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    • Recent Harp and Hooded Seal Pup Production Estimates in the Greenland Sea Suggest Ecology-Driven Declines 

      Biuw, Martin; Øigård, Tor Arne; Nilssen, Kjell Tormod; Stenson, Garry; Lindblom, Lotta; Poltermann, Michael Tino; Kristiansen, Martin; Haug, Tore (Peer reviewed; Journal article, 2022)
      Pup production of the Greenland Sea populations of harp (Pagophilus groenlandicus) and hooded (Cystophora cristata) seals were estimated based upon aerial surveys in March 2018. One fixed-wing aircraft was used for large-area ...

    • Recent trend reversal for declining European seagrass meadows 

      de los Santos, Carmen B; Krause-Jensen, Dorte; Alcoverro, Teresa; Marba, Núria; Duarte, Carlos M.; van Katwijk, Marieke M; Perez, Marta; Romero, Javier; Sanchez-Lizaso, Jose L; Roca, Guillem; Jankowska, Emilia; Perez-Llorens, Jose Lucas; Fournier, Jérôme; Montefalcone, Monica; Pergent, Gerard; Ruiz, Juan M; Cabaco, Susana; Cook, Kevan; Wilkes, Robert J; Moy, Frithjof Emil; Trayter, Gregori Munoz-Ramos; Arano, Xavier Seglar; de Jong, Dick J; Fernandez-Torquemada, Yolanda; Auby, Isabelle; Vergara, Juan J; Santos, Rui (Journal article; Peer reviewed, 2019)
      Seagrass meadows, key ecosystems supporting fisheries, carbon sequestration and coastal protection, are globally threatened. In Europe, loss and recovery of seagrasses are reported, but the changes in extent and density ...

    • Recent warming and freshening of the Norwegian Sea observed by Argo data 

      Mork, Kjell Arne; Skagseth, Øystein; Søiland, Henrik (Journal article; Peer reviewed, 2019)
      Climate variability in the Norwegian Sea, comprising the Norwegian and Lofoten Basins, was investigated based upon monthly estimates of ocean heat and freshwater contents using data from Argo floats during 2002–18. Both ...

    • ReCodLiver0.9: Overcoming Challenges in Genome-Scale Metabolic Reconstruction of a Non-model Species 

      Hanna, Eileen Marie; Zhang, Xiaokang; Eide, Marta; Fallahi, Shirin; Furmanek, Tomasz; Yadetie, Fekadu; Zielinski, Daniel Craig; Goksøyr, Anders; Jonassen, Inge (Peer reviewed; Journal article, 2020)
      The availability of genome sequences, annotations, and knowledge of the biochemistry underlying metabolic transformations has led to the generation of metabolic network reconstructions for a wide range of organisms in ...

    • Recommendations for dietary level of micro-minerals and vitamin D3 to Atlantic salmon (Salmo salar) parr and post-smolt when fed low fish meal diets 

      Antony Jesu Prabhu, Antony Jesu Prabhu; Lock, Erik-Jan; Hemre, Gro Ingunn; Hamre, Kristin; Espe, Marit; Olsvik, Pål Asgeir; Silva, Joana; Hansen, Ann-Cecilie; Johansen, Johan; Sissener, Nini; Waagbø, Rune (Journal article; Peer reviewed, 2019)
      Atlantic salmon (Salmo salar) feeds have changed drastically in their composition from being predominantly marine-based to plant-based. This has altered the dietary supply and availability of micro-nutrients to Atlantic ...

    • Recommendations on methods for the detection and control of biological pollution in marine coastal waters 

      Olenin, Sergej; Elliott, Michael; Bysveen, Ingrid; Culverhouse, Phil F.; Daunys, Darius; Dubelaar, George B.J.; Gollasch, Stephan; Goulletquer, Philippe; Jelmert, Anders; Kantor, Yuri; Mézeth, Kjersti Bringsvor; Minchin, Dan; Occhipinti-Ambrogi, Anna; Olenina, Irina; Vandekerkhove, Jochen (Journal article; Peer reviewed, 2011-09)
      Adverse effects of invasive alien species (IAS), or biological pollution, is an increasing problem in marine coastal waters, which remains high on the environmental management agenda. All maritime countries need to assess ...

