Recent additions

  • A first fecundity study of the female snow crab Chionoecetes opilio Fabricius, 1788 (Decapoda: Brachyura: Oregoniidae) of the newly established population in the Barents Sea 

    Danielsen, Hanna Ellerine Helle; Hjelset, Ann Merete; Bluhm, Bodil; Hvingel, Carsten; Agnalt, Ann-Lisbeth (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-11)
    The snow crab <i>Chionoecetes opilio</i> Fabricius, 1788 is a newly established species in the Barents Sea. Since the first individuals were recorded in 1996, the population has increased and a fishery was initiated in 2012. Mature female snow crab caught in the central Barents Sea were investigated with regards to fecundity. Ovigerous females (<i>N</i> = 185) ranged from 48 to 100 mm carapace width ...
  • Improved Environmental Status: 50 Years of Declining Fish Mercury Levels in Boreal and Subarctic Fennoscandia 

    Braaten, Hans Fredrik Veiteberg; Åkerblom, Staffan; Kahilainen, Kimmo Kalevi; Rask, Martti; Vuorenmaa, Jussi; Mannio, Jaakko; Malinen, Tommi; Lydersen, Espen; Poste, Amanda; Amundsen, Per-Arne; Kashulin, Nikolai; Kashulina, Tatiana; Terentjev, Petr; Christensen, Guttorm; de Wit, Heleen (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-14)
    Temporally (1965–2015) and spatially (55°–70°N) extensive records of total mercury (Hg) in freshwater fish showed consistent declines in boreal and subarctic Fennoscandia. The database contains 54 560 fish entries (n: pike > perch ≫ brown trout > roach ≈ Arctic charr) from 3132 lakes across Sweden, Finland, Norway, and Russian Murmansk area. 74% of the lakes did not meet the 0.5 ppm limit to protect ...
  • Transcriptomic analysis reveals dose-dependent modes of action of benzo(a)pyrene in polar cod (Boreogadus saida) 

    Song, You; Nahrgang, Jasmine; Tollefsen, Knut Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-21)
    Polar cod (<i>Boreogadus saida</i>) has been used as a model Arctic species for hazard assessment of environmental stressors such as polycyclic aromatic hydrocarbons (PAHs). However, most of the PAH studies using polar cod rely on targeted biomarker-based analysis thus may not adequately address the complexity of the toxic mechanisms of the stressors. The present study was performed to develop a ...
  • Infectious Disease Outbreak Associated with Supplementary Feeding of Semi-Domesticated Reindeer 

    Tryland, Morten; Nymo, Ingebjørg Helena; Sanchez Romano, Javier; Mørk, Torill; Klein, Joern; Rockström, Ulrika (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-18)
    Supplementary winter feeding of semi-domesticated reindeer (<i>Rangifer tarandus tarandus</i>) has become more common in Sweden and Norway due to reindeer pasture fragmentation and climatic conditions. With increased corralling and feeding, often associated with animal stress, increased animal-to-animal contact, and poor hygienic conditions, an altered range of health challenges and diseases may ...
  • Genetic changes caused by restocking and hydroelectric dams in demographically bottlenecked brown trout in a transnational subarctic riverine system 

    Klutsch, Cornelya; Maduna, Simo; Polikarpova, Natalia; Forfang, Kristin; Aspholm, Paul Eric; Nyman, Tommi; Eiken, Hans Geir; Amundsen, Per-Arne; Hagen, Snorre (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-29)
    Habitat discontinuity, anthropogenic disturbance, and overharvesting have led to population fragmentation and decline worldwide. Preservation of remaining natural genetic diversity is crucial to avoid continued genetic erosion. Brown trout (<i>Salmo trutta</i> L.) is an ideal model species for studying anthropogenic influences on genetic integrity, as it has experienced significant genetic alterations ...
  • A rapid preparation procedure for laser microdissection‑mediated harvest of plant tissues for gene expression analysis 

