Browsing Department of Biological Sciences by Title

Now showing items 1760-1779 of 2227

    • Recent increases in species richness and shifts in altitudinal distributions of Norwegian mountain plants 

      Klanderud, Kari; Birks, Harry John Betteley (Peer reviewed; Journal article, 2003)
      Opportunities for observing long-term changes in natural biota are rare. Observations on the distribution and frequency of vascular plants were performed on 23 mountains situated along a west–east gradient in Jotunhei men, ...

    • Recent trends in abundance and fishing pressure of agency-assessed small pelagic fish stocks 

      Hilborn, Ray; Buratti, Claudio C.; Díaz Acuña, Erich; Hively, Daniel; Kolding, Jeppe; Kurota, Hiroyuki; Baker, Nicole; Mace, Pamela M.; de Moor, Carryn L.; Muko, Soyoka; Osio, Giacomo Chato; Parma, Ana M.; Quiroz, Juan-Carlos; Melnychuk, Michael C. (Journal article; Peer reviewed, 2022)
      Small pelagic fishes are used for human consumption, fishmeal and fish oil. They constitute 25% of global fish catch and have been of considerable conservation concern because of their intermediate position in aquatic food ...

    • Receptor for activated C-kinase (RACK1) plays a central role in Ras-mediated signal transduction 

      Lillehaug, Johan; Myklebust, Line Merethe; Raae, Arnt Johan; Bjørndal, Bodil (Conference lecture, 2010-09-24)

    • Reciprocal cross infection of sticklebacks with the diphyllobothriidean cestode Schistocephalus solidus reveals consistent population differences in parasite growth and host resistance 

      Kalbe, Martin; Eizaguirre, Christophe; Scharsack, Jörn P; Jakobsen, Per J (Peer reviewed; Journal article, 2016-03-08)
      Background In host-parasite evolutionary arms races, parasites are generally expected to adapt more rapidly, due to their large population sizes and short generation times. There exist systems, though, where parasites ...

    • Reconstructed 3D models of digestive organs of developing Atlantic cod (Gadus morhua) larvae 

      Kamisaka, Yuko; Rønnestad, Ivar (Peer reviewed; Journal article, 2010)
      Six 3D models of the digestive system during ontogeny were reconstructed from histological sections of Atlantic cod larvae. The 3D models clearly visualize the following features: folding of the gut rotation; subdivision ...

    • Reconstructed 3D-models of the digestive organs of ballan wrasse (Labrus bergylta) during ontogeny 

      Norland, Sissel (Master thesis, 2017-10)
      This study describe the ontogeny of the digestive tract and it’s associated glands of ballan wrasse at six reference stages from yolk sac larva (Stage 1; 4 DPH) until juvenile phase (Stage 6; 102 DPH). Reconstructed 3D-models ...

    • 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 (Journal article; Peer reviewed, 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 ...

    • Recovery and resilience of tropical forests after disturbance 

      Cole, Lydia E.S.; Bhagwat, Shonil A.; Willis, Katherine Jane (Peer reviewed; Journal article, 2014-05-20)
      The time taken for forested tropical ecosystems to re-establish post-disturbance is of widespread interest. Yet to date there has been no comparative study across tropical biomes to determine rates of forest re-growth, and ...

    • Recreational fishing for Nephrops in Hordaland, Norway - catches and potential mercury intake 

      Djønne, Christine (Master thesis, 2018-06-26)
      Few studies provide information about recreational fishing in Norway. As recreational fishing often occurs in areas close to high-density surroundings, possibly affected by environmental pollutants, it is important to ...

    • Recruitment processes in West Greenland waters : with special focus on Greenland halibut (Reinhardtius hippoglossoides, W.) 

      Stenberg, Claus (Doctoral thesis, 2007-10-19)
      The topic of this thesis is recruitment processes in Greenland Halibut (Reinhardtius hippoglossoides) in West Greenland waters. The focal point is Greenland halibut’s early life history from oocytes in the female ovary - ...

    • 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 (Peer reviewed; Journal article, 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 ...

    • Red List updates and the robustness of sites selected for conservation of red-listed species 

      Gjerde, Ivar; Grytnes, John-Arvid; Heegaard, Einar; Sætersdal, Magne; Tingstad, Lise (Peer reviewed; Journal article, 2018-10-11)
      The long-term success of sites selected for species conservation depends on the persistence of target species. Red List species or threatened species lists are frequently defined as target species, but when Red Lists are ...

