Date: 2017

Temporal extent: 2017-04-08 - 2017-05-09

Author(s):Bertrand Arnaud1, Alory Gael2, Chaigneau Alexis2, Eldin Gérard2, Grelet Jacques3,
 Devesa Jeremy4, Bonnet Delphine5, Carre Claire1, Souza Lira Alex6, Garcia Xiomara6, Melo Pedro6,
 Nole Leandro6, Padovani Beatrice6, Roudaut Gildas7, Travassos Paulo6, Vargas Gary6, 
 Souza Dos Santos Arthur8, Rousselot Pierre3

DOI:10.17882/76352
Publisher: SEANOE
Keyword(s): CTD-O2, SADCP, TSG

Abstract

Physical data associated with the ABRACO2 cruise. The ABRACOS2 cruise’s main objective was to draw up a 3D characterisation of the abiotic and biotic compartments and their interactions. The cruise had 3 specific objectives: 1) Characterisation of water masses and their dynamics. Data collected (ADCP, CTD, rosette, etc.) will be used to study the physical connections between (i) ocean islands and coastal ecosystems and (ii) tropical/subtropical coastal regions to the South and equatorial coastal regions to the North. In-situ measurements will also make it possible to validate the regional high-resolution hydrodynamic models. 2) Ecosystem acoustics. Collecting multifrequency acoustic data in order to create the first 3D characterisation of island and coastal ecosystems in the Northeast Region of Brazil. Acoustic observations will be combined with sampling with pelagic trawl (Legs 1 and 2), bottom trawl (Leg 1), and with sampling of zooplankton and video images. 3) Biodiversity and food web structure. In-situ sampling will provide information about the distribution, biodiversity, trophic ecology (use of stable isotopes) and the contamination (methylmercury) of organisms. The related projects are ABRAÇOS and ‘Planning in a liquid world: Marine spatial planning and network dynamics’ (PADDLE), (H2020 RISE), (PI: M. Bonnin, 2017-2020).