only when the upper limit of the OMZ (9.0 µmol L–1) overlapped with the 1% downwelling blue irradiance depth (Ed490). The presence of the second FMax increased the total integrated water column chlorophyll from 20% to 40%. The second FMax was absent from areas where oxygenated California Current Water (CCW) deepened the upper limit of the OMZ below 1% Ed490. The poleward Mexican Coastal Current carried less oxygenated Subtropical Subsurface Water into the area, and enabled the formation of the second FMax. The variability of the second FMax driven by mesoscale physical processes was related to coastal upwelling and cyclonic eddies only in areas not influenced by CCW.  A partir de datos de campo obtenidos durante junio de 2005 se investigó la relación entre el segundo máximo de fluorescencia (FMax), el límite superior de la zona del mínimo de oxígeno (ZMO) y algunos procesos físicos (corrientes costeras, remolinos y surgencia) presentes en la región norte del Pacífico Oriental Tropical Mexicano (POTM). Se presentó un segundo FMax en el POTM, el cual se formó sólo cuando el límite superior de la ZMO (9.0 µmol L–1) se sobrepuso con la profundidad del 1% de la banda azul de la irradiancia descendente (Ed490). La presencia del segundo máximo incrementó de 20% a 40% el valor total de la clorofila integrada en la columna de agua. El segundo FMax estuvo ausente en áreas donde agua con mayor oxígeno disuelto transportada por la Corriente de California hizo más profundo el límite superior de la ZMO por debajo del 1% de la Ed490. La Corriente Costera Mexicana transportó Agua Subsuperficial Subtropical con menor concentración de oxígeno, haciendo posible la formación del segundo FMax en su zona de influencia. La variabilidad del segundo FMax debida a procesos físicos de mesoescala estuvo relacionada con la incidencia de surgencias costeras y con remolinos ciclónicos fuera de la influencia del agua de la Corriente de California. 2009-12-08 2021-06-03T03:55:17Z 2021-06-03T03:55:17Z 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/1622 10.7773/cm.v35i4.1622 https://hdl.handle.net/20.500.12930/7427 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1622/1785 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 35 No. 4 (2009); 389-403 Ciencias Marinas; Vol. 35 Núm. 4 (2009); 389-403 2395-9053 0185-3880
institution	Repositorio Institucional
collection	DSpace
language	eng
topic	chlorophyll fluorescence oxygen minimum zone Eastern Tropical North Pacific Mexican Coastal Current eddies euphotic zone fluorescencia de clorofila zona del mínimo oxígeno Pacífico nororiental tropical Corriente Costera Mexicana remolinos zona eufótica
spellingShingle	chlorophyll fluorescence oxygen minimum zone Eastern Tropical North Pacific Mexican Coastal Current eddies euphotic zone fluorescencia de clorofila zona del mínimo oxígeno Pacífico nororiental tropical Corriente Costera Mexicana remolinos zona eufótica Cepeda-Morales, J Beier, E Gaxiola-Castro, G Lavín, MF Godínez, VM Effect of the oxygen minimum zone on the second chlorophyll maximum
description	Field data collected during June 2005 were used to determine the relationship between the second fluorescence maximum (FMax), the top of the oxygen minimum zone (OMZ), and physical processes (coastal currents, eddies, and upwelling) in the northern region of the Eastern Tropical Pacific off Mexico (ETPM). A recurrent second FMax was observed in the ETPM, which was formed only when the upper limit of the OMZ (9.0 µmol L–1) overlapped with the 1% downwelling blue irradiance depth (Ed490). The presence of the second FMax increased the total integrated water column chlorophyll from 20% to 40%. The second FMax was absent from areas where oxygenated California Current Water (CCW) deepened the upper limit of the OMZ below 1% Ed490. The poleward Mexican Coastal Current carried less oxygenated Subtropical Subsurface Water into the area, and enabled the formation of the second FMax. The variability of the second FMax driven by mesoscale physical processes was related to coastal upwelling and cyclonic eddies only in areas not influenced by CCW.
format	info:eu-repo/semantics/article
author	Cepeda-Morales, J Beier, E Gaxiola-Castro, G Lavín, MF Godínez, VM
author_facet	Cepeda-Morales, J Beier, E Gaxiola-Castro, G Lavín, MF Godínez, VM
author_sort	Cepeda-Morales, J
title	Effect of the oxygen minimum zone on the second chlorophyll maximum
title_short	Effect of the oxygen minimum zone on the second chlorophyll maximum
title_full	Effect of the oxygen minimum zone on the second chlorophyll maximum
title_fullStr	Effect of the oxygen minimum zone on the second chlorophyll maximum
title_full_unstemmed	Effect of the oxygen minimum zone on the second chlorophyll maximum
title_sort	effect of the oxygen minimum zone on the second chlorophyll maximum
publisher	Iniversidad Autónoma de Baja California
publishDate	2009
url	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1622
_version_	1792610096530849792

Effect of the oxygen minimum zone on the second chlorophyll maximum

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