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  • Can a key boreal Calanus copepod species now complete its life-cycle in the Arctic? Evidence and implications for Arctic food-webs 

    Tarling, Geraint A.; Freer, Jennifer J.; Banas, Neil S.; Belcher, Anna; Blackwell, Mayleen; Castellani, Claudia; Cook, Kathryn B.; Cottier, Finlo Robert; Daase, Malin; Johnson, Magnus L.; Last, Kim S.; Lindeque, Penelope K.; Mayor, Daniel J.; Mitchell, Elaine; Parry, Helen E.; Speirs, Douglas C.; Stowasser, Gabriele; Wootton, Marianne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-29)
    The changing Arctic environment is affecting zooplankton that support its abundant wildlife. We examined how these changes are influencing a key zooplankton species, Calanus finmarchicus, principally found in the North Atlantic but expatriated to the Arctic. Close to the ice-edge in the Fram Strait, we identified areas that, since the 1980s, are increasingly favourable to C. finmarchicus. Field-sampling ...
  • Ny teknologi gjør frossenfisken fersk 

    Trondsen, Torbjørn (Chronicle; Kronikk, 2016-01-14)
    En ny teknologi for opptining av fisk gjør det mulig å gjenvinne fersk kvalitet dersom fisken er frosset helt fersk. Det muliggjør overføring av oversjøisk transport av laks og ørret fra fly til skip, noe som kan redusere de norske klimagassutslippene med anslagsvis 800.000 tonn.<p> <p>Tineteknologien er EU­patentert av det norskeide tyske selskapet Coolnova UG. Blodferske fiskeprodukter kan ...
  • Breeding den selection by Arctic foxes (Vulpes lagopus) in southern Yamal Peninsula, Russia 

    Hofhuis, Stijn; Ehrich, Dorothee; Sokolova, Natalia A.; van Hooft, Pim; Sokolov, Aleksandr A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-02)
    Selecting the right location for a den during the breeding season is a type of habitat selection in the Arctic fox (Vulpes lagopus) that is likely to affect its reproductive success. A den’s suitability likely depends on its ability to provide shelter, as well as its proximity to prey resources. Depending on the different relative risks that Arctic foxes may face across their broad circumpolar range, ...
  • Doublespeak? Sustainability in the Arctic—A Text Mining Analysis of Norwegian Parliamentary Speeches 

    Moilanen, Mikko; Østbye, Stein (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-21)
    This paper contributes to the recent literature on sustainability in the Arctic as a political concept. Parliamentary proceedings have increasingly been recognized as an important source of information for eliciting political issues. In this paper, we use unsupervised text mining techniques to analyze parliamentary speeches for Norway from the period from 2009 to 2016 to answer whether political ...
  • Exploring fishery history in game form: ‘Never again April 18!’ 

    Weines, Jørn (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-02)
    This article studies the ways in which Norwegian fishery history can be explored through games. Using the 1989 closure of the Norwegian coastal cod commons as a case study, issues related to historical thinking and game studies are discussed. The main focus is on understanding history through serious games, but theoretical considerations for presenting the case in any game format are discussed. The ...
  • Toward understanding three phases of individual responses to paradox 

    Birkelund, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-07)
    Purpose - The purpose of this study is to further paradox research at the individual level through applying a framework of three phases of individual response to paradox – recognition, understanding and behaviour.<p> <p>Design/methodology/approach - Critical and integrative review of previous studies of individual responses to paradox.<p> <p>Findings - The role of individual understanding is ...
  • Bycatch reduction and alternative exploitation patterns in demersal trawl fisheries of the Baltic Sea and the North Sea 

    Santos, Juan (Doctoral thesis; Doktorgradsavhandling, 2021-12-17)
    <p>In the Baltic Sea and North Sea, the sustainability of bottom-trawl fisheries is threatened by many issues, such as the impact of climate change on exploited demersal stocks, long-term overfishing, and the European Landing Obligation for quoted species. This thesis identifies challenges to bycatch and harvesting patterns of targeted species in four relevant Baltic Sea and North Sea bottom-trawl ...
  • Have environmental preferences and willingness to pay remained stable before and during the global Covid-19 shock? 

