Ocean-color variability in the Gulf of California: scales from days to ENSO

Kahru, Mati; Marinone, S.G.; Lluch-Cota, Salvador E.; Parés‐Sierra, Alejandro; Mitchell, B. Greg

doi:10.1016/j.dsr2.2003.04.001

Cited by 81 publications

(88 citation statements)

References 22 publications

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“…Hidalgo-González & Álvarez-Borrego (2004) y Kahru et al (2004) reportaron la productividad primaria e influencia de El Niño 1997-1998 en el Golfo de California. Los cambios fueron menos evidentes en la parte Norte, sin embargo, en esta investigación, la influencia del El Niño no fue registrada durante todo el evento, sino únicamente en marzo y abril de 1997 y 1998.…”

Section: Borregounclassified

“…En el Golfo de California obedece principalmente a la intrusión de Agua Superficial Tropical, la disminución de la mezcla vertical por el incremento de la estratificación térmica (Kahru et al 2004) y a la dominancia de nanofitoplancton con bajo contenido de clorofila (Valdez-Holguín & Lara-Lara 1987). Además, el forzamiento que ejerce el Océano Pacífico en el golfo es notable cuando hay intrusión de Agua Subtropical (Castro et al 2000), la cual tiene características diferentes al Agua del Golfo de California, en temperatura, salinidad y nivel medio del mar.…”

Section: Borregounclassified

“…Kahru et al (2004) mencionan que la estacionalidad es uno de los modos básicos de variabilidad en muchos ecosistemas marinos, los cuales pueden ser estudiados a partir de imágenes de satélite. Además, es factible conocer su respuesta a eventos como El Niño Oscilación Austral (ENOA), que es un fenómeno de acoplamiento océano-atmósfera que causa variabilidad climática global de escalas interanuales (Wolter &Timlin 2011).…”

Section: Introductionunclassified

“…El Golfo de California ha sido dividido en varias zonas, de acuerdo a condiciones biológicas, físicas y oceanográficas (Santamaría-del-Ángel et al 1994, Hidalgo-González & Álvarez-Borrego 2001, Kahru et al 2004, Espinosa-Carreón & Valdez-Holguín 2007. Una de esas regiones es conocida como Norte del Golfo de California (NGC), donde existe un alto endemismo de vertebrados e invertebrados acuáticos (Thompson et al 2000) y es importante para la región por sus pesquerías (Rodríguez-Quiroz et al 2010).…”

Section: Introductionunclassified

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Variabilidad estacional de la clorofila a y su respuesta a condiciones El Niño y La Niña en el Norte del Golfo de California

Pérez-Arvizu

Aragón-Noriega

Espinosa-Carreón

2013

Rev. biol. mar. oceanogr.

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El Niño Austral Oscillation). We propose that shifts from a strong El Niño (1997Niño ( -1998 to La Niña conditions (1999), the phytoplankton biomass response was low because a great oceanography conditions changes (wind, stability, etc.), however with the shifts from El Niño weak (2009)(2010) to La Niña (2011), these conditions represent less stress with a suitable phytoplankton response and the biomass increases.

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Section: Borregounclassified

Section: Introductionunclassified

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Variabilidad estacional de la clorofila a y su respuesta a condiciones El Niño y La Niña en el Norte del Golfo de California

Pérez-Arvizu

Aragón-Noriega

Espinosa-Carreón

2013

Rev. biol. mar. oceanogr.

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“…July-October Chl sat minima in Ballenas Channel are not as low as in other places of the gulf. On the other hand, Kahru et al (2004) used Ocean Color and Temperature Sensor (OCTS) and Sea Viewing Wide Field of View Sensor (SeaWiFS) color data to generate time series of the median Chl sat values for twelve regions within the gulf, and concluded that the annual cycle is the dominant mode of phytoplankton biomass variability in the entire gulf, except in the Midriff Islands region and just south of it where the semiannual cycle dominated. Also, Hidalgo-González and Álvarez-Borrego (2001Álvarez-Borrego ( , 2004 reported average in situ chlorophyll a and PP values representative of December-June and July-October conditions for the whole central region of the gulf.…”

