Now showing items 21-40 of 597

    • Varegrinder foran turbininntak ved elvekraftverk; barrierer eller inngangsport for fisk? 

      Kraabøl, Morten (Journal article; Peer reviewed, 2013)
      Trash racks at hydropower turbine intakes; barriers or entry gates for fish? At all run-ofriver hydro power plants, water is diverted through turbines for power generation. Trash racks protect the turbines from harmful ...
    • Overvåking av fiskesamfunn i store vassdrag etter vannforskriften 

      Museth, Jon; Johnsen, Stein Ivar; Kraabøl, Morten; Dokk, John Gunnar; Skurdal, Jostein (Journal article; Peer reviewed, 2013)
      Vannforskriften skal sikre en mer helhetlig og økosystembasert vannforvaltning i Norge, og om nødvendig iverksette forebyggende eller forbedrende miljøtiltak for å sikre miljøtilstanden i ferskvann, grunnvann og kystvann. ...
    • Numerical responses of saproxylic beetles to rapid increases in dead wood availability following geometrid moth outbreaks in sub-arctic mountain birch forest 

      Laksforsmo Vindstad, Ole Petter; Schultze, Sabrina; Jepsen, Jane Uhd; Biuw, Erik Martin; Kapari, Lauri Teemu; Sverdrup-Thygeson, Anne; Ims, Rolf Anker (Peer reviewed, 2014)
      Saproxylic insects play an important part in decomposing dead wood in healthy forest ecosystems, but little is known about their role in the aftermath of large-scale forest mortality caused by pest insect outbreaks. We ...
    • Commonness and rarity in the marine biosphere 

      Connolly, Sean R.; MacNeil, M. Aaron; Caley, M. Julian; Knowlton, Nancy; Cripps, Ed; Hisano, Mizue; Thibaut, Loïc M.; Bhattacharya, Bhaskar D.; Benedetti-Cecchif, Lisandro; Brainard, Russell E.; Brandt, Angelika; Bulleri, Fabio; Ellingsen, Kari Elsa; Kaiser, Stefanie; Kröncke, Ingrid; Linse, Katrin; Maggi, Elena; O'Hara, Timothy D.; Plaisance, Laetitia; Poore, Gary C.B.; Sarkar, Santosh K.; Sathpaty, Kamala K.; Schückel, Ulrike; Williams, Alan; Wilson, Robin S. (Journal article; Peer reviewed, 2014)
      Contributed by Nancy Knowlton, April 28, 2014 (sent for review November 25, 2013; reviewed by Brian McGill and Fangliang He) Explaining patterns of commonness and rarity is fundamental for understanding and managing ...
    • Low cardiac output as physiological phenomenon in hibernating, free-ranging Scandinavian brown bears (Ursus arctos) - an observational study 

      Jørgensen, Peter Godsk; Arnemo, Jon Martin; Swenson, Jon; Jensen, Jan S.; Galatius, Søren; Frøbert, Ole (Journal article; Peer reviewed, 2014)
      Background: Despite 5-7 months of physical inactivity during hibernation, brown bears (Ursus arctos) are able to cope with physiological conditions that would be detrimental to humans. During hibernation, the tissue ...
    • The relative importance of direct and indirect effects of hunting mortality on the population dynamics of brown bears 

      Gosselin, Jacinthe; Zedrosser, Andreas; Swenson, Jon; Pelletier, Fanie (Journal article; Peer reviewed, 2014)
      There is increasing evidence of indirect effects of hunting on populations. In species with sexually selected infanticide (SSI), hunting may decrease juvenile survival by increasing male turnover.We aimed to evaluate the ...
    • “Å, nå telte han deg også” – er det noe vits da? 

      Wold, Line Camilla; Gundersen, Vegard; Fangel, Kirstin (Journal article; Peer reviewed, 2014)
      Automatiske ferdselstellere benyttes i stadig flere naturområder. Vi får vite hvor mange mennesker som gikk her eller der. Vi sitter med et tall. Men hva sier tallene oss egentlig, og hvordan kan vi bruke dem i en adaptiv ...
    • The role of wild reindeer as a flagship species in new management models in Norway 

      Kaltenborn, Bjørn Petter; Andersen, Oddgeir; Gundersen, Vegard (Journal article; Peer reviewed, 2014)
      Wild reindeer are under pressure from human development projects throughout their habitat. Norway is currently making a significant move to establish a new management model based on national reindeer regions and regional ...
    • The genus Recilia Edwards, 1922 (Hemiptera, Cicadellidae) confirmed from Northern Europe 

      Endrestøl, Anders (Journal article; Peer reviewed, 2014)
      There have been some uncertainties concerning the presence of Recilia coronifer (Marshall, 1866) in Northern Europe. The species was reported from Denmark in 1992, but the whereabouts of the specimens have been uncertain. ...
    • Allelic Variation in a Willow Warbler Genomic Region Is Associated with Climate Clines 

