Now showing items 243-262 of 453

  • Large mesopelagic fishes biomass and trophic efficiency in the open ocean 

    Irigoien, Xabier; Klevjer, Thor A.; Røstad, Anders; Martinez, U.; Boyra, G.; Acuna, J. L.; Bode, A.; Echevarria, F.; Gonzalez-Gordillo, J. I.; Hernández-León, Santiago; Augsti, S.; Aksnes, Dag Lorents; Duarte, C. M.; Kaartvedt, Stein (Nature Publishing Group, 2014-02-07)
    With a current estimate of ~1,000 million tons, mesopelagic fishes likely dominate the world total fishes biomass. However, recent acoustic observations show that mesopelagic fishes biomass could be significantly larger ...
    Journal article
  • Last-century vegetational changes in northern Europe. Characterisation, causes, and consequences 

    Kapfer, Jutta (The University of Bergen, 2011-11-04)
    In the face of recent changes in environmental conditions and climate, longterm studies provide important insights into patterns and processes of vegetational change. In northern Europe, however, long-term studies are ...
    Doctoral thesis
  • Length Related Diurnal Vertical Migration of Cod (Gadus morhua L.), Haddock (Melanogrammus aeglefinus L.) and Redfish (Sebastes spp.) in the Barents Sea 

    Einarsson, Haraldur Arnar (The University of Bergen, 2001)
    Vertical fish migrations can increase variability in bottom survey data, especially if unknown diurnal length-frequency distribution is different between layers. Surveys, using echo sounder technique to estimate demersal ...
    Master thesis
  • Life after fire: smoke and ash as germination cues in ericads, herbs and graminoids of northern heathlands 

    Bargmann, Tessa; Måren, Inger Elisabeth; Vandvik, Vigdis (Wiley, 2014-05-02)
    Question: What is the impact of the fire cues smoke and ash on seed germination of important functional groups in the heathland system, namely ericads, herbs and graminoids? We predict that if germination from heathland ...
    Journal article
  • Life after fire: the impact of fire on species composition and diversity in coastal heathlands 

    Bargmann, Tessa (The University of Bergen, 2015-09-11)
    Fire prone coastal heathlands are widespread, and range from naturally fire prone Mediterranean-type heathlands, to the anthropogenic heathlands of north-west Europe. Regardless of its source, fire is an important disturbance ...
    Doctoral thesis
  • Life history adaptations to seasonality 

    Varpe, Øystein Heggernes (The University of Bergen, 2007-02-16)
    The thesis contains studies of animal life histories at high latitudes. Several topics are covered; from ecosystem consequences of life histories to tests of specific behavioural predictions put forward based on life ...
    Doctoral thesis
  • Life-history implications of the allometric scaling of growth 

    Boukal, David S.; Dieckmann, Ulf; Enberg, Katja; Heino, Mikko Petteri; Jørgensen, Christian (Elsevier, 2014-10-21)
    Several phenomenological descriptions, such as the von Bertalanffy growth model, have been widely used to describe size-at-age and individual growth across a diverse range of organisms. However, for modelling life histories, ...
    Journal article
  • Lifespan extension in a semelparous chordate occurs via developmental growth arrest just prior to meiotic entry 

    Subramaniam, Gunasekaran; Campsteijn, Coen; Thompson, Eric (PLoS, 2014-04-02)
    It is proposed that the ageing process is linked to signaling from the germline such that the rate of ageing can be adjusted to the state of the reproductive system, allowing these two processes to co-evolve. Mechanistic ...
    Journal article
  • Limited male incubation ability and the evolution of egg size in shorebirds 

    Lislevand, Terje; Thomas, Gavin H. (The Royal Society, 2006-06-22)
    In bird species where males incubate but are smaller than females, egg size may be constrained by male body size, and hence ability to incubate the eggs. Using data from 71 such shorebird species, we show that egg size ...
    Journal articlePeer reviewed
  • The lineage-specific evolution of aquaporin gene clusters facilitated tetrapod terrestrial adaptation 

    Finn, Roderick Nigel; Chauvigné, Francois; Hlidberg, Jón Baldur; Cutler, Christopher P.; Cerdà, Joan (Public Library of Science, 2014-11-26)
    A major physiological barrier for aquatic organisms adapting to terrestrial life is dessication in the aerial environment. This barrier was nevertheless overcome by the Devonian ancestors of extant Tetrapoda, but the origin ...
    Journal article
  • Long-term dynamics of wadi trees in a hyper-arid cultural landscape 

    Andersen, Gidske L. (The University of Bergen, 2007-03-09)
    This study focuses on the long-term dynamics of wadi (dry river valley) trees, in particular Acacia tortilis (Forssk.) Hayne, in the hyper-arid Eastern Desert of Egypt. The project was motivated by the importance of ...
    Doctoral thesis
  • Long-term effects of environmentally relevant doses of 2,2’,4,4’,5,5’ hexachlorobiphenyl (PCB153) on neurobehavioural development, health and spontaneous behaviour in maternally exposed mice 

