Blar i Department of Biological Sciences på tittel

Viser treff 1787-1806 av 2235

    • Reflections on the Use of Ecological Attributes and Traits in Quaternary Botany 

      Birks, Harry John Betteley (Journal article; Peer reviewed, 2020)
      There has been an upsurge of interest and research activity in trait-based approaches in ecology, biogeography, and macroecology. I discuss if this upsurge has impacted Quaternary botany (the study of plant remains preserved ...

    • Regional climate model simulations for Europe at 6k and 0.2k years BP: sensitivity to changes in anthropogenic deforestation 

      Strandberg, Gustav; Kjellström, Erik; Poska, Anneli; Wagner, Sebastian; Gaillard, Marie-José; Trondman, Anna-Kari; Mauri, Achille; Davis, Basil A.S.; Kaplan, Jed O.; Birks, Harry John Betteley; Bjune, Anne Elisabeth; Fyfe, Ralph; Giesecke, Thomas; Kalnina, Laimdota; Kangur, Mihkel; van der Knaap, Willem O.; Kokfelt, Ulla; Kuneš, Petr; Latalowa, Malgorzata; Marquer, Laurent; Mazier, Florence; Nielsen, Anne Birgitte; Smith, Ben; Seppä, Heikki; Sugita, Shinya (Peer reviewed; Journal article, 2014-03-28)
      This study aims to evaluate the direct effects of anthropogenic deforestation on simulated climate at two contrasting periods in the Holocene, ~6 and ~0.2 k BP in Europe. We apply We apply the Rossby Centre regional climate ...

    • Regional Expression of npy mRNA Paralogs in the Brain of Atlantic Salmon (Salmo salar, L.) and Response to Fasting 

      Tolås, Ingvill; Kalananthan, Tharmini; Gomes, Ana S.; Lai, Floriana; Norland, Sissel; Murashita, Koji; Rønnestad, Ivar (Journal article; Peer reviewed, 2021-08-26)
      Neuropeptide Y (NPY) is known as a potent orexigenic signal in vertebrates, but its role in Atlantic salmon has not yet been fully established. In this study, we identified three npy paralogs, named npya1, npya2, and npyb, ...

    • Regional impact from fin-fish farming in an intensive production area (Hardangerfjord, Norway) 

      Husa, Vivian; Kutti, Tina; Ervik, Arne S; Sjøtun, Kjersti; Hansen, Pia Kupka; Aure, Jan (Peer reviewed; Journal article, 2014)
      The Hardangerfjord is one of the largest salmon-farming areas in Norway, with an annual production of approximately 70,000 metric tonnes. The regional impact of fin-fish farming in a fjord environment was studied during ...

    • Regulation of appetite and growth of Atlantic salmon (Salmo salar L.) and effect of water oxygen, temperature and dietary energy 

      Vikeså, Vibeke (Doctoral thesis, 2017-06-27)
      High water temperature combined with low dissolved oxygen (LO or hypoxia) is one of the most challenging environmental conditions farmed fish experience. The oxygen requirement of fish increases in parallel to this, which ...

    • Reindeer trampling promotes vegetation changes in tundra heathlands: Results from a simulation experiment 

      Egelkraut, Dagmar Dorothea; Barthelemy, Hélène; Olofsson, Johan (Journal article; Peer reviewed, 2020)
      Question Herbivores exert strong influences on vegetation through activities such as trampling, defoliation, and fertilization. The combined effect of these activities on plant performance may cause dramatic vegetation ...

    • Reintroduction of dj-1 in müller cells inhibits retinal degeneration in the dj-1 deficient retina 

      Gharbi, Naouel; Røise, Dagne; Førre, Jorunn-Elise; Edson, Amanda Jayne; Hushagen, Helena Amalie; Tronci, Valentina; Frøyset, Ann-Kristin; Fladmark, Kari E. (Journal article; Peer reviewed, 2021)
      The eye is continuously under oxidative stress due to high metabolic activity and reactive oxygen species generated by daily light exposure. The redox-sensitive protein DJ-1 has proven to be essential in order to protect ...

