REBENT 11

Type Oceanographic cruise
Set This cruise is part of the set REBENT
Ship Thalia
Ship owner Ifremer
Dates 30/05/2006 - 11/06/2006
Chief scientist(s) HAMON Dominique, BLANCHET-AURIGNY Aline

DYNECO-LEBCO LABORATOIRE D'ÉCOLOGIE BENTHIQUE CÔTIÈRE

IFREMER Centre de Bretagne

ZI Pointe du diable

CS 10070

29280 PLOUZANE

+33 (0)2 98 22 49 19

Philippe.Cugier@ifremer.fr

https://dyneco.ifremer.fr/Qui-sommes-nous/Ecologie-benthique-cotiere-LEBCO
DOI 10.17600/6070120
Objective The coastal benthic biocenoses monitoring network's strategy, defined in the REBENT (Benthic Network) program, planned to set up long-term biodiversity monitoring of habitats in benchmark sectors distributed along the coast line. Pursuing actions undertaken since 2003 to identify and characterize benthic habitats in these reference sectors, the REBENT 11 cruise dealt with two sites, with the following aims: 1) In the Trégor-Goëlo sector (30 May to 2 June), biological characterization of subtidal soft sediment benthic habitats, after preliminary mapping of them using sidescan sonar in the framework of the REBENT10 cruise. A stratified biological sampling approach (based on acoustic facies) for the macrofauna was undertaken using a Hamon grab and subsea video sequences also provided information about both megafauna and the morphosedimentary nature of the seabed. Sediment samples were also taken with a Shipek grab in the Trieux channel in order to complement those already done during REBENT10 and validate the acoustic image acquisition. 2) In the Concarneau sector (7 to 11 June), using sidescan sonar in specifying the outer boundaries of seafloors covered with Haploops (tube-building amphipods) which had been previously mapped. This population had already been identified in the bay of Concarneau and in the Glénan archipelago, so it was interesting to see whether there was continuity of this habitat between the two sectors. Along with the additional sonar logs, there were sedimentary samples taken with the Shipek grab (to validate acoustic data), Hamon grab samples, sedimentary core samples and video observation of Haploops bottoms using video.

Data managed by SISMER

Bibliography

Publications

Dutertre Mickael, Hamon Dominique, Chevalier Claire, Ehrhold AxelORCID (2013). The use of the relationships between environmental factors and benthic macrofaunal distribution in the establishment of a baseline for coastal management. Ices Journal Of Marine Science, 70(2), 294-308. https://doi.org/10.1093/icesjms/fss170


References of Technical Reports

Ehrhold AxelORCID, Chevalier Claire, Alix Anne-Sophie, Autret Elodie, Caisey Xavier, Drussel Benjamin, Gaffet Jean-Dominique, Hamon Dominique, Houlgatte Eric, Pluquet Fabrice, Biscara Laurie, Choisnet Justine, Bajjouk Touria (2013). Réseau de surveillance benthique – Région Bretagne. Approche sectorielle subtidale : Identification et caractérisation des habitats benthiques du secteur Trégor-Goëlo. ODE/DYNECO/EB/13- 01/REBENT. https://archimer.ifremer.fr/doc/00280/39161/


Ehrhold AxelORCID, Blanchet Aline, Hamon Dominique (2007). Réseau de surveillance benthique. Région Bretagne. Approche sectorielle subtidale : Identification et caractérisation des habitats benthiques du secteur Concarneau. RST/IFREMER/DYNECO/EB/07-01/REBENT. https://archimer.ifremer.fr/doc/00714/82652/