Recent additions

  • Tree thinking cannot taken for granted: challenges for teaching phylogenetics 

    Sandvik, Hanno (Journal article; Tidsskriftartikkel; Peer reviewed, 2008-02-05)
    Tree thinking is an integral part of modern evolutionary biology, and a necessary precondition for phylogenetics and comparative analyses. Tree thinking has during the 20th century largely replaced group thinking, de ...
  • The role of a dominant predator in shaping biodiversity over space and time in a marine ecosystem 

    Ellingsen, Kari Elsa; Anderson, Marti J.; Shackell, Nancy L.; Tveraa, Torkild; Yoccoz, Nigel Gilles; Frank, Kenneth T. (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-24)
    Exploitation of living marine resources has resulted in major changes to populations of targeted species and functional groups of large-bodied species in the ocean. However, the effects of overfishing and collapse of large ...
  • Takvatnprosjektet - Forskning og kultivering av en overbefolka røyeberstand 

    Amundsen, Per-Arne; Smalås, Aslak; Knudsen, Rune; Kristoffersen, Roar; Siwertsson, Anna; Klemetsen, Anders (Research report; Forskningsrapport, 2015)
    Overbefolka fiskebestander er et stort problem i mange av våre innsjøer. Det typiske kjennetegnet er en stor tetthet av gammel, småvokst og mager fisk, gjerne med en høy infeksjon av parasitter. Hardt uttynningsfiske ...
  • Effects of mortality changes on biomass and production in Calanus spp. populations 

    Skardhamar, Jofrid; Reigstad, Marit; Carroll, Jolynn; Eiane, Ketil; Wexels Riser, Christian; Slagstad, Dag (Journal article; Tidsskriftartikkel; Peer reviewed, 2011-04-28)
    Calanus species are the main link between primary producers and higher trophic-level organisms in the Barents Sea. The natural mortality rate is an essential parameter for determining the standing stock of Calanus, but it ...
  • Marine migration and habitat use of anadromous brown trout Salmo trutta 

    Eldøy, Sindre Håvarstein; Davidsen, Jan Grimsrud; Thorstad, Eva Bonsak; Whoriskey, F.; Aarestrup, K.; Næsje, Tor; Rønning, Lars; Sjursen, Aslak Darre; Rikardsen, Audun H.; Arnekleiv, Jo Vegar (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-05-22)
    The biology and ecology of anadromous brown trout Salmo trutta at sea is poorly understood. This study provided information on spatial and temporal distribution of sea trout in the ocean. The behaviour of 115 individuals ...
  • "Being the master in one’s own house:" Opinions and experiences with the Finnmark Estate 

    Broderstad, Else Grete; Hausner, Vera Helene; Josefsen, Eva; Søreng, Siri Ulfsdatter (Conference object; Konferansebidrag, 2015-08-26)
    In northernmost Norway the right to own and manage the land in Finnmark, was transferred from the state to the the Finnmark Estate (FeFo) in 2005. The land tenure arrangement was a result of land claims made by the ...
  • Habitat selection by a marine copepod during the productive season in the Subarctic 

    Basedow, Sünnje Linnéa; Tande, Kurt Steinar; Stige, Leif Christian (Journal article; Tidsskriftartikkel; Peer reviewed, 2010-10-14)
    Few studies have analysed the depth distribution of marine zooplankton at high-resolution, and knowledge obtained from theoretical modelling studies predominates over that from empirical field studies. We analysed depth ...
  • Identification and Evaluation of 21 Novel Microsatellite Markers from the Autumnal Moth (Epirrita autumnata) (Lepidoptera: Geometridae) 

    Aarnes, Siv Grethe; Fløystad, Ida; Schregel, Julia; Vindstad, Ole Petter L.; Jepsen, Jane Uhd; Eiken, Hans Geir; Ims, Rolf Anker; Hagen, Snorre (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09-17)
    The autumnal moth (Epirrita autumnata) is a cyclically outbreaking forest Lepidoptera with circumpolar distribution and substantial impact on Northern ecosystems. We have isolated 21 microsatellites from the species to ...
  • No evidence for leaf-trait dissimilarity effects on litter decomposition, fungal decomposers, and nutrient dynamics 

    Frainer, Andre Barbosa; Moretti, Marcelo S.; Xu, Wenjing; Gessner, Mark O. (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02)
    Biodiversity and ecosystem-functioning theory suggest that litter mixtures composed of dissimilar leaf species can enhance decomposition due to species trait complementarity. Here we created a continuous gradient of litter ...
  • Status for småblankbestanden i Namsen 