    • Reconstructing the stock–recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential 

      Marshall, C. Tara; Yaragina, Natalia A.; Ådlandsvik, Bjørn; Dolgov, Andrey V. (Journal article; Peer reviewed, 2000)
      Correlation and simulation analyses suggest that, for the Northeast Arctic (NA) cod stock, the total lipid energy (TLE (kJ)) contained in the livers of mature females is proportional to total egg production, making TLE a ...

    • Reconstruction of the birth of a male sex chromosome present in Atlantic herring 

      Rafati, Nima; Chen, Junfeng; Herpin, Amaury; Pettersson, Mats; Han, Fan; Feng, Chungang; Wallerman, Ola; Rubin, Carl-Johan; Péron, Sandrine; Cocco, Arianna; Larsson, Mårten; Trötschel, Christian; Poetsch, Ansgar; Korsching, Kai; Bönigk, Wolfgang; Körschen, Heinz G.; Berg, Florian; Folkvord, Arild; Benjamin Kaupp, Kaupp; Schartl, Manfred; Andersson, Leif (Peer reviewed; Journal article, 2020)
      The mechanisms underlying sex determination are astonishingly plastic. Particularly the triggers for the molecular machinery, which recalls either the male or female developmental program, are highly variable and have ...

    • The record-warm Barents Sea and 0-group fish response to abnormal conditions 

      Eriksen, Elena; Bagøien, Espen; Strand, Espen; Primicerio, Raul; Prokhorova, Tatiana; Trofimov, Alexander; Prokopchuk, Irina (Peer reviewed; Journal article, 2020)
      The Barents Sea is a nursery area for many commercially and ecologically important fish stocks, and this whole region is presently subject to rapid climatic change from a cold period in the 1980s to a record warm period ...

    • Recorded captures of American lobster (Homarus Americanus) in Swedish waters and an observation of predation on the European lobster (Homarus Gammarus) 

      Øresland, Vidar; Ulmestrand, Mats; Agnalt, Ann-Lisbeth; Oxby, Gert (Peer reviewed; Journal article, 2017)

    • Recovery from exhaustive swimming and its effect on fillet quality in haddock (Melanogrammus aeglefinus) 

      Karlsson-Drangsholt, Anders; Svalheim, Ragnhild Aven; Aas-Hansen, Øyvind; Olsen, Stein Harris; Midling, Kjell Øivind; Breen, Michael; Grimsbø, Endre; Johnsen, Helge K. (Journal article; Peer reviewed, 2018)
      Wild haddock (Melanogrammus aeglefinus) of commercial size (0.8–2.49 kg, 45–60 cm) were swum to exhaustion in a large swim tunnel and then allowed to recuperate for 0, 3 or 6 h, to investigate the effects of exhaustive ...

    • Recovery of algal turfs following removal 

      Pessarrodona, Albert; Filbee-Dexter, Karen; Wernberg, Thomas (Peer reviewed; Journal article, 2023)
      As a consequence of the increasing human footprint on the environment, marine ecosystems are rapidly transforming into new configurations dominated by early-successional and weedy life forms. Algal turfs, in particular, ...

    • Recreational sea fishing in Europe in a global context—Participation rates, fishing effort, expenditure, and implications for monitoring and assessment 

      Kieran, Hyder; Weltersbach, Marc Simon; Armstrong, Mark; Ferter, Keno; Townhill, Bryony; Ahvonen, Anssi; Arlinghaus, Robert; Baikov, Andrei; Bellanger, Manuel; Birzaks, Janis; Borch, Trude Kristin; Cambie, Giulia; de Graaf, Martin; Diogo, Hugo M C; Dziemian, Lukasz; Gordoa, Ana; Grzebielec, Ryszard; Hartill, Bruce; Kagervall, Anders; Kapiris, Kostas; Karlsson, Martin; Kleiven, Alf Ring; Lejk, Adam M; Levrel, Harold; Lovell, Sabrina; Lyle, Jeremy; Miolanen, Pentti; Monkman, Graham; Morales-Nin, Beatriz; Mugerza, Estanis; Martinez, Roi; O'Reilly, Paul F; Olesen, Hans Jakob; Papadopoulos, Anastasios; Pita, Pablo; Radford, Zachary; Radtke, Krzysztof; Roche, William; Rocklin, Delphine; Ruiz, Jon; Scougal, Callum; Silvestri, Roberto; Skov, Christian; Steinback, Scott; Sundeløf, Andreas; Svagzdys, Arvydas; Turnbull, David; van der Hammen, Tessa; van Voorhees, David; van Winsen, Frankwin; Verleye, Thomas J; Veiga, Pedro; Vølstad, Jon Helge; Zarauz, Lucia; Zolubas, Tomas; Strehlow, Harry Vincent (Journal article; Peer reviewed, 2017)
      Marine recreational fishing (MRF) is a high-participation activity with large economic value and social benefits globally, and it impacts on some fish stocks. Although reporting MRF catches is a European Union legislative ...