    • Relationship between viral dose and outcome of infection in Atlantic salmon, Salmo salar L., post-smolts bath-challenged with salmonid alphavirus subtype 3 

      Jarungsriapisit, Jiraporn; Moore, Lindsey; Mæhle, Stig; Skår, Cecilie Kristin; Einen, Ann Cathrine B.; Fiksdal, Ingrid Uglenes; Morton, Hugh Craig; Stefansson, Sigurd Olav; Taranger, Geir Lasse; Patel, Sonal (Peer reviewed; Journal article, 2016-10-19)
      Salmonid alphavirus subtype 3 (SAV3) causes pancreas disease (PD) and adversely affects salmonid aquaculture in Europe. A better understanding of disease transmission is currently needed in order to manage PD outbreaks. ...

    • Relationships between calibrated ages and depth in stratigraphical sequences: an estimation procedure by mixed-effect regression 

      Heegaard, Einar; Birks, Harry John Betteley; Telford, Richard J. (Peer reviewed; Journal article, 2005)
      We present a procedure for estimating age-depth relationships in stratigraphical sequences by means of a generalized mixed-effect regression using an ancillary function for the partitioning of the fixed effect and the ...

    • Relationships between spawning ground identity, Latitude and early life thermal exposure in Northeast Arctic Cod 

      Opdal, Anders Frugård; Vikebø, Frode B.; Fiksen, Øyvind (Peer reviewed; Journal article, 2008)
      from its feeding grounds in the Barents Sea to various spawning banks along the Norwegian coast. Prior to the 1990s these banks were located on a wide latitudinal range from Finnmark (~71º N) to Møre (~63º N), or even to ...

    • The Relative Effect of Team-Based Learning on Motivation and Learning: A Self-Determination Theory Perspective 

      Jeno, Lucas Matias; Raaheim, Arild; Kristensen, Sara M.; Kristensen, Kjell Daniel Berg; Hole, Torstein Nielsen; Haugland, Mildrid Jorunn; Mæland, Silje (Peer reviewed; Journal article, 2017)
      We investigate the effects of team-based learning (TBL) on motivation and learning in a quasi-experimental study. The study employs a self-determination theory perspective to investigate the motivational effects of ...

    • Relative transcript quantification by Quantitative PCR: Roughly right or precisely wrong? 

      Skern-Mauritzen, Rasmus; Frost, Petter; Nilsen, Frank (Journal article; Peer reviewed, 2005-04-26)
      Background When estimating relative transcript abundances by quantitative real-time PCR (Q-PCR) we found that the results can vary dramatically depending on the method chosen for data analysis. Results Analyses of ...

    • Removal of large viruses and their dispersal through fecal pellets of the appendicularian Oikopleura dioica during Emiliania huxleyi bloom conditions 

      Mayers, Kyle; Lawrence, Janice; Skaar, Katrine Sandnes; Töpper, Joachim Paul; Petelenz-Kurdziel, Elzbieta Anna; Saltvedt, Marius Rydningen; Sandaa, Ruth-Anne; Larsen, Aud; Bratbak, Gunnar; Ray, Jessica Louise (Journal article; Peer reviewed, 2021)
      Despite their importance in shaping the structure and function of marine microbial food webs, little is known about factors regulating marine virus abundance. Previous work demonstrated clearance of laboratory-cultured ...

    • Removing Noise From Pyrosequenced Amplicons 

      Quince, Christopher; Lanzén, Anders; Davenport, Russell J.; Turnbaugh, Peter J. (Peer reviewed; Journal article, 2011-01-28)
      Background: In many environmental genomics applications a homologous region of DNA from a diverse sample is first amplified by PCR and then sequenced. The next generation sequencing technology, 454 pyrosequencing, has ...

    • Repeated exposure affects susceptibility and responses of Atlantic salmon (Salmo salar) towards the ectoparasitic salmon lice (Lepeophtheirus salmonis) 

      Ugelvik, Mathias Stølen; Mennerat, Adele; Mæhle, Stig; Dalvin, Sussie Trine (Journal article; Peer reviewed, 2023)
      Atlantic salmon (Salmo salar) is repeatedly exposed to and infected with ectoparasitic salmon lice (Lepeophtheirus salmonis) both in farms and in nature. However, this is not reflected in laboratory experiments where fish ...

    • Replacing fish meal with insect meal in the diet of Atlantic salmon (Salmo salar) does not impact the amount of contaminants in the feed and it lowers accumulation of arsenic in the fillet 

      Biancarosa, Irene; Sele, Veronika; Belghit, Ikram; Ørnsrud, Robin; Lock, Erik-Jan; Amlund, Heidi (Peer reviewed; Journal article, 2019)
      Insects are promising sources of protein and lipid in feeds for farmed animals. In the European Union, the use of insect meal (IM) and insect oil is permitted in fish feed. However, the European Food Safety Authority has ...

