Now showing items 1158-1177 of 1891

    • Nasjonalparkforvaltning i Nord-Norge. Interpretativ guiding som strategi i miljøforvaltningen 

      Fagerli, Vegard (Master thesis; Mastergradsoppgave, 2007-05-29)
      Interpretativ guiding er et nytt begrep i norsk sammenheng. En interpretativ guide kommuniserer lokal kultur, miljøholdninger og ferdselsnormer til brukere av nasjonalparken, med det mål å skape mening og relasjon til stedet. Bakgrunnen for denne studien er vedtak fra Stortinget (Stortingsproposisjon nr. 65, 2002-2003) om satsning på økt turistmessig bruk av våre verneområder. Reisa nasjonalpark ...
    • Native Chilean Fruits and the Effects of Their Functional Compounds on Human Health 

      Ulloa-Inostroza, Elizabeth; Ulloa-Inostroza, Eric; Alberdi, Miren; Peña-Sanhueza, Daniela; González-Villagra, Jorge; Jaakola, Laura; Reyes-Diaz, Marjorie (Chapter; Bokkapittel, 2017-03-01)
      In recent years, there has been great interest in the nutraceutical compounds of fruits from native Chilean plant species. In this context, fruits of Amomyrtus meli (Meli), Aristotelia chilensis (Maqui), Berberis microphylla (Calafate), Luma apiculata (Arrayán), Luma chequén (Chequén), and Ugni molinae (Murtilla) growing predominantly in Chilean forests have been studied. This chapter has compiled ...
    • Native range estimates for red-listed vascular plants 

      Borgelt, Jan; Parada, Jorge Sicacha; Skarpaas, Olav; Verones, Francesca (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-29)
      Besides being central for understanding both global biodiversity patterns and associated anthropogenic impacts, species range maps are currently only available for a small subset of global biodiversity. Here, we provide a set of assembled spatial data for terrestrial vascular plants listed at the global IUCN red list. The dataset consists of pre-defned native regions for 47,675 species, density ...
    • Natural variation in snow depth and snow melt timing in the High Arctic have implications for soil and plant nutrient status and vegetation composition 

      Moriana Armendariz, Mikel; Nilsen, Lennart; Cooper, Elisabeth J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-16)
      Snow cover is a key component in Arctic ecosystems and will likely be affected by changes in winter precipitation. Increased snow depth and consequent later snowmelt leads to greater microbial mineralization in winter, improving soil and vegetation nutrient status. We studied areas with naturally differing snow depths and date of snowmelt in Adventdalen, Svalbard. Soil properties, plant leaf ...
    • The Nature Index : a general framework for synthesizing knowledge on the State of Biodiversity 

      Certain, Gregoire; Skarpaas, Olav; Bjerke, Jarle Werner; Framstad, Erik; Lindholm, Markus; Nilsen, Jan-Erik; Norderhaug, Ann; Oug, Eivind; Pedersen, Hans-Christian; Schartau, Ann Kristin; van der Meeren, Gro Ingleid; Aslaksen, Iulie; Engen, Steinar; Garnåsjordet, Per-Arild; Kvaløy, Pål; Lillegård, Magnar; Yoccoz, Nigel; Nybø, Signe (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      The magnitude and urgency of the biodiversity crisis is widely recognized within scientific and political organizations. However, a lack of integrated measures for biodiversity has greatly constrained the national and international response to the biodiversity crisis. Thus, integrated biodiversity indexes will greatly facilitate information transfer from science toward other areas of human society. ...
    • Nature-based tourism, resource dependence, and resilience of Arctic communities: framing complex issues in a changing environment 

      Sisneros-Kidd, Abigail M.; Monz, Christopher; Hausner, Vera Helene; Schmidt, Jennifer Irene; Clark, Douglas (Journal article; Tidsskriftartikkel, 2019-05-16)
      Current research on tourism in the Arctic has focused largely on the extent, location, and type of tourism activities that occur in the region. Recently, challenges have been identified that the tourism industry is likely to face in the wake of global changes, including climate change. Related research, conducted within and outside of the Arctic, suggests that rural communities can become economically ...
    • Naturmangfoldlovens virkninger i kommunene. En gjennomgang av kommunale erfaringer med loven 