      Larson, Keith W; Liedvogel, Miriam; Addison, BriAnne; Kleven, Oddmund; Laskemoen, Terje; Lifjeld, Jan Terje; Lundberg, Max; Åkesson, Susanne; Bensch, Staffan (Journal article, 2014)
      Local adaptation is an important process contributing to population differentiation which can occur in continuous or isolated populations connected by various amounts of gene flow. The willow warbler (Phylloscopus trochilus) ...
    • Elephants over the Cliff: Explaining Wildlife Killings in Tanzania 

      Mariki, Sayuni; Svarstad, Hanne; Benjaminsen, Tor A (Journal article; Peer reviewed, 2014)
      Many incidents of elephant killings have recently taken place in Tanzania as well as in other Africancountries. Such events are usually presented as results of the rising global demand for ivory. As we showin this case ...
    • Impacts of wild fishes attracted to open-cage salmonid farms in Norway 

      Uglem, Ingebrigt; Karlsen, Ørjan; Sánchez-Jerez, Pablo; Sæther, Bjørn-Steinar (Journal article; Peer reviewed, 2014)
      Salmonid farming affects both the environment and other industries, with impacts of wild fish attracted to fish farms being a major concern. Here, we summarized existing knowledge on the impacts of such aggregations around ...
    • Age-Related Mercury Contamination and Relationshipwith Luteinizing Hormone in a Long-Lived Antarctic Bird 

      Tartu, Sabrina; Bustamante, Paco; Goutte, Aurélie; Weimerskirch, Henri; Bustnes, Jan Ove; Chastel, Olivier (Journal article; Peer reviewed, 2014)
      Seabirds, as long-lived top predators, accumulate contaminants such as mercury (Hg), an established endocrine disruptor. In long lived species hormonal secretion varies with age; therefore, Hg-induced endocrine disruption ...
    • Stable isotope marking of otoliths duringvaccination: a novel method for mass-marking fish 

      Warren-Myers, Fletcher; Dempster, Tim; Fjelldal, Per Gunnar; Hansen, Tom; Jensen, Arne Johan; Swearer, Stephen E. (Peer reviewed, 2014)
      Tagging or marking of fishes enables the collection of population-based information for ecological research, yet few techniques enable 100% mark detection success. We tested a new mass-marking technique: otolith marking ...
    • Community-wide mesocarnivore response to partial ungulate migration 

      Henden, John-André; Stien, Audun; Bårdsen, Bård-Jørgen; Yoccoz, Nigel Gilles; Ims, Rolf Anker (Journal article, 2014)
      1. Mesocarnivores increase in number and geographic range in human-disturbed ecosystems with cascading negative impact on biodiversity. To mitigate such impacts, it is essential to identify the proximate causes of such ...
    • The risks of learning: confounding detection anddemographic trend when using count-based indices forpopulation monitoring 

      Gervasi, Vincenzo; Brøseth, Henrik; Gimenez, Olivier; Nilsen, Erlend Birkeland; Linnell, John Durrus (Peer reviewed, 2014)
      Theory recognizes that a treatment of the detection process is required to avoid producing biased estimates of population rate of change. Still, one of three monitoring programmes on animal or plant populations is focused ...
    • A catch-22 conflict: Access to semi-domestic reindeer modulatesEurasian lynx depredation on domestic sheep 

      Mattisson, Jenny; Odden, John; Linnell, John Durrus (Journal article; Peer reviewed, 2014)
      Conserving large carnivores in multi-use landscape is a global challenge. In northern Norway the presence of Eurasian lynx (Lynx lynx) conflicts greatly with the current ways of keeping free-grazing, unguarded livestock ...
    • Community-wide mesocarnivore response to partial ungulate migration 

      Henden, John-André; Stien, Audun; Bårdsen, Bård-Jørgen; Yoccoz, Nigel Gilles; Ims, Rolf Anker (Journal article; Peer reviewed, 2014)
      1.Mesocarnivores increase in number and geographic range in human-disturbed ecosystems with cascading negative impact on biodiversity. To mitigate such impacts, it is essential to identify the proximate causes of such ...
    • Record-low primary productivity and highplant damage in the Nordic Arctic Region in2012 caused by multiple weather events andpest outbreaks 

      Bjerke, Jarle W.; Karlsen, Stein Rune; Høgda, Kjell Arild; Malnes, Eirik; Jepsen, Jane Uhd; Lovibond, Sarah; Vikhamar-Schuler, Dagrun; Tømmervik, Hans (Peer reviewed, 2014)
      The release of cold temperature constraints on photosynthesis has led to increased productivity (greening) in significant parts (32–39%) of the Arctic, but much of the Arctic shows stable (57–64%) or reduced productivity ...
    • Time and size at seaward migration influence the sea survival of Salmo salar 

      Jonsson, Nina; Jonsson, Bror (Peer reviewed; Journal article, 2014)
      Whether time of seaward migration of young Atlantic salmon Salmo salar influences their subsequent survival and growth was investigated in the River Imsa, south-western Norway. Salmo salar were tagged when moving downstream ...