Launch of the High Council for the Climate in Brittany (HCBC)

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At the initiative of the Region, the Haut Conseil Breton pour le Climat (High Council for the Climate in Brittany) (HCBC) will be responsible for informing the political choices of regional elected officials in terms of climate change. This consultative body, bringing together 20 experts, whose creation was acted during the Regional Council meeting of 24/02/2022 to 26/02/2022, was installed this Friday 13 May in Rennes, for 6 years, by President Loïg Chesnais-Girard.

Among the experts, two are members of the IUEM, Anne-Marie Tréguier CNRS oceanographer at LOPS, and Luis Tito de Morais marine ecologist from IRD, former director of LEMAR.

Anne-Marie Tréguier co-chairs the HCBC with Vincent Dubreuil, Professor of Geography at Rennes 2 University.

Find some of the media coverage here:


RESILIENCE oceanographic cruise – 19 April to 24 May 2022

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Marion Dufresne vessel

RESILIENCE campaign logo

The RESILIENCE oceanographic campaign will take place in the Indian Ocean from 19 April to 24 May 2022. About 50 international scientists, led by Jean-François Ternon, IRD researcher at UMR MARBEC, have embarked on board the ship Marion Dufresne, from Reunion Island, to study the interactions between physics and biology at “small scale” (~10km). The scientists will travel to eddy-front areas in the Mozambique Channel and the east coast of South Africa.

RESILIENCE cruise route

RESILIENCE cruise route with the three sampling sites: southern Mozambique Channel, north of the east coast of South Africa and south of Durban

Scientists from France (MARBEC, ENTROPIE, LEMAR, LOCEAN, LOG, LOPS, MIO), South Africa (3 Universities – Qqeberha, Cape Town, Stellenbosch), Mozambique, the UK and the USA are participating, including members of our acoustic platform.

The campaign hosts a Floating University with 20 students and 2 supervisors, from the Universities of Bretagne Occidentale (UBO), Littoral Côte d’Opale (ULCO) and Côte d’Azur (UCA).

Understanding the role of eddies in biological productivity and ecosystem structuring

The main objective of the RESILIENCE campaign is to study physical-biological interactions at small scales (~1-10 km), particularly on front zones at the edge of mesoscale eddies (~100km) that are numerous in the Mozambique Channel. The aim of the mission is to understand the role of physical processes (vertical exchanges in particular) on a small scale – well described by modelling but difficult to observe at sea – on the biological productivity and structuring of pelagic ecosystems. Coupled measurements of the various parameters will help to answer these questions. Frontal areas are often the place where fish, birds and marine mammals aggregate. In the context of climate change, it is predicted that the intensity of these fronts will vary in the future with possible consequences for these ecosystems. “The results of the campaign will therefore contribute to a study of the consequences of these changes on the exploited ecosystems of the area (food security issue for the riparian countries),” explains Jean-François Ternon. The geographical area sampled will be the centre of the Mozambique Channel and the east coast of South Africa. There are marked eddy structures in these areas, in contrasting hydrodynamic contexts (numerous fronts in the centre of the Mozambique Channel, eddy-coast interactions to the north of the east coast of South Africa, a semi-permanent eddy south of Durban, located between the coast and the Agulhas Current). As the eddies studied are by nature mobile structures, the sampling plan will be continuously adapted by real-time analysis of satellite data (altimetry, water colour) carried out on board.

Find here the press release on the campaign.

You can follow the RESILIENCE campaign, in English or French,, with the hashtag resilience_science and by subscribing to the Twitter and Instagram pages below ↓

Twitter: @UF_Resilience

Instagram: @uf_resilience


Ecology, environment and biodiversity day in Brest

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Ecology, environment and biodiversity week

This day is organised by the CNRS on Monday 30 May 2022, in Brest under the aegis of the laboratories of the Ecology and Environment Partnership Facility (DIPEE). It is part of the first National Week in Ecology, Environment and Biodiversity which will be held from 30 May to 3 June 2022. Numerous events will take place throughout France, thanks to the 11 Ecology and Environment Partnership Arrangements (DIPEE).

This event in Brest is an opportunity to bring together researchers, partners and local stakeholders around scientific, environmental and societal issues and the opportunity to showcase the scientific expertise of CNRS laboratories in ecology, environment and biodiversity.

Many LEMAR researchers will present their work. Registration is free but mandatory (before May 20, subject to availability).

Find the programme, information and registration form here.

The event will take place at the Pôle Numérique Brest Iroise (PNBI), 305 Av. Alexis de Rochon, 29280 Plouzané, in the immediate vicinity of the IUEM.

