Viser treff 164-183 av 370

    • Lake sedimentary DNA accurately records 20th Century introductions of exotic conifers in Scotland 

      Sjøgren, Per Johan; Edwards, Mary Elizabeth; Gielly, Ludovic; Langdon, Cathrine; Croudace, I.W.; Merkel, Marie Kristine Føreid; Thierry, Fonville; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-28)
      Sedimentary DNA (sedDNA) has recently emerged as a new proxy for reconstructing past vegetation, but its taphonomy, source area and representation biases need better assessment. We investigated how sedDNA in recent sediments of two small Scottish lakes reflects a major vegetation change, using well-documented 20th Century plantations of exotic conifers as an experimental system. We used next-generation ...
    • Landsmøtet 1917 og samebevegelsen i nord 

      Bjørklund, Ivar (Journal article; Tidsskriftartikkel; Peer reviewed, 2017)
      THE SÁMI NATIONAL ASSEMBLY IN 1917 AND THE SÁMI MOVEMENT IN THE NORTH <br> The Sámi national assembly held in Trondhjem in 1917 is considered to be the very first organized political opposition from the Norwegian Sámi. However, among the 150 persons attending, only three Sámi were from Northern Norway – an area where 90% of the Sámi population lived. The participants were Sámi from the southern parts ...
    • Larix species range dynamics in Siberia since the Last Glacial captured from sedimentary ancient DNA 

      Schulte, Luise; Meucci, Stefano; Stoof-Leichsenring, Kathleen R.; Heitkam, Tony; Schmidt, Nicola; von Hippel, Barbara; Andreev, Andrei A.; Diekmann, Bernhard; Biskaborn, Boris K.; Wagner, Bernd; Melles, Martin; Pestryakova, Lyudmila A.; Alsos, Inger Greve; Clarke, Charlotte; Krutovsky, Konstantin V.; Herzschuh, Ulrike (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-09)
      Climate change is expected to cause major shifts in boreal forests which are in vast areas of Siberia dominated by two species of the deciduous needle tree larch (Larix). The species differ markedly in their ecosystem functions, thus shifts in their respective ranges are of global relevance. However, drivers of species distribution are not well understood, in part because paleoecological data ...
    • Lateglacial and Early Holocene palaeoenvironmental change and human activity at Killerby Quarry, North Yorkshire, UK 

      Hudson, Samuel M; Waddington, Clive; Pears, Ben; Ellis, Natalie; Parker, Luke; Hamilton, Derek; Alsos, Inger Greve; Hughes, Paul; Brown, Antony (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-05)
      The hunter-gatherers that entered the British peninsula after ice-retreat were exploiting a dynamic, rapidly changing environment. Records of vegetation change and human occupation during the Lateglacial to Early Holocene in northern Britain are more commonly found at upland and cave sites. However, recent research highlights many areas of the Swale–Ure Washlands that preserve extensive environmental ...
    • Later at higher latitudes: large-scale variability in seabird breeding timing and synchronicity 

      Burr, Zofia M.; Varpe, Øystein; Anker-Nilssen, Tycho; Erikstad, Kjell E; Descamps, Sébastien; Barrett, Robert T.; Bech, Claus; Christensen-Dalsgaard, Signe; Lorentsen, Svein-Håkon; Moe, Børge; Reiertsen, Tone Kristin; Strøm, Hallvard (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-28)
      In seasonal environments, organisms are expected to optimally schedule reproduction within an annual range of environmental conditions. Latitudinal gradients generate a range of seasonality to which we can expect adaptations to have evolved, and can be used to explore drivers of timing strategies across species’ distribution ranges. This study compares the timing of egg hatching in four seabird ...
    • Levedyktighetsanalyser for norske lomvibestander 

      Erikstad, K.E.; Reiertsen, T.K.; Anker-Nilssen, Tycho; Barrett, Robert T.; Lorentsen, Svein-Håkon; Strøm, H.; Systad, G.H. (Research report; Forskningsrapport, 2007-03)
      Hekkebestandene av lomvi (Uria aalge) langs norskekysten har hatt en sterk nedgang i løpet av de siste 45 årene. Den norske fastlandsbestanden utgjør i dag ikke mer enn ca 15 000 par, mens den til sammenligning ble beregnet til 120-160 000 par i begynnelsen av 1960-årene. Den største bestanden i norske områder finnes i dag på Bjørnøya hvor det hekker ca 100 000 par, men også her er bestanden ...
    • Liberating Mimesis: Between Art and Anthropology 

      Ragazzi, Rossella (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
    • The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration? 

