Ocean Bridges - People

People

Mar Benavides

Senior Researcher National Oceanography Centre

My research is devoted to understanding the interactions between marine microbes and their physical, chemical and biological environment through a multi-spatiotemporal scale lens. My underlying philosophy is that processes that take place at small scales (molecule or cell level) can have impact at larger -regional or even global- scales. In the same manner, larger scale processes such as ocean circulation can alter the interactions between microbes and their environment affecting their distribution and activity. From the nanoscale to the global scale, unveiling the interactions between the marine environment and its microbes requires an interdisciplinary approach. I combine nanotechnology, molecular biology, biogeochemistry and modeling to bridge the spatiotemporal scales of microbial processes in the ocean.

mar.benavides@noc.ac.uk

Researchers

Kassandra Dudek

PhD students

Katharina Klaushofer

Arthur Coët

Aix-Marseille Université, co-supervised by Pierre Ronceray (CINaM)

Thesis: Dynamics and architecture of diazotroph particle colonization

arthur.coet@mio.osupytheas.fr

Visiting researchers

Joaquín Martínez-Martínez

Visiting students

Stine Zander Hagen is a PhD student at Lasse Riemann's lab (Unversity of Copenhaguen, Denmark). She will be visiting us in January 2024 to analyze IRMS and MIMS samples from an Arctic Ocean cruise

Jana Härri is a Master student at Nicolas Gruber's lab (ETH-Zürich, Switzerland). She will be visiting us in April 2022 to analyze qPCR diazotroph samples from the North Atlantic Ocean

Lisa von Friesen is a PhD student at Lasse's Riemann's lab (Unversity of Copenhaguen, Denmark). She will be visiting us in October to analyze IRMS and MIMS samples from an Arctic Ocean cruise

Christian Furbo Reeder from the SDU (Germany) is visiting us in December 2021 to learn diazotroph culturing techniques and work of nifD gene annotation together with Subhadeep Chowdhury in the frame of the projects DINDE/IDEFIX

PhD students Jacqueline Umbricht and Angelina Klett from the Leibniz-Baltic Sea Research Institute (Germany) are visiting us in summer 2021 to work on the NOTION project experiments

Former team members

Pierre McCavana

IRD Engineer - Moored instrumentation design

Now Engineer at DT-INSU (Brest, France)

Subhadeep Chowdhury

Aix-Marseille Université, co-supervised by Sophie Bonnet (MIO)

Thesis: Dinitrogen Fixation in the Indian Ocean: an interbasin and seasonal comparison

My research focuses on the Dinitrogen Fixation in the Indian Ocean in order to decipher the distribution and diversity of diazotrophs across basins and seasons. Also, I am trying to figure out how biogeochemical and environmental factors affect diazotrophs diversity and their N2 fixation activity in this mysterious ocean basin. In addition, I am interested to trace the alternative nitrogenases in Ocean and their potential to fixing N2.

Now PostDoc at Boston University (USA)

Cécile Carpaneto

AMU Engineer - Molecular biology, at sea support, lab management

Now PhD student at IEO-CSIC (Gijón, Spain)

Elena Cerdán

Aix-Marseille Université

Project: Ecogenomics of particle-attached non-cyanobacterial diazotrophs

Now PostDoc at Institut de Ciències del Mar (Barcelona, Spain)

Christian Furbo Reeder

Aix-Marseille Université

Project: Impact of particle microbial colonization on nitrogen cycling in the ocean

Now PostDoc at Linnaeus University (Kalmar, Sweden)

Alba Filella, PhD student

Aix-Marseille Université, co-supervised by France Van Wambeke (MIO)

Thesis: Diazotroph interactions with organic matter under climate change

Now Postdoc at ASU (Tucson, USA)

Cora Hörstmann, Postdoc

Aix-Marseille Université

Project: Fine scale dynamics of diazotrophs in the ocean

Now Postdoc at AWI (Bremerhaven, Germany)

Rémi Legrand , Master student

Aix-Marseille Université, Master in Computational and Mathematical Biology

Project: Improving nifH gene annotation

Isabel Baños , PhD student

Universidad de Las Palmas de Gran Canaria, co-supervised with Javier Arístegui (ULPGC) and Federico Baltar (UWien)

Thesis: The effect of climate change stressors on marine plankton respiration

Now Technician at IEO-CSIC (Santa Cruz de Tenerife, Spain)

Arthur Coët, Master student

Université Claude Bernard Lyon 1

Project: Particles as niches for non-cyanobacterial diazotrophs

Now PhD student at Aix-Marseille University (Benavides and Ronceray supervisors)

Cinthya Vieira, Master student

Universidad Autónoma de México

Project: Assessing cyanobacterial diazotroph mixotrophy: global distribution of DOM uptake genes

Now PhD student at ICM-CSIC (Barcelona, Spain)

Jean-Charles Cancel, Postdoc

Aix-Marseille Université

Project: Near real-time quantification of diazotrophs through nanobody immunolabeling

Now scientific advisor at Thermo-Fisher.

Emile Seris, Biotech Engineer

Sup'Biotech Paris

Project: Growth of diazotrophic cyanobacteria under climate change scenarios

Alana Boyer, Biotech Engineer

Polytech Aix-Marseille Université

Project: Exploring microbes in marine particles: function, traits and diversity associated

Clara Ducrocq, Undergrad student

Université de Versailles

Project: Marine microbial respiration under climate change

Now PhD student at Bordeaux University.

Louis Conradt, Master student

Master Recherche d'Océanographie spécialité Océanographie physique et biogéochimique, Aix-Marseille Université

Project: Fine scale variability of nitrogen fixation in the western tropical South Pacific Ocean

Louise Miech, Biotech Engineer

Sup'Biotech Paris

Project: Role of diazotrophs in coral nitrogen nutrition

Emilie Poletti, Master student

Master Recherche d’Océanographie spécialité Biologie Écologie Marine, Aix-Marseille Université

Project: Cyanobacterial diazotrophs under pressure

Now project assistant at Stella Mare (CNRS, France)

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