    Haave, Marte; Bernhard, Annette; Jellestad, Finn K.; Heegaard, Einar; Brattelid, Trond; Lundebye, Anne-Katrine (BioMed Central, 2011-01-13)
    Background: Polychlorinated biphenyls (PCBs) are widespread in the environment, human food and breast milk. Seafood is known to contain nutrients beneficial for the normal development and function of the brain, but ...
    Peer reviewedJournal article
  • Longevity and growth of Acacia tortilis; insights from 14C content and anatomy of wood 

    Andersen, Gidske L.; Krzywinski, Knut (BioMed Central, 2007-06-15)
    Background: Acacia tortilis is a keystone species across arid ecosystems in Africa and the Middle East. Yet, its life-history, longevity and growth are poorly known, and consequently ongoing changes in tree populations ...
    Journal articlePeer reviewed
  • Looking forward through the past: identification of 50 priority research questions in palaeoecology 

    Seddon, Alistair; Mackay, Anson W.; Baker, Ambroise G.; Birks, Harry John Betteley; Breman, Elinor; Buck, C. E.; Ellis, Erle C.; Froyd, Cynthia A.; Gill, Jacquelyn L.; Gillson, Lindsey; Johnson, Edward A.; Jones, Vivienne J.; Juggins, Stephen; Macias-Fauria, Marc; Mills, Keely; Morris, Jesse L.; Nogués-Bravo, David; Punyasena, Surangi W.; Roland, Thomas P.; Tanentzap, Andrew; Willis, Katherine Jane; Aberhan, Martin; van Asperen, Eline N.; Austin, William E. N.; Battarbee, Richard W.; Bhagwat, Shonil; Belanger, Christina L.; Bennett, Keith D.; Birks, Hilary H.; Ramsey, Christopher Bronk; Brooks, Stephen J.; de Bruyn, Mark; Butler, Paul G.; Chambers, F. M.; Clarke, Stewart J.; Davies, Althea L.; Dearing, John A.; Ezard, Thomas H. G.; Feurdean, Angelica; Flower, Roger J.; Gell, Peter; Hausmann, Sonja; Hogan, Erika J.; Hopkins, Melanie J.; Jeffers, Elizabeth S.; Korhola, Atte; Marchant, Robert; Kiefer, Thorsten; Lamentowicz, Mariusz; Larocque-Tobler, Isabelle; López-Merino, Lourdes; Liow, Lee Hsiang; McGowan, Suzanne; Miller, Joshua H.; Montoya, Encarni; Morton, Oliver; Nogué, Sandra; Onoufriou, Chloe; Boush, Lisa P.; Rodriguez-Sanchez, F; Rose, Neil L.; Sayer, Carl D.; Shaw, Helen E.; Payne, Richard; Simpson, Gavin; Sohar, Kadri; Whitehouse, Nicki J.; Williams, John W.; Witkowski, Andrzej (Wiley, 2014)
    Journal article
  • Lukket merdsystem - AquaDomen: Effekt på smittedynamikk 

    Tolås, Ida Vilinn (The University of Bergen, 2012-06-04)
    Oppdrettsnæringen har blitt kritisert for å ha en negativ innvirkning på omliggende miljø, der smitteoverføring av ulike agens til ville laksepopulasjoner er et stort problem. Det er også reist bekymring ved den genetiske ...
    Master thesis
  • Macrozooplankton as feed source for farmed fish - growth, product quality and safety 

    Suontama, Jorma (The University of BergenInstitute of Marine Research, 2006-12-14)
    Doctoral thesis
  • Male reproductive biology of European hake Merluccius merluccius 

    Groison, Anne-Laure (The University of Bergen, 2010-05-14)
    The reproductive biology of European hake (Merluccius merluccius) has been studied extensively in the field, but mainly focusing on fecundity regulation in females and its implications for the fishery. The European hake ...
    Doctoral thesis
  • Management-driven evolution in a domesticated ecosystem 

    Vandvik, Vigdis; Töpper, Joachim Paul; Cook, Zoë; Daws, Matthew I.; Heegaard, Einar; Måren, Inger Elisabeth; Velle, Liv Guri (Royal Society, 2014-02-12)
    Millennia of human land-use have resulted in the widespread occurrence of what have been coined ‘domesticated ecosystems’. The anthropogenic imprints on diversity, composition, structure and functioning of such systems ...
    Journal article
  • Mangrove forest extent and status along the Eritrean Red Sea coast 

    Hailemichael, Mussie Tesfayesus (The University of Bergen, 2015-10-08)
    A mangrove forest species and spatial extent study has been conducted in Eritrea to see if there has been mangrove forest area change over the last two decades, and to describe mangrove cover status. GIS, field work data ...
    Master thesis
  • Marine mimivirus relatives are probably large algal viruses 

    Monier, Adam; Borggaard Larsen, Jens; Sandaa, Ruth-Anne; Bratbak, Gunnar; Claverie, Jean-Michel; Ogata, Hiroyuki (BioMed Central, 2008-01-23)
    Background Acanthamoeba polyphaga mimivirus is the largest known ds-DNA virus and its 1.2 Mb-genome sequence has revealed many unique features. Mimivirus occupies an independent lineage among eukaryotic viruses and its ...
    Journal articlePeer reviewed