    • A red tide in the pack ice of the Arctic Ocean 

      Olsen, Lasse Mork; Duarte, Pedro; Peralta-Ferriz, Cecilia; Kauko, Hanna Maria; Johansson, Malin; Peeken, Ilka; Różańska-Pluta, Magdalena; Tatarek, Agnieszka; Wiktor, Jozef; Fernández-Méndez, Mar; Wagner, Penelope Mae; Pavlov, Alexey K.; Hop, Haakon; Assmy, Phillipp (Peer reviewed; Journal article, 2019-07-02)
      n the Arctic Ocean ice algae constitute a key ecosystem component and the ice algal spring bloom a critical event in the annual production cycle. The bulk of ice algal biomass is usually found in the bottom few cm of the ...

    • Redescription of Protoopalina pingi Nie, 1935 inhabiting the recta of Hylarana guentheri and Pelophylax nigromaculatus in China 

      Li, Weidong; Wang, Chong; Huang, Feng; Li, Ming; Nilsen, Frank; Liu, Huiyu; Xu, Jianlong (Peer reviewed; Journal article, 2014-09-12)
      A redescription of Protoopalina pingi Nie, 1935 is presented in this paper to complete Nie’s description at both light and scanning electron microscope levels. These organisms were collected from the recta of the frogs ...

    • Redox control of protein degradation 

      Pajares, Marta; Jiménez-Moreno, Natalia; Dias, Irundika H.K.; Debelec, Bilge; Vucetic, Milica; Fladmark, Kari Espolin; Basaga, Huveyda; Ribaric, Samo; Milisav, Irina; Cuadrado, Antonio (Peer reviewed; Journal article, 2015-12)
      Intracellular proteolysis is critical to maintain timely degradation of altered proteins including oxidized proteins. This review attempts to summarize the most relevant findings about oxidant protein modification, as well ...

    • Redox regulation in Atlantic cod (Gadus morhua) embryos developing under normal and heat-stressed conditions 

      Skjærven, Kaja Helvik; Penglase, Samuel; Olsvik, Pål Asgeir; Hamre, Kristin (Peer reviewed; Journal article, 2013-04)
      With regard to predicted oceanic warming, we studied the effects of heat stress on the redox system during embryonic development of Atlantic cod (Gadus morhua), with emphasis on the glutathione balance, activities of key ...

    • Reduced physiological plasticity in a fish adapted to stable temperatures 

      Morgan, Rachael Louise; Andreassen, Anna H.; Åsheim, Eirik Ryvoll; Finnøen, Mette Helene; Dresler, Gunnar; Brembu, Tore; Loh, Adrian; Miest, Joanna J.; Jutfelt, Fredrik (Journal article; Peer reviewed, 2022)
      Plasticity can allow organisms to maintain consistent performance across a wide range of environmental conditions. However, it remains largely unknown how costly plasticity is and whether a trade-off exists between plasticity ...

    • Reducing Wooden Structure and Wildland-Urban Interface Fire Disaster Risk through Dynamic Risk Assessment and Management 

      Log, Torgrim; Vandvik, Vigdis; Velle, Liv Guri; Log, Maria-Monika Metallinou (Journal article; Peer reviewed, 2020-03-18)
      In recent years, severe and deadly wildland-urban interface (WUI) fires have resulted in an increased focus on this particular risk to humans and property, especially in Canada, USA, Australia, and countries in the ...

    • Refinement of a radioreceptor binding assay for nicotinic acid adenine dinucleotide phosphate 

      Lewis, Alexamder M.; Masgrau, Roser; Vasudevan, Sridhar R.; Yarnasaki, Michiko; O'Neill, John S.; Garnham, Clive; James, Kristin; Macdonald, Andrew; Ziegler, Mathias; Galione, Antony; Churchill, Grant C. (Peer reviewed; Journal article, 2007-12-01)
      The measurement of changes in nicotinic acid adenine dinucleotide phosphate (NAADP) levels in cells has been, and remains, key to the investigation of the functions of NAADP as a Ca2+-releasing second messenger. Here we ...

    • 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 ...