Blar i Faculty of Mathematics and Natural Sciences på tittel

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    • "A cleaner break" - Genetic analysis identifies two major groups of ballan wrasse (Labrus bergylta) within Scandinavia and evidence of phenotype derived divergence 

      Seljestad, Gaute Wilhelmsen (Master thesis, 2019-06-21)
      For a long time, sea lice have represented the major financial and fish welfare challenge of the salmonid farming industry. In the late 1980s, the use of parasite-eating cleaner fish, first and foremost wrasses (family ...

    • “A cleaner break”: Genetic divergence between geographic groups and sympatric phenotypes revealed in ballan wrasse (Labrus bergylta) 

      Seljestad, Gaute; Sanchez, Maria Quintela; Faust, Ellika; Halvorsen, Kim Aleksander Tallaksen; Besnier, Francois; Jansson, Eeva; Dahle, Geir; Knutsen, Halvor; André, Carl; Folkvord, Arild; Glover, Kevin (Journal article; Peer reviewed, 2020)
      Capture and long‐distance translocation of cleaner fish to control lice infestations on marine salmonid farms has the potential to influence wild populations via overexploitation in source regions, and introgression in ...

    • Cleaner Fish Do Not Impact the Pigmentation of Salmon Lice (Lepeophtheirus salmonis) in Commercial Aquaculture Cages 

      Imsland, Albert; Berg, Jon Petter; Nola, Velimir; Geitung, Lena; Oldham, Tina Marie Wier (Journal article; Peer reviewed, 2023-09-10)
      Salmon lice are one of the biggest challenges to sustainable salmonid aquaculture. The species display high evolutionary potential, which is evident by its development of resistance to numerous chemical compounds used for ...

    • Cleaner fish growth, welfare and survival in Atlantic salmon sea cages during an autumn-winter production 

      Geitung, Lena; Wright, Daniel William; Oppedal, Frode; Stien, Lars Helge; Vågseth, Tone; Madaro, Angelico (Journal article; Peer reviewed, 2020)
      Cleaner fish used as a biological control agent against salmon lice is rapidly increasing in Atlantic salmon aquaculture. However, concerns have been raised about the welfare and mortality of cleaner fish in salmon cage ...

    • Climate adaptation of pre-Viking societies 

      Bajard, Manon Juliette Andree; Ballo, Eirik Gottschalk; Høeg, Helge Irgens; Bakke, Jostein; Støren, Eivind Wilhelm Nagel; Loftsgarden, Kjetil; Iversen, Frode; Hagopian, William Martin; Jahren, Anne Hope Florine; Svensen, Henrik Hovland; Krüger, Kirstin (Journal article; Peer reviewed, 2022)
      Understanding how the Viking societies were impacted by past climate variability and how they adapted to it has hardly been investigated. Here, we have carried out a new multi-proxy investigation of lake sediments, including ...

    • Climate and biotic interactions – drivers of plant community structure and ecosystem functioning in alpine grasslands 

      Jaroszynska, Francesca (Doctoral thesis, 2019-10-21)
      The governing of biodiversity by climate is profound. Climate as reflected through the major global temperature and precipitation axes determines the distribution of species according to their climatic tolerance, or niche. ...

    • Climate based multi-year predictions of the Barents Sea cod stock. 

      Årthun, Marius; Bogstad, Bjarte; Daewel, Ute; Keenlyside, Noel; Sandø, Anne Britt; Schrum, Corinna; Ottersen, Geir (Peer reviewed; Journal article, 2018-10-24)
      Predicting fish stock variations on interannual to decadal time scales is one of the major issues in fisheries science and management. Although the field of marine ecological predictions is still in its infancy, it is ...

    • Climate change and safe design of ship structures 

      Bitner-Gregersen, Elzbieta M.; Vanem, Erik; Gramstad, Odin; Hørte, Torfinn; Aarnes, Ole Johan; Reistad, Magnar; Breivik, Øyvind; Magnusson, Anne Karin; Natvig, Bent (Peer reviewed; Journal article, 2018-02)
      The paper addresses projected changes of wave climate in the North Atlantic and their impact on the safe design of ships, with a particular focus given on associated uncertainties. The Fifth Assessment Report of the ...

    • Climate change and the effect of darker coastal water on NCW euphotic zone properties - A theoretical study 

      Ihler, Vilde Steinsdotter (Master thesis, 2016-11-21)
      The Norwegian Coastal Water (NCW) derives from an extensive outflow of freshwater from the Baltic Sea and river runoff from the Norwegian coast, making the water less saline than the North Atlantic Water (NAW). Freshwater ...

    • Climate change in fish: effects of respiratory constraints on optimal life history and behaviour 

      Holt, Rebecca; Jørgensen, Christian (Peer reviewed; Journal article, 2015)
      The difference between maximum metabolic rate and standard metabolic rate is referred to as aerobic scope, and because it constrains performance it is suggested to constitute a key limiting process prescribing how fish may ...

    • Climate change in the North – past, present and future 

      Thiede, Jörn; Johannessen, Ola M. (Journal article; Peer reviewed, 2008)
      The Nordic countries have produced famous polar explorers and researchers who have generated climate research schools at a variety of locations. The dependence of these countries with respect to the lifelihood of their ...

    • Climate change winner in the deep sea? Predicting the impacts of climate change on the distribution of the glass sponge Vazella pourtalesii 

      Beazley, Lindsay; Kenchington, Ellen; Murillo, Francisco Javier; Brickman, David; Wang, Zeliang; Davies, Andrew; Roberts, Emyr Martyn; Rapp, Hans Tore (Journal article; Peer reviewed, 2021)
      Shallow-water sponges are often cited as being ‘climate change winners’ due to their resiliency against climate change effects compared to other benthic taxa. However, little is known of the impacts of climate change on ...