Workshop on transdisciplinary cooperation for the resilience of socio-ecosystems

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From 26 to 28 April, the UBO will host around twenty researchers from SEA-EU universities as part of a workshop devoted to cooperation between scientists and local actors around the resilience of coastal zones and the sustainable future of local socio-ecosystems. This was an opportunity to discuss the activities carried out in the Zone Atelier Brest Iroise (ZABrI), a member of the European Long-Term Ecosystem Research Network (eLTER), which aims to understand the functioning and evolution of the coastal socio-ecosystem.

More information here

and here a look back at these days,

on the UBO website.


PPP, February 2022 update

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1/ Monitoring contamination in coastal areas

Every 6 months, we carry out a sampling campaign of floating debris in the bay of Douarnenez and the roadstead of Brest, 2 of the 7 pilot areas of the PPP project. Four campaigns have already been carried out using a double neuston net with a mesh size of 335µm. In addition, in Brest harbour, a campaign of simultaneous sampling of floating microplastics (surface) and neutrally buoyant microplastics (water column) on 335 and 80 µm mesh. The purpose of these samples is to compare contamination levels according to the size of the particles sampled. The 80µm mesh is also used to better estimate the ecological risks, as the smallest microplastics are more bioavailable to enter the food chain. The samples, once brought back to the laboratory, are completely sorted by hand, digested, filtered and photographed before undergoing FTIR spectral analysis to define their nature and, when plastic, the polymer. This will be used to feed a database common to the 7 pilot sites. Finally, LEMAR also supports the “Objective Plankton” participatory science days organised by Océanopolis in Brest harbour. This day, organised 3 times a year, allows the collection of plankton and microplastic samples from several simultaneous points in the Brest roadstead, constituting a unique data set, while raising awareness among yachtsmen about the issues of plastic pollution and global warming.

2/ Ecological impact study

The first scientific paper just published in the Journal of Hazardous Materials (Figure 1) studied the developmental impacts in oysters of chemical desorption of rubbers. Indeed, among the diversity of plastic wastes emitted in the environment, rubber represents a significant part of the contamination with specific chemical signatures. We studied the chemical toxicity of three types of rubber objects: tyres, granules from the recycling of tyres for synthetic sports fields and oyster elastics. These three types of object in their “new” form emitted chemical compounds that reduced the embryonic development success of the oyster in connection with higher additive contents compared to used objects. The strongest effects were observed when exposed to the chemical compounds emitted by the new oyster elastics. These also decreased the survival of oyster sperm, thereby reducing their fertilisation success.

Figure 1. Graphical summary of the results of the experiment that evaluated the developmental impacts of chemical molecules released from 3 types of new and used rubbers on young oyster life stages.

Access the article


3/ Sobriety, sorting and recycling of plastics

PPP is also a formidable accelerator within our Institutes of the implementation of actions aimed at reducing the use of plastic and sorting and recycling the plastic waste produced. For example, the installation of 12 sorting islands (37 baskets in total) for the recycling of plastic bottles and PET flasks has been set up at IUEM after having been tested at Ifremer, as well as the collection and recovery of cigarette butts. A methodology for the reduction of laboratory plastics and the collection of unsoiled laboratory plastic waste is being tested. For example, 30kg of plastics were collected during 1 month by 15 IUEM labs and the first shipment of unsoiled laboratory plastics collected for the Ifremer part of the Lemar (more than 6kg) was sent to the company Rehab based in Concarneau to carry out tests on shredding our collected plastics to design plates for furniture. A working group for the elaboration of a “plastic-free” charter for all the events and convivial moments taking place in our institutes has also been set up.


4/ Science and society

Because transformational change also involves society and especially the new generation, Lemar is strongly involved in scientific mediation actions towards the general public and schoolchildren. Numerous educational events were held in 2021 for primary, secondary and high schools, either as interventions in these establishments or during events such as the Art’Pulseur festival or Plastic Hackaton organised by Océanopolis, stands at public events (Researchers’ Night, Science Festival, Plastic Odyssey event in Brest, Tour de France), round tables (e.g. Popular University of Biodiversity in Tours) or conferences for the general public (Heritage Days in Carantec, Sustainable Development Week in Granville).
For the stands, we have created two workshops, one entitled oysters-microplastics (Figure 2) which aims to offer pupils a scientific approach by showing the ingestion of small microplastics by shellfish, making it possible to explain their toxicity; and the second, with games and materials on the transfer of species by microplastics, in particular harmful species, questioning the possible transfer of disease by microplastics to marine animals.
To be seen or read with local implications: the production of a “Carte Blanche” article in the magazine Science Ouest entitled “Plastic pollution: a local approach to a global problem? The documentary “Dear Plastic, a toxic love story” directed by Dorothée Adam.


Figure 2. Photograph of the workshop: oysters are in seawater (transparent tank) fed by microalgae (coloured cylinder) and exposed to red-orange polyethylene microplastics. Copyright C. Lambert/CNRS.