    Hynes, Stephen; Armstrong, Claire W.; Bui, Bich Xuân; Ankamah-Yeboah, Isaac; Tinch, Robert; Ressurreição, Adriana (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-07)
    This study tests the stability of environmental preferences and willingness to pay (WTP) values using a discrete choice experiment (DCE) across three countries pre and post the peak of the first wave of the Covid-19 pandemic. A DCE eamining the public’s preferences for alternative environmental management plans on the high seas, in the area of the Flemish Cap, was carried out in Canada, Scotland ...
  • Fatty acid profile of cooked leg meat and raw hepatopancreas of red king crab (Paralithodes camtschaticus) during three-month live holding without feeding at 5 and 10 °C 

    Lian, Federico; Siikavuopio, Sten Ivar; Harrison, Sabine M.; Vang, Birthe; Brunton, Nigel P.; Esaiassen, Margrethe; Lorentzen, Grete Elisabeth (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-06)
    The red king crab (RKC, Paralithodes camtschaticus) is a highly-valued decapod species. Typically, RKCs undergo a period of live holding (LH), often without feeding, in onshore facilities, allowing for flexible management before export to destination markets. This study aimed to (i) gain information on the fatty acid (FA) profile of the cooked leg meat and raw hepatopancreas obtained from RKC harvested ...
  • Effects of a wave power park with no-take zone on decapod abundance and size 

    Bender, Anke; Langhamer, Olivia; Molis, Markus; Sundberg, Jan (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-11)
    Past studies have revealed higher levels of biodiversity, total abundance, and size of individuals around offshore installations of renewable energy. This study investigated the effects of Lysekil wave power park (area 0.5 km2) on the abundance and carapace size of decapods at the Swedish west coast. For that purpose, decapods were caught with cages during four consecutive summers. Two types of ...
  • Issues of under-representation in quantitative DNA metabarcoding weaken the inference about diet of the tundra vole Microtus oeconomus 

    Neby, Magne; Kamenova, Stefaniya; Devineau, Olivier; Ims, Rolf Anker; Soininen, Eeva M (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-26)
    During the last decade, methods based on high-throughput sequencing such as DNA metabarcoding have opened up for a range of new questions in animal dietary studies. One of the major advantages of dietary metabarcoding resides in the potential to infer a quantitative relationship between sequence read proportions and biomass of ingested food. However, this relationship’s robustness is highly dependent ...
  • causalizeR: a text mining algorithm to identify causal relationships in scientific literature 

    Ancin Murguzur, Francisco Javier; Hausner, Vera Helene (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-20)
    Complex interactions among multiple abiotic and biotic drivers result in rapid changes in ecosystems worldwide. Predicting how specific interactions can cause ripple effects potentially resulting in abrupt shifts in ecosystems is of high relevance to policymakers, but difficult to quantify using data from singular cases. We present causalizeR (https://github.com/fjmurguzur/causalizeR), a text-processing ...
  • The effect of white and green LED-lights on the catch efficiency of the Barents Sea snow crab (Chionoecetes opilio) pot fishery 

    Cerbule, Kristine; Herrmann, Bent; Grimaldo, Vela Eduardo; Grimsmo, Leif; Vollstad, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-05)
    In commercial snow crab (Chionoecetes opilio) fishery, the catch efficiency of the conical pots is important for increasing the profitability of the industry. This study evaluated the effect of adding green and white light emitting diodes (LED) on the catch efficiency of commercially used conical pots. The results from the field experiments showed that inserting artificial lights significantly ...
  • Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population 

    Klutsch, Cornelya; Maduna, Simo; Polikarpova, Natalia; Forfang, Kristin; Beddari, Benedicte Lissner; Gjelland, Karl Øystein; Aspholm, Paul Eric; Amundsen, Per-Arne; Hagen, Snorre (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-30)
    Maintaining standing genetic variation is a challenge in human-dominated landscapes. We used genetic (i.e., 16 short tandem repeats) and morphological (i.e., length and weight) measurements of 593 contemporary and historical brown trout (Salmo trutta) samples to study fine-scale and short-term impacts of different management practices. These had changed from traditional breeding practices, using the ...
  • Forage quality in tundra grasslands under herbivory: Silicon-based defences, nutrients and their ratios in grasses 

