Blar i Department of Biological Sciences på tittel

Viser treff 2185-2204 av 2216

    • What Is Gill Health and What Is Its Role in Marine Finfish Aquaculture in the Face of a Changing Climate? 

      Foyle, Kevin L.; Hess, Sybille; Powell, Mark; Herbert, Neill A. (Journal article; Peer reviewed, 2020)
      It is hard to find a definition of gill health in the literature although there is a lot of information on changes to gill structure as a result of infectious and non-infectious challenge. How these changes relate to overall ...

    • What is natural? The importance of a long-term perspective in biodiversity conservation and management 

      Willis, Katherine Jane; Birks, Harry John Betteley (Peer reviewed; Journal article, 2006)
      Ecosystems change in response to factors such as climate variability, invasions, and wildfires. Most records used to assess such change are based on short-term ecological data or satellite imagery spanning only a few ...

    • What is the observed relationship between species richness and productivity? Comment 

      Whittaker, Robert J.; Heegaard, Einar (Journal article, 2003)

    • What we do in the dark: Prevalence of omnivorous feeding activity in Arctic zooplankton during polar night 

      Kunisch, Erin; Graeve, Martin; Gradinger, Rolf Rudolf; Flores, Hauke; Varpe, Øystein; Bluhm, Bodil (Journal article; Peer reviewed, 2023)
      During the productive polar day, zooplankton and sea-ice amphipods fulfill a critical role in energy transfer from primary producers to higher trophic-level species in Arctic marine ecosystems. Recent polar night studies ...

    • When to reproduce? A new answer to an old question 

      Skorping, Arne; Jensen, Knut Helge; Mennerat, Adele; Högstedt, Göran (Peer reviewed; Journal article, 2016-04)
      We present a life-history model based on the assumptions that juvenile survival follows a negative exponential function and that fecundity gain increases linearly with time to maturity. This model predicts that the optimal ...

    • Whole genome resequencing reveals diagnostic markers for investigating global migration and hybridization between minke whale species 

      Malde, Ketil; Seliussen, Bjørghild Breistein; Sanchez, Maria Quintela; Dahle, Geir; Besnier, Francois; Skaug, Hans J.; Øien, Nils Inge; Solvang, Hiroko Kato; Haug, Tore; Skern-Mauritzen, Rasmus; Kanda, Naohisa; Pastene, Luis A.; Jonassen, Inge; Glover, Kevin (Peer reviewed; Journal article, 2017-01-13)
      Background: In the marine environment, where there are few absolute physical barriers, contemporary contact between previously isolated species can occur across great distances, and in some cases, may be inter-oceanic. An ...

    • “Why is this relevant for me?”: increasing content relevance enhances student motivation and vitality 

      Johansen, Marius Ole; Eliassen, Sigrunn; Jeno, Lucas Matias (Journal article; Peer reviewed, 2023)
      The notion that motivation is imperative for students’ psychological well-being and academic functioning is central to Self-Determination Theory (SDT). According to SDT, different types of motivations can co-occur to a ...

    • Wild and farmed salmon (Salmo salar) as reservoirs for infectious salmon anaemia virus, and the importance of horizontal- and vertical transmission 

      Nylund, Are; Brattespe, Jarle; Plarre, Heidrun; Kambestad, Martha Amalie; Karlsen, Marius (Peer reviewed; Journal article, 2019-04-16)
      The infectious salmon anaemia virus (ISAV) is an important pathogen on farmed salmon in Europe. The virus occurs as low- and high virulent variants where the former seem to be a continuous source of new high virulent ISAV. ...

    • Willow canopies and plant community structure along an alpine environmental gradient 

      Totland, Ørjan; Grytnes, John-Arvid; Heegaard, Einar (Peer reviewed; Journal article, 2005)
      We examined the impact of Salix lapponum canopies on plantcommunity structure in five sites along a climatic gradient in aglacier foreland in alpine south Norway. Species richness is lowerinside canopies compared to outside ...

    • Wind to insect pollination ratios and floral traits in five alpine Salix species 

      Totland, Ørjan; Peeters, Liza (Peer reviewed; Journal article, 1999)
      This study examines the ratio of wind to insect pollination of five alpine-arctic Salix species and possible correlations between plant traits and this ratio. The field work was done in an alpine area in southwest Norway, ...

    • Winning ways with hydrogen sulphide on the Namibian shelf 

      Currie, Bronwen; Utne-Palm, Anne Christine; Salvanes, Anne Gro Vea (Peer reviewed; Journal article, 2018-10-11)
      The shelf sediments off Namibia are some of the most unusual and extreme marine habitats because of their extremely high hydrogen sulphide concentrations. High surface productivity of the northern Benguela upwelling system ...

    • A winter-to-summer transition of bacterial and archaeal communities in Arctic sea ice 

      Thiele, Stefan; Storesund, Julia Endresen; Férnandez-Méndez, Mar; Assmy, Philipp; Øvreås, Lise (Journal article; Peer reviewed, 2022-08-15)
      The Arctic is warming 2–3 times faster than the global average, leading to a decrease in Arctic sea ice extent, thickness, and associated changes in sea ice structure. These changes impact sea ice habitat properties and ...

