Spatial and temporal variability of pico-, nano- and microphytoplankton in the offshore waters of the southern Adriatic Sea (Mediterranean Sea)

Cerino, Federica; Aubry, Fabrizio Bernardi; Coppola, Joan; Ferla, Rosabruna La; Maimone, Giovanna; Socal, Giorgio; Totti, Cecilia

doi:10.1016/j.csr.2011.06.006

Cited by 68 publications

(46 citation statements)

References 49 publications

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“…Picophytoplankton dominates the phytoplankton community in the southern Adriatic and appears to be its main primary producer (Najdek et al, 2014;Babić et al, 2017), while microphytoplankton production is restricted to coastal waters, the deep chlorophyll maximum, and periods during or following winter convection (Gačić et al, 2002;Batistić et al, 2012;Cerino et al, 2012;Ljubimir et al, 2017). Winters in the southern Adriatic are characterized by convection events and vertical mixing that recur regularly, supporting the nutrient enrichment of the surface waters that enhances phytoplankton development (Batistić et al, 2012, Ljubimir et al, 2017.…”

Section: Introductionmentioning

confidence: 99%

Unusual winter zooplankton bloom in the open southern Adriatic Sea

Ljubešić¹,

Babić²,

Bosak³

et al. 2017

Turk J Zool

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The paper reports an unusual response of the microzooplankton community to oceanographic conditions observed during the winter of 2015 in the open southern Adriatic. Record-breaking nauplii abundance of 13,734 ind. m -3 was sampled for the open southern Adriatic by 50-µm net sampling. This could be explained by (i) warmer-than-usual surface and intermediate ocean temperatures, (ii) higher precipitation that freshened and widened the surface layer, pushing saline Levantine Intermediate Water below a 400-m depth, and (iii) strong wind episodes that transported nutrients from the coastal zone to the open ocean and induced limited vertical mixing. Neritic tintinnids and viable photoautotrophs well below the photic zone support the last possibility. Average seasonal maximum of zooplankton abundance was shifted from spring and early summer to the late winter months. Our results document large and fast variations in production conditions rarely found to occur in oligotrophic waters such as the southern Adriatic Sea.

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Section: Introductionmentioning

confidence: 99%

Unusual winter zooplankton bloom in the open southern Adriatic Sea

Ljubešić¹,

Babić²,

Bosak³

et al. 2017

Turk J Zool

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“…Thus, there was an alternating pattern between larger phytoplankton and picophytoplankton. These patterns have also been described in Cerino et al (2011).…”

Section: Different Pieces Of the Coastal Carbon Budgetmentioning

confidence: 68%

Picophytoplankton and carbon cycle on the northeastern shelf of the Gulf of Cádiz (SW Iberian Peninsula)

Ribas-Ribas¹,

Sobrino²,

Debelius³

et al. 2013

Sci. Mar.

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were carried out on the northeastern shelf of the Gulf of Cádiz (southwest Iberian Peninsula) to relate the spatio-temporal distribution of the carbon cycle parameters (dissolved inorganic carbon and dissolved organic carbon) to picophytoplankton biomass and community composition. In addition, the net ecosystem production and the picophytoplankton contribution to the air-sea CO 2 exchange process were investigated. The results showed that chlorophyll-a, carbon cycle parameters and picophytoplankton composition showed large seasonality, and the Guadalquivir Estuary plays an important role in the contribution of nutrient and suspended particular material over the year. Regarding picophytoplankton composition, the flow cytometry analysis demonstrated that Prochlorococcus and Synechococcus were the main populations in the studied area and their temporal and spatial distributions were complementary: the Prochlorococcus population showed its maximum concentration in May'07 and Jun'06 and in the surface oceanic water, whereas the Synechococcus population was at its maximum during Feb'07 and Nov'06, and off the Guadalquivir Estuary and Bay of Cádiz. In addition, a relationship between the studied parameters and the fugacity of CO 2 was also observed, suggesting that primary production is an important factor in the regulation of this parameter in the studied area. The calculated carbon budget showed that the area acts as a carbon sink on an annual basis.Keywords: carbon cycle, chlorophyll-a, picophytoplankton, seasonal variations, coastal zone, Guadalquivir Estuary, Gulf of Cádiz.RESUMEN: PicofitoPlancton y ciclo del carbono en la Plataforma continental noreste del golfo de cádiz (so Península ibérica). -Se llevaron a cabo cuatro campañas oceanográficas (Jun'06 y Nov'06; Feb'07 y May'07) en la plataforma continental noreste del golfo de Cádiz (suroeste de la península Ibérica) para relacionar la distribución espaciotemporal de los parámetros del ciclo del carbono (carbono inorgánico disuelto y carbono orgánico disuelto) con la biomasa picofitoplanctónica y la composición de la comunidad. Además, se investigó la producción neta del ecosistema y la contribución del picofitoplancton al proceso de intercambio atmósfera-agua de CO 2 . Los resultados mostraron que la clorofila-a, los parámetros del ciclo del carbono y la composición del picofitoplancton presentaron una gran estacionalidad, jugando el estuario del Guadalquivir un papel importante en la contribución de nutrientes y material particulado en suspensión a lo largo del año. Los análisis de citometría demostraron que Prochlorococcus y Synechococcus fueron las principales poblaciones en el área de estudio y que su distribución espacial y temporal fue complementaria: Prochlorococcus presentó la máxima concentración en primavera y verano en aguas superficiales oceánicas, mientras que Synechococcus en invierno y otoño en aguas someras. Además, se observó una relación entre los parámetros estudiados y fugacidad de CO 2 , lo que sugiere que la producción primaria es un fact...

