Phytoplankton pigment distribution in the northwestern Alboran Sea and meteorological forcing: A remote sensing study

Macías, Diego; Navarro, Gabriel; Echevarrı́a, Fidel; García, Carlos M.; Cueto, Jean Linero

doi:10.1357/002224007782689085

Cited by 46 publications

(85 citation statements)

References 39 publications

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“…The largest amplitude of the leading EOF of the seasonal Chl a was located in the southern Iberian Peninsula coastal upwelling areas while the EOF amplitude of the first EOF of the residual Chl a was located off-shore, near the axis of the jet, gyres and frontal structures. The first EOFt of the Chl a seasonal part (representing 80% of the seasonal variance) had its maximum in winter and its minimum in spring-summer, in coherence with the typical seasonal variability observed in the area (Macías et al 2008), while the second EOFt showed an opposite phase with lower amplitude (Macías et al 2007). The first two EOF coefficients of residuals (with higher frequency oscillation than the seasonal EOFts) are shown in Figure 2D and represent 30% and 7% of the total explained variance.…”

Section: Resultssupporting

confidence: 66%

“…1) is strongly controlled by zonal wind, as has been shown in previous works (Baldacci et al 2001, Macías et al 2008, Solé et al 2012. It has been demonstrated that changes in the zonal wind have a strong effect on the ecosystem behaviour, through primary production influence (Sarhan et al 2000, Macías et al 2007, Macías et al 2008, Oguz et al 2015. The changes in zonal wind affect ocean surface structures and patterns such as gyres, the Almeria-Oran front (AOF) and the Algerian Current (see Fig.…”

Section: Introductionmentioning

confidence: 55%

“…Previous studies had emphasized the role of wind (mainly the zonal component) in the Alboran Sea primary production. Macías et al (2007) related the Chl a variability to seasonal winds and their effect on the upwelling area off the Malaga coast. The main ocean mechanism was linked to the role played by the Atlantic Jet entrance and its meridional displacement, reinforcing or weakening the coastal upwelling.…”

Section: Discussionmentioning

confidence: 99%

“…The seasonal and residual contribution of vertical versus horizontal velocity components to the total Chl a variability of the system has been analysed. Although previous works have analysed the role of the zonal winds in enhancing Chl a blooms at the seasonal scale (Macías 2007(Macías , 2008, recent works have suggested that the residual contribution to the total Chl a variability may also have a significant contribution (Solé et al 2012).…”

Section: Discussionmentioning

confidence: 99%

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The role of ocean velocity in chlorophyll variability. A modelling study in the Alboran Sea

Solé¹,

Ballabrera-Poy²,

Macías³

et al. 2016

Sci. Mar.

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Summary:In this work we focus on the Alboran Sea (western Mediterranean) to relate wind field and ocean velocity variability with chlorophyll a (Chl a) behaviour, using a 2-km resolution, coupled 3D ocean circulation-NPZD model (ROMS). The analysis is done in three steps. First, we split the seasonal and residual contribution for the fields under study. Second, we calculate the corresponding empirical orthogonal functions (EOFs) for the seasonal and residual parts. Finally, we relate each pair of variables for both seasonal and residual contribution EOFs. The results reported here allow the links between wind and Chl a to be quantified. We explain these links in terms of the ocean velocity field acting as a driver of Chl a variability. The results show that, although the seasonal part of the Chl a field is modulated by the vertical velocity, the residual component is modulated by the horizontal velocity components. Vertical velocities are responsible, through coastal upwelling, for Chl a bloom enhancement, while horizontal velocities spread coastal Chl a surface blooms off-shore.Keywords: Alboran Sea; chlorophyll; wind forcing; primary production; ocean biogeochemical model; ROMS model; EOF analysis.El papel de la velocidad oceánica en la variabilidad de la clorofila. Un estudio de modelado en el mar de Alborán Resumen: En este trabajo nos centramos en el mar de Alborán (Mediterráneo Occidental) para relacionar los campos de velocidad del viento y del océano con la variabilidad de la clorofila a (Chl a), utilizando un modelo de circulación 3D-NPZD (ROMS-Fennel) con una resolución de 2 km. El análisis se realiza en tres pasos. En primer lugar, separamos la contribución estacional y el residuo para todos los campos de estudio. En segundo lugar, calculamos las correspondientes funciones ortogonales empíricas (EOFs) para las components estacionales y residuales. Por último, relacionamos cada par de variables para ambos, EOFs estacionales y residuales. Los resultados permiten la cuantificación de las relaciones entre el viento y la clorofila. Explicamos estas relaciones en términos del campo de velocidades del océano que actúa como motor de la variabilidad de la Chl a. Los resultados muestran que, aunque la parte estacional de campo Chl a es modulada por la velocidad vertical, la componente residual es modulada por las componentes de la velocidad horizontal. Las velocidades verticales son responsables, a través de la surgencia costera, de incrementar el valor de la proliferación de Chl a, mientras que las velocidades horizontales extienden estas proliferaciones costeras superficiales a mar abierto.Palabras clave: mar de Alborán; clorofila; forzamiento del viento; producción primaria; modelo oceánico biogeoquímico; modelo ROMS; análisis EOF.

