Viser treff 181-200 av 379

    • Climate fluctuations and differential survival of bridled and non-bridled Common Guillemots Uria aalge 

      Reiertsen, Tone Kristin; Erikstad, Kjell E; Barrett, Robert T; Sandvik, Hanno; Yoccoz, Nigel (Journal article; Tidsskriftartikkel; Peer reviewed, 2012-06-22)
      Climate fluctuations and its effects on ecological processes are evident in most areas worldwide but whether such climatic effects are induced phenotypic plasticity or whether animals adapt to the new environment through micro‐evolutionary processes is poorly known. In this study we have analyzed long‐term data (22 years) on the relationship between climatic fluctuations and the adult survival of ...
    • Is there anybody in there? Entomological evidence from a boat burial at Øksnes in Vesterålen, northern Norway 

      Panagiotakopulu, Eva; Buckland, Paul C.; Wickler, Stephen (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-07-27)
      Although there are several well preserved Viking boat burials from Norway, until recently palaeoecological research on their context has often been limited. Research on fossil insect remains in particular can provide valuable forensic information even in the absence of an actual body. Here we present archaeoentomological information from a boat burial at Øksnes in Vesterålen, northeast Norway, an ...
    • A genetic fingerprint of Amphipoda from Icelandic waters – the baseline for further biodiversity and biogeography studies 

      Jażdżewska, Anna M.; Corbari, Laure; Driskell, Amy; Frutos, Inmaculada; Havermans, Charlotte; Hendrycks, Ed; Hughes, Lauren E.; Lörz, Anne-Nina; Stransky, Bente; Tandberg, Anne Helene S.; Vader, Wim; Brix, Saskia (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-23)
      Amphipods constitute an abundant part of Icelandic deep-sea zoobenthos yet knowledge of the diversity of this fauna, particularly at the molecular level, is scarce. The present work aims to use molecular methods to investigate genetic variation of the Amphipoda sampled during two IceAGE collecting expeditions. The mitochondrial cytochrome oxidase subunit 1 (COI) of 167 individuals originally assigned ...
    • Plant DNA metabarcoding of lake sediments: How does it represent the contemporary vegetation 

      Alsos, Inger Greve; Lammers, Youri; Yoccoz, Nigel Gilles; Jørgensen, Tina; Sjögren, Per; Gielly, Ludovic; Edwards, Mary E. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-17)
      Metabarcoding of lake sediments have been shown to reveal current and past biodiversity, but little is known about the degree to which taxa growing in the vegetation are represented in environmental DNA (eDNA) records. We analysed composition of lake and catchment vegetation and vascular plant eDNA at 11 lakes in northern Norway. Out of 489 records of taxa growing within 2 m from the lake shore, ...
    • Shamanism in Contemporary Norway: Concepts in Conflict 

      Fonneland, Trude A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-07-23)
      To choose a terminology for an investigation of shamanism in contemporary Norway is not entirely without problems. Many shamans are adamant in rejecting the term religion in connection with their practices and choose broader rubrics when describing what they believe in. When shamanism was approved as an official religion by the Norwegian government in 2012, the tensions ran high, and many shamanic ...
    • The Drabo corymbosae-Papaveretea dahliani − a new vegetation class of the High Arctic polar deserts. 

      Daniëls, Fred J. A.; Elvebakk, Arve; Matveyeva, Nadezhda V.; Mucina, Ladislav (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-02-22)
      A new class and a new order (Drabo corymbosae-Papaveretea dahliani and Saxifrago oppositifoliae-Papaveretalia dahliani) have been described, and the Papaverion dahliani validated. This is vegetation of zonal habitats in lowlands of the High Arctic subzone A (or Arctic herb, cushion forb or polar desert subzone) and of ecologically equivalent sites at high altitudes on the mountain plateaus of the ...
    • Yoik experiences and possible positive health outcomes: An explorative pilot study 

