Viser treff 1-20 av 572

    • Digestive contents and food webs record the advent of dinosaur supremacy 

      Qvarnström, Martin; Vikberg Wernström, Per Joel Olof; Wawrzyniak, Zuzanna; Barbacka, Maria; Pacyna, Grzegorz; Górecki, Artur; Ziaja, Jadwiga; Jarzynka, Agata; Owocki, Krzysztof; Sulej, Tomasz; Marynowski, Leszek; Pieńkowski, Grzegorz; Ahlberg, Per E.; Niedźwiedzki, Grzegorz (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-27)
      The early radiation of dinosaurs remains a complex and poorly understood evolutionary event<sup>1–4</sup> . Here we use hundreds of fossils with direct evidence of feeding to compare trophic dynamics across five vertebrate assemblages that record this event in the Triassic–Jurassic succession of the Polish Basin (central Europe). Bromalites, fossil digestive products, increase in size and diversity ...
    • Insights into early animal evolution from the genome of the xenacoelomorph worm Xenoturbella bocki 

      Schiffer, Philipp H.; Natsidis, Paschalis; Leite, Daniel J.; Robertson, Helen E.; Lapraz, François; Marlétaz, Ferdinand; Fromm, Bastian; Baudry, Liam; Simpson, Fraser; Høye, Eirik; Zakrzewski, Anne-Christin; Kapli, Paschalia; Hoff, Katharina J.; Müller, Steven; Marbouty, Martial; Marlow, Heather; Copley, Richard R.; Koszul, Romain; Sarkies, Peter; Telford, Maximilian J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-29)
      The evolutionary origins of Bilateria remain enigmatic. One of the more enduring proposals highlights similarities between a cnidarian-like planula larva and simple acoel-like flatworms. This idea is based in part on the view of the Xenacoelomorpha as an outgroup to all other bilaterians which are themselves designated the Nephrozoa (protostomes and deuterostomes). Genome data can provide important ...
    • Individuelle forutsetninger i hørelære 

      Eide, Renate Ørnes (Mastergradsoppgave; Master thesis, 2024-10-31)
      Denne studien har hatt som mål å undersøke følgende problemstilling: Hvordan påvirker elevers individuelle forutsetninger deres prestasjon i hørelærerelaterte fag på musikklinjen i videregående skole? Individuelle forutsetninger har i denne studien omhandlet komponentene kunnskap, læringsstrategier og interesse. Komponentene springer ut fra Patricia Alexander sin modell for utvikling av ekspertise, ...
    • Økobevissthet og fellesskapsfølelse: fremveksten av en kvensk kunstbevegelse 

      Stien, Hanne Hammer (Chapter; Bokkapittel, 2024-11-04)
      De siste årene har en kvensk kunstbevegelse vokst frem. I kapittelet analyseres både verkene som ble presentert på Den første kvenske biennalen: Kväänibiennaali 2021, og begrunnelsen for etableringen av Kväänitaiteilijat / Kvensk kunstnerforbund. Argumentet er at en økobevisst holdning kommer til uttrykk i kunsten og i den omsorgspolitikken og fellesskapsfølelsen som ligger grunn for forbundet. ...
    • Drivers of Interspecific Spatial Segregation in Two Closely-Related Seabird Species at a Pan-Atlantic Scale 

      Bonnet-Lebrun, Anne-Sophie; Matthiopoulos, Jason; Lemaire-Patin, Rémi; Deville, Tanguy; Barrett, Robert; Bogdanova, Maria I.; Bolton, Mark; Christensen-Dalsgaard, Signe; Daunt, Francis; Dehnhard, Nina; Descamps, Sebastien; Elliot, Kyle; Erikstad, Kjell E.; Frederiksen, Morten; Gilchrist, Grant; Harris, Mike; Kolbeinsson, Yann; Linnebjerg, Jannie Fries; Lorentsen, Svein-Håkon; Mallory, Mark; Merkel, Flemming; Mosbech, Anders; Owen, Ellie; Patterson, Allison; Pratte, Isabeau; Strøm, Hallvard; Þórarinsson, Þorkell Lindberg; Wanless, Sarah; Ratcliffe, Norman (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-11)
      Aim - Ecologically similar species living in sympatry are expected to segregate to reduce the effects of competition where resources are limiting. Segregation from heterospecifics commonly occurs in space, but it is often unknown whether such segregation has underlying environmental causes. Indeed, species could segregate because of different fundamental environmental requirements (i.e., ‘niche ...
    • Holocene summer temperature reconstruction from plant sedaDNA and chironomids from the northern boreal forest 

