Marine Ecology

The Research Division has four Research Units: Evolutionary Ecology of Marine Fishes, Experimental Ecology, Marine Microbiology and Marine Natural Products Chemistry


Head of the Research Division:

Prof. Dr. Thorsten Reusch
GEOMAR Helmholtz Centre for Ocean Research Kiel
Düsternbrooker Weg 20 
D-24105 Kiel
Phone: +49-431 - 600-4550
Fax: +49-431 - 600-4553
e-mail: treusch(at)

PA / Office Management:

Cornelia Rüther
Phone: +49-431- 600-4551
Fax: +49-431 - 600-134551
e-mail: cruether(at)


Press releases

RD3 Seminar

Lecture hall, West shore, Düsternbrooker Weg 20


28 January, 2016 - 1 pm (c.t.)

Prof. Justin Ries, Northeast University, USA
(host: Marlene Wall)

Impacts of ocean acidification on marine calcification: past, present and future



11 Februar, 2016 -  1 pm (c.t.)

Prof. Dr. Bernd Blasius, Mathematical Modelling, University of Oldenburg (host: Jamileh Javidpour)

Modeling of complex natural systems at the interface of theoretical biology, ecology, biogeochemistry, and applied mathematics


3 March, 2016 - 1pm (c.t.)

Dr. Miguel Frada,The Interuniversity Institute for Marine Sciences in Eilat & The Hebrew University of Jerusalem (Host: Tal Dagan)

Phenotypic plasticity underlies escape from viruses in a marine phytoplankton


10 March, 2016 - 1 pm (c.t.)

Dr. Mridul Thomas, ETH Zürich, Schweiz (Host: Thorsten Reusch)

Phytoplankton traits across space and time - Linking environmental variation with community patterns


17. März 2016 - 1 pm (c.t.)

Dr. Florian Altermatt, University of Zurich/Eawag (host: Birte Matthiessen)

Diversity patterns and dispersal processes in riverine metacommunities

Research units seminars


RD3 mission: Ocean’s biological diversity drives ecosystems and biogeochemical cycles. A deeper knowledge on existing diversity, the associated processes and the reactions to environmental perturbation is needed to project future changes, and to guide sustainable use of biological resources.

These are a few key questions that scientists of RD3 are addressing:

  • How will species interactions and marine communities be reorganized under multiple environmental changes, including invasion pressure and novel pathogens?
  • How will ecosystem biodiversity, functioning and services (for example, productivity, carbon sequestration, nutrient retention) change in response to perturbations and re-organization (due to range shifts /species introductions)? What are the relative contributions of evolutionary change, physiological plasticity and community restructuring to overall ecological response to global change?
  • What are novel marine resources in terms of genetic/genomic resources and marine organism and substances that can be utilized for human application? How can we sustainably use marine resources by understanding the biology of the exploited species in order to minimize effects on population sizes and biodiversity and the affected habitats?

Research groups

Twenty research groups reflect the diversity of research conducted in GEOMAR Marine Ecology.  Move the cursor on the individual research group icon to obtain additional info. Click on the icon to follow the links to the group websitet.

Marine Evolutionary Ecology
Thorsten Reusch
Marine Chemical Ecology
Florian Weinberger
Stress Ecology
Martin Wahl
Oceanic nekton / deep-sea biology
Uwe Piatkowski
Marine Biodiversity group
Birte Matthiessen
Marine speciation
Oscar Puebla
Marine natural products chemistry
Deniz Tasdemir
Mark Lenz
Animal Ecophysiology
Frank Melzner
Invasion Ecology
Elizabeta Briski
Larval Fish Ecology
Catriona Clemmesen-Bockelmann
Jellyfish Ecology
Jamileh Javid Mohammad Pour
Marine Trophodynamics
Stefanie Ismar
Parental investment and immune dynamics - Olivia Roth
Food web modelling
Marco Scotti
Polar ecology
Dieter Piepenburg
Plankton: competition and trophic interactions - Ulrich Sommer
Marine Microbiology
Johannes F. Imhoff
Rainer Froese
Molecular Microbial Ecology
Ute Hentschel Humeida



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RD3 News

Seagrass Zostera marina in the Kiel Bay. Photo: Thorsten Reusch, GEOMAR

Genome of the flowering plant that returned to the sea

Multinational science team studied the Evolution of Zostera marina

Gracilaria vermiculophylla and its native feeding enemy Littorina brevicula. Photo: F. Weinberger, GEOMAR.

Increased toxicity due to migration?

An invasive seaweed amplifies its defensive capacity