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  • Biogeography of epibenthic assemblages in the central Beaufort Sea 

    Ravelo, Alexandra M.; Bluhm, Bodil; Foster, Nora; Iken, Katrin (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-27)
    Benthic communities change drastically in both biomass and community structure with increasing water depth on a global scale, attributed to a combination of food supply, environmental drivers, as well as physiological and competitive capacities. In the Arctic, benthic biogeographic patterns are additionally thought to be a result of the region’s glaciation history. Here, we investigate gross epibenthic ...
  • Effects of green tea- and amla extracts on quality and melanosis of Indian white prawn (Fenneropenaeus indicus, Milne Edwards, 1837) during chilled storage 

    Firdous, Aimen; Ringø, Einar; Elumalai, Preetham (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-28)
    Effect of ethanol extracts of green tea (Camellia sinensis L.) and amla (Phyllanthus emblica Linn) were investigated on quality and melanosis of chilled stored Indian white prawn (Fenneropenaeus indicus) during 28 days. Extracts were subjected to antioxidant assays viz.1,1-diphenyl-2-picryl hydrazyl radical reducing power methods (DPPH), total antioxidant capacity (TAC), total phenolic content (TPC) ...
  • New species of aquatic chytrids from Oman 

    Hassett, Brandon; Al-Shaibi, Badriya K.; Al-Nabhani, Abdulrahman; Al-Sadi, Abdullah M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-12)
    Oman is a desert country in the south of the Middle East. Springs and other water sources that harbor aquatic organisms can be separated by hundreds of kilometers. In Oct 2019, we isolated four freshwater aquatic fungi (Chytridiomycota) from benthic detritus baited with pine pollen on a general nutrient medium near Salalah, Oman. Database queries of nuc 28S rRNA (28S) and internal transcribed spacer ...
  • Feeding ecology and interactions of invasive vendace and DR whitefish in the Pasvik watercourse 

    Høstmark, Malin Solheim (Master thesis; Mastergradsoppgave, 2021-02-15)
    Introductions and invasions of species outside their natural range can have devastating effects on the native species and be a major driver of biodiversity change. When the zooplanktivorous vendace invaded the Pasvik watercourse in the 1990s, it quickly took over the ecological role of the native DR whitefish. In the upper part of the watercourse, DR whitefish was displaced from the pelagic habitat ...
  • Gastrointestinal nematodes in Icelandic reindeer (Rangifer tarandus tarandus) 

    Dembereldagva, Selengemurun (Master thesis; Mastergradsoppgave, 2021-01-18)
    Reindeer (<i>Rangifer tarandus</i>) are host to gastrointestinal-tract nematodes (GINs) throughout the world. Some populations of reindeer exist in almost complete isolation from others, and this can have a key influence on the species and infection rates of GINs. An example of an isolated reindeer population occurs in Iceland. In this study, I have investigated the prevalence of GINs in Icelandic ...
  • Adaptive niche-based sampling to improve ability to find rare and elusive species: Simulations and field tests 

    Chiffard, Jules; Marciau, Coline; Yoccoz, Nigel; Mouillot, Florent; Duchateau, Stéphane; Nadeau, Iris; Fontanilles, Philippe; Besnard, Aurélien (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-27)
    <ol> <li>Sampling efficiency is crucial to overcome the data crisis in biodiversity and to understand what drives the distribution of rare species.</li <li>Adaptive niche‐based sampling (ANBS) is an iterative sampling strategy that relies on the predictions of species distribution models (SDMs). By predicting highly suitable areas to guide prospection, ANBS could improve the efficiency of sampling ...
  • Novelty in tourism experiences: the influence of physical staging and human interaction on behavioural intentions 