      Mayfield, Roseanna J.; Rijal, Dilli Prasad; Heintzman, Peter D.; Langdon, Peter G.; Karger, Dirk N.; Brown, Antony Gavin; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-30)
      Climate-induced ecotonal shifts are expected to occur in the (sub)arctic and boreal zones in the coming decades. Understanding how these ecosystems have previously responded to climate change can provide greater insight into how ecosystems may develop under existing and future pressures. Here we present a Holocene record from Lake Horntjernet, a lake on the northern edge of the boreal forest in ...
    • Dealing with Nordic Colonialism: Agency and Othering in Two Art Projects Invoking Living Ethnographic Displays 

      Stien, Hanne Hammer; Baglo, Cathrine (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-08)
      In this article we explore two art projects that each, in their own way, thematise Nordic European colonialism and exhibition culture, and the relationship between the two. European Attraction Limited, by the Swedish-Norwegian artist Lars Cuzner and the Sudanese-Norwegian artist Mohamed Ali Fadlabi, was presented in the context of the Bicentenary of the Norwegian Constitution in Oslo in 2014. The ...
    • Dynamic home range of the grey-sided vole Craseomys rufocanus: a pilot study 

      Frafjord, Karl (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-07-15)
      Background Knowledge about home range size is vital to understand social systems and population dynamics of small mammals, as well as dispersal and a species’ landscape use. Home ranges have been mapped for some species of voles (subfamily Microtinae) but remain virtually unknown for many species, including the grey-sided vole Craseomys rufocanus. <p>Results A small pilot study was carried out ...
    • This Drum Is Not the Devil's Instrument: The Development and Performance of Drum Tunes in Norwegian Folk Music 

      Mistereggen, Birger; Waadeland, Carl Haakon (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-18)
      Trommeslåtter (drum tunes) have played a vital role in Norwegian traditional music for several hundred years. This article examines the development and performance of drum tunes in Norway, with a special focus on the work of Johannes Sundvor in transcribing drum music. We present several examples and analyse tunes from Sundvor’s collection. We also demonstrate how this Norwegian drum tradition ...
    • Diversity, toxicity, and distribution of potentially toxic diatoms in Antarctic waters––With description of Pseudo-nitzschia meridionalis sp. nov. and P. glacialis sp. nov. 

      Lundholm, Nina; Christensen, Anneliese L.; Olesen, Anna K.J.; Beszteri, Bánk; Eggers, Sarah Lena; Krock, Bernd; Altenburger, Andreas (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-12)
      Diatoms of the genus Pseudo-nitzschia, known for their potential toxicity, are integral to the phytoplankton community of the Southern Ocean, which surrounds Antarctica. Despite their ecological importance, the diversity and toxicity of Pseudo-nitzschia in this region remain underexplored. Globally, these diatoms are notorious for forming harmful algal blooms in temperate and tropical waters, causing ...
    • Papaver recircumscribed: A review of neighbouring Papaveraceae genera, including Afropapaver nom. et stat. nov. and Oreomecon, a large, Arctic-Alpine genus 

      Elvebakk, Arve; Bjerke, Jarle W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-29)
      Papaveraceae tribus Papavereae includes an American and a mainly Eurasian group of genera. The latter is proposed here to include eight genera. Amongst these, the recently described genus Oreomecon is phylogenetically a sister group to Meconopsis, a genus from Himalaya and central China, which is reviewed here as including 95 species and 21 subspecies. By contrast, Oreomecon has a circumpolar northern ...
    • A new species of Dasyhelea Kieffer, 1911 (Diptera: Ceratopogonidae) visiting flowers of Aristolochia in France 

      Szadziewski, Ryszard; Blatrix, Rumsais; Dominiak, Patrycja (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-26)
      Both sexes of Dasyhelea porczynskii Szadziewski, Blatrix et Dominiak, n. sp. collected from flowers of Aristolochia clematitis L. in southern France are described and illustrated. The new species is closely related to D. leptoclada Remm, 1967 female of which is briefly diagnosed for the first time.
    • Boats from bogs in Arctic Norway: depositional contexts and explanatory frameworks in the Late Iron Age and Mediaeval period 