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Section: Resultssupporting

confidence: 66%

Section: Introductionmentioning

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The role of ocean velocity in chlorophyll variability. A modelling study in the Alboran Sea

Solé¹,

Ballabrera-Poy²,

Macías³

et al. 2016

Sci. Mar.

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“…Although the keyword "model" shows a descending trend, it ranked the 18th in top 20 keywords, and "ecosystem model" is found in ascending trend. The two keywords "remote sensing" and "seawif" in ascending trend are effective methods for large-scale studies, especially in ocean areas (Macias et al, 2007;Alkawri and Gamoyo, 2014;Ben Mustapha et al, 2014), in lakes (Odermatt et al, 2012;Bolpagni et al, 2014;Perkins et al, 2014) and bays (Zhao et al, 2014). Other methods also exhibit ascending trend, for example, "stable isotope" and "stoichiometric" are associated with trace element studies in phytoplankton (Sugimoto et al, 2014;Van de Waal et al, 2014); the increasing interest toward the stable isotope analysis is mainly due to the possibility to use this technique to reconstruct the trophic links inside atrophic web.…”

Section: Methodsmentioning

confidence: 99%

A bibliometric analysis of scientific trends in phytoplankton research

Wang

Liu

et al. 2015

Ann. Limnol. - Int. J. Lim.

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-We summarize the scientific trends in phytoplankton studies between 1991 and 2013 based on bibliometric analysis. The annual publication output on phytoplankton demonstrated a rapid linear increasing tendency during the past two decades, and its contribution to total scientific articles remained below 10%. Under the context of fast scientific research development, the yearly numbers of dependent publications (in terms of multi-aquatic ecosystems and international collaborations) indicate a linear increasing trend. The variations of keywords associated with research regions are mainly contributed by geographic adjacent countries, which are also generally the top contributors. Various trends of all the keywords relating to research methods, research contents and environmental factors indicate that phytoplankton studies carried out on large scale and long term are showing a significantly ascending trend, while traditional and local scale studies are showing a descending trend.

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Modeling the impact of tidal flows on the biological productivity of the Alboran Sea

et al. 2015

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The control of phytoplankton production by tidal forcing in the Alboran Sea is investigated with a high‐resolution ocean circulation model coupled to an ecosystem model. The aim of the modeling efforts was to elucidate the role of tides in sustaining the high biological productivity of the Alboran Sea, as compared with the rest of the Mediterranean subbasins. It is shown that tidal forcing accounts for an increase of phytoplankton biomass and primary productivity in the basin of about 40% with respect to a nontidal circulation, and about 60% in the western Alboran Sea alone. The tidal dynamics of the Strait of Gibraltar is shown to be the primary factor in determining the enhancement of productivity, pumping nutrients from depth to the photic zone in the Alboran Sea. Model results indicate that the biological implications of the propagating internal tides are small. These results imply that nutrient transports through the Strait of Gibraltar have to be parametrized in ocean models that do not resolve tides in order to properly represent the biochemical budgets of the Alboran Sea.

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Phytoplankton pigment distribution in the northwestern Alboran Sea and meteorological forcing: A remote sensing study

Cited by 46 publications

References 39 publications

The role of ocean velocity in chlorophyll variability. A modelling study in the Alboran Sea

The role of ocean velocity in chlorophyll variability. A modelling study in the Alboran Sea

A bibliometric analysis of scientific trends in phytoplankton research

Modeling the impact of tidal flows on the biological productivity of the Alboran Sea

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