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“…For instance, in offshore waters of the southern Adriatic Sea, Cerino et al (2012) determined that PFP organisms, mainly picoprokaryotes, were the most important phototrophic fraction with 96% of total abundance and up to 49% of total biomass. In oligotrophic waters of the Campeche Canyon, PFP showed still moderate densities (1.5×10 3 cell ml -1 ) at Station 102, at 180 m (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…In other regions elsewhere in the world, Prochlorococcus and Synechococcus usually contribute above 70% of the total phytoplankton community (CROSBIE and FURNAS, 2001;CERINO et al, 2012), with cell abundances ranging between 10 4 -10 5 (CHISHOLM et al, 1988) and 10 3 -10 5 cells ml -1 (GROB et al, 2007), respectively.…”

Section: Discussionmentioning

confidence: 99%

“…The term autotrophic picoplankton or picophytoplankton (PFP) refers to the smallest photosynthetic prokaryote and eukaryote organisms of aquatic ecosystems with a cell size between 0.5 and 3µm, of worldwide distribution in marine waters (STOCKNER, 1988;PARTENSKY et al, 1999;MAN-AHARONOVICH et al, 2010;CERINO et al, 2012). This photosynthetic community of microorganisms has shown a great and unexpected species diversity (LE GALL et al, 2008;NOT et al, 2009;MOON-VAN DER STAAY et al, 2001;MAN-AHARONOVICH et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Studies on picophytoplankton in the southern Gulf of Mexico: recognition of picoprokaryotes and abundances of picophytoplankton during "dry season"

et al. 2013

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A B S T R A C TThe abundance and distribution of total autotrophic picophytoplankton (PFP), temperature, salinity, PAR, and chlorophyll a were determined in two presumably contrasting environments: (1) two coastal areas (close to the mouths of three rivers), and (2) one oceanic area (Campeche Canyon), of the southern Gulf of Mexico, during the "dry season" (June-July, 2004). The picoprokaryotes Prochlorococcus and Synechococcus were identified by TEM, whereas Synechococcus and picoeukaryotes populations were also recognized by flow cytometry. The highest PFP abundance (1.67×105 cells ml-1) was found in shallow waters (~10 m depth) around the Grijalva-Usumacinta river mouth, followed by that found at a station close to the Coatzacoalcos River (1.19×105 cells ml-1); PFP abundances in the Campeche Canyon were usually lower (maximum 1.53×104 cells ml-1). Greater variability in PFP abundances was found in coastal stations than in oceanic waters, and weak relationships appeared between the patterns of chlorophyll a and PFP abundance. Peaks of PFP were detected in both coastal and more oceanic areas, but in the Campeche Canyon they were located deeper (60 m), relatively closer to the deep maximum of chlorophyll (located at about 75 m). Results suggest that PFP populations include a substantial photosynthetic component in both coastal and oceanic waters of the southern Gulf of Mexico. R E S U M OAbundância e distribuição do picofitoplâncton autotrófico total (PFP), temperatura, salinidade, PAR e clorofila-a, foram determinados em dois ambientes presumivelmente diferentes: (1) duas áreas costeiras (perto da foz de três rios) e (2) uma área oceânica (Campeche Canyon), ambas situadas ao sul do Golfo do México, durante a "estação seca" (Junho-Julho, 2004). Os picoprocariontes Prochlorococcus e Synechococcus foram identificados por TEM, e as populações de Synechococcus e de picoeucariontes também foram reconhecidas por citometria de fluxo. A maior abundância de PFP (1,67 × 105 células ml-1) foi encontrada em águas rasas (~ 10 m de profundidade) em torno dos rios Grijalva Usumacinta, seguida de uma estação perto do Rio Coatzacoalcos (1,19 × 105 células ml-1). As abundâncias de PFP em Campeche Canyon foram geralmente menores (máximo 1,53 × 104 células ml-1). A maior variabilidade em abundâncias de PFP foi encontrada em estações costeiras quando comparado às águas oceânicas, e quase não houve correlação entre os padrões de clorofila-a e abundância de PFP. Picos de PFP foram detectados nas áreas costeiras e oceânicas, mas em Campeche Canyon localizaram-se em maior profundidade (60 m), relativamente mais perto do local onde se registrou o máximo de clorofila (cerca de 75 m). Os resultados sugerem que as populações de PFP englobam um componente fotossintético substancial em ambas as águas costeiras e oceânicas do sul do Golfo do México.

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Spatial and temporal variability of pico-, nano- and microphytoplankton in the offshore waters of the southern Adriatic Sea (Mediterranean Sea)

Cited by 68 publications

References 49 publications

Unusual winter zooplankton bloom in the open southern Adriatic Sea

Unusual winter zooplankton bloom in the open southern Adriatic Sea

Picophytoplankton and carbon cycle on the northeastern shelf of the Gulf of Cádiz (SW Iberian Peninsula)

Studies on picophytoplankton in the southern Gulf of Mexico: recognition of picoprokaryotes and abundances of picophytoplankton during "dry season"

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