Primary Production in the Ocean

Thornton, Daniel C. O.

doi:10.5772/27848

Cited by 6 publications

(3 citation statements)

References 103 publications

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“…The trophic use of carbon and dietary energy produced within (autochthonous) and outside (allochthonous) aquatic ecosystems is still poorly understood. Autotrophic primary production is the basal source of dietary energy and essential biomolecules in most ecosystems (Thornton, 2012). However, autotrophic primary production in terrestrial and aquatic environments is affected substantially by the availability of light and CO 2 .…”

Section: Introductionmentioning

confidence: 99%

The second life of terrestrial and plastic carbon as nutritionally valuable food for aquatic consumers

et al. 2023

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Primary production is the basis for energy and biomolecule flow in food webs. Nutritional importance of terrestrial and plastic carbon via mixotrophic algae to upper trophic level is poorly studied. We explored this question by analysing the contribution of osmo‐ and phagomixotrophic species in boreal lakes and used 13C‐labelled materials and compound‐specific isotopes to determine biochemical fate of carbon backbone of leaves, lignin–hemicellulose and polystyrene at four‐trophic level experiment. Microbes prepared similar amounts of amino acids from leaves and lignin, but four times more membrane lipids from lignin than leaves, and much less from polystyrene. Mixotrophic algae (Cryptomonas sp.) upgraded simple fatty acids to essential omega‐3 and omega‐6 polyunsaturated fatty acids. Labelled amino and fatty acids became integral parts of cell membranes of zooplankton (Daphnia magna) and fish (Danio rerio). These results show that terrestrial and plastic carbon can provide backbones for essential biomolecules of mixotrophic algae and consumers at higher trophic levels.

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Section: Introductionmentioning

confidence: 99%

The second life of terrestrial and plastic carbon as nutritionally valuable food for aquatic consumers

et al. 2023

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“…The average concentration at each station went from 0.0982 (station 20) to 0.2646 x 10 -3 mg.L -1 (station 11). Generally, the mean chlorophyll-a concentration in Sangihe-Talaud (0.21 mg.m -3 ) was slightly lower than the mean chlorophylla in the global ocean (0.32 mg.m -3 ) (Thornton, 2012). Additionally, the chlorophyll-a data (Table 4) indicates that most of the water column in Sangihe-Talaud was oligotrophic, with chlorophyll-a concentration <0.5 mg.m -3 (Ignatiades, 2005).…”

Section: Vertical and Horizontal Variability Of Chlorophyll-amentioning

confidence: 88%

Vertical and Horizontal Variability of Chlorophyll-a and Its Relationship with Environmental Parameters in the Waters of Sangihe and Talaud Islands, North Sulawesi, Indonesia

Firdaus,

Rachman,

Fitriya

et al. 2024

Indo. J. Mar. Sci.

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The chlorophyll-a is an important biological parameter that could act as a proxy to indicate the abundance of phytoplankton and the primary productivity of an aquatic ecosystem. This paper investigates the vertical and horizontal variability of chlorophyll-a in the waters of Sangihe and Talaud Islands, Indonesia, and its correlation with water environmental parameters. In this study, the distribution of chlorophyll-a, temperature, salinity, and nutrients (NO3 and PO4) from the surface to a depth of 200 m (photic zone) was measured at 29 research stations. The results showed that the distribution of chlorophyll-a in the waters of the Sangihe-Talaud Islands was varied vertically and horizontally. The waters around the Sangihe Islands generally exhibited a higher chlorophyll-a distribution and shallower Deep Chlorophyll Maxima compared to the water around the Talaud Islands. The concentration of chlorophyll-a varied between 0.0017 and 1.2155 mg.m-3, with most of the water column in Sangihe-Talaud considered oligotrophic, although some stations or depths were mesotrophic or slightly eutrophic. The maximum chlorophyll-a concentration was found in the sub-surface layer at depths between 46 and 101 m. The low N:P ratio (<16) and N:Si ratio (<1) indicate that the water columns of Sangihe-Talaud, up to a depth of 200m, were N-limited. Based on the GAM analysis, chlorophyll-a concentration in Sangihe-Talaud waters was primarily regulated by temperature, salinity, and the N:P ratio, with weak influence from phosphate and the N:Si ratio. The analysis also suggests that primary productivity in Sangihe-Talaud is sensitive to temperature changes, indicating its vulnerability to future warming events.

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“…El fitoplancton comprende grupos taxonómicos que pueden diferir notablemente en su fisiología. Existen grupos autótrofos como las cianobacterias, las clorófitas, las diatomeas y los silicoflagelados, entre otros (Field et al, 1998;Falkowski et al, 2004;Thornton, 2012), mixotróficos y heterótrofos, como algunos dinoflagelados, que constituyen un componente vital del bucle microbiano (Fenchel, 1988;Sanders, 1991;Stoecker, 1998;Jones et al, 2007).…”

Section: Introductionunclassified

Listado de especies de fitoplancton en la bahía de Tumaco, Pacífico colombiano

Hoyos Acuña,

Quintana-Manotas,

Bermudez Rivas

et al. 2021

Intropica

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Se presenta un listado actualizado de las especies de fitoplancton de la bahía de Tumaco, generado a partir de la literatura disponible desde 1979 hasta 2019 y campañas oceanográficas realizadas por el Laboratorio del Centro de Investigaciones Oceanográficas e Hidrográficas del Pacífico (CCCP) de la Dirección General Marítima (DIMAR). Se registran un total de 400 especies comprendidas en ocho divisiones: Cyanophyta, Chrorophyta, Charophyta, Euglenophyta, Haptophyta, Ochorophyta, Bacillariophyta y Dinophyta, dos subdivisiones, 12 clases, 14 subclases, 53 órdenes, 93 familias y 146 géneros. Las diatomeas constituyeron el taxa más diverso, seguido de los dinoflagelados; algunos representantes de las cianobacterias fueron identificados a nivel genérico. Cuatro géneros y cinco morfoespecies representan a las desmidias, mientras que, solo dos especies a los silicoflagelados. Los flagelados, euglenas y clorofitas son representados por un género y una morfoespecie. Los géneros con mayor número de especies fueron: Chaetoceros (30), Tripos (29), Protoperidinium (24), Nitzschia (15), Rhizosolenia (12) y Coscinodiscus (10). De las muestras analizadas en el laboratorio, se registran un total de 152 especies de las cuales 39 registradas por primera vez en la bahía de Tumaco. Se identificaron las especies según su hábitat y se determinaron las formadoras de Florecimientos Algales Nocivos (FAN).

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Primary Production in the Ocean

Cited by 6 publications

References 103 publications

The second life of terrestrial and plastic carbon as nutritionally valuable food for aquatic consumers

The second life of terrestrial and plastic carbon as nutritionally valuable food for aquatic consumers

Vertical and Horizontal Variability of Chlorophyll-a and Its Relationship with Environmental Parameters in the Waters of Sangihe and Talaud Islands, North Sulawesi, Indonesia

Listado de especies de fitoplancton en la bahía de Tumaco, Pacífico colombiano

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