    Olsen, Stian; Krause, Kirsten (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-02)
    <p><i>Background - </i>Gene expression changes that govern essential biological processes can occur at the cell-specific level. To gain insight into such events, laser microdissection is applied to cut out specific cells or tissues from which RNA for gene expression analysis is isolated. However, the preparation of plant tissue sections for laser microdissection and subsequent RNA isolation usually ...
  • Incomplete degradation of lichen usnic acid and atranorin in Svalbard reindeer (Rangifer tarandus platyrhynchus) 

    Węgrzyn, Michał Hubert; Wietrzyk-Pełka, Paulina; Galanty, Agnieszka; Cykowska-Marzencka, Beata; Sundset, Monica Alterskjær (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-22)
    Previous studies of Eurasian tundra reindeer (<i>Rangifer tarandus tarandus</i>) in Norway indicate that their rumen microbiota play a key role in degrading lichen secondary metabolites. We investigated the presence of usnic acid and atranorin in faecal samples from Svalbard reindeer (<i>R. tarandus platyrhynchus</i>). Samples were collected in Bolterdalen valley together with vegetation samples ...
  • Seasonal dynamics of the marine CO2 system in Adventfjorden, a West Spitsbergen fjord 

    Ericson, Ylva; Chierici, Melissa; Falck, Eva; Fransson, Agneta Ingrid; Jones, Elizabeth Marie; Kristiansen, Svein (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-11)
    Time series of the marine CO<sub>2</sub> system and related parameters at the IsA Station, by Adventfjorden, Svalbard, were investigated between March 2015 and November 2017. The physical and biogeochemical processes that govern changes in total alkalinity (TA), total dissolved inorganic carbon (DIC) and the saturation state of the calcium carbonate mineral aragonite (Ω<sub>Ar</sub>) were assessed ...
  • Drones as a tool to monitor human impacts and vegetation changes in parks and protected areas 

    Ancin-Murguzur, Francisco Javier; Munoz, Lorena; Monz, Christopher; Hausner, Vera H. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-04)
    Increased visitation to protected areas could have adverse impacts on the conservation values in the protected areas, and therefore effective visitor monitoring methods are needed to meet the complex management challenges that arise. Collecting data on human impacts is highly time consuming, thus requiring more effective tools that allow for high-quality and long-term measurements. In this study, ...
  • Advection of Mesozooplankton Into the Northern Svalbard Shelf Region 

    Wassmann, Paul; Slagstad, Dag; Ellingsen, Ingrid H. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-14)
    The northern Svalbard shelf region is part of the Atlantic advective contiguous domain along which nutrients, phyto- and mesozooplankton are advected with Atlantic Water from the Norwegian Sea along the Norwegian shelf break and into the Arctic Ocean. By applying the SINMOD model, we investigated how much mesozooplankton may be advected into the northern Svalbard shelf region. We also compared this ...
  • Tidewater glaciers and bedrock characteristics control the phytoplankton growth environment in a fjord in the arctic 

    Halbach, Laura; Vihtakari, Mikko; Duarte, Pedro; Everett, Alistair; Granskog, Mats; Hop, Haakon; Kauko, Hanna Maria; Kristiansen, Svein; Myhre, Per Inge; Pavlov, Alexey K.; Pramanik, Ankit; Tatarek, Agnieszka; Torsvik, Tomas; Wiktor, Józef Maria; Wold, Anette; Wulff, Angela; Steen, Harald; Assmy, Philipp (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-31)
    Meltwater discharge from tidewater glaciers impacts the adjacent marine environment. Due to the global warming, tidewater glaciers are retreating and will eventually terminate on land. Yet, the mechanisms through which meltwater runoff and subglacial discharge from tidewater glaciers influence marine primary production remain poorly understood, as data in close proximity to glacier fronts are scarce. ...
  • A glimpse into the biogeography, seasonality, and ecological functions of arctic marine Oomycota 