Section: Annual and Semiannual Variations Of Phytoplankton Biomass Anmentioning

confidence: 99%

Annual and semiannual variations of phytoplankton biomass and production in the central Gulf of California estimated from satellite data

et al. 2013

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ABSTRACT. Surface waters of the Midriff Islands region of the Gulf of California persistently have the lowest temperatures (SST) and the highest nutrient concentrations of all surface waters of the gulf. The purpose of this work was to characterize the annual and semiannual variations of satellite-derived SST, chlorophyll a (Chl sat ), and phytoplankton production (PP) along transects in Ballenas Channel (transect A), between Ángel de la Guarda and Tiburón islands (transect B), and San Pedro Mártir Basin (SPMB) (transect C). This was done with monthly composites of SST, Chl sat , and PP for 2005 and 2006. Chl sat and PP have annual and semiannual components of variation at the three transects, but the temporal setup is different for each transect. In Ballenas Channel the two maxima occurred in March-June and October, while along transect B in March-May and in late autumn and early winter, and at SPMB in February-May and October-December. The explanation for the differences is in the physical dynamics of these areas. Strong turbulence and stratification caused low Chl sat and PP, and intermediate stratification caused high values for transects A and B. On the eastern side of transect C, upwelling caused the highest Chl sat and PP of our data set (up to 9.7 mg m -3 and 7.8 g C m -2 d -1 ). Photosynthesis in our study area is not limited by iron. Low summer Chl sat and PP values are caused by strong stratification inhibiting nutrient eddy diffusion from below the thermocline to the euphotic zone. Nevertheless, the summer Chl sat and PP values for the Midriff Islands region (often >1 mg m -3 and >1 g C m -2 d -1 ) are relatively high.

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New insights into productivity and redox‐controlled trace element (Ag, Cd, Re, and Mo) accumulation in a 55 kyr long sediment record from Guaymas Basin, Gulf of California

et al. 2015

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A high-resolution, 55 kyr long record of chalcophile and redox-sensitive trace element accumulation (Ag, Cd, Re, and Mo) from MD02-2515, western Guaymas Basin, is investigated in conjunction with patterns in stratigraphy and productivity. High opal concentrations (~59 wt. %), representing increased diatom production, coincide with laminated sediments and dilute the concentrations of organic carbon (C org ) and metals. A similarity between opal and normalized C org , Ag, and Cd concentrations suggests delivery to the sediments by diatom export production, while patterns in normalized Re and Mo accumulation suggest a different emplacement mechanism. Although Mo enrichment in organic-rich, laminated sediments typically represents anoxic conditions at other locations, Mo (and Re) in Guaymas Basin is enriched in nonlaminated and bioturbated sediments that are representative of oxygenated conditions. Adsorption onto Fe-and/or Mn-oxyhydroxide surfaces during oxygenation inadequately explains both the Re and Mo enrichments. Thus, recently published mechanisms invoking direct Re and Mo removal from the water column and bioturbation-assisted irrigation of Re into the sediments are used to explain the counterintuitive observations in Guaymas Basin. The MD02-2515 stratigraphic and proxy records are also different from other records in the northeast Pacific in that there is little correspondence with Greenland Dansgaard-Oeschger interstadials. There is some correlation with Heinrich events, suggesting that ventilation of intermediate waters and/or reduced productivity may be important in controlling stratigraphy and trace element accumulation. The results question whether MD02-2515 records can be compared to northeast Pacific open-margin records, especially before 17 kyr B.P.

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Ocean-color variability in the Gulf of California: scales from days to ENSO

Cited by 81 publications

References 22 publications

Variabilidad estacional de la clorofila a y su respuesta a condiciones El Niño y La Niña en el Norte del Golfo de California

Variabilidad estacional de la clorofila a y su respuesta a condiciones El Niño y La Niña en el Norte del Golfo de California

Annual and semiannual variations of phytoplankton biomass and production in the central Gulf of California estimated from satellite data

New insights into productivity and redox‐controlled trace element (Ag, Cd, Re, and Mo) accumulation in a 55 kyr long sediment record from Guaymas Basin, Gulf of California

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