Nyhetsarkiv

polar-front-ecology
  • POMP project members at the GRC 2025: Karl Attard, Maya Dalby, Antoine Haddon, Sina Müller, Marit Reigstad, Eva Leu, Marlena Szeligowska (front), Mathieu Ardyna and Sebastien Guerin (Photo: Linda Rehder).

    The role of ice algae in the future Arctic carbon cycle - presentation at the Gordon Research Conference

    The Gordon Research Conference (GRC) on Polar Marine Science took place in Tuscany, Italy, March 9. - 14.. The conference topic was Sea Ice as a Nexus in Polar Seas Between the Ocean and the Atmosphere. Prof Marcel Babin was chairing the conference with Lisa Miller as vice chair.
    Akvaplan-niva was represented by Eva Leu who presented a poster about the role of Melosira arctica in the future A

  • Foto: Sünnje Basedow (UiT Norges Arktiske Universitet)

    Forskning i polarnatten med "Frankenstein"

    Av Sünnje L. Basedow, UiT Norges Arktiske Universitet (sunnje.basedow@uit.no)
    Vi er på forskningstokt med UiT’s forskingsfartøy "Helmer Hanssen" for å studere overvintrende dyreplankton og deres fordeling langs Polarfronten. Hvilke arter er aktive i mørketiden og hva er deres bidrag i næringskjeden? Er det noen forskjell i dyreplanktonets fordeling i de arktiske og atlantiske vannmassene på Pol

  • Gelatinous plankton, like the hydromedusa Aglantha and the comb jelly Mertensia are voracious predators on smaller zooplankton. They catch their prey using extendible tentacles with special stinging or sticky cells and haul in the catch.

    Not all zooplankton are copepods...

    By Fredrika Norrbin, UiT The Arctic University of Norway
    Did you know that tiny radiolarians, appendicularians living in temporary housing, and predatory arrow worms and jellyfish thrive in Arctic Seas in the Polar Night?
    Copepod populations decline during winter, because the primary (plant) production is on hold, and predators are active. We may think of fish as the main enemies of zooplank

  • An abundant catch of capelin south of the Polar Front (Photo: Malin Daase)

    Searching for macrozooplankton and fish in the Dark of Night

    By: Maxime Geoffroy, Frida Cnossen, Einat Sandbank, Ingvild Ytterhus Utengen, and Paul Renaud
    Part of the work conducted during the Polar Front campaign aims to understand the structure of pelagic communities across the Barents Sea Polar Front. These pelagic animals are comprised of fish living in the water column and macrozooplankton, drifting animals larger than 1cm. Pelagic animals play a c

  • Japanese-pancake-inspired' ice floes (Photo: Frida Cnossen)

    Pancakes in the polar night

    By: Ingvild Ytterhus Utengen and Frida Cnossen (Akvaplan-niva)
    Greetings from 78 degrees North! We are back in the Barents Sea to study trophic interactions around the Polar Front, collecting and identifying a variety of macrozooplankton and fish. However, this time we are also on an additional mission that was not relevant during the August cruise, but is interesting in this dark, cold, and st

  • Northern lights shine over the sea ice in the Barents Sea. Photo: Malin Daase

    Science, inspiration, and voyages of discovery

    By: Paul Renaud/Akvaplan-niva
    Why does a group of 17 researchers cut short their holidays and leave home to board a ship headed to the Barents Sea in the middle of the Polar Night? January is known for changeable and often violent weather as Polar low-pressure systems form rapidly and sweep across the area. The darkness is nearly complete up here, with only a couple hours of faint light in the

  • The research cruise team (Photo: Frida Cnossen/Akvaplan-niva).

    Science shines in the freezing cold winter Barents Sea

    By Rolf Gradinger, UiT The Arctic University of Tromsø
    January 3rd nineteen scientists from Norwegian, Canadian and Polish institutions embarked RV Helmer Hanssen for a two week long expedition into the Barents Sea. Our science mission is to evaluate the winter time activity of the marine food web, from tiny bacteria and microalgae to fish. We are specifically interested in understanding any bi

  • Sorting jellyfish (Photo: Frida Cnossen/Akvaplan-niva)

    Update from the polar front (jelly)fish group

    By Frida Cnossen and Ingvild Ytterhus Utengen, Akvaplan-niva
    Greetings from 78 degrees North! We have just spent 12 days on a research cruise for the PolarFront project onboard RV Helmer Hanssen collecting and identifying a variety of macrozooplankton and pelagic fish. We have also looked at fish stomachs and collected samples for stable isotope analysis to study trophic interactions.

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  • The northern fulmar (Photo: Lars Ursem)

    Arctic wildlife at polar front research cruise

    By MSc student Lars Ursem (lars.ursem@wur.nl)
    When writing this it has been over a week since I left Tromsø to go on this research cruise to the polar front. Unfortunately, we do not have a dedicated marine mammal and seabird survey going on onboard as we have encountered a lot of wildlife over the past few days.
    In terms of birds there is, of course, the “normal” stuff with northern fulmar

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