Recent additions

  • Borealization impacts shelf ecosystems across the Arctic 

    Husson, Berengere; Bluhm, Bodil Annikki Ulla Barbro; Cyr, Frédéric; Danielson, Seth L.; Eriksen, Elena; Fossheim, Maria; Geoffroy, Maxime; Hopcroft, Russell R.; Ingvaldsen, Randi Brunvær; Jørgensen, Lis Lindal; Lovejoy, Connie; Meire, Lorenz; Mueter, Franz; Primicerio, Raul; Winding, Mie (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-24)
    Climate change is rapidly modifying biodiversity across the Arctic, driving a shift from Arctic to more boreal ecosystem characteristics. This phenomenon, known as borealization, is mainly described for certain functional groups along sub-Arctic inflow shelves (Barents and Chukchi Seas). In this review, we evaluate the spatial extent of such alterations across the Arctic, as well as their effects ...
  • Which ecological factors influence the level of intraspecific diversity within post-glacial fishes? A case study using Coregonus and Salvelinus 

    Blain, Stephanie A.; Adams, Colin E.; Amundsen, Per-Arne; Knudsen, Rune; Chavarie, Louise (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-05)
    1. While it is likely that ecological context is important, the factors that facilitate and maintain variable levels of intraspecific diversity in Salmonidae fishes across environments remain unclear.<p> <p>2. Using a meta-analysis of sympatric ecotype assemblages from two salmonid genera—Salvelinus and Coregonus—we evaluated the importance of ecological factors determining the number of sympatric ...
  • Essential omega-3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean 

    Schmidt, Katrin; Graeve, Martin; Hoppe, Clara J. M.; Torres-Valdes, Sinhué; Welteke, Nahid; Whitmore, Laura M.; Anhaus, Philipp; Atkinson, Angus; Belt, Simon T.; Brenneis, Tina; Campbell, Robert G.; Castellani, Giulia; Copeman, Louise A.; Flores, Hauke; Fong, Allison A.; Hildebrandt, Nicole; Kohlbach, Doreen; Nielsen, Jens M.; Parrish, Christopher C.; Rad-Menéndez, Cecilia; Rokitta, Sebastian D.; Tippenhauer, Sandra; Zhuang, Yanpei (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-19)
    Microalgae are the main source of the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), essential for the healthy development of most marine and terrestrial fauna including humans. Inverse correlations of algal EPA and DHA proportions (% of total fatty acids) with temperature have led to suggestions of a warming-induced decline in the global production of these biomolecules ...
  • Predicting trawl catches using environmental DNA 

    Guri, Gledis; Shelton, Andrew Olaf; Kelly, Ryan P; Yoccoz, Nigel Gilles; Johansen, Torild; Præbel, Kim; Hanebrekke, Tanja Lexau; Ray, Jessica Louise; Fall, Johanna Jennifer Elisabeth; Westgaard, Jon-Ivar (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-07)
    Quantifying the biomass, or number of individuals, diversity, and distribution of marine species is a critical aspect of understanding and managing marine ecosystems. In recent years, there has been growing interest in using environmental DNA (eDNA) for marine ecosystem management and biodiversity assessment. However, the main challenge hindering eDNA applicability has been the inability to infer ...
  • Screening for viruses using unicellular eukaryotes as hosts 

    Ricky, Zaroon (Master thesis; Mastergradsoppgave, 2023-11-15)
    This master’s project delves into the microbial diversity of the Arctic region, with focus on the isolation and characterization of a yeast of the Cystobasidium genus and likely viruses capable of infecting it. The research also shows preliminary results pointing at the movement and chemotaxis capabilities of the yeast, presenting findings that have the potential to shape our understanding of microbial ...
  • Ecosystem structure and function of the North Water Polynya 

    Bryndum-Buchholz, Andrea; Herbig, Jennifer L.; Darnis, Gérald; Geoffroy, Maxime; Eddy, Tyler D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-14)
    The North Water Polynya is one of the most productive Arctic regions on Earth, sustaining the world's northernmost Inuit communities for millennia. The polynya is a large and persistent region of open water surrounded by sea ice and exhibits high primary productivity, is a biodiversity hotspot, and is a key habitat and migration corridor for Arctic species. Many aspects of the ecosystem structure ...
  • Characterization of Monocarboxylate Transporters in the Brain of the Hooded Seal (Cystophora cristata) Reveal Possible Biochemical Adaptation to Diving 

    Jensen, Sigrid Vold (Master thesis; Mastergradsoppgave, 2024-08-29)
    Diving mammals are perpetually required to manage low-oxygen conditions throughout their lives. The mammalian brain is an organ particularly vulnerable to low oxygen levels due to its high energy demands, which require steady aerobic ATP production. The brain of the deep- diving hooded seal (Cystophora cristata) demonstrates remarkable tolerance to hypoxia. Studies suggest that this brain hypoxia ...
  • Benthic Megafauna Biodiversity Associated to Vulnerable Marine Ecosystems in Norwegian waters 

