Our shared sea

Mechanisms of ecosystem change in the Western Channel

Research teams of the Station Biologique de Roscoff  involved in MARINEXUS

Research Unit Adaptation and diversity in the marine environment (CNRS-UPMC, UMR 7144)

Marine Chemistry
Four main research topics are developed within the Marine chemistry Research Group : climate-change gases, chemical tracers of ocean circulation, dynamics of nitrogen and associated elements (phosphorus, silicon, …) in coastal environments and coastal observatory.

Team Diversity and Connectivity in Coastal Marine Landscapes
The overarching goal of the team “diversity & connectivity in coastal marine landscapes” is to explore dispersal strategies in coastal marine organisms and their consequences on the diversity of populations and communities.

Team Evolutive Biology and Marine Diversity
Our team studies the structure and evolution of biodiversity in marine algae, focusing in particular on theevolution of life cycles and reproductive systems (evolution of sex, parthenogenesis, self-fertilization vs. outcrossing) and on speciation processes and hybrid zones. These questions are explored using field studies, population genetics analyses and mathematical modeling.

Research group Food Webs and Benthic Production
The group uses various theoretical and experimental approaches and methods including assessments of benthic biodiversity and population structure, measures of primary and secondary production, isotope ratio mass spectrometry, and in situ measurements of metabolic activity of both immersed and emerged benthic systems.
Diversity of Oceanic Plankton
Plankton plays a key role in oceanic primary production and biogeochemical cycles.  The team focuses on the taxonomy, diversity and interactions among phytoplankton groups (particularly small photosynthetic eukaryotes, dinoflagellate parasites and phytoplankton viruses) using a range of approaches from cultivation to (meta) genomics.

Evolution of Plankton and PaleoOceans
The overarching goal of the team is to assess rates of genomic, phenotypic, and metabolic changes in marine plankton, and in particular protists, as well as to estimate their role in global change and the dynamics of the Earth system.


Research unit Marine vegetation and biomolecules (CNRS-UPMC, UMR 7139)

Research group Algal Genetics
One of the major aims of biological research is to understand the developmental processes that lead to the construction of complex multicellular organisms. We are developing a genetic and genomic model species for the brown algae to provide a wider phylogenetic perspective on this important problem and to allow the study of developmental features specific to this group of organisms, with a particular focus on life cycle regulation and sex determination.

Research group Abiotic stress and functional genomics of seaweeds
Abiotic stress are the constraints caused by the non-living environment. Functional genomics- using genetic information to understand gene and protein functions and interaction- is a powerful tool to obtain new, useful and interesting knowledge about seaweeds. With the sequencing of the genomes from a brown alga (Ectocarpus siliculosus) and a red alga (Chondrus crispus) we now have two unprecedented tools to study the ecology and physiology of seaweeds.

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