Further Information

LightHAB (HE 448)

Understanding of HAB dynamics by assessmentof  of oceanographic and hydrographic conditions, bio-optical sensing. Determination of  biodiversity of toxigenic phytoplankton and trophic transfer of toxic dinoflagellates to their protistan grazers. Site comparison among differnt fjord systems.

In cooperation with the ICBM.

SAMOC (Puerto Deseado)

It is the aim of the expedition to investigate the mechanistic interplay between the occurrence of microplanktonic species, mirco- and nanoparticles (bacteria, viruses, detritus) and macromolecules in the water column and sediments of the Southwestern Antlantik using an interdisciplinary approach. Results will be relevant for aspects of fisheries and human helth.

In cooperation with the IADO (Instituto Argentino De Oceanografía).

Drake Transect (Puerto Deseado)

This expedition investigates the occurrence and distribution of toxigenic plankton between subpolar regions of the South Atlantic and the Southern Ocean and ist correlation to oceanographic and hydrodynamic parameters.

In cooperation with the IADO (Instituto Argentino De Oceanografía).

GreenHAB II (M.S. Merian)

The project “GreenHAB II” expedition will investigate the interactions between hydrography, bio-optics, and planktonic composition (especially toxigenic algae and their toxins) in combination with metagenomic approaches in fjords of West Greenland as well as along a latitudinal transect along the West Greenland coast. These fjords differ in their ice cover, glacial melt water runoffs, and history. The results shall be used to estimate quantifiable effects on the ecosystem which are driven by an accelerated glacial melt water runoff. The occurrence of toxigenic algal species which can be favored by decreasing salinity and increasing temperature shall be investigated with chemo-analytical, metagenomic, and bio-optical methods. In addition, sediments shall be examined for resting stages (cysts) of toxigenic planktonic species in order to estimate future population dynamics, including range expansions as waters warm. Levels of algal toxins shall be determined in algal material and the water column, partly directly on-board.

In cooperation with the ICBM, Universität Kopenhagen, WHOI, Universidad Mayor und PUC Santiago de Chile.


Addressing knowledge gaps on pteropods in Kongsfjorden: distribution patterns and pathways in lipid metabolism.

In cooperation with GEOMAR & UNIS

PS 100 Polarstern

Nutrient analysis, DOC, Isotopes.

Further information: www.geotraces.org

MECAF (Maria S. Merian)

Molecular ecological chemistry in Arctic fjords at different stages of deglaciation.


Study area: Greenland Sea; Longyearbyen - Reykjavik

July 2016

contact: Boris Koch, Uwe John

Global change causes fundamental environmental changes in the Arctic. Increasing temperatures result in melting of Arctic glaciers and the increasing freshwater discharge inevitably leads to changes in fjord systems. Our proposed study thus aims at two topics: (i) changes of the phyto and bacterioplankton diversity along salinity gradients in Arctic fjords and (ii) the impact of such changes on biogeochemical fluxes and chemical modification of organic substrates and metabolites. For this we seek to study three Fjord systems (Arnarfjörður, Iceland; Scoresby Sund, Greenland and Kongsfjord, Svalbard), which differ in the degree of the available scientific knowledge, their size and extend of freshwater input and their biogeochemical settings.