      Andersen, Oddgeir; Bay-Larsen, Ingrid Agathe; Øian, Hogne; Fangel, Kirstin (Research report; Forskningsrapport, 2013-11-04)
      Denne studien skal gi svar på hvilke erfaringer kommunene har gjort seg etter at naturmang-foldloven (NML) trådte i kraft. Rapporten baseres på en internettbasert spørreundersøkelse til kommunene og personlige intervjuer og gruppeintervjuer (i case studiene). To verneområdes-tyrer ble valgt ut for case-studier: (1) Dovre-Sunndalsfjella og (2) Midtre Nordland nasjonal-parkstyre. Saker som er vedtatt ...
    • The need for transformative changes in the use of Indigenous knowledge along with science for environmental decision-making in the Arctic 

      Wheeler, Helen; Danielsen, Finn; Fidel, Maryann; Hausner, Vera Helene; Horstkotte, Tim; Johnson, Noor; Lee, Olivia; Mukherjee, Nibedita; Amos, Amy; Ashtorn, Heather; Ballari, Øystein; Behe, Carolina; Breton‐Honeyman, Kaitlin; Retter, Gunn-Britt; Buschman, Victoria; Jakobsen, Pâviârak; Johnson, Frank; Lyberth, Bjarne; Parrott, Jennifer A.; Pogodaev, Mikhail; Sulyandziga, Rodion; Vronski, Nikita (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-03)
      <ol> <li>Recent attention to the role of Indigenous knowledge (IK) in environmental monitoring, research and decision‐making is likely to attract new people to this field of work.</li> <li>Advancing the bringing together of IK and science in a way that is desirable to IK holders can lead to successful and inclusive research and decision‐making.</li> <li>We used the Delphi technique with 18 ...
    • The neglected season: Warmer autumns counteract harsher winters and promote population growth in Arctic reindeer 

      Loe, Leif Egil; Liston, Glen E.; Pigeon, Gabriel; Barker, Kristin; Horvitz, Nir; Stien, Audun; Forchhammer, Mads C.; Getz, Wayne M.; Irvine, Robert Justin; Lee, Aline Magdalena; Movik, Lars K.; Mysterud, Atle; Pedersen, Åshild Ønvik; Reinking, Adele K.; Ropstad, Erik; Trondrud, Liv Monica; Tveraa, Torkild; Veiberg, Vebjørn; Hansen, Brage Bremset; Albon, Steve D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-24)
      Arctic ungulates are experiencing the most rapid climate warming on Earth. While concerns have been raised that more frequent icing events may cause die‐offs, and earlier springs may generate a trophic mismatch in phenology, the effects of warming autumns have been largely neglected. We used 25 years of individual‐based data from a growing population of wild Svalbard reindeer, to test how warmer ...
    • Neighbourhood watch among common eiders (Somateria mollissima) – Does group nesting reduce nest predation? 

      Hennig, Gaute Widerøe (Master thesis; Mastergradsoppgave, 2022-05-16)
      Colony nesting is thought to be an example of the selfish herd strategy, where aggregating behaviour may be an evolutionary adaptation to reduce the risk of predation. The common eider (Somateria mollissima) is a ground nesting sea bird susceptible to high nest predation rates through the nesting period. They often nest in groups, yet some also choose to nest solitarily. I examined whether group ...
    • Neither season nor sex affects the cost of terrestrial locomotion in a circumpolar diving duck: The common eider (Somateria mollissima) 

      Rose, Kayleigh A.; Tickle, Peter G.; Lees, John J; Stokkan, Karl-Arne; Codd, Jonathan R (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • 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. ...
    • Nest site selection by northern goshawk Accipiter gentilis in northern coastal birch forests 

      Andersen, Ellen F. (Master thesis; Mastergradsoppgave, 2008-06-03)
      Most studies of nest site selection by northern goshawk, Accipiter gentilis, have been done in mixed – or coniferous forests, and emphasis has been put on the importance of large trees and relatively intact, old forest stands for nesting sites. However, goshawks in northern Norway are found in birch forests characterized by relatively small trees and a high natural level of fragmentation. In this ...
    • The nestling diet of Svalbard snow buntings identified by DNA metabarcoding 