    Blomstervik, Ingvild; Prebensen, Nina Katrine; Campos, Ana Claudia; Pinto, Patricia (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-15)
    Tourists’ tendency to choose new and different experiences and destinations is well known in tourism research and practice. By drawing on social exchange theory and service-dominant logic, the present study investigates how physical staging and human interaction influence behavioural intentions in experiences with varying levels of novelty. This relationship is tested using survey data collected ...
  • Nest association between two predators as a behavioral response to the low density of rodents 

    Pokrovsky, Ivan G.; Ehrich, Dorothee; Fufachev, Ivan A.; Ims, Rolf Anker; Kulikova, Olga; Sokolov, Aleksandr; Sokolova, Natalia; Sokolov, Vasiliy; Yoccoz, Nigel (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-04)
    Many birds nest in association with aggressive birds of other species to benefit from their protection against predators. We hypothesized that the protective effect also could extend to foraging resources, whereby the resultant resource-enriched habitats near a nest of aggressive raptors could be an alternative cause of associations between nesting bird species with non-overlapping foraging niches. ...
  • Interdependency in coordinating networked maintenance and modification operations 

    Engelseth, Per; Törnroos, Jan-Åke; Zhang, Yufeng (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-05)
    Purpose - The purpose of this research is to detect, through applying a process-based view, how to manage economisation of the maintenance and modification operations in offshore petroleum logistics operations.<p> <p>Design/methodology/approach - A single case study of engineering services, more specifically, maintenance and modification service operations, on a Norwegian Sea oil platform reveals ...
  • Phytoplankton community succession and dynamics using optical approaches 

    Fragoso, Glaucia Moreira; Johnsen, Geir; Chauton, Matilde Skogen; Cottier, Finlo Robert; Ellingsen, Ingrid H. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-04)
    The phytoplankton in coastal regions are responding to constant environmental changes, thus the use of proxies derived from in situ frequent time-series observations and validated from traditional microscopic or pigment methods can be a solution for detecting rapid responses of community dynamics and succession. In this study, we combined in situ high-frequency (every 30 min from May to September ...
  • The Transformation of Extralegal Principles into Legal Principles by the International Court of Justice in The Hague: Illustrated by a Peaceful Delimitation of «the Promised Land» 

    Ørebech, Peter Th (Journal article; Tidsskriftartikkel; Peer reviewed, 2020)
    Social norms are mixtures of extralegal and legal principles. The International Court of Justice‟ in The Hague‟s (ICJ) adjudication subtracts normative structures from different sources, moral, ethical, religious etc. dogmas amplifying its case law. The failing Israel-Palestine reconciliation that results from “power asymmetries” and “supreme emergency exception”, illustrates how absence of concomitant ...
  • The networked handling of rush orders in customer services 

    Engelseth, Per; White, Brian E. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020)
    Rush orders are characterised by time constraints and organisational priority. They are handled by the supplier with the aim of meeting customer requirements in as limited a timeframe as possible. Rather than focusing on rush orders as a deterministic planning problem, this paper takes an inter-organisational perspective that highlights the complex networked interactions between the supplier and the ...
  • Changes in air passenger demand as a result of the COVID-19 crisis: using Big Data to inform tourism policy 

    Gallego, Inmaculada; Font aulet, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-05)
    This paper develops a methodology for the early detection of reactivation of tourist markets to help mitigate the effects of the COVID-19 crisis, using Skyscanner data on air passenger searches (>5,000 million) and picks (>600 million), for flights between November 2018 and December 2020, through ForwardKeys. For future travel during the May to September 2020 period, the desire to travel (based on ...
  • Asymmetric price transmission in a changing food supply chain 

    Kidane, Dejene Gizaw; Myrland, Øystein; Xie, Jinghua (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-26)
    The farmed salmon supply chain in Europe is changing. There is a growing concentration at intermediary levels in the supply chain and more product differentiation in the market. This means that different price determination processes could apply in various product sub-markets. In this study, price transmission relationships in the salmon value chain were investigated at two different product levels. ...
  • Geographic hierarchical population genetic structuring in British European whitefish (Coregonus lavaretus) and its implications for conservation 