      Elvebakk, Arve; Bjerke, Jarle W.; Nilsen, Lennart (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-29)
      <i>Allocetraria madreporiformis</i> is a small, finger-like, fruticose lichen with isolated occurrences in the inner fiord section of the long, straight fiord Wijdefjorden in Svalbard. Several new localities are added and mapped here, and we show that the species is confined to exclusive high-arctic steppe habitats on finetextured, moderately alkaline soil, exposed to wind erosion and aeolian transport ...
    • Life before Stonehenge: The hunter-gatherer occupation and environment of Blick Mead revealed by sedaDNA, pollen and spores 

      Hudson, Samuel M.; Pears, Ben; Jacques, David; Fonville, Thierry; Hughes, Paul; Alsos, Inger Greve; Snape, Lisa; Lang, Andreas; Brown, Antony (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-27)
      The Neolithic and Bronze Age construction and habitation of the Stonehenge Landscape has been extensively explored in previous research. However, little is known about the scale of pre-Neolithic activity and the extent to which the later monumental complex occupied an ‘empty’ landscape. There has been a long-running debate as to whether the monumental archaeology of Stonehenge was created in an ...
    • Life history of Leptagonus decagonus (Atlantic poacher) in Svalbard waters 

      Heggland, Kristin; Ottesen, Camilla; Berge, Jørgen (Conference object; Konferansebidrag, 2012-04)
      <p>The demersal fish species <i>Leptagonus decagonus</i> (Atlantic poacher) is a commonly encountered species on the continental shelf in the Barents Sea and around Svalbard, but little is known about the life-history and population traits of the species in Svalbard waters. It is therefore important to investigate this species to understand its importance in the ecosystem. <p>A total of 80 specimens ...
    • Life through an Ediacaran glaciation: Shale- and diamictite-hosted organic-walled microfossil assemblages from the late Neoproterozoic of the Tanafjorden area, northern Norway 

      Agic, Heda; Jensen, Sören; Meinhold, Guido; Högström, Anette Elisabeth Sofi; Ebbestad, Jan Ove R.; Høyberget, Magne; Palacios, Teodoro; Taylor, Wendy L. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-05)
      New organic-walled microfossil (OWM) assemblages are reported from upper Neoproterozoic glacial and interglacial siliciclastic deposits in Finnmark, northern Norway. A nearly continuous sedimentary succession of the Vestertana Group contains two glaciogenic units, the Smalfjorden and Mortensnes formations, interpreted as end-Cryogenian Marinoan and Ediacaran glaciations, respectively. We investigated ...
    • Limited Phylogeographic Signal in Sex-Linked and Autosomal Loci Despite Geographically, Ecologically, and Phenotypically Concordant Structure of mtDNA Variation in the Holarctic Avian Genus Eremophila 

      Drovetski, Sergei V.; Rakovic, Marko; Semenov, Georgy; Fadeev, Igor V.; Red'kin, Yaroslav A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      Phylogeographic studies of Holarctic birds are challenging because they involve vast geographic scale, complex glacial history, extensive phenotypic variation, and heterogeneous taxonomic treatment across countries, all of which require large sample sizes. Knowledge about the quality of phylogeographic information provided by different loci is crucial for study design. We use sequences of one mtDNA ...
    • Living on the edge: conservation genetics of seven thermophilous plant species in a high Arctic archipelago 

      Birkeland, Siri; Skjetne, Idunn Elisabeth Borgen; Brysting, Anne Krag; Elven, Reidar; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-19)
      Small, isolated and/or peripheral populations are expected to harbour low levels of genetic variation and may therefore have reduced adaptability to environmental change, including climate warming. In the Arctic, global warming has already caused vegetation change across the region and is acting as a significant stressor on Arctic biodiversity. Many of the rare plants in the Arctic are relicts from ...
    • Long-distance plant dispersal to North Atlantic islands: colonization routes and founder effect 