    Hassett, Brandon T.; Thines, Marco; Buaya, Anthony; Ploch, Sebastian; Gradinger, R. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-20)
    High-latitude environments are warming, leading to changes in biological diversity patterns of taxa. <i>Oomycota</i> are a group of fungal-like organisms that comprise a major clade of eukaryotic life and are parasites of fish, agricultural crops, and algae. The diversity, functionality, and distribution of these organisms are essentially unknown in the Arctic marine environment. Thus, it was our ...
  • A way forward with eco evo devo: an extended theory of resource polymorphism with postglacial fishes as model systems 

    Skulason, Skuli; Parsons, Kevin J; Svanback, Richard; Räsänen, Katja; Ferguson, Moira M; Adams, Colin Ean; Amundsen, Per-Arne; Bartels, Pia; Bean, Colin W.; Boughman, Janette W.; Englund, Göran; Gudbrandsson, Johannes; Hooker, Oliver E.; Hudson, Alan G; Kahilainen, Kimmo Kalevi; Knudsen, Rune; Kristjánsson, Bjarni Kr.; Leblanc, Camille A-L; Jonsson, Zophonias; Ohlund, Gunnar; Smith, Carl; Snorrason, Sigurdur S (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-19)
    A major goal of evolutionary science is to understand how biological diversity is generated and altered. Despite considerable advances, we still have limited insight into how phenotypic variation arises and is sorted by natural selection. Here we argue that an integrated view, which merges ecology, evolution and developmental biology (eco evo devo) on an equal footing, is needed to understand the ...
  • Zooplankton communities associated with new and regenerated primary production in the Atlantic inflow north of Svalbard 

    Svensen, Camilla; Halvorsen, Elisabeth; Vernet, Maria; Franzè, Gayantonia; Dmoch, Katarzyna; Lavrentyev, Peter J.; Kwasniewski, Slawomir (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-05)
    The Arctic Ocean is changing rapidly with respect to ice cover extent and volume, growth season duration and biological production. Zooplankton are important components in the arctic marine food web, and tightly coupled to the strong seasonality in primary production. In this study, we investigate zooplankton composition, including microzooplankton, copepod nauplii, as well as small and large copepod ...
  • Documenting lemming population change in the Arctic: Can we detect trends? 

    Ehrich, Dorothée; Schmidt, Niels M.; Gauthier, Gilles; Alisauskas, Ray; Angerbjörn, Anders; Clark, Karin; Ecke, Frauke; Eide, Nina E.; Framstad, Erik; Frandsen, Jay; Franke, Alastair; Gilg, Olivier; Giroux, Marie-Andrée; Henttonen, Heikki; Hörnfeldt, Birger; Ims, Rolf A.; Kataev, Gennadiy D.; Kharitonov, Sergey P.; Killengreen, Siw T.; Krebs, Charles J.; Lanctot, Richard B.; Lecomte, Nicolas; Menyushina, Irina E.; Morris, Douglas W.; Morrisson, Guy; Oksanen, Lauri; Oksanen, Tarja; Olofsson, Johan; Pokrovsky, Ivan G.; Yu, Igor; Reid, Donald; Roth, James D.; Saalfeld, Sarah T.; Samelius, Gustaf; Sittler, Benoit; Sleptsov, Sergey M.; Smith, Paul A.; Sokolov, Alekstandr A.; Sokolova, Natalya A.; Soloviev, Mikhail Y.; Solovyeva, Diana V. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-22)
    Lemmings are a key component of tundra food webs and changes in their dynamics can affect the whole ecosystem. We present a comprehensive overview of lemming monitoring and research activities, and assess recent trends in lemming abundance across the circumpolar Arctic. Since 2000, lemmings have been monitored at 49 sites of which 38 are still active. The sites were not evenly distributed ...
  • Alien plants, animals, fungi and algae in Norway: an inventory of neobiota 

