endangered species in Europe, and of the oyster reef ecosystem at selected sites in the German North Sea. The following objectives are in focus: Establish a pilot oyster reef in the “Borkum Reef ground” [...] technologies Development of a work frame for further oyster restoration measures in the German North Sea Exclusive Economic Zone (guideline) Pilot tests in the nature reserve “Helgoländer Felssockel” The [...] rates to those in the RESTORE preliminary study ? Are they adapted to the new habitat in the deep North Sea? Do they survive there? When do the oysters reach sexual maturity? In addition to the oysters themselves

glacier in North East Greenland? To answer this question we needed the bathymetry at the shelf edge of 79th glaciers As ships cannot access this area, we planned a 36 km seismic cross line on the sea ice. This [...] allowed us to collect CTD profiles (Conductivity, Temperature, Density) of the seawater. To get reliable sea ice conditions we left early, in April 2016. Conditions were cold, -25°C to -40°C causing hardware

stops to prevent barotrauma of the fish. The sea bass can tolerate temperatures in the North Sea, but the average temperature of 10 ° C in the North Sea is below its optimum temperature range for growth [...] kelp is farmed using an extensive fixed off-bottom longline technique in the Baltic Sea as well as in tanks in the North Sea. Dulse Dulse, Palmaria palmata , is an edible red algae (Rhodophyta) from the upper [...] upper subtidal of the rocky coasts of the Atlantic from Greenland to Portugal and the North Sea. It is traditionally eaten dried in France, Ireland, Iceland and Canada, and is a source of minerals, vitamins

25 September - 1 October 2017
This week started with a disappointment. As a result of very dense sea ice coverage we were unable to recover 3 moorings deployed near the northern edge of the embayment [...] observe the circulation at the transition from Norske Trough in the south to Westwind Trough in the north.

transect, Polarstern bit its way through heavy sea ice, hard as concrete and covered with a thick layer of snow. This altogether slowed down our progress into the north significantly. During our journey in the

and involving the Alfred Wegener Institute has discovered an important phenomenon under the Arctic sea ice that was previously thought to be impossible: So-called non-cyanobacteria can also fix nitrogen [...] conditions, which in turn could have an impact on the food web and the carbon budget in the cold north, as the researchers now report in the journal Communications Earth and Environment .

OLAMUR Offshore Low-Trophic Aquaculture in Multi-use Scenario Realisation in North and Baltic Seas Find out more Mak-Pak Scale-Up Mak-Pak Scale-Up stands for "Industry-compatible process optimisation for [...] Development of a growth monitoring system for marine invertebrates on test bodies Find out more SafeSeaPack The effect of macroalgae packaging on aquatic ecosystems. Find out more NOVAFOODIES Innovative [...] Assessment Life Cycle Assessment of land-based seaweed cultivation for packaging material. Find out more SeaStrains Culture collections are maintained to protect macroalgal diversity Find out more

summer insolation forces meltwater discharge from the ice sheets into the polar seas which subsequently enhances formation of sea ice during the winter. In the second case, growth of continental ice enhances [...] Heinrich events and their signature in the North Atlantic. Dear Hartmut, we have largely benefited from your unexpected finding of ice rafted debris in the North Atlantic Ocean. It inspired many researchers [...] our section. Go to: Home Research focus Tools Projects Publications Teaching & Outreach Team Deep-sea sediment cores recovered from the Northeast Atlantic Ocean were examined in order to elucidate the

important ones were the Laurentide Ice Sheet on North America, the Svalbard-Barents Sea Ice Sheet on Svalbard and on the subaerially exposed Barents Sea as well as the East Siberia-Chukchi Ice Sheet. During [...] sheets reached far into the Arctic Ocean, and signs of glacial overprint can be found as far north as at the North Pole. Many studies have shown that the onset of the Northern Hemisphere glaciation started [...] interest due to their sensitive response to global warming. Melting ice sheets would cause a significant sea-level rise which, in turn, would severely threaten low-lying coastal areas. In order to better understand

temperatures for multiple years along the Greenwich meridian from North (left) to South (right). Vertical extent from the sea surface (top) to the sea floor (white). Fig. 8: Ocean temperatures near the ocean bottom [...] rn-most extent of the Weddell Gyre, where at least some of the AABW is believed to escape to the North. Along with (electronic) CTD measurements, water samples are collected throughout the water column [...] and carbon constituents. Measurements of Total CO 2 in the Surface and Bottom Waters of the Weddell Sea, reveal a steady CO 2 increase, of likely anthropogenic origin, as surface water, charged with ant