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Akademický článek

Intermittent Upwelling Events Trigger Delayed, Major, and Reproducible Pico‐Nanophytoplankton Responses in Coastal Oligotrophic Waters

Autor: R. Fuchs, V. Rossi, C. Caille, N. Bensoussan, C. Pinazo, O. Grosso, M. Thyssen

Publikováno v: Geophysical Research Letters, Vol 50, Iss 5, Pp n/a-n/a (2023)

Abstract Pico‐nanophytoplankton organisms are dominant in oceanic oligotrophic areas but their adaptive growth rates make their contribution to the carbon cycle difficult to estimate. Here we address their response capacities after sporadic wind gu

Externí odkaz: https://doaj.org/article/5f4728e16c51459e99eafb07b81ca464

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Akademický článek

Meso-zooplankton structure and functioning in the western tropical South Pacific along the 20th parallel south during the OUTPACE survey (February–April 2015)

Autor: F. Carlotti, M. Pagano, L. Guilloux, K. Donoso, V. Valdés, O. Grosso, B. P. V. Hunt

Publikováno v: Biogeosciences, Vol 15, Pp 7273-7297 (2018)

The western tropical South Pacific (WTSP) is one of the most understudied oceanic regions in terms of the planktonic food web, despite supporting some of the largest tuna fisheries in the world. In this stratified oligotrophic ocean, nitrogen fixatio

Externí odkaz: https://doaj.org/article/b76fde6321aa403c9699e99e59068cb6

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Akademický článek

Silicon cycle in the tropical South Pacific: contribution to the global Si cycle and evidence for an active pico-sized siliceous plankton

Autor: K. Leblanc, V. Cornet, P. Rimmelin-Maury, O. Grosso, S. Hélias-Nunige, C. Brunet, H. Claustre, J. Ras, N. Leblond, B. Quéguiner

Publikováno v: Biogeosciences, Vol 15, Pp 5595-5620 (2018)

This article presents data regarding the Si biogeochemical cycle during two oceanographic cruises conducted in the tropical South Pacific (BIOSOPE and OUTPACE cruises) in 2005 and 2015. It involves the first Si stock measurements in this understud

Externí odkaz: https://doaj.org/article/bc979559fc4546c69a011702cf732d5b

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Akademický článek

In-depth characterization of diazotroph activity across the western tropical South Pacific hotspot of N2 fixation (OUTPACE cruise)

Autor: S. Bonnet, M. Caffin, H. Berthelot, O. Grosso, M. Benavides, S. Helias-Nunige, C. Guieu, M. Stenegren, R. A. Foster

Publikováno v: Biogeosciences, Vol 15, Pp 4215-4232 (2018)

Here we report N2 fixation rates from a ∼ 4000 km transect in the western and central tropical South Pacific, a particularly undersampled region in the world ocean. Water samples were collected in the euphotic layer along a west to east tra

Externí odkaz: https://doaj.org/article/87c76ec8abac4694bbde8024092dac60

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Akademický článek

Distribution and rates of nitrogen fixation in the western tropical South Pacific Ocean constrained by nitrogen isotope budgets

Autor: A. N. Knapp, K. M. McCabe, O. Grosso, N. Leblond, T. Moutin, S. Bonnet

Publikováno v: Biogeosciences, Vol 15, Pp 2619-2628 (2018)

Constraining the rates and spatial distribution of dinitrogen (N2) fixation fluxes to the ocean informs our understanding of the environmental sensitivities of N2 fixation as well as the timescale over which the fluxes of nitrogen (N) to and from

Externí odkaz: https://doaj.org/article/b1cbe75d2738452293c18f5e459dda17

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Akademický článek

N2 fixation as a dominant new N source in the western tropical South Pacific Ocean (OUTPACE cruise)

Autor: M. Caffin, T. Moutin, R. A. Foster, P. Bouruet-Aubertot, A. M. Doglioli, H. Berthelot, C. Guieu, O. Grosso, S. Helias-Nunige, N. Leblond, A. Gimenez, A. A. Petrenko, A. de Verneil, S. Bonnet

Publikováno v: Biogeosciences, Vol 15, Pp 2565-2585 (2018)

We performed nitrogen (N) budgets in the photic layer of three contrasting stations representing different trophic conditions in the western tropical South Pacific (WTSP) Ocean during austral summer conditions (February–March 2015). Using a Lagr

Externí odkaz: https://doaj.org/article/a5236a327ff0427d9f4d28ba4ecf4ac2

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Akademický článek

Aphotic N2 fixation along an oligotrophic to ultraoligotrophic transect in the western tropical South Pacific Ocean

Autor: M. Benavides, K. M. Shoemaker, P. H. Moisander, J. Niggemann, T. Dittmar, S. Duhamel, O. Grosso, M. Pujo-Pay, S. Hélias-Nunige, A. Fumenia, S. Bonnet

Publikováno v: Biogeosciences, Vol 15, Pp 3107-3119 (2018)

The western tropical South Pacific (WTSP) Ocean has been recognized as a global hot spot of dinitrogen (N2) fixation. Here, as in other marine environments across the oceans, N2 fixation studies have focused on the sunlit layer. However, studies h

Externí odkaz: https://doaj.org/article/22cd006a64fd4bbf9d9f28bcf023cf49

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Akademický článek

Nutrient availability and the ultimate control of the biological carbon pump in the western tropical South Pacific Ocean

Autor: T. Moutin, T. Wagener, M. Caffin, A. Fumenia, A. Gimenez, M. Baklouti, P. Bouruet-Aubertot, M. Pujo-Pay, K. Leblanc, D. Lefevre, S. Helias Nunige, N. Leblond, O. Grosso, A. de Verneil

Publikováno v: Biogeosciences, Vol 15, Pp 2961-2989 (2018)

Surface waters (0–200 m) of the western tropical South Pacific (WTSP) were sampled along a longitudinal 4000 km transect (OUTPACE cruise, DOI: 10.17600/15000900) during the austral summer (stratified) period (18 February to 3 April 2015) between

Externí odkaz: https://doaj.org/article/d351538eb7b145e581476000a56c88cf

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Akademický článek

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Akademický článek

Transfer of diazotroph-derived nitrogen towards non-diazotrophic planktonic communities: a comparative study between Trichodesmium erythraeum, Crocosphaera watsonii and Cyanothece sp.

Autor: H. Berthelot, S. Bonnet, O. Grosso, V. Cornet, A. Barani

Publikováno v: Biogeosciences, Vol 13, Iss 13, Pp 4005-4021 (2016)

Biological dinitrogen (N2) fixation is the major source of new nitrogen (N) for the open ocean, and thus promotes marine productivity, in particular in the vast N-depleted regions of the surface ocean. Yet, the fate of the diazotroph-derived N (DDN)

Externí odkaz: https://doaj.org/article/22dbc0ba116a4163ac109f87260cbb07

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