    • Climate controlled mechanisms of subpolar North Atlantic carbon uptake 

      Fröb, Friederike (Doctoral thesis, 2017-06-27)
      The North Atlantic is a key region for global climate variability. Earlier studies have shown changes in the large-scale circulation, air-sea heat and freshwater fluxes and the carbon cycle in the North Atlantic in relation ...

    • A climate for seed predation: Precipitation affects seed removal by the major groups of granivores differently across boreal, sub-alpine and alpine grasslands 

      Schwitters, Joris Emil Lie (Master thesis, 2018-12-15)
      Granivory, the seed predation by animals, plays an important role for plant and animal populations, and impact species composition and functioning of ecosystems. The intensity in granivory depends on various biotic and ...

    • Climate forcing of summer carbon drawdown in the subpolar North Atlantic 

      Svanevik, Magni (Master thesis, 2015-08-28)
      This thesis present a 9-year long time series of surface seawater fCO2 data obtained aboard the MV Nuka Arctica. The Nuka Arctica provide full seasonal fCO2 measurements which give a good picture of the fCO2 variability ...

    • Climate History of the Arctic: temperature reconstruction of an arctic lake on Spitsbergen based on chironomid 

      Fadnes, Kari (Master thesis, 2010-06-01)
      ABSTRACT. The increase in global climatic changes seen in recent years is debated to be a result from expanding anthropogenic activity. The aim for the study is to contribute to the climatic history at western Spitsbergen ...

    • Climate in Svalbard 2100 

      Adakudlu, Muralidhar; Andresen, J; Bakke, Jostein; Beldring, S.; Benestad, Rasmus; Bilt, Willem van der; Bogen, J.; Borstad, Christopher Paul; Breili, Kristian; Breivik, Øyvind; Børsheim, Knut Yngve; Christiansen, Hanne H; Dobler, Andreas; Engeset, Rune; Frauenfelder, Regula; Gerland, Sebastian; Gjelten, Herdis Motrøen; Gundersen, Jeanette; Isaksen, Ketil; Jaedicke, Christian; Kierulf, Halfdan; Kohler, Jack; Li, H.; Lutz, J.; Melvold, Kjetil; Mezghani, Abdelkader; Nilsen, F.; Nilsen, Irene Brox; Nilsen, Jan Even Øie; Pavlova, O.; Ravndal, Ole; Risebrobakken, Bjørg; Saloranta, Tuomo; Sandven, Stein; Schuler, Thomas; Simpson, Matthew James Ross; Skogen, Morten D.; Smedsrud, Lars H.; Sund, Monica; Vikhamar-Schuler, D.; Westermann, Sebastian; Wong, Wai Kwok (Research report, 2019-01)
      This report was commissioned by the Norwegian Environment Agency in order to provide basic information for use in climate change adaptation in Svalbard. It includes descriptions of historical, as well as projections for ...

    • The Climate Response to Emissions Reductions Due to COVID-19: Initial Results From CovidMIP 

      Jones, Chris D.; Hickman, Jonathan; Rumbold, Steven T; Walton, Jeremy; Lamboll, Robin; Skeie, Ragnhild Bieltvedt; Fiedler, Stephanie; Forster, Piers M.; Rogelj, Joeri; Abe, Manabu; Botzet, Michael; Calvin, Katherine; Cassou, Christophe; Cole, Jason N S; Davini, Paolo; Deushi, Makoto; Dix, Martin; Fyfe, John; Gillett, Nathan P.; Ilyina, Tatiana; Kawamiya, Michio; Kelley, Maxwell; Kharin, Slava; Koshiro, Tsuyoshi; Li, Hongmei; MacKallah, Chloe; Müller, Wolfgang A.; Nabat, Pierre; Van Noije, Twan; Nolan, Paul; Ohgaito, Rumi; Oliviè, Dirk Jan Leo; Oshima, Naga; Parodi, Jose; Reerink, Thomas J.; Ren, Lili; Romanou, Anastasia; Séférian, Roland; Tang, Yangming; Timmreck, Claudia; Tjiputra, Jerry; Tourigny, Etienne; Tsigaridis, Kostas; Wang, Hailong; Wu, Mingxuan; Wyser, Klaus; Yang, Shuting; Yang, Yang; Ziehn, Tilo (Journal article; Peer reviewed, 2021)
      Many nations responded to the corona virus disease-2019 (COVID-19) pandemic by restricting travel and other activities during 2020, resulting in temporarily reduced emissions of CO2, other greenhouse gases and ozone and ...

    • Climate transition at the Eocene-Oligocene influenced by bathymetric changes to the Atlantic-Arctic oceanic gateways 

      Straume, Eivind Olavson; Nummelin, Aleksi Henrynpoika; Gaina, Carmen; Nisancioglu, Kerim Hestnes (Journal article; Peer reviewed, 2022)
      The Eocene–Oligocene Transition (∼33.9 Ma) marks the largest step transformation within the Cenozoic cooling trend and is characterized by a sudden growth of the Antarctic ice sheets, cooling of the interior ocean, and the ...

    • Climate variability in the subarctic area for the last 2 millennia 

      Nicolle, Marie; Debret, Maxime; Massei, Nicolas; Colin, Christophe; de Vernal, Anne; Divine, Dmitry V; Werner, Johannes; Hormes, Anne; Korhola, Atte; Linderholm, Hans W. (Peer reviewed; Journal article, 2018-01-25)
      To put recent climate change in perspective, it is necessary to extend the instrumental climate records with proxy data from paleoclimate archives. Arctic climate variability for the last 2 millennia has been investigated ...