Blar i Department of Biological Sciences på tittel

Viser treff 1950-1969 av 2235

    • Spatial Distribution of Seatrout Spawning and the Effects on Juvenile Abundance in River Teigdalselva, Western-Norway 

      Normann, Eirik Straume (Master thesis, 2011-06-01)
      The spatial distribution of seatrout spawning-grounds, microhabitat features and the resulting juvenile distribution were observed in a typical Western-Norwegian river. A total of 1870 squares within 187 cross-transects ...

    • Spatial dynamics of the bearded goby and its key fish predators off Namibia vary with climate and oxygen availability 

      Salvanes, Anne Gro Vea; Bartholomae, Chris H.; Yemane, Dawit; Gibbons, Mark J.; Kainge, Paul; Krakstad, Jens-Otto; Roault, Mathieu; Staby, Arved; Sundby, Svein (Peer reviewed; Journal article, 2015-03)
      Hypoxia [O2 < 2.0 mL L−1 (87 μmol kg−1)] and severely hypoxic water masses [O2 < 0.5 mL L−1 (21.8 μmol kg−1)] are increasing in coastal marine ecosystems due to eutrophication and warming. Here, we investigate the response ...

    • Spatial patterns of arctic sponge ground fauna and demersal fish are detectable in autonomous underwater vehicle (AUV) imagery 

      Meyer, Heidi Kristina; Roberts, Emyr Martyn; Rapp, Hans Tore; Davies, Andrew J (Peer reviewed; Journal article, 2019-10-10)
      Deep-sea sponge grounds are important habitats that provide several ecosystem services, yet relatively little is known about their distribution and ecology. While most surveys have focused on the broad-scale distribution ...

    • Spatial Scales of Bacterial Diversity in Cold-Water Coral Reef Ecosystems 

      Schöttner, Sandra; Wild, Christian; Hoffmann, Friederike; Boetius, Antje; Ramette, Alban (Peer reviewed; Journal article, 2012-03-05)
      Background: Cold-water coral reef ecosystems are recognized as biodiversity hotspots in the deep sea, but insights into their associated bacterial communities are still limited. Deciphering principle patterns of bacterial ...

    • Spatial transcription of CYP1A in fish liver 

      Olsvik, Pål A.; Lie, Kai K.; Sæle, Øystein; Sanden, Monica (Peer reviewed; Journal article, 2007-12-05)
      Background: The aim of this work was to study how evenly detoxifying genes are transcribed spatially in liver tissue of fish. Ten Atlantic salmon Salmo salar were intraperitoneally injected with 50 mg/kg of the strong CYP1A ...

    • Spatiotemporal Dynamics of Ammonia-Oxidizing Thaumarchaeota in Distinct Arctic Water Masses 

      Müller, Oliver; Wilson, Bryan; Paulsen, Maria Lund; Rumińska, Agnieszka; Armo, Hilde R.; Bratbak, Gunnar; Øverås, Lise (Peer reviewed; Journal article, 2018-01-23)
      One of the most abundant archaeal groups on Earth is the Thaumarchaeota. They are recognized as major contributors to marine ammonia oxidation, a crucial step in the biogeochemical cycling of nitrogen. Their universal ...

    • Spawning site distribution of a bluefin tuna reduces jellyfish predation on early life stages 

      Ottmann, Daniel; Fiksen, Øyvind; Martín, Melissa; Alemany, Francisco; Prieto, Laura; Álvarez-Berastegui, Diego; Reglero, Patricia (Journal article; Peer reviewed, 2021)
      Bluefin tunas across the world migrate long distances to spawn in particularly warm and oligotrophic areas constrained by oceanographic fronts. The low abundance of predators in these areas increases survival chances of ...

    • Spawning time in adult polar cod (Boreogadus saida) altered by crude oil exposure, independent of food availability 

      Strople, Leah Catherine; Vieweg, Ireen; Yadetie, Fekadu; Odei, Derrick Kwame; Thorsen, Anders; Karlsen, Odd André; Goksøyr, Anders; Sørensen, Lisbet; Sarno, Antonio; Hansen, Bjørn Henrik; Frantzen, marianne; Hansen, Øyvind J; Puvanendran, Velmurugu; Nahrgang, Jasmine (Journal article; Peer reviewed, 2023)
      Fish early life stages are well known for their sensitivity to crude oil exposure. However, the effect of crude oil exposure on adults and their gametes during their spawning period is not well studied. Polar cod, a key ...

    • Spawning, settlement and growth of Ciona intestinalis in Øygarden, Hardangerfjorden and Kvitsøy 

      Laupsa, Marita (Master thesis, 2015-04-24)
      