      Hämäläinen, Soile; Musial, Frauke; Graff, Ola; Olsen, Torjer Andreas; Salamonsen, Anita (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-19)
      Background: Yoik is an old vocal music tradition of Sami, the indigenous people inhabiting Northern Fennoscandia and Kola peninsula in Russia. Studies of music therapy (MT) and especially singing have documented improvements in social and overall functioning in people With severe mental disorders and positive effect on depressive symptoms and sleep quality. Possible connections between yoik and ...
    • High-throughput sequencing of African chikanda cake highlights conservation challenges in orchids 

      Veldman, Sarina; Gravendeel, Barbara; Otieno, Joseph; Lammers, Youri; Duijm, Elza; Nieman, Aline; Bytebier, Benny; Ngugi, Grace; Martos, Florent; van Andel, TR; de Boer, Hugo (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-01)
      Chikanda is a traditional dish made with wild-harvested ground orchid tubers belonging to three orchidioid genera, Disa, Satyrium and Habenaria, all of which are CITES appendix II-listed. Identification of collected orchid tubers is very difficult and documentation of constituent species in prepared chikanda has hitherto been impossible. Here amplicon metabarcoding was used in samples of six prepared ...
    • Hvor godt er karplantefloraen i Norge kartlagt? 3. Nordland 

      Alm, Torbjørn; Pedersen, Oddvar (Journal article; Tidsskriftartikkel; Peer reviewed, 2017)
      Nordland is Norway’s second largest county, with an areal extent of 38,482 km 2 . In general, Nordland is reasonably well covered in terms of botanical exploration, with few blank areas. No flora covering the entire area has ever been compiled, but floristic surveys are available from several part areas, ranging in size from single localities to large districts. Still, the absence of a ...
    • Natural selection shaped the rise and fall of passenger pigeon genomic diversity 

      Murray, Gemma G.R.; Soares, André E.R.; Novak, Ben J.; Schaefer, Nathan K.; Cahill, James A.; Baker, Allan J.; Demboski, John R.; Doll, Andrew; Da Fonseca, Rute R.; Fulton, Tara L.; Gilbert, Marcus Thomas Pius; Heintzman, Peter D.; Letts, Brandon; McIntosh, George; O'Connell, Brendan L.; Peck, Mark; Pipes, Marie-Lorraine; Rice, Edward S.; Santos, Kathryn M.; Sohrweide, A. Gregory; Vohr, Samuel H.; Corbett-Detig, Russell B.; Green, Richard E.; Shapiro, Beth (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-17)
      The extinct passenger pigeon was once the most abundant bird in North America, and possibly the world. Although theory predicts that large populations will be more genetically diverse, passenger pigeon genetic diversity was surprisingly low. To investigate this disconnect, we analyzed 41 mitochondrial and 4 nuclear genomes from passenger pigeons and 2 genomes from band-tailed pigeons, which are ...
    • Slutten på en epoke. Pomorenes fangststasjon på Kapp Lee, Svalbard. 

      Jørgensen, Roger (Journal article; Tidsskriftartikkel; Peer reviewed, 2017)
      Svalbard er en øygruppe beliggende omtrent midt mellom Norges fastland og Nordpolen, og denne fjerne beliggenheten er nok forklaringen på at de rike ressursene i hav og på land så sent ble utnyttet. Willem Barentsz oppdaget Svalbard 17. juni 1596, og vi har ingen eldre sikre spor etter mennesker på øygruppen (Bjerck 1999). Langs kysten, særlig på den største øya, Spitsbergen, ser man i det nakne, ...
    • The genetic basis and enigmatic origin of melanic polymorphism in the pomarine skua (Stercorarius pomarinus) 

      Janssen, Kirstin; Mundy, Nicholas I. (Journal article; Tidsskriftartikkel, 2017-12-06)
      A key outstanding issue in adaptive evolution is the relationship between the genetics of intraspecific polymorphism and interspecific evolution. Here, we show that the pale/dark ventral plumage polymorphism that occurs in both the pomarine skua (Stercorarius pomarinus) and Arctic skua (S. parasiticus) is the result of convergent evolution at the same locus (MC1R), involving some of the same amino ...
    • Introduction. From depictions of race to revitalizing a people: aspects of research on the Sámi in Finland and Norway 

      Nyyssönen, Jukka; Lehtola, Veli-Pekka (Journal article; Tidsskriftartikkel; Peer reviewed, 2017)
      In this special section of journal “Arctic and North” renowned and younger scholars from Finland and Norway take on the topic of research on the Sámi, from the era of “Lappology” to the era of “Sámi research”. The focus in the articles varies between research history, historiography and history of science. Thematically, the articles range from longer overviews of the historical ...
    • Circumpolar dynamics of a marine top-predator track ocean warming rates. 

