Mercury stable isotopes constrain atmospheric pathways to the ocean

Mercury is one of the least concentrated trace elements in the ocean. Yet, the small seawater Hg levels biomagnify million times along the marine food chain, to reach harmful levels in predatory fish and their human consumers. Natural and anthropogenic Hg sources to the ocean remain ill-constrained. It took 10 years of development to come up with a method to measure Hg stable isotopes of seawater at subpicomolar levels.

Welcome to Léa Guyomarc'h (CEM)

Léa GUYOMARC'H was recruited in an external competition at IRD for a position of chemical analysis engineer at the MIO.

Léa is a chemical engineer, graduated from the Ecole Nationale Supérieure d'Ingénieurs de Poitiers, and holds a master in water quality and treatment. She completed an international volunteer in Hanoi, Vietnam, from October 2019 to September 2021 as part of the SOOT-SEA program.

She will take up her position at MIO, in the Marine Environment Chemistry (MEC) team, starting on December 1, 2021.

 

"Face à Face Recherche" with the portrait of Nathalie Prévot-D'Alvise, MIO-EMBIO

The University of Toulon launches the series " Face à Face Recherche " with the teachers-researchers of the University of Toulon.

In 5 minutes, discover their careers, their motivations and their areas of expertise.

What led them to teaching and research?
What makes them passionate about this profession?
What advice would they give to a young researcher?

Find here the portrait of Nathalie Prevot-D'Alvise, teacher-researcher at MIO.

 

"Climate change impacts the presence of mercury in the ocean"

An interview with Lars-Eric Heimbürger-Boavida (MIO-CEM) in the newspaper La Marseillaise of October 16, 2021
 

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Congratulations to Héléne Gaussier (MEB) who defended her HDR on October 27, 2021

The title is: Biological activities in complex environments: enzymes, interfaces and bacterial communities

The jury will be composed of :

Dr. LAURENCE BESSUEILLE (University of Lyon 1) Rapporteur

Dr. MARIA SOLEDAD GONI URRIZA (University of Pau and Adour countries) Rapporteur

Pr. NICOLAS GUILIANI (Universidad de Chile, Nunoa, Santiago) Rapporteur

Prof. PEDRO COUTINHO (Aix Marseille University) Examiner

Dr. ALAIN DOLLA (Aix Marseille University) Examiner

 

Mission ALT4

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Congratulations to Julie Hardy (MEB) who defended her thesis on October 28, 2021

On the following topic:

"Study of the metatranscriptome of anaerobic digestion: from bioinformatic development to the study of stability under inhibitory conditions"
 
Supervisor: Patricia Bonin, DR CNRS
Co-director: Sébastien Lacroix, DR Véolia

Abstract in French

Annual seminar of the ANR SeqDigger partners

he October 12-13 meeting was the annual seminar of the ANR SeqDigger partners.

The SeqDigger project addresses the problem of querying raw "omics" sequencing data on the fly to exploit the growing amount of data. The goal of this project is to build an ultra-fast, user-friendly search engine that compares a read to data from large sequencing projects.

Identify bottlenecks as hubs of the ocean circulation transport system

An international scientific team, in which our colleague Vincent Rossi participated, has just developed a new method of analysis of fluid flows in the ocean inspired by the network theory. This method makes it possible to highlight the existence of bottlenecks in the ocean circulation and thus to better understand the transport of water masses and the dispersion of organisms living in them, especially plankton.

Protecting Biodiversity: On the Road to Zero Plastic Waste

Richard Sempere, Director of the Institute of Ocean Sciences at AMU and member of the MIO, spoke on BFMTV Marseille about the degradation of plastic as part of the ambitious project of the South Provence-Alpes-Côte d'Azur Region: achieving zero plastic waste by 2030