Browsing Faculty of Mathematics and Natural Sciences by Title

Now showing items 2063-2082 of 9927

    • Distribution of marine, benthic, shell bearing gastropods along the Norwegian coast 

      Høisæter, Tore (Peer reviewed; Journal article, 2009)
      Based on literature data and my extensive material from along the coast, the distribution of shell bearing marine, benthic gastropods known from Norwegian waters, is outlined. The geographic area covered goes down to c. ...

    • Distribution of mesopelagic scattering layer (MSL) in relation to the physical environment in the Norwegian Sea 

      Norheim, Eirik (Master thesis, 2014-06-02)
      Mesopelagic fish are considered a major group of fishes in the global oceans and are typically observed in the water as acoustic scattering layers. Their biomass has recently been suggested to be severely underestimated, ...

    • The distribution of rivers to terrestrial sinks: Implications for sediment routing systems 

      Burr Nyberg, Bjørn; Gawthorpe, Rob; Helland-Hansen, William (Peer reviewed; Journal article, 2018-09)
      Empirical observations used to constrain controls on large global modern river systems typically use catchment delineations depicting drainage patterns of rivers to oceans. A key component in the spatial and temporal ...

    • The distribution of Skagerrak coastal cod (Gadus morhua) in relation to oxygen depletion, temperature and salinity, studied by acoustic telemetry in the Tvedestrand fjord in south-eastern Norway 

      Halvorsen, Maren Duus (Master thesis, 2013-06-02)
      Decreased oxygen levels in coastal waters due to human activities are receiving increased attention as a potential threat to marine biodiversity and harvestable resources. Hydrographic measurements and hydroacoustic single ...

    • Distribution of thermochemical output and associated ecosystems at the Loki’s Castle hydrothermal field 

      Rikter-Svendsen, Rasmus (Master thesis, 2020-12-04)
      Loki’s Castle is a hydrothermal vent field situated on the ultra-slow Arctic mid-Ocean ridges, at the boundary of the Mohns- and Knipovich segments (73◦30’N, 08◦E), and consists of two sulfide mounds and associated black ...

    • Diurnal Circulation of the Bolivan Altiplano. Part I: Observations 

      Egger, Joseph; Blacutt, Luis; Ghezzi, Flavio; Heinrich, Richard; Kolb, Philip; Lämmlein, Stephan; Leeb, Martin; Mayer, Stephanie; Palenque, Eduardo; Reuder, Joachim; Schäper, Wolfgang; Schween, Jan; Torrez, Rene; Zaratti, Francesco (Journal article, 2005-04)
      In July and August 2003 a field campaign was conducted to explore the diurnal circulation of the Bolivian Altiplano. Vertical soundings by remote-controlled aircraft yielded profiles of temperature, pressure, and humidity ...

    • Diurnal gait fluctuations in single- and dual- task conditions 

      Bessot, Nicolas; Polyte, Raphaël; Quesney, Marius; Bulla, Jan; Gauthier, Antoine (Journal article; Peer reviewed, 2020)
      Gait is one of the most basic movements, and walking activity accomplished in dual task conditions realistically represents daily life mobility. Much is known about diurnal variations of gait components such as muscle ...

    • Diurnal temperature range as a key predictor of plants’ elevation ranges globally 

      Gallou, Arnaud; Jump, Alistair S.; Lynn, Joshua; Field, Richard; Irl, Severin D. H.; Steinbauer, Manuel; Beierkuhnlein, Carl; Chen, Jan-Chang; Chou, Chang-Hung; Hemp, Andreas; Kidane, Yohannes; König, Christian; Kreft, Holger; Naqinezhad, Alireza; Nowak, Arkadiusz; Nuppenau, Jan-Niklas; Trigas, Panayiotis; Price, Jonathan P.; Roland, Carl A.; Schweiger, Andreas H.; Weigelt, Patrick; Flantua, Suzette; Grytnes, John Arvid (Journal article; Peer reviewed, 2023)
      A prominent hypothesis in ecology is that larger species ranges are found in more variable climates because species develop broader environmental tolerances, predicting a positive range size-temperature variability ...

    • Dive to survive: effects of capture depth on barotrauma and post-release survival of Atlantic cod (Gadus morhua) in recreational fisheries 

      Ferter, Keno; Weltersbach, Marc Simon; Humborstad, Odd Børre; Fjelldal, Per Gunnar; Sambraus, Florian; Strehlow, Harry Vincent; Vølstad, Jon Helge (Peer reviewed; Journal article, 2015-06-04)
      Atlantic cod (Gadus morhua) caught in recreational fisheries are commonly released, often with barotrauma after rapid decompression. Mouth-hooked, non-bleeding cod kept in a floating net pen showed mortalities ≥40% when ...