    • Replacing fish oil by vegetable oil in a low fish protein diet: effects on visceral adipose tissue and inflammation in Atlantic salmon 

      Cardoso da Rocha, Sérgio Domingos (Master thesis, 2012-06-04)
      Dietary fish oil (FO) replacement with vegetable oils in combination with high dietary fish meal replacement have previously been shown to increase Atlantic salmon plasma and liver TAG as well as visceral fat deposition. ...

    • Report from the 3rd Workshop on Trait-based approaches to ocean life 

      Fiksen, Ø.; Andersen, K.; Barton, A.; Bruggeman, J.; Dutkiewicz, S.; Lindemann, C.; Merico, A.; Record, N.; Rynearson, T. (Book of abstracts, 2017)
      How can the essential properties of community structure and ecosystem functioning be captured from a limited number of traits in organisms? In August 2017, 120 researchers from 31 nations met over four days at Solstrand ...

    • A reporting format for leaf-level gas exchange data and metadata 

      Ely, Kim S.; Rogers, Alistair; Agarwal, Deborah A.; Ainsworth, Elizabeth A; Albert, Loren P.; Ali, Ashehad Ashween; Anderson, Jeremiah; Aspinwall, Michael J.; Bellasio, Chandra; Bernacchi, Carl; Bonnage, Steve; Buckley, Thomas N.; Bunce, James; Burnett, Angela C.; Busch, Florian A.; Cavanagh, Amanda; Cernusak, Lucas A.; Crystal-Ornelas, Robert; Damerow, Joan; Davidson, Kenneth J.; de Kauwe, Martin G.; Dietze, Michael C.; Domingues, Tomas F.; Dusenge, Mirindi E.; Ellsworth, David S.; Evans, John R.; Gauthier, Paul P.G.; Gimenez, Bruno O.; Gordon, Elizabeth P.; Gough, Christopher M.; Rechsteiner, Aud Helen Halbritter; Hanson, David T.; Heskel, Mary; Hogan, J. Aaron; Hupp, Jason R.; Jardine, Kolby; Kattge, Jens; Keenan, Trevor F.; Kromdijk, Johannes; Kumarathunge, Dushan P.; Lamour, Julien; Leakey, Andrew D.B.; LeBauer, David S.; Li, Qianyu; Lundgren, Marjorie R.; McDowell, Nate; Meacham-Hensold, Katherine; Medlyn, Belinda E; Moore, David J.P.; Negrón-Juárez, Robinson; Niinemets, Ülo; Osborne, Colin P.; Pivovaroff, Alexandria L.; Poorter, Hendrik; Reed, Sasha C.; Ryu, Youngryel; Sanz-Saez, Alvaro; Schmiege, Stephanie C.; Serbin, Shawn P.; Sharkey, Thomas D.; Slot, Martijn; Smith, Nicholas G.; Sonawane, Balasaheb V.; South, Paul F.; Souza, Daisy C.; Stinziano, Joseph R.; Stuart-Haëntjens, Ellen; Taylor, Samuel H.; Tejera, Mauricio D.; Uddling, Johan; Vandvik, Vigdis; Varadharajan, Charuleka; Walker, Anthony P.; Walker, Berkley J.; Warren, Jeffrey M.; Way, Danielle A.; Wolfe, Brett T.; Wu, Jin; Wullschleger, Stan D.; Xu, Chonggang; Yan, Zhengbing; Yang, Dedi (Journal article; Peer reviewed, 2021)
      Leaf-level gas exchange data support the mechanistic understanding of plant fluxes of carbon and water. These fluxes inform our understanding of ecosystem function, are an important constraint on parameterization of ...

    • Reproducing the virus-to-copepod link in Arctic mesocosms using host fitness optimization. 

      Thingstad, T. Frede; Larsen, Aud; Bratbak, Gunnar; Våge, Selina; Egge, Jorun Karin; Sandaa, Ruth-Anne; Nejstgaard, Jens Christian (Journal article; Peer reviewed, 2020)
      By shunting material out of the predatory pathway toward detritus and dissolved material, viruses are believed to have an important impact on biogeochemical functions of the pelagic microbial food web. To include viruses ...