      Alsos, Inger Greve; Ehrich, Dorothee; Eidesen, Pernille Bronken; Solstad, Heidi Merethe; Westergaard, Kristine Bakke; Schonswetter, Peter; Tribsch, Andreas; Birkeland, Siri; Elven, Reidar; Brochmann, Christian (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-04-15)
      Long-distance dispersal (LDD) processes influence the founder effect on islands.We use genetic data for 25 Atlantic species and similarities among regional floras to analyse colonization, and test whether the genetic founder effect on five islands is associated with dispersal distance, island size and species traits. Most species colonized postglacially via multiple dispersal events from several ...
    • Long-term decline in egg size of Atlantic puffins Fratercula arctica is related to changes in forage fish stocks and climate conditions 

      Barrett, Robert T.; Nilsen, Erlend Birkeland; Anker-Nilssen, Tycho (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Due to major shifts in the marine ecosystem, many seabirds in the NE Atlantic have experienced short- and long-term breeding failures and population changes. One such seabird is the Atlantic puffin Fratercula arctica, the populations of which have declined in Norway at an annual rate of 2% over a ~30 yr period. Parallel to this decline, we found a significant decline in egg volume at 2 widely ...
    • Lophium elegans (Ascomycota), a rare European species 

      Mathiassen, Geir Harald; Granmo, Alfred; Rämä, Teppo (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-01-08)
    • "Lærerforum". Læreres bruk av og vurdering av et nettbasert veiledningstilbud. 

      Lund, Øystein (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Mange tiltak foreslås for å ruste norske lærere til å møte stadig større pedagogiske utfordringer. Nettbasert veiledning er ett slikt tiltak, og forventningene til de teknologibaserte løsningene har vært store. Imidlertid mangler forskning på hvordan lærere anvender, og vurderer tilbud om nettbasert faglig støtte. Artikkelen belyser funn fra en studie av læreres bruk av det nettbaserte veiledningstilbudet ...
    • Macro-nutritional balancing in a circumpolar boreal ruminant under winter conditions 

      Spitzer, Robert; Coissac, Eric; Cromsigt, Joris P. G. M.; Felton, Annika M.; Fohringer, Christian; Landman, Marietjie; Neumann, Wiebke; Raubenheimer, David; Singh, Navinder; Taberlet, Pierre Robert Michel; Widemo, Fredrik (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-08)
      <ol> <li>Differences in botanical diet compositions among a large number of moose faecal samples collected during winter correlated with the nutritional differences identified in the same samples (Mantel-r = 0.89, p = 0.001), but the nutritional differences were significantly smaller (p < 0.001).</li> <li>Nutritional geometry revealed that moose mixed Scots pine Pinus sylvestris and Vaccinium spp. ...
    • Margrete Kreutz' historie: utstilling som synliggjøring av individualitet, etnisitet og handlekraft 

      Baglo, Cathrine (Chapter; Bokkapittel, 2018)
      «Margrete Kreutz’ historie» (Margrete Kreutzen jieleden bïjre) er ei vandreutstilling som jeg produserte i samarbeid med billedkunstner Elin Andreassen og Tromsø Museum – Universitetsmuseet sommeren 2012. Utgangspunktet for utstillinga var den da nylig avleverte doktorgradsavhandlinga mi om levende utstillinger av samer på verdensutstillinger, i dyrehager, fornøyelsesparker og andre steder i Europa ...
    • Markus Fjellström Food Cultures in Sápmi: An interdisciplinary approach to the study of the heterogeneous cultural landscape of northern Fennoscandia AD 600–1900 

      Skandfer, Marianne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-09)
      Markus Fjellström has presented a substantial doctoral work in scientific archaeology, comprising six articles and an 80-page synthesis. The papers were published between 2015 and 2021. For the first time on such a large and systematic scale, these papers and thesis bring together specialists in Sámi and scientific/laborative archaeology to address the early history of the Sámi. The papers are ...