SOGIR 14

Type Oceanographic cruise
Set This cruise is part of the set SOGIR
Ship Côtes De La Manche
Ship owner CNRS until 2019 - IFREMER since 2020
Dates 20/01/2014 - 21/11/2014
Chief scientist(s) DERRIENNIC Hervé , SOTTOLICHIO Aldo

ENVIRONNEMENTS ET PALÉOENVIRONNEMENTS OCÉANIQUES ET CONTINENTAUX - UMR 5805

Allée Geoffroy Saint-Hilaire

CS 50023

33615 Pessac Cedex

+33 (0)5 40 00 88 67

https://www.epoc.u-bordeaux.fr/

DOI 10.17600/14010000
Objective There are two complementary strands to the project: 1) regional action for ecological monitoring of the Blayais site (coord. Ifremer), 2) national action: coastal environment observation service (SOMLlT via RNSM, INSU). The ecological monitoring of the Blayais site consists in three stations sampled eight times over the year (one station directly off the power plant, one downstream and one upstream). These stations are shared with SOMLIT. It federates the marine stations at Wimereux, Roscoff, Brest, Arcachon, Banyuls, Villefranche-sur-Mer and Marseilles, with the aim of better understanding coastal ecosystems, and particularly anthropogenic or climate impacts. Studying annual and interannual variability -which is one of the main objectives of the observation service - requires taking samples throughout the year (impact of winter floods on the hydro-sedimentology and the biological cycle of zooplankton species). SOMLIT is based on a coherent network of measurement points to sample neritic and estuarine waters. At each SOMLIT-Blayais mission, 10 times a year, samples are taken at 3 or 4 stations at a set point during a tidal cycle at neap tide. Samples are taken at intervals of about three hours: 1 at high water, 2 mid-tide, 1 at low water, and at two levels: 1 m below the surface and 1 m above the seabed. In-situ measurements and sampling: depth, TO, salinity, dissolved oxygen, pH, current speed and direction; Samples of water and of zooplankton. -Grab samples of macrobenthos. Measurements in laboratory: Winkler, suspended matter, nutrients, COP, chlorophyll a, zooplankton and macrobenthos counts, bacteriology. This cruise was related to the SOMLIT program.

Bibliography

Publications

Pougnet Frédérique, Gil-Díaz Teba, Blanc Gerard, Coynel Alexandra, Bossy Cécile, Schäfer Jörg (2022). Historical mass balance of cadmium decontamination trends in a major European continent-ocean transition system: Case study of the Gironde Estuary. Marine Environmental Research, 176, 105594 (11p.). Publisher's official version : https://doi.org/10.1016/j.marenvres.2022.105594 , Open Access version : https://archimer.ifremer.fr/doc/00755/86663/


Pougnet F., Blanc G, Mulamba-Guilhemat E., Coynel A., Gil-Diaz T., Bossy C., Strady E., Schäfer J. (2021). Nouveau modèle analytique pour une meilleure estimation des flux nets annuels en métaux dissous. Cas du cadmium dans l’estuaire de la Gironde / New computation for a better estimation of the annual dissolved metal net fluxes. The case of the cadmium in the Gironde estuary. Hydroécologie Appliquée, 21, 47-69. Publisher's official version : https://doi.org/10.1051/hydro/2019002 , Open Access version : https://archimer.ifremer.fr/doc/00485/59713/


References of Technical Reports

Quintin Jean-Yves, Sottolichio Aldo, Derriennic Herve, Schmidt Sabine, Doremus Sandrine, Agion Tony, Hervio Heath DominiqueORCID, Sautour Benoît, Parra René, Dindinaud François, Bachelet Guy, Leconte Michel (2015). Surveillance Ecologique du site du Blayais - Année 2014. RST ODE/DYNECO/AG/15-05. https://archimer.ifremer.fr/doc/00333/44424/