    • Diverse Collections in Matroids and Graphs 

      Fomin, Fedor; Golovach, Petr; Panolan, Fahad; Philip, Geevarghese; Saurabh, Saket (Journal article; Peer reviewed, 2021)
      We investigate the parameterized complexity of finding diverse sets of solutions to three fundamental combinatorial problems, two from the theory of matroids and the third from graph theory. The input to the Weighted Diverse ...

    • Diverse collections in matroids and graphs 

      Fomin, Fedor; Golovach, Petr; Panolan, Fahad; Philip, Geevarghese; Saurabh, Saket (Journal article; Peer reviewed, 2023)
      We investigate the parameterized complexity of finding diverse sets of solutions to three fundamental combinatorial problems. The input to the Weighted Diverse Bases problem consists of a matroid M, a weight function ω : ...

    • Diverse Pairs of Matchings 

      Fomin, Fedor; Golovach, Petr; Jaffke, Lars; Philip, Geevarghese; Sagunov, Danil (Journal article; Peer reviewed, 2020)
      We initiate the study of the Diverse Pair of (Maximum/ Perfect) Matchings problems which given a graph G and an integer k, ask whether G has two (maximum/perfect) matchings whose symmetric difference is at least k. Diverse ...

    • Diversification in evolutionary arenas—Assessment and synthesis 

      Nürk, Nicolai; Linder, H. Peter; Onstein, Renske E; Larcombe, Matthew J; Hughes, Colin E; Piñeiro Fernández, Laura; Schlüter, Philipp M; Valente, Luis; Beierkuhnlein, Carl; Cutts, Vanessa; Donoghue, Michael J; Edwards, Erika J; Field, Richard; Flantua, Suzette; Higgins, Steven I; Jentsch, Anke; Liede‐Schumann, Sigrid; Pirie, Michael David (Journal article; Peer reviewed, 2020)
      Understanding how and why rates of evolutionary diversification vary is a key issue in evolutionary biology, ecology, and biogeography. Evolutionary rates are the net result of interacting processes summarized under concepts ...

    • Diversified Farming Systems: Impacts and Adaptive Responses to the COVID-19 Pandemic in the United States, Norway and China 

      Måren, Inger Elisabeth; Wiig, Heidi; McNeal, Kathryn; Wang, Sally; Zu, Sebrina; Cao, Ren; Fürst, Kathinka; Marsh, Robin (Journal article; Peer reviewed, 2022)
      The COVID-19 pandemic fully exposed the vulnerability of the global agri-food system to shocks and stresses, highlighting the need for transformation and action to make it more resilient and inclusive. This paper offers a ...

    • Diversity and metabolic energy in bacteria 

      Allen, Ben; Gonzalez-Cabaleiro, Rebeca; Ofiteru, Irina Dana; Øvreås, Lise; Sloan, William T.; Swan, Donna; Curtis, Thomas (Journal article; Peer reviewed, 2023)
      Why are some groups of bacteria more diverse than others? We hypothesize that the metabolic energy available to a bacterial functional group (a biogeochemical group or ‘guild’) has a role in such a group’s taxonomic ...

    • Diversity of dsDNA marine viral groups during winter in the Arctic Ocean north of Svalbard 

      Olesin, Emily Maria (Master thesis, 2015-10-22)
      Extreme changes in light and cold water temperatures throughout the annual cycle in the Arctic Ocean create a unique habitat that selects for particular microorganisms - including marine viruses. This study investigated ...

    • Diversity of solutions: An exploration through the lens of fixed-parameter tractability theory 

      Baste, Julien; Fellows, Michael Ralph; Jaffke, Lars; Masařík, Tomáš; Oliveira, Mateus De Oliveira; Philip, Geevarghese; Rosamond, Frances (Journal article; Peer reviewed, 2022)
      When modeling an application of practical relevance as an instance of a combinatorial problem X, we are often interested not merely in finding one optimal solution for that instance, but in finding a sufficiently diverse ...

    • Diversity, distribution and phylogenetic affinities of deep-sea lithistids (Porifera, Heteroscleromorpha) of the Azores archipelago 

      Xavier, Joana; Rees, David John; Pereira, Raquel; Colaço, Ana; Pham, Christopher K.; Carvalho, Francisca C. (Journal article; Peer reviewed, 2021-05-28)
      Lithistid sponges are globally distributed in temperate and sub-tropical areas, constituting an important component of deep-sea benthic communities where they form structurally complex and vulnerable marine ecosystems ...

    • Diversity, stratification and in situ metabolism of anaerobic methanotrophic archaea in Nyegga cold seeps 

      Roalkvam, Irene (Doctoral thesis, 2012-06-08)
      Anaerobic methanotrophic Archaea (ANME) have considerable importance in a global environmental context as they are considered the major biological sink for methane due to their ubiquitous distribution in anaerobic ...

    • Divided differences and ideals generated by symmetric polynomials 

      Lascoux, A.; Pragacz, P. (Department of Pure Mathematics report no. 59, Research report, 1991-04)