Gelatinous zooplankton from the Fram Strait region, Arctic Ocean (Photo: Mario Hoppmann/AWI) Gelatinous zooplankton, comprising cnidarians, ctenophores and tunicates, are known to be major [...] ARJEL: How diverse are gelatinous zooplankton communities in the Arctic Ocean? Since gelatinous zooplankton are fragile and easily fragmented, there are some biases associated with net and trawl sampling [...] studies with the secondary user projects “ICE-Jelly” on the Arctic campaign PS131 and “SO-Jelly” in the Southern Ocean during PS134. Finally, we also carry out trophic studies investigating the role

The Research Vessel Polarstern was in the Arctic for the past seven weeks. There, the summertime sea-ice extent declined by ca. 40 percent over the past 40 years – making it one of [...] Strait and in the marginal ice zone north of Svalbard, as well as ocean/glacier interactions off the coast of Greenland. Central research questions included how the ice conditions, ocean heat fluxes and ocean stratification determine sea-ice melt in the marginal ice zone (between the ice free waters and the dense pack ice) and how the melt

major new project will help benchmark biodiversity change in the Arctic Ocean and guide conservation efforts by identifying unique species and assessing their extinction risk. The research led by scientists

. (2018): Deep-sea benthic communities and oxygen fluxes in the Arctic Fram Strait controlled by sea-ice cover and water depth. Biogeosciences 15: 4849-4869. Braeckman, U., Janssen, F., Lavik, G., Elvert [...] , C., Wenzhöfer, F. (2018): Carbon and nitrogen turnover in the Arctic deep sea: in-situ benthic community response to diatom and coccolithophorid phytodetritus. Biogeosciences 15: 6537-6557. Pop Ristova [...] Schewe, I., Soltwedel, T. (2015): Benthic oxygen uptake in the Arctic Ocean margins - A case study at the deep-sea observatory HAUSGARTEN (Fram Strait). PLoS ONE 10(10): e01383. Boetius, A., Wenzhöfer

Kara Seas could bind up to 3.6 million metric tons of CO 2 in the Arctic deep sea for millennia. In this region alone, a previously unknown transport route uses the biological carbon pump and ocean currents

We know little about the fish stocks in the central Arctic Ocean, and what we know about the local ecosystem is insufficient to ensure sustainable management. In response, in June 2021 the Agreement to Prevent Unregulated High Seas Fisheries in the Central Arctic Ocean – which includes a moratorium on fishing in the region – entered into force. The European Union and nine other countries signed

has successfully completed more than 130 expeditions to the Arctic and Antarctic and offered a temporary home for thousands of researchers from Germany and around the globe. In the process, the [...] miles. The ship is currently on an expedition in the Southern Ocean.

Over the past 200 years, our planet’s oceans have absorbed more than a quarter of all anthropogenic carbon dioxide from the atmosphere. As a result, their acidity has increased [...] to pass, it could have far-reaching consequences for life in the ocean, as they report in the journal Nature.

the ice covering the Arctic Ocean, as well as to the sea ice in the Southern Ocean, surrounding the continent of Antarctica. On the other hand, ocean currents [...] overturning of the water masses in the two polar regions makes the Arctic and Southern Oceans key regions in the context of ocean circulation. At the AWI, we investigate the characteristics and role of [...] Strait between Greenland and Svalbard, the Eurasian sector of the Arctic Ocean, and the Weddell Sea in the Atlantic sector of the Southern Ocean. Contact Torsten Kanzow +49(471)4831-2913 E-Mail CV Publications

Polar bear mother and cup in the Arctic ocean Automatic Marine Mammal Mitigation by Infrared Imaging Use of loud seismic airguns and naval sonars in marine surveys is feared [...] 1563h operational Operation of FIRST-Navy infrared imager in the Arctic Ocean. (+) Successful operation of sensor for entire expedtion without any member of the IR team on board. (-) ANT 29.2 Nov 2012 - [...] in off-shore seismic and renewable energy construction settings. Arctic Ocean PS101 Sep-Oct 2016 Ship based operation of FIRST-Navy infrared imager on RV Polarstern. (+) Operational use to support