    • Recruitment decline in North Sea herring is accompanied by reduced larval growth rates 

      Payne, Mark R.; Ross, Stine D.; Clausen, Lotte Worsøe; Munk, Peter; Mosegaard, Henrik; Nash, Richard D.M. (Journal article; Peer reviewed, 2013-08-28)
      The stock of North Sea autumn spawning herring Clupea harengus (L.) has shown an unprecedented 10 yr sequence of sharply reduced recruitment, in spite of a high spawning biomass. Recent work has identified this below-expected ...

    • Recruitment of Atlantic cod stocks in relation to temperature and advection of copepod populations 

      Sundby, Svein (Journal article; Peer reviewed, 2000-11)
      The recruitment of Atlantic cod stocks shows different responses to temperature changes. Cod stocks inhabiting the lower temperature range show generally an increase in recruitment with increasing temperature, while cod ...

    • Recruitment of shrimp (Pandalus borealis) in the Barents Sea related to spawning stock and environment 

      Aschan, Michaela; Ingvaldsen, Randi (Journal article; Peer reviewed, 2008-10)
      The shrimp spawn in autumn, and the females carry their eggs as out roe until spring when the larvae hatch. Within a period of 2 months the shrimp larvae settle to the bottom. It has been claimed that the year-class strength ...

    • Recruitment regime shifts and nonstationarity are widespread phenomena in harvestable stocks experiencing pronounced climate fluctuations 

      Ma, Shuyang; Huse, Geir; Ono, Kotaro; Nash, Richard David Marriott; Sandø, Anne Britt; Nedreaas, Kjell Harald; Hjøllo, Solfrid Sætre; Sundby, Svein; Clegg, Thomas L; Vølstad, Jon Helge; Kjesbu, Olav Sigurd (Peer reviewed; Journal article, 2023)
      Methods to reliably identify jump discontinuities in biological time series and to assess the specific contribution of various covariates are rapidly progressing. Here, we took advantage of these statistical improvements ...

    • Recruitment Variability in North Atlantic Cod and Match-Mismatch Dynamics 

      Kristiansen, Trond; Drinkwater, Ken; Lough, R. G.; Sundby, Svein (Journal article; Peer reviewed, 2011-03-07)
      Background Fisheries exploitation, habitat destruction, and climate are important drivers of variability in recruitment success. Understanding variability in recruitment can reveal mechanisms behind widespread decline in ...

    • Recruitment variability of fish stocks in the Barents Sea: Spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017) 

      Skjoldal, Hein Rune; Eriksen, Elena; Gjøsæter, Harald; Skagseth, Øystein; Prozorkevich, Dmitry A.; Lien, Vidar Surén (Peer reviewed; Journal article, 2022)
      Young-of-the-year (0-group) fish in the Barents Sea have been investigated in an annual joint Norwegian-Russian pelagic trawl survey in autumn, using a standardized procedure since 1980. We use a conceptual framework of ...

    • Recurrent convergent evolution at amino acid residue 261 in fish rhodopsin 

      Hill, Jason; Enbody, Erik D.; Pettersson, Mats E.; Sprehn, C. Grace; Bekkevold, Dorte; Folkvord, Arild; Laikre, Linda; Kleinau, Gunnar; Scheerer, Patrick; Andersson, Leif (Journal article; Peer reviewed, 2019)
      The evolutionary process that occurs when a species colonizes a new environment provides an opportunity to explore the mechanisms underlying genetic adaptation, which is essential knowledge for understanding evolution and ...