    • Winters are changing: snow effects on Arctic and alpine tundra ecosystems 

      Rixen, Christian; Høye, Toke Thomas; Macek, Petr; Aerts, Rien; Alatalo, Juha; Andeson, Jill; Arnold, Pieter; Barrio, Isabel C.; Bjerke, Jarle W.; Björkman, Mats P.; Blok, Daan; Blume-werry, Gesche; Boike, Julia; Bokhorst, Stef; Carbognani, Michele; Christiansen, Casper Tai; Convey, Peter; Cooper, Elisabeth J.; Cornelissen, J. Hans C.; Coulson, Stephen; Dorrepaal, Ellen; Elberling, Bo; Elmendorf, Sarah; Elphinstone, Cassandra; Forte, T'ai Gladys Whittingham; Frei, Esther R.; Geange, Sonya Rita; Gehrmann, Friederike; Gibson, Casey; Grogan, Paul; Rechsteiner, Aud Helen Halbritter; Harte, John; Henry, Greg H.R.; Inouye, David W.; Irwin, Rebecca; Jespersen, Gus; Jónsdóttir, Ingibjörg Svala; Jung, Ji Young; Klinges, David H.; Kudo, Gaku; Lämsä, Juho; Lee, Hanna; Lembrechts, Jonas; Lett, Signe; Lynn, Joshua Scott; Mann, Hjalte Mads; Mastepanov, Mikhail; Morse, Jennifer; Myers-Smith, Isla; Olofsson, Johan; Semenchuk, Philipp; Vandvik, Vigdis (Journal article; Peer reviewed, 2022)
      Snow is an important driver of ecosystem processes in cold biomes. Snow accumulation determines ground temperature, light conditions and moisture availability during winter. It also affects the growing season’s start and ...

    • Winter−spring transition in the subarcticAtlantic: microbial response to deep mixingand pre-bloom production 

      Paulsen, Maria Lund; Riisgaard, Karen; Frede, Thingstad; St. John, Mike; Nielsen, Torkel Gissel (Peer reviewed; Journal article, 2015-09-23)
      In temperate, subpolar and polar marine systems, the classical perception is that diatoms initiate the spring bloom and thereby mark the beginning of the productive season. Contrary to this view, we document an active ...

    • Within-patient and global evolutionary dynamics of Klebsiella pneumoniae ST17 

      Hetland, Marit; Hawkey, Jane; Bernhoff, Eva; Bakksjø, Ragna-Johanne; Kaspersen, Håkon; Rettedal, Siren; Sundsfjord, Arnfinn; Holt, Kathryn E.; Löhr, Iren Høyland (Journal article; Peer reviewed, 2023)
      Klebsiella pneumoniae sequence type (ST) 17 is a global problem clone that causes multidrug-resistant (MDR) hospital infections worldwide. In 2008–2009, an outbreak of MDR ST17 occurred at a neonatal intensive care unit ...

    • Within-species variation in the gut microbiome of medaka (Oryzias latipes) is driven by the interaction of light intensity and genetic background 

      Evangelista, Charlotte; Kamenova, Stefaniya; Diaz Pauli, Beatriz; Sandkjenn, Joakim; Vøllestad, Leif Asbjørn; Edeline, Eric; Trosvik, Pål; de Muinck, Eric (Journal article; Peer reviewed, 2023)
      Unravelling evolution-by-environment interactions on the gut microbiome is particularly relevant considering the unprecedented level of human-driven disruption of the ecological and evolutionary trajectories of species. ...

    • Without a pinch of salt: effect of low salinity on eggs and nauplii of the salmon louse (Lepeophtheirus salmonis) 

      Borchel, Andreas; Heggland, Erna Irene; Nilsen, Frank (Journal article; Peer reviewed, 2023)
      The salmon louse is an economically important parasite on Atlantic salmon and poses a major threat to aquaculture. Several treatment methods have lost their effect due to resistance development in the lice. A rather new ...

    • Working and Learning in a Field Excursion 

      Hole, Torstein Nielsen (Peer reviewed; Journal article, 2018-06)
      This study aimed to discern sociocultural processes through which students learn in field excursions. To achieve this aim, short-term ethnographic techniques were employed to examine how undergraduate students work and ...

    • Wound healing in post-smolt Atlantic salmon (Salmo salar L.) 

      Sveen, Lene Rydal; Timmerhaus, Gerrit; Krasnov, Aleksei; Takle, Harald; Handeland, Sigurd; Ytteborg, Elisabeth (Peer reviewed; Journal article, 2019-03-05)
      Skin biopsies (5 mm) taken from behind the dorsal fin on Atlantic salmon post-smolts were followed over a 2 month period. The healing process was dominated by hemostasis, acute inflammation, and epidermal repair the first ...

    • The Würmian Late-Glacial and early-Holocene vegetation and environment of Gourds des Aillères in the Monts du Forez (Massif Central, France) based on pollen and macrofossil evidence 

      Bos, Johanna A.A.; Birks, Hilary H; van der Knaap, Willem O.; van Leeuwen, Jacqueline F.N.; Janssen, C.R. (Journal article; Peer reviewed, 2022)
      Although there is a long history of palaeoecological investigation in the Massif Central, detailed reconstruction of the flora, vegetation, and environment in the Late Pleniglacial, the Würmian (Weichselian) Late-Glacial, ...