      Wickler, Stephen Kent (Chapter; Bokkapittel, 2024)
      A comprehensive assessment of boat-related bog finds from the collection of the Arctic University Museum of Norway (Norges Arktiske Universitetsmuseum, NAU) materialises the entanglement of boat technology and cultural meaning in northern Norway during the Iron Age. Nineteen boat parts and related equipment made of Scots pine (Pinus sylvestris) from 17 bog locations have been documented. As the Early ...
    • A renaissance of microRNAs as taxonomic and phylogenetic markers in animals 

      Fromm, Bastian (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-21)
      Molecular markers for tracing animal sample origins and compositions are critical for applications such as parasite detection, contamination screening, and sample authentication. Among these, microRNAs have emerged as promising candidates due to their deep conservation, near-hierarchical evolution, and sta bility. I here review the suitability of microRNAs as taxonomic and also phylo genetic ...
    • Microbial community composition unaffected by mycorrhizal plant removal in sub-arctic tundra 

      Kirchhoff, Leah; Gavazov, Konstantin; Blume-Werry, Gesche; Krab, Eveline J.; Lett, Signe; Pedersen, Emily P.; Peter, Martina; Pfister, Stefanie; Väisänen, Maria; Monteux, Sylvain (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-03-11)
      Vegetation changes in a warming Arctic may affect plant-associated soil microbial communities with possible consequences for the biogeochemical cycling of carbon (C) and nitrogen (N). In a sub-arctic tundra heath, we factorially removed plant species with ecto- and ericoid mycorrhizal associations. After two years, we explored how mycorrhizal type-specific plant removal influences microbial ...
    • Extra-pair paternity and sperm length variation in a far northern Great Tit (Parus major) population 

      Kleven, Oddmund; Østnes, Jan Eivind; Rudolfsen, Geir; Schindler, Sonja; Schmoll, Tim (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-07-25)
      Extra-pair paternity is common among socially monogamous bird species and considered an important driver of post-copulatory sexual selection on ejaculate traits including sperm traits. Patterns of extra-pair paternity and sperm size both show substantial variation among populations, yet we know little about the expression of these key reproductive traits at high latitudes. Here we report patterns ...
    • Bakestones in Northern Norway: An Archaeological Witness to Medieval Foodways and Maritime Trade 

      Wickler, Stephen Kent (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-07-01)
      BAKESTONES ARE A 11TH-CENTURY EARLY MEDIEVAL INNOVATION associated with flatbread production that reflect a distinctive Norwegian food culture spanning some 600 years. Large scale manufacture of chlorite schist bakestones at Ølve-Hatlestrand, western Norway, was linked to further distribution in Norway from the port of Bergen. Bakestones were an important item of maritime trade transported to northern ...
    • Greening of Svalbard 

      Karlsen, Stein Rune; Elvebakk, Arve; Stendardi, Laura; Høgda, Kjell Arild; Macias-Fauria, Marc (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-21)
      Svalbard, located between 76°30′N and 80°50′N, is among the regions in the world with the most rapid temperature increase. We processed a cloud-free time-series of MODIS-NDVI for Svalbard. The dataset is interpolated to daily data during the 2000–2022 period with 232 m pixel resolution. The onset of growth, with a clear phenological definition, has been mapped each year. Then the integrated NDVI ...
    • Timing and extent of primary moult in breeding Black-legged Kittiwakes Rissa tridactyla at different colonies in the north-east Atlantic 

      Furness, Robert W.; Barrett, Robert (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-24)
      Timing of moult of the inner primaries by breeding Black-legged Kittiwakes is very similar among colonies ranging from southern England to northern Norway, but can be much later at very high-latitude colonies, such as at Svalbard, where breeding is delayed by the late spring thaw. Breeding adult Black-legged Kittiwakes almost all replaced the first and second (innermost) primary feathers on their ...
    • Musikktalenter i flow 

      Ingvaldsen, Torbjørn Lunde (Mastergradsoppgave; Master thesis, 2024-01-03)
      Formålet med denne studien innenfor fagområdet instrumentaldidaktikk har vært å undersøke hvorvidt elever som er tatt opp på et talentprogram for musikalske talenter opplever fenomenet flow i sin hverdag. Videre har studien sett på hvilke mulige positive effekter opplevelse av fenomenet kan ha overfor elevenes motivasjon og utvikling av kunnskap. Studiens teoretiske rammeverk består av Csíkszentmihályis ...