    Garcia Cambeiro, Juan Manuel (Master thesis; Mastergradsoppgave, 2024-08-15)
    The biodiversity of benthos is influenced by habitat forming taxa defining Vulnerable Marine Ecosystems (VME). Such indicator taxa are used to identify and designate VME areas, but their numerical relation to benthic biodiversity is not known. In this thesis I address the relationship between abundance of VME indicator-taxa and megabenthos biodiversity in Norwegian waters. The main objectives were ...
  • The emerging picture of a diverse deep Arctic Ocean seafloor: From habitats to ecosystems 

    Ramirez-Llodra, Eva; Meyer, Heidi Kristina; Bluhm, Bodil Annikki Ulla Barbro; Brix, Saskia; Brandt, Angelika; Dannheim, Jennifer; Downey, Rachel V.; Egilsdottir, Hrönn; Eilertsen, Mari Heggernes; Gaudron, Sylvie M.; Gebruk, Anna; Golikov, Alexey V.; Hasemann, Christiane; Hilário, Ana; Jørgensen, Lis Lindal; Kaiser, Stefanie; Korfhage, Severin A.; Kürzel, Karlotta; Lörz, Anne-Nina; Buhl-Mortensen, Pål; Olafsdottir, Steinunn H.; Piepenburg, Dieter; Purser, Autun; Ribeiro, Pedro A; Sen, Arunima; Soltwedel, Thomas; Stratmann, Tanja; Steger, Jan; Svavarsson, Jörundur; Tandberg, Anne Helene S.; Taylor, James; Theising, Franziska I; Uhlir, Carolin; Waller, Rhian G.; Xavier, Joana R.; Zhulay, Irina; Saaedi, Hanieh (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-04)
    Interest in the deep Arctic Ocean is rapidly increasing from governments, policy makers, industry, researchers, and conservation groups, accentuated by the growing accessibility of this remote region by surface vessel traffic. In this review, our goal is to provide an updated taxonomic inventory of benthic taxa known to occur in the deep Arctic Ocean and relate this inventory to habitat diversity. ...
  • Benthic remineralization under future Arctic conditions and evaluating the potential for changes in carbon sequestration in warming sediments 

    Sen, Arunima; Jordà Molina, Èric; Ricardo de Freitas, Thaise; Hess, Silvia; Reiss, Henning; Bluhm, Bodil Annikki Ulla Barbro; Renaud, Paul Eric (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-07)
    Benthic (seafloor) remineralization of organic material determines the fate of carbon in the ocean and its sequestration. Bottom water temperature and labile carbon supply to the seafloor are expected to increase in a warming Arctic and correspondingly, benthic remineralization rates. We provide some of the first experimental data on the response of sediment oxygen demand (SOD), an established proxy ...
  • Characterizing humpback whale behavior along the North-Norwegian coast 

    Ytterhus Utengen, Ingvild; Vogel, Emma Frances; Biuw, Martin; Van Ruiten, Meghan; Rikardsen, Audun Håvard (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-09)
    Background - Studying movement patterns of individual animals over time can give insight into how they interact with the environment and optimize foraging strategies. Humpback whales (Megaptera novaeangliae) undertake long seasonal migrations between feeding areas in polar regions and breeding grounds in tropical areas. During the last decade, several individuals have had up to a 3-month stop-over ...
  • Integrated approach-based groundwater mapping in sohag governorate, upper Egypt, using remote sensing and aeromagnetic data 

    El-Badrawy, Hussein T.; Abbas, Abbas M.; Massoud, Usama; Abu Alam, Tamer Sabry Zaki; Alrefaee, Hamed A.; Abo Khashaba, Saif M.; Nagy, Mostafa (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-12)
    Introduction: Groundwater demand has been considerably heightened due to rapid urban growth, specifically in arid areas that rely primarily on groundwater. This study aims to utilize remote sensing and aeromagnetic data, combined with the Analytic Hierarchy Process (AHP) based GIS, to evaluate potential groundwater zones in the Sohag area, Egypt.<p> <p>Methods: Nine thematic layers, including ...
  • Testing the radiation cascade in postglacial radiations of whitefish and their parasites: founder events and host ecology drive parasite evolution 

    Brabec, Jan; Gauthier, Jérémy; Selz, Oliver M.; Knudsen, Rune; Bilat, Julia; Alvarez, Nadir; Seehausen, Ole; Feulner, Philine G. D.; Præbel, Kim; Costa, Isabel Blasco (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-19)
    Reciprocal effects of adaptive radiations on the evolution of interspecific interactions, like parasitism, remain barely explored. We test whether the recent radiations of European whitefish (Coregonus spp.) across and within perialpine and subarctic lakes promote its parasite Proteocephalus fallax (Platyhelminthes: Cestoda) to undergo host repertoire expansion via opportunity and ecological fitting, ...
  • Integration of AI Training in the Field of Higher Education in the Republic of Bulgaria: An Overview 