    Petit Bon, Matteo; Inga, Katarina Gunnarsdotter; Utsi, Tove Aagnes; Jonsdottir, Ingibjørg; Bråthen, Kari Anne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-08)
    1. Herbivore-induced changes in both leaf silicon-based defence and nutrient levels are potential mechanisms through which grazers alter the quality of their own grass supply. In tundra grasslands, herbivores have been shown to increase nutrient contents of grasses; yet, it is an open question whether they also increase grass silicon-based defence levels. Here, we asked if, and to what extent, ...
  • Will borealization of Arctic tundra herbivore communities be driven by climate warming or vegetation change? 

    Speed, James David Mervyn; Chimal Ballesteros, Jesus Adrian; Martin, Michael David; Barrio, Isabel C.; Vuorinen, Katariina Elsa Maria; Soininen, Eeva Marjatta (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-30)
    Poleward shifts in species distributions are expected and frequently observed with a warming climate. In Arctic ecosystems, the strong warming trends are associated with increasing greenness and shrubification. Vertebrate herbivores have the potential to limit greening and shrub advance and expansion on the tundra, posing the question of whether changes in herbivore communities could partly mediate ...
  • Isoscape Models of the Southern Ocean: Predicting Spatial and Temporal Variability in Carbon and Nitrogen Isotope Compositions of Particulate Organic Matter 

    St. John Glew, Katie; Espinasse, Boris; Hunt, Brian P. V.; Pakhomov, Evgeny A.; Bury, Sarah J.; Pinkerton, Matt; Nodder, Scott D.; Gutiérrez-Rodríguez, Andres; Safi, Karl; Brown, Julie C. S.; Graham, Laura; Dunbar, Robert; Mucciarone, David A.; Magozzi, Sarah; Somes, Chris; Trueman, Clive N. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-30)
    Polar marine ecosystems are particularly vulnerable to the effects of climate change. Warming temperatures, freshening seawater, and disruption to sea-ice formation potentially all have cascading effects on food webs. New approaches are needed to better understand spatiotemporal interactions among biogeochemical processes at the base of Southern Ocean food webs. In marine systems, isoscapes (models ...
  • Antecedents of consumer evaluation and consumption of functional food 

    Nystrand, Bjørn Tore (Doctoral thesis; Doktorgradsavhandling, 2021-12-15)
    The overall aim of this dissertation is to improve the theoretical and empirical understanding of consumers’ behavioral tendencies toward functional food consumption. The main purpose is to provide a deeper understanding of antecedents that are relevant for explaining consumer evaluation of functional food and consumption behavior. Functional foods are food products that have been enriched to make ...
  • Relationships between functional food consumption and individual traits and values: A segmentation approach 

    Nystrand, Bjørn Tore; Olsen, Svein Ottar (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-06)
    This study aimed to identify, describe, and compare consumer segments based on food- and health-related values and traits and how the segments are related to functional food consumption. A hybrid hierarchical k-means clustering approach was used to identify homogeneous consumer segments based on food innovativeness, food self-control, hedonic eating values, convenience orientation, health importance, ...
  • Qualitative and Quantitative Comparison of Liquid–Liquid Phase Extraction Using Ethyl Acetate and Liquid–Solid Phase Extraction Using Poly-Benzyl-Resin for Natural Products 

    Schneider, Yannik Karl-Heinz; Andersen, Jeanette Hammer; Hansen, Espen; Jørgensen, Solveig M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-01)
    A key step in the process of isolating microbial natural products is the preparation of an extract from a culture. This step determines which molecules will be available for detection in the subsequent chemical and biological analysis of a biodiscovery pipeline. In the present study we wanted to document potential differences in performance between liquid–liquid extraction using ethyl acetate ...

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