News archive

Net, harvest, fishing, gear

Balanced Harvesting

A first modelling study on the implementation of the “Balanced Harvesting” approach to fisheries management in the Barents Sea.

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Mechanisms Underlying Recent Arctic Atlantification

Recent “Atlantification” of the Arctic is characterized by warmer ocean temperatures and a reduced sea ice cover. The Barents Sea is a “hot spot” for these changes, something which has broad socioeconomic and environmental impacts in the region. However, there is, at present, no complete understanding of what is causing the ocean warming.

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warm Atlantic water melts sea ice outside Svalbard

Warm Atlantic Water Explains Observed Sea Ice Melt Rates North of Svalbard

Warm Atlantic water (AW) that flows northward along the Svalbard west coast is thought to
transport enough heat to melt regional Arctic sea ice effectively. Despite this common assumption, quantitative requirements necessary for AW to directly melt sea ice fast enough under realistic winter conditions are still poorly constrained.

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The elusive sea ice edge

Last winter an almost forgotten sight presented itself to all those venturing the Barents Sea: sea ice as far south as Bjørnøya, equaling a sea-ice extent not seen since the eighties and nineties. Are you wondering how this is possible in times of global warming and a diminishing Arctic ice cap?

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Polar cod have become larger in the Barents Sea over the last 30 years

Polar cod is a key fish species, transferring energy from zooplankton to larger animals. Polar cod depend on sea ice for spawning and during the early parts of its life. Reduced ice cover may therefore influence the survival and growth of young polar cod directly through e.g. loss of predation refuge, and indirectly by e.g. affecting the abundance and availability of prey.

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Nansen Legacy annual report for 2019

We are proud to share a glimpse of our many project activities from 2019. The report highlights of the new scientific knowledge that has started to emerge. It presents some of our research activities, our scientists and recruits.

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Iskanten av Christian Morel

The Ever Moving Sea Ice

The Arctic sea ice is on the move all year. It expands to its maximum during March and reaches its minimum in September. The variation during the year, and from year to year, depends on wind, weather and ocean currents. But the Arctic is changing.

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research and fish

Sustainable Fisheries Management

SIDE EVENTS ARCTIC FRONTIERS  Organised by Marit Reigstad and Alf Hakon Hoel, UiT – the Arctic University of Norway. What does it take to manage fisheries sustainably? Drawing on experiences

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Do organisms find food when the sea ice retreats?

In times of climate change and retreating sea ice, important research questions are for example: How important are sea ice algae as a food source for organisms such as copepods, krill and fish? Are they affected by the sea ice retreat and if so, how will that affect the functioning of the Arctic ecosystem?

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Rig-work in the dark

As the polar night lowers over the Arctic, RV Kronprins Haakon is leaving the quay in Longyearbyen, heading towards the Arctic Ocean. For the next two weeks, the researchers and technicians on board will retrieve old and deploy new scientific measuring equipment in the sea area around Svalbard.

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Nansen Legacy to sample Russian waters

Vladimir Savinov, a researcher at Akvaplan-niva (APN), is among the scientific crew on the R/V Dalnie Zelentsy, a 55 m Russian ship conducting monitoring surveys in the eastern Barents Sea.

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Six years into the ice — and beyond

The Arctic’s once impenetrable ice cap is melting away, with profound consequences for everything from ocean circulation patterns to fish numbers and diversity. The Nansen Legacy Project, including NTNU biologists,

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The Barents Sea throughout the year

While you are still enjoying the warm summer and a rich selection of fruits and berries, a large-scale preparation for winter is happening further North. In the Northern Barents Sea

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FF Kronprins Haakon

Annual report 2018

Photo: Ann Kristin Balto / Norwegian Polar Institute The annual report for 2018 is ready, and can be downloaded here. The first year of the Nansen Legacy is successfully completed.

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The Nansen Legacy

Fridtjof Nansen set out to explore the Arctic Ocean with the research vessel Fram 126 years ago. His team of explorers and scientists returned from the ice three years later with new knowledge that changed our concepts and understanding of the Arctic Ocean, and made the Arctic part of Norwegian identity.

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Get to know RV Kronprins Haakon

Central to the fieldwork of the project is the research vessel Kronprins Haakon. It has been built to operate in challenging ice conditions, which means it can go further north and south than

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PhD positions

Two interesting PhD positions available in the Human Impact: Pollution task of the Nansen Legacy project, one at UiO and one at UNIS.

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ChAOS at sea with the Nansen Legacy

The UK-based project Changes of the Arctic Ocean Seafloor (ChAOS) joined the last Nansen Legacy research cruise with two scientists from the University of Leeds, UK. Mark Zindorf and Allyson Tessin describe their work and motivation to join the Nansen Legacy cruise.

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Nansen Legacy in Shanghai

The Arctic Frontiers Partnership Network seminar Green Solutions for a sustainable future took place in Shanghai recently, as part of the official Norwegian state visit to China.

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Dramatic shift to Atlantic climate in Arctic warming hotspot

The Arctic is about to shrink, shows a new study, as an important part of the Arctic Ocean shifts over to an Atlantic climate regime. The rapid climate shift occurs in the northern Barents Sea—the Arctic warming hotspot where the surface warming and loss of winter sea ice is largest in the entire Arctic.

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Testing Norways new icebreaker

“There are many bits and pieces that need to fall in place with a new vessel like “Kronprins Haakon”, as well as a large research project like the Nansen Legacy, but both the vessel as well as the project are run by many incredibly competent and hard-working persons”, says Nansen Legacy PI Marit Reigstad.

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Chasing waves

Ilker Fer heads the first cruise by the Nansen Legacy project equipped with a specially constructed glider and measuring tools.

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TV Documentary: True North

What is a oceanographic mooring? How do these supplement to the time series in the Arctic? How can these help us understand the changes happening when North Atlantic water that flows into the Arctic is warming, melting the sea ice and changing the delicate arctic ecosystems, currents and water masses?

Follow Nansen Legacy researcher, Arild Sundfjord and other members recover A-TWAIN moorings, adding to future time series and knowledge.

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A new short film: Why Atlantic fish are invading the Arctic

Who will win the battle of the Atlantification and ecological balance of the Arctic? The army from the North or the army from the south?

A new short film has been released by VOX, featuring both scientists Jørgen Berge and  Ireen Vieweg, from the Nansen Legacy  and research touching the topics of the project.

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