    Simeonov, Svilen; Feradov, Firgan; Marinov, Angel; Abu Alam, Tamer Sabry Zaki (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-27)
    The presented work provides a comprehensive evaluation of the current availability of education programs and courses related to of AI the field of Information Technologies and Computer Science in higher education institutions (HIEs) in the Republic of Bulgaria. More specifically, this study examines 163 bachelor’s and 239 master’s degree programs from 28 HEIs available during the 2023/24 academic ...
  • Land cover succession for recently drained lakes in permafrost on the Yamal Peninsula, Western Siberia 

    Von Baeckmann, Clemens; Bartsch, Annett; Bergstedt, Helena; Efimova, Aleksandra; Widhalm, Barbara; Ehrich, Dorothee; Kumpula, Timo; Sokolov, Alexander; Abdulmanova, Svetlana (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-17)
    Drained lake basins (DLBs) are dominant features in lowland permafrost landscapes of the Arctic. Here, we present a novel approach describing and quantifying the succession progression of recently drained basins using a land cover unit retrieval scheme developed specifically for the Arctic tundra biome. The complementarity between land cover units and Normalized Difference Vegetation Index (NDVI) ...
  • Loop analysis quantifying important species in a marine food web 

    Jordán, Ferenc; Patonai, Katalin; Capelli, Greta; Primicerio, Raul; Bodini, Antonio (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-10)
    Improving the predictive power of food web analysis is a major challenge. Identifying the relationships that link topological and dynamical features may help. We used the predictions of loop analysis about the effect of perturbations targeted to the components of Barents sea food web to quantify their sensitivity and community impact, that we summarized in two new indices, NI and NS. Using a ...
  • Whole-ocean network design and implementation pathway for Arctic marine conservation 

    James, Timothy D.; Sommerkorn, Martin; Solovyev, Boris; Platonov, Nikita; Morrison, John; Chernova, Natalia; Gavrilo, Maria V.; Giangioppi, Martine; Onufrenya, Irina; Roff, John C.; Shpak, Olga V.; Skjoldal, Hein Rune; Spiridonov, Vasily; Ardron, Jeff A.; Belikov, Stanislav Egorovich; Bluhm, Bodil Annikki Ulla Barbro; Christensen, Tom; Christiansen, Jørgen Schou; Filatova, Olga A.; Frost, Mette; Gerhartz-Abraham, Adrian; Johansen, Kasper Lambert; Karamushko, Oleg V.; Keenan, Erin; Kochnev, Anatoly A.; Lancaster, Melanie L.; Melikhova, Evgeniya; Merritt, Will; Mosbech, Anders; Pisareva, Maria N.; Møller, Peter Daniel Rask; Solovyeva, Maria; Tertitski, Grigori; Trukhanova, Irina S. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-25)
    Forestalling the decline of global biodiversity requires urgent and transformative action at all levels of government and society, particularly in the Arctic Ocean and adjacent seas where rapid changes are already underway. Amid growing scientific support and mounting pressure, the majority of nations have committed to the most ambitious conservation targets yet. However, without an approach ...
  • Acoustic mapping reveals macroalgal settlement following a retreating glacier front in the High Arctic 

    Gonzalez Triginer, Victor; Beck, Milan; Sen, Arunima; Bischof, Kai; Damsgård, Børge (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-10)
    Vegetated coastal marine ecosystems are projected to expand northwards in the Arctic due to climate change, but the mechanisms for this expansion are complex and nuanced. Macroalgal biomass in the littoral areas of Svalbard has been increasing, but data at the glacier fronts are very scarce. In this study, we use hydroacoustics and video validation from an unmanned surface vehicle to survey macroalgal ...
  • Bilberry metabolomic and proteomic profiling during fruit ripening reveals key dynamics affecting fruit quality 

    Nguyen, Nga; Bergmann, Ulrich; Jaakola, Laura Elina; Häggman, Hely; Jokipii-Lukkari, Soile; Toth, Katalin (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-16)
    Bilberry (Vaccinium myrtillus L.) is a wild berry species that is prevalent in northern Europe. It is renowned and well-documented for its nutritional and bioactive properties, especially due to its anthocyanin content. However, an overview of biological systems governing changes in other crucial quality traits, such as size, firmness, and flavours, has received less attention. In the present study, ...
  • Formative feedback through digital MCQs: Students´ perceived learning in a bachelor-level physiology course 

    Sundset, Monica Alterskjær; Norli, Nora Qi Baskår; Bjørndal, Cato; Svensen, Camilla (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-29)
    Feedback is defined as a process in which students can benefit from information about their own performance to improve the quality of their work and learning strategies. This case study examines how students in a bachelor-level physiology course experienced their learning when receiving formative feedback through digital multiple-choice questions (MCQs) in the web-based learning platform Canvas. The ...

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