Blar i forfatter "Falk-Petersen, Stig"

Viser treff 21-28 av 28

    • Retention of ice-associated amphipods: possible consequences for an ice-free Arctic Ocean 

      Berge, Jørgen; Varpe, Øystein; Moline, Mark A.; Wold, A; Renaud, Paul; Daase, Malin; Falk-Petersen, Stig (Journal article; Tidsskriftartikkel; Peer reviewed, 2012-09-12)
      Recent studies predict that the Arctic Ocean will have ice-free summers within the next 30 years. This poses a significant challenge for the marine organisms associated with the Arctic sea ice, such as marine mammals and, not least, the iceassociated crustaceans generally considered to spend their entire life on the underside of the Arctic sea ice. Based upon unique samples collected within ...

    • Seasonal and diel vertical migration of zooplankton in the High Arctic during the autumn midnight sun of 2008 

      Rabindranath, Ananda; Daase, Malin; Falk-Petersen, Stig; Wold, Anette; Wallace, M.I.; Berge, Jørgen; Brierley, A. S. (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      The diel vertical migration (DVM) of Calanus (Calanus finmarchicus, Calanus glacialis and Calanus hyperboreus) and Metridia longa was investigated in August 2008 at six locations to the north and northwest of Svalbard (Rijpfjorden, Ice, Marginal Ice Zone, Shelf break, Shelf and Kongsfjorden). Despite midnight sun conditions, a diel light cycle was clearly observed at all stations. We collected data ...

    • Seasonal ecology in ice-covered Arctic seas - Considerations for spill response decision making 

      Aune, Magnus; Aniceto, Ana Sofia; Biuw, Martin; Daase, Malin; Falk-Petersen, Stig; Leu, Eva; Ottesen, Camilla; Sagerup, Kjetil; Camus, Lionel (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-05)
      Due to retreating sea ice and predictions of undiscovered oil and gas resources, increased activity in Arctic shelf sea areas associated with shipping and oil and gas exploration is expected. Such activities may accidentally lead to oil spills in partly ice-covered ocean areas, which raises issues related to oil spill response. Net Environmental Benefit Analysis (NEBA) is the process that the response ...

    • Spring bloom dynamics in Kongsfjorden, Svalbard: nutrients, phytoplankton, protozoans and primary production 

      Hodal, helene; Kristiansen, Svein; Hop, Haakon; Falk-Petersen, Stig; Reigstad, Marit (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      The marine ecosystem in Kongsfjorden (79 N), a glacial fjord in Svalbard, is to a large extent well known with regard to hydrography, mesozooplankton and higher trophic levels. Research on primary production and lower trophic levels is still scare and especially investigations from winter and spring periods. The spring bloom dynamics in Kongsfjordenwere investigated in 2002. The development in ...

    • Tiny but fatty: Lipids and fatty acids in the daubed shanny (Leptoclinus maculatus), a small fish in Svalbard waters 

      Murzina, Svetlana; Pekkoeva, Svetlana N.; Kondakova, Ekaterina A.; Nefedova, Zinaida A.; Filippova, Kseniia A.; Nemova, Nina N.; Orlov, Alexei M.; Berge, Jørgen; Falk-Petersen, Stig (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-28)
      The seasonal dynamic of lipids and their fatty acid constituents in the lipid sac and muscles of pelagic postlarval <i>Leptoclinus maculatus</i>, an ecologically important fish species in the Arctic food nets, in Kongsfjord, Svalbard waters was studied. The determination of the qualitative and quantitative content of the total lipids (TLs), total phospholipids (PLs), triacylglycerols (TAGs), cholesterol ...

    • Variability and decadal trends in the Isfjorden (Svalbard) ocean climate and circulation – An indicator for climate change in the European Arctic 

      Skogseth, Ragnheid; Olivier, Léa L.A.; Nilsen, Frank; Falck, Eva; Fraser, Neil J.; Tverberg, Vigdis; Ledang, Anna Birgitta; Vader, Anna; Jonassen, Marius Opsanger; Søreide, Janne; Cottier, Finlo Robert; Berge, Jørgen; Ivanov, Boris V.; Falk-Petersen, Stig (Journal article; Tidsskriftartikkel; Peer reviewed, 2020)
      Isfjorden, a broad Arctic fjord in western Spitsbergen, has shown significant changes in hydrography and inflow of Atlantic Water (AW) the last decades that only recently have been observed in the Arctic Ocean north of Svalbard. Variability and trends in this fjord’s climate and circulation are therefore analysed from observational and reanalysis data during 1987 to 2017. Isfjorden experienced a ...

    • Warming of Atlantic Water in two west Spitsbergen fjords over the last century (1912-2009) 

      Pavlov, Alexey K.; Tverberg, Vigdis; Ivanov, Boris; Nilsen, Frank; Falk-Petersen, Stig; Granskog, Mats A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      The recently observed warming of west Spitsbergen fjords has led to anomalous sea-ice conditions and has implications for the marine ecosystem. We investigated long-term trends of maximum temperature of AtlanticWater (AW) in two west Spitsbergen fjords. The data set is composed of more than 400 oceanographic stations for Isfjorden and Grønfjorden (78.18N), spanning from 1876 to 2009. Trends ...

    • Zooplankton in Svalbard fjords on the Atlantic–Arctic boundary 

      Gluchowska, Marta; Kwasniewski, Slawomir; Prominska, Agnieszka; Olszewska, Anna; Goszczko, Ilona; Falk-Petersen, Stig; Hop, Haakon; Weslawski, Jan Marcin (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-07-01)
      Zooplankton abundance and community structures were studied in three west Spitsbergen fjords at the beginning of the warm phase, which seem to have entered in 2006. Sampling was conducted in summer 2007 at stations distributed along transects in Hornsund, Isfjorden and Kongsfjorden. Variations in zooplankton standing stocks and community structures (assessing taxonomic diversity and zoogeographical ...