      Stolz, Christian (Master thesis; Mastergradsoppgave, 2019-05-15)
      Tundra arthropods have considerable ecological importance as a food source for several bird species that are reproducing in the Arctic. The actual arthropod taxa comprising the chick diet are however rarely known, complicating assessments of ecological interactions. In this study, I identified the nestling diet of Svalbard snow bunting (Plectrophenax nivalis) for the first time. Faecal samples of ...
    • Net heterotrophy in High Arctic first-year and multi-year spring sea ice 

      Campbell, Karley; Lange, Benjamin; Landy, Jack Christopher; Katlein, Christian; Nicolaus, Marcel; Anhaus, Philipp; Matero, Ilkka; Gradinger, Rolf; Charette, Joannie; Duerksen, Steven; Tremblay, Pascal; Rysgaard, Søren; Tranter, Martyn; Haas, Christian; Michel, Christine (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-04)
      The net productivity of sea ice is determined by the physical and geochemical characteristics of the ice–ocean system and the activity of organisms inhabiting the ice. Differences in habitat suitability between first-year and multi-year sea ice can affect the ice algal community composition and acclimation state, introducing considerable variability to primary production within each ice type. In ...
    • New distribution records of kelp in the Kitikmeot Region, Northwest Passage, Canada, fill a pan-Arctic gap 

      Bluhm, Bodil; Brown, Kristina; Rotermund, Lina; Williams, William; Danielsen, Seth; Carmack, Eddy C. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-01)
      Kelps play important roles in ecosystems as they provide structural habitat and protection, and supply food. Given these beneficial roles and observed increases in seaweed biomass and distribution ranges across the Arctic, mapping kelp occurrence around Arctic coasts is both timely and necessary for future conservation. Here, we fill spatial gaps in the knowledge of kelp distribution in the southern ...
    • A new giant petrel (Macronectes, Aves: Procellariidae) from the Pliocene of Taranaki, New Zealand 

      Tennyson, Alan J. D.; Salvador, Rodrigo Brincalepe (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-30)
      A new species of giant petrel, Macronectes tinae sp. nov., is described from the Pliocene deposits of South Taranaki, New Zealand. The holotype is a near complete skull and the paratype a fragmentary left humerus; both come from the Tangahoe Formation, dating from the late Pliocene (Piacenzian or “Waipipian”; age estimated as ca. 3.36–3.06 Ma). The new species of giant petrel is the first fossil ...
    • New insights into regulation of anthocyanin biosynthesis in fruits 

      Jaakola, Laura (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Anthocyanins are important health-promoting pigments that make a major contribution to the quality of fruits. The biosynthetic pathway leading to anthocyanins is well known and the key regulatory genes controlling the pathway have been isolated in many species. Recently, a considerable amount of new information has been gathered on the developmental and environmental regulation of anthocyanin ...
    • New insights into the Barents Sea Calanus glacialis population dynamics and distribution 

      Aarflot, Johanna Myrseth; Eriksen, Elena; Prokopchuk, Irina P.; Svensen, Camilla; Søreide, Janne; Wold, Anette; Skogen, Morten D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-18)
      Arctic copepods are major grazers and vital food for planktivores in polar ecosystems but challenging to observe due to remoteness and seasonal sea ice coverage. Models offer higher spatio-temporal resolution, and individual-based models (IBMs) are useful since they incorporate individual variability which characterizes most copepod populations. Here, we present an IBM of the Arctic copepod Calanus ...
    • New insights into the biology of Calanus spp. (Copepoda) males in the Arctic 

      Daase, Malin; Kosobokova, Ksenia; Last, Kim S; Cohen, Jonathan H.; Choquet, Marvin; Hatlebakk, Maja Karoline Viddal; Søreide, Janne (Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
      Adult males of <i>Calanus</i> copepods in the Arctic are mainly observed between late autumn and late spring, and are seldom recorded during summer. Due to logistical constraints, there are still relatively few studies on zooplankton in high-latitude regions during the winter, and subsequently, little is known about <i>Calanus</i> males. Here, we present data on abundance, spatial distribution, ...