    Crotti, M; Adams, Colin Ean; Etheridge, Elizabeth C.; Bean, Colin W.; Gowans, Andrew R.D.; Knudsen, Rune; Lyle, Alex A.; Maitland, P. S.; Winfield, Ian J.; Elmer, K. R.; Præbel, Kim (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-04)
    The European whitefish <i>Coregonus lavaretus</i> complex represents one of the most diverse radiations within salmonids, with extreme morphological and genetic differentiation across its range. Such variation has led to the assignment of many populations to separate species. In Great Britain, the seven native populations of <i>C. lavaretus</i> (two in Scotland, four in England, one in Wales) were ...
  • High parasite diversity in the amphipod Gammarus lacustris in a subarctic lake 

    Shaw, Jenny Carolyn; Henriksen, Eirik Haugstvedt; Knudsen, Rune; Kuhn, Jesper Andreas; Kuris, Armand M.; Lafferty, Kevin D.; Siwertsson, Anna; Soldánová, Miroslava; Amundsen, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-05)
    Amphipods are often key species in aquatic food webs due to their functional roles in the ecosystem and as intermediate hosts for trophically transmitted parasites. Amphipods can also host many parasite species, yet few studies address the entire parasite community of a gammarid population, precluding a more dynamic understanding of the food web. We set out to identify and quantify the parasite ...
  • Does the Infectious Status of Aphids Influence Their Preference Towards Healthy, Virus-Infected and Endophytically Colonized Plants? 

    Fingu-Mabola, Junior Corneille; Martin, Clément; Bawin, Thomas; Verheggen, François Jean; Francis, Frédéric (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-11)
    Aphids (Hemiptera: Aphididae) cause significant damage and transmit viruses to various crop plants. We aimed to evaluate how the infectious status of aphids influences their interaction with potential hosts. Two aphid (Myzus persicae and Rhopalosiphum padi) and plant (Nicotiana tabacum and Triticum aestivum) species were used. The preferences of aphids towards healthy, virus-infected (Potato Leafroll ...
  • Best environmental predictors of breeding phenology differ with elevation in a common woodland bird species 

    Bison, Marjorie; Yoccoz, Nigel; Carlson, Bradley; Klein, Geoffrey; Laigle, Idaline; Van Reeth, Colin; Asse, Daphné; Delestrade, Anne (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-17)
    Temperatures in mountain areas are increasing at a higher rate than the Northern Hemisphere land average, but how fauna may respond, in particular in terms of phenology, remains poorly understood. The aim of this study was to assess how elevation could modify the relationships between climate variability (air temperature and snow melt‐out date), the timing of plant phenology and egg‐laying date of ...
  • Infection and microbial molecular motifs modulate transcription of the interferon-inducible gene ifit5 in a teleost fish 

    Bela-Ong, Dennis; Greiner-Tollersrud, Linn; van der Wal, Yorick Andreas; Jensen, Ingvill; Seternes, Ole Morten; Jørgensen, Jorunn (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-21)
    Interferon-induced proteins with tetratricopeptide repeats (IFITs) are involved in antiviral defense. Members of this protein family contain distinctive multiple structural motifs comprising tetratricopeptides that are tandemly arrayed or dispersed along the polypeptide. IFIT-encoding genes are upregulated by type I interferons (IFNs) and other stimuli. IFIT proteins inhibit virus replication by ...
  • Understanding and managing the interactions of impacts from nature-based recreation and climate change 

    Monz, Christopher; Gutzwiller, Kevin J.; Hausner, Vera Helene; Brunson, Mark W.; Buckley, Ralf; Pickering, Catherine (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-04)
    Disturbance to ecosystems in parks and protected areas from nature-based tourism and recreation is increasing in scale and severity, as are the impacts of climate change—but there is limited research examining the degree to which these anthropogenic disturbances interact. In this perspective paper, we draw on the available literature to expose complex recreation and climate interactions that may ...

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