      Descamps, Sebastian; Anker-Nilssen, Tycho; Barrett, Robert T.; Irons, D.; Merkel, Flemming; Robertson, Gregory J.; Yoccoz, Nigel Gilles; Mallory, Mark L.; Montevecchi, William A.; Boertmann, D.; Artukhin, Yuri; Christensen-Dalsgaard, Signe; Erikstad, Kjell E.; Gilchrist, H. Grant; Labansen, Aili; Lorentsen, Svein Håkon; Mosbech, Anders; Olsen, Bergur; Petersen, Aevar; Rail, Jean-Francois; Renner, Heather M.; Strøm, H.; Systad, Geir Helge; Wilhelm, Sabina I.; Zelenskaya, Larisa (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-07)
      Global warming is a nonlinear process, and temperature may increase in a stepwise manner. Periods of abrupt warming can trigger persistent changes in the state of ecosystems, also called regime shifts. The responses of organisms to abrupt warming and associated regime shifts can be unlike responses to periods of slow or moderate change. Understanding of nonlinearity in the biological responses to ...
    • The dependence of long-distance migration to North Norway on environmental conditions in the wintering area and en route 

      Barrett, Robert T. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017)
      The onset of bird migration may be under partial endogenous control whereas the timing of movement is flexible with weather and conditions faced by the moving birds being the ultimate cause of variability of arrival dates. This study shows that the early arrival dates of two of three long-distance passerine spring migrants (Willow Warblers Phylloscopus trochilus and Chiffchaffs P. collybita) in North ...
    • Alpine garden plants from six continents show high vulnerability to ice encasement 

      Bjerke, Jarle W.; Elvebakk, Arve; Tømmervik, Hans (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-10-27)
      Icy surfaces impose challenges for northern societies, wildlife and agriculture. However, there have been relatively few studies of the impacts of anoxic ground ice on non-agricultural plants. During the winter of 2009–2010, an extreme winter warming event led to thick ground-ice layer development in the world’s northernmost botanical garden in Tromsø, in subarctic Norway, due to much rain on ...
    • Väinö Tanner and the discourse on racial difference 

      Nyyssönen, Jukka (Journal article; Tidsskriftartikkel; Peer reviewed, 2017)
      The article charts a previously lesser-known aspect of research on the Skolt Sami by Väinö Tanner — his ideas on the Skolt Sami as a race. Tanner’s place in the scholarly field of racial theorizing and the discursive resources on which he relied are examined. One inspiring contemporaneous discourse was the Finnish hygienic discourse and the improvement of the nation’s health, towards which Tanner ...
    • 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 ...
    • Soapstone in Northern Norway: archaeological and geological evidence, quarry and artifact survey results. 

      Wickler, Stephen; Lindahl, Ingvar; Nilsson, Lars Petter (Peer reviewed; Chapter; Bokkapittel, 2017)
      Archaeological research on the extraction, distribution and utilization of soapstone artifacts in northern Norway has been limited, but systematic geological documentation of soapstone exposures that includes quarry activity provides an opportunity to expand archaeological insights into soapstone provenance and extraction. This article brings together ...
    • Ocean climate and egg investment in the black-legged kittiwake Rissa tridactyla. 

      Barrett, Robert T.; Erikstad, Kjell E.; Reiertsen, Tone (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-09-14)
      Birds allocate substantial resources to their eggs during the laying period, resources also needed for other concurrent costly processes such as mate acquisition, nest building and site defence. Egg and clutch sizes may thus vary in response to food availability prior to egg laying. We investigated the variation in egg and clutch size of black-legged kittiwakes Rissa tridactyla in a North Norwegian ...