    Sandvik, Hanno; Dolmen, Dag; Elven, Reidar; Falkenhaug, Tone; Forsgren, Elisabet; Hansen, Haakon; Hassel, Kristian; Husa, Vivian; Kjærstad, Gaute; Ødegaard, Frode; Pedersen, Hans Christian; Solheim, Halvor; Stokke, Bård Gunnar; Åsen, Per Arvid; Åström, Sandra Charlotte Helene; Brandrud, Tor Erik; Elven, Hallvard; Endrestøl, Anders; Finstad, Anders Gravbrøt; Fredriksen, Stein; Gammelmo, Øivind; Gjershaug, Jan Ove; Gulliksen, Bjørn; Hamnes, Inger Sofie; Hatteland, Bjørn Arild; Hegre, Hanne; Hesthagen, Trygve H.; Jelmert, Anders; Jensen, Thomas Correll; Johnsen, Stein Ivar; Karlsbakk, Egil; Magnusson, Christer; Nedreaas, Kjell Harald; Nordén, Björn; Oug, Eivind; Pedersen, Oddvar; Pedersen, Per Anker; Sjøtun, Kjersti; Skei, Jon Kristian; Solstad, Heidi; Sundheim, Leif; Swenson, Jon; Syvertsen, Per Ole; Talgø, Venche; Vandvik, Vigdis; Westergaard, Kristine Bakke; Wienerroither, Rupert; Ytrehus, Bjørnar; Hilmo, Olga; Henriksen, Snorre; Gederaas, Lisbeth (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-03)
    We present the results of an inventory and status assessment of alien species in Norway. The inventory covered all known multicellular neobiota, 2496 in total, 1039 of which were classified as naturalised. The latter constitute c. 3% of all species known to be stably reproducing in Norway. These figures are higher than expected from Norway’s latitude, which may be due a combination of ...
  • Greenland Shark (Somniosus microcephalus) stomach contents and stable isotope values reveal an ontogenetic dietary shift 

    Nielsen, Julius; Christiansen, Jørgen Schou; Grønkjær, Peter; Bushnell, Peter G.; Steffensen, John Fleng; Kiilerich, Helene O.; Præbel, Kim; Hedeholm, Rasmus (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-04)
    Current knowledge on the feeding ecology of the Greenland shark (<i>Somniosus microcephalus</i>), a potential top predator in arctic marine ecosystems, is based on small sample sizes as well as narrow size ranges of sharks. Therefore, potential size-related feeding patterns remain poorly documented. Using stomach content data (<i>N</i> = 88) and stable isotope values of white muscle tissue (<i>N</i> ...
  • Dead or Alive; or Does It Really Matter? Level of Congruency Between Trophic Modes in Total and Active Fungal Communities in High Arctic Soil 

    Wutkowska, Magdalena; Vader, Anna; Mundra, Sunil; Cooper, Elisabeth J.; Eidesen, Pernille Bronken (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-08)
    Describing dynamics of belowground organisms, such as fungi, can be challenging. Results of studies based on environmental DNA (eDNA) may be biased as the template does not discriminate between metabolically active cells and dead biomass. We analyzed ribosomal DNA (rDNA) and ribosomal RNA (rRNA) coextracted from 48 soil samples collected from a manipulated snow depth experiment in two distinct ...
  • Efficient sampling for ecosystem service supply assessment at a landscape scale 

    Murguzur, Francisco Javier Ancin; Munoz, Lorena; Monz, Christopher; Fauchald, Per; Hausner, Vera Helene (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-19)
    Decision makers and stakeholders need high-quality data to manage ecosystem services (ES) efficiently. Landscape-level data on ES that are of sufficient quality to identify spatial tradeoffs, co-occurrence and hotspots of ES are costly to collect, and it is therefore important to increase the efficiency of sampling of primary data. We demonstrate how ES could be assessed more efficiently through ...
  • Rodent population cycle as a determinant of gastrointestinal nematode abundance in a low-arctic population of the red fox 

    Mørk, Torill; Ims, Rolf Anker; Killengreen, Siw Turid (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-22)
    We analyzed an 11-year time series (2005–2015) of parasite abundance for three intestinal nematode species in the red fox (<i>Vulpes vulpes</i>) as a function of the multi-annual rodent population cycle in low-arctic Norway, while correcting for other potential covariates that could influence prevalence and abundance. Rodents are paratenic and facultative intermediate hosts for the two Ascarididae ...

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