Preface: The Oligotrophy to the UlTra-oligotrophy PACific Experiment (OUTPACE cruise, 18 February to 3 April 2015)

The overall goal of OUTPACE (Oligotrophy to UlTra-oligotrophy PACific Experiment) was to obtain a successful representation of the interactions between planktonic organisms and the cycle of biogenic elements in the western tropical South Pacific Ocean across trophic and N2 fixation gradients. Within...

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Vydáno v:Biogeosciences Ročník 14; číslo 13; s. 3207 - 3220
Hlavní autoři: Moutin, Thierry, Doglioli, Andrea Michelangelo, de Verneil, Alain, Bonnet, Sophie
Médium: Journal Article
Jazyk:angličtina
Vydáno: Katlenburg-Lindau Copernicus GmbH 06.07.2017
European Geosciences Union
Copernicus Publications
Témata:
Archipelagoes
Biodiversity
Biogeochemical cycles
Biogeochemistry
Biological activity
Carbon
Carbon sequestration
Chlorophyll
Chlorophyll a
Climate change
Climatology
Cruises
Dynamics
Ecology, environment
Environmental aspects
Fixation
Fluxes
Interactions
Life Sciences
Nitrogen fixation
Oceans
Oligotrophy
Onboard
Organic matter
Plankton
Satellites
Sea currents
Sea surface
Sea surface temperature
Summer
Surface temperature
Temperature effects
Tropical climate
Pacific Ocean
South Pacific
ISSN:1726-4189, 1726-4170, 1726-4189
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Shrnutí:The overall goal of OUTPACE (Oligotrophy to UlTra-oligotrophy PACific Experiment) was to obtain a successful representation of the interactions between planktonic organisms and the cycle of biogenic elements in the western tropical South Pacific Ocean across trophic and N2 fixation gradients. Within the context of climate change, it is necessary to better quantify the ability of the oligotrophic ocean to sequester carbon through biological processes. OUTPACE was organized around three main objectives, which were (1) to perform a zonal characterization of the biogeochemistry and biological diversity of the western tropical South Pacific during austral summer conditions, (2) to study the production and fate of organic matter (including carbon export) in three contrasting trophic regimes (increasing oligotrophy) with a particular emphasis on the role of dinitrogen fixation, and (3) to obtain a representation of the main biogeochemical fluxes and dynamics of the planktonic trophic network. The international OUTPACE cruise took place between 18 February and 3 April 2015 aboard the RV L'Atalante and involved 60 scientists (30 onboard). The west–east transect covered ∼  4000 km from the western part of the Melanesian archipelago (New Caledonia) to the western boundary of the South Pacific gyre (French Polynesia). Following an adaptive strategy, the transect initially designed along the 19° S parallel was adapted along-route to incorporate information coming from satellite measurements of sea surface temperature, chlorophyll a concentration, currents, and diazotroph quantification. After providing a general context and describing previous work done in this area, this introductory paper elucidates the objectives of OUTPACE, the implementation plan of the cruise and water mass and climatological characteristics and concludes with a general overview of the other papers that will be published in this special issue.
Bibliografie:SourceType-Scholarly Journals-1
ObjectType-General Information-1
content type line 14
ISSN:1726-4189
1726-4170
1726-4189
DOI:10.5194/bg-14-3207-2017