    Thorstad, Eva Bonsak; Hindar, Kjetil; Berg, Ole Kristian; Saksgård, Laila M.; Norum, Ine Cecilie Jordalen; Sandlund, Odd Terje; Hesthagen, Trygve H.; Lehn, Lars Ove (Research report; Forskningsrapport, 2009-01)
    Småblanken, som finnes kun i Namsenvassdraget, er den eneste bestanden av ferskvannsstasjonær laks i Europa som lever hele livet i elva og ikke har vandringer til innsjøer. Her utredes status for bestanden basert på 1) ...
  • First isolation, identification, phenotypic and genotypic characterization of Brucella abortus biovar 3 from dairy cattle in Tanzania 

    Mtenga, Coletha Mathew; Stokstad, Maria; Johansen, Tone Kristin Bjordal; Klevar, Siv; Mdgela, Robinson H.; Mwamengele, G.L.; Michel, P; Escobar, L.; Fretin, D.; Godfroid, Jacques (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-07-21)
    Background: Brucellosis is a disease of worldwide public health and economic importance. Successful control is based on knowledge of epidemiology and strains present in an area. In developing countries, most investigations ...
  • Detection of serum neutralizing antibodies to Simbu sero-group viruses in cattle in Tanzania 

    Mtenga, Coletha Mathew; Klevar, Siv; Elbers, A.R.W.; van der Pool, W.H.M.; Kirkland, P.D.; Godfroid, Jacques; Mdgela, Robinson H.; Mwamengele, G.L.; Stokstad, Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08-15)
    Background: Orthobunyaviruses belonging to the Simbu sero-group occur worldwide, including the newly recognized Schmallenberg virus (SBV) in Europe. These viruses cause congenital malformations and reproductive losses in ...
  • Black-legged Kittiwake Rissa tridactyla adults and chicks share the same diet in the southern Barents Sea 

    Thorvaldsen, Renate; Barrett, Robert; Pedersen, Torstein (Journal article; Tidsskriftartikkel; Peer reviewed, 2015)
    The Black-legged Kittiwake Rissa tridactyla population is declining throughout its North Atlantic range. In Norway, the species is classified as Endangered on the Norwegian Red List. Studies of diet are one important ...
  • On the relative effect of spawning asynchrony, sperm quantity, and sperm quality on paternity under sperm competition in an external fertilizer 

    Egeland, Torvald Blikra; Rudolfsen, Geir; Nordeide, Jarle Tryti; Folstad, Ivar (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-07-14)
    How much of a fitness benefit is obtained by dominant males of external fertilizers from releasing ejaculates in synchrony with female egg-release when engaging in sperm competition, and what is the most important sperm ...
  • Morphological divergence between three Arctic charr morphs - the significance of the deep-water environment. 

    Skoglund, Sigrid Østrem; Siwertsson, Anna; Knudsen, Rune; Amundsen, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-07-14)
    Morphological divergence was evident among three sympatric morphs of Arctic charr (Salvelinus alpinus (L.)) that are ecologically diverged along the shallow-, deep-water resource axis in a subarctic postglacial lake ...
  • Harbour seal Phoca vitulina movement patterns in the high-Arctic archipelago of Svalbard, Norway 

    Blanchet, Marie-Anne Ermeline; Lydersen, Christian; Ims, Rolf Anker; Lowther, Andrew D.; Kovacs, Kit (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-09-03)
    Harbour seals Phoca vitulina are mainly considered a temperate species, but the world’s northernmost population resides year-round in the high-Arctic archipelago of Svalbard. In this study we document post-moulting at-sea ...
  • Response of Methanogens in Arctic Sediments to Temperature and Methanogenic Substrate Availability 

    Blake, Lynsay; Tveit, Alexander Tøsdal; Øvreås, Lise; Head, Ian M.; Gray, Neil (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-17)
    Although cold environments are major contributors to global biogeochemical cycles, comparatively little is known about their microbial community function, structure, and limits of activity. In this study a microcosm based ...
  • 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 ...
  • Metabolic and trophic interactions modulate methane production in response to warming 

    Tveit, Alexander Tøsdal; Urich, Tim; Frenzel, Peter; Svenning, Mette Marianne (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-04-27)
    Arctic permafrost soils store large amounts of soil organic carbon (SOC) that could be released into the atmosphere as methane (CH4) in a future warmer climate. How warming affects the complex microbial network decomposing ...
  • Resistance of a sub-arctic bird community to severe forest damage caused by geometrid moth outbreaks 

    Jepsen, Jane Uhd; Ims, Rolf Anker; Vindstad, Ole Petter Laksforsmo (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-05-01)
    Outbreaks by geometrid moths periodically cause mass mortality of trees and state changes in understorey vegetation in sub-arctic mountain birch forest in northern Scandinavia. In order to assess the short-term impacts of ...

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