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News archive - September

Published: 23.09.2015

Out of shape mackerel

In recent years, mackerel stocks have been thriving, both in terms of their numbers and distribution. However, a new study of over 25,000 mackerel has found that the individual mackerel are not doing so well. They are growing more slowly and have become thinner, probably due to tough competition for food within the population.

Published: 21.09.2015
Midway evaluation

Panel impressed at midway evaluation

- The competence of the research team is high and many of the senior scientists are among the world leading actors in their fields. We were impressed by many aspects of this project. The work programme is very relevant and timely. 
Published: 19.09.2015 - Updated: 21.09.2015

Hunting a giant Arctic fish

In recent weeks, the Institute of Marine Research (IMR) has put considerable effort into the annual Arctic Ocean survey in the area north of Svalbard. With RV “Helmer Hanssen” as the platform, the marine ecosystem was upended and samples and measurements were taken of everything from the chemical composition of microscopic amphipods to jellyfish, fish fry and larger fish such as cod and redfish.

Published: 09.09.2015 - Updated: 02.10.2015
Cruise participants

Mission Accomplished — yet another successful cruise!

During the course of two weeks the biology and geology was mapped at 73 locations along the shelf edge west of the town Sandnessjøen  at depths ranging between 220 and 760 meters. At 14 of these sites, a total of 83 bottom samples were collected using grabs, cores, sleighs, and beam trawls. At all sites the seafloor was investigated and documented using the Chimaera video rig (Chimaera is the Latin name for the rabbit fish/rat fish).

Published: 08.09.2015 - Updated: 02.10.2015
The Pearl Chain Reef

New coral reefs discovered off Northern Norway

During the past two weeks of the MAREANO (Marine AREA database for NOrwegian coastal and sea areas) expedition, several new coral reefs have been discovered. One of them is Pearl Chain Reef (Perlekjederevet) that was found west of the town Sandnessjøen,  at a depth of approximately 290 meters. This is a narrow coral reef complex extending over a kilometer in length.

Published: 07.09.2015

“Johan Hjort ” on whale safari

Cruise diary: On board ”Johan Hjort” there are two whale observers that register whales along the cruise tracks, as long as the weather permits. When it is rough seas or fog, then the registering stops.
On the 28th August we came to an area a little south from Hopen island with a large concentration of humpback whales.

Published: 06.09.2015

Fish diversity north of Svalbard

Cruise diary: The oceans are full of fish. With nearly 35.000 species described all over the world, fish are the most diversified group of vertebrates. The finding of a new undescribed species is still not a past activity for researchers working in fish systematics; about 200–300 new species are described yearly in the world.

Published: 03.09.2015
Sediment core

Looking for pollution in the Norwegian Sea

The ongoing MAREANO cruise has finished surveying the shelf edge south of Skjoldryggen at the mid-Norwegian shelf, and is now concentrating on the shelf edge between Skjoldryggen and Trænadjupet. Sediment samples have been collected from ten locations, including five with multicorer.

Published: 02.09.2015 - Updated: 30.09.2015

Radioactive contamination in the Barents Sea

The Barents Sea has been contaminated by radioactive waste for half a century. The main sources are fallout from atmospheric nuclear tests in the 1950s and 1960s, emissions from European nuclear fuel reprocessing plants (Sellafield and La Hague) and the Chernobyl accident.

Published: 01.09.2015

The deep-sea seapen Umbellula: cheek to cheek in the deep sea

Cruise diary: One of the most spectacular creatures that we occasionally encounter down in the deep, cold ocean is the deep-sea seapen Umbellula encrinus. This spectacular organism, resembling a giant plant or exploding fireworks is in actual fact a colony of giant polyps, which are collected in a crown perched atop a stem, of sorts.