the (sub-) polar North Atlantic (Fram Strait, Greenland Sea, Baffin Bay) and their changes through late Quaternary times. Of special interest will be the interrelationship between sea-ice cover, meltwater [...] Arctic sea ice variability, a crucial indicator or ‘canary in the coal mine’ for the Arctic and global climate state. If greenhouse gas emissions remain unchecked and further increase, summer sea ice loss [...] draining into the Amundsen Sea, the Pine Island and Thwaites glaciers. If these two major ice streams continue retreating into the deep inner basins, they would raise the global sea level by ~1.5 m. In order

of the AWI Section Shelf Sea System Ecology includes: Impacts of natural and non-natural variability and changes in communities in the water column and on the bottom of the sea. How individual organisms [...] research fleet for coast research Find out more News News, events and activities Find out more AWI North Sea Office Communication of scientific knowledge Find out more Guest Research & Student Courses Research [...] laboratory Find out more Long-term Observations (LTO) Analysis of long-term ecological changes in the North Sea Find out more

Arctic Seas) COSYNA cabled underwater observatory Helgoland (Photo: Alfred Wegener Institut) COSYNA is an observing system comprising several land and sea-based sensor systems in the North Sea and in the [...] is the North Sea, were more than 80 % of the coastline is already artificially protected. In 2010, the Centre for Scientific Diving of the AWI has installed an underwater experimental field North of Helgoland [...] the Arctic. The AWI contributes to COSYNA with two cabled underwater observatories in the North Sea (Helgoland) and in the Arctic (Kongsfjord Spitzbergen). Both systems are part of the Helmholtz Observatory

I O N Free-floating Sargassum is a fast-growing macroalga native to the Sargasso Sea, in the middle of the tropical North Atlantic. In 2011, this alga escaped its natural open ocean habitat and has since [...] “Global warming” I “It sucks when they take so long to clean the sea, they do their best but sometimes it's too much sargassum to clean the sea.” J “From my childhood to the present the sargassum has its seasons [...] 1 Report on the sea4soCiety Sargassum Population Survey in Quintana Roo, Mexico, July 2022 Authors: Dr. Miriam Philippi, Dr. Mar Fernández-Méndez Alfred Wegener Institute, Helmholtz Centre for Polar and

Ecosystems , CSLN , University of Skövde , Technische Universität Dresden Funding: EU-Interreg North Sea Region News Would you like to participate in researching the right control strategy against the [...] Funding This project receives funding under the Grant Agreement Number 41-2-51-22 from the Interreg North Sea Programme co-funded by the European Union. [...] their claws. Every year in autumn, hundreds of thousands of adult crabs make their way back to the sea to spawn, where they die exhausted after reproduction. This mass occurrence of crabs has consequences

Migration of Pelagic and Mesopelagic Scatterers From ADCP Backscatter Data in the Southern Norwegian Sea B. Cisewski*, H. Hátún, I. Kristiansen, B. Hansen, K.M.H. Larsen, S. Káradóttir Eliasen and J.A. Jacobsen [...] averages as red line and 7 days running mean as black line), (b) monthly averaged transports of Modified North Atlantic Water (MNAW) in the Faroe Current, (c) monthly transport-averaged temperature of the MNAW

edulis in the German North Sea and reasons for its extirpation The historical distribution of the oyster in today's German North Sea extended to the North and East Frisian Wadden Sea, Helgoland Oyster Bed [...] certainly responsible (BOOS et al., 2004). The very large stocks of "deep sea oysters" or "North Sea oysters" of the southern North Sea were first discovered in the mid-19th century. Regarding the actual extent [...] of the European Oyster – Restoration in the North Sea 12 In any case, the oyster deposits in the southern North Sea were much larger than that in the Wadden Sea. Historical German fishing maps show large

Composition, assimilation and degradation of Phaeocystis globose-derived fatty acids in the North Sea . Journal of Sea Research . 50 (4). 271-283 Paper - Hamm, C. (2003): Kieselalgenschalen – Spielerei oder [...] Dubischar, C.D., Pakhomov, E.A., von Harbou, L., Hunt, B.P.V., Bathmann, U.V. (2011): Salps in the Lazarev Sea, Southern Ocean: II. Biochemical composition and potential prey value . Marine Biology . 159 (1). 15-24 [...] Dubischar, C.D., Pakhomov, E.A., Hunt, B.P.V., Hagen, W., Bathmann, U.V. (2011): Salps in the Lazarev Sea, Southern Ocean: I. Feeding Dynamics . Marine Biology . 158. 2009-2026 2000-2009 Chapter - Hamm, C

prevent the system from the destructive long-term impact of saltwater, cold temperatures, storms, sea-ice and icebergs for almost 6 years. Meanwhile some steel components were more or less gone due to [...] maintain the Spitsbergen Underwater Observatory ( www.awi.de/en/science/biosciences/shelf-sea-system-ecology/main-research-focus/cosyna/underwater-node-spitsbergen.html ). The observatory is now [...] conducted additional dives for other scientific institutes located in Ny Ålesund such as the Norwegian North Polar Institute (biological samples) and the Italian station, KingsBay and the Korean Polar Institute

At the AWI ice laboratories, part of an ice core from the North Greenland Ice Stream (NEGIS) is currently being tested. The core was collected during “EastGRIP”, a joint project involving several international [...] insights into the behaviour of ice streams and improve our grasp of how they could contribute to future sea-level rise. Another goal is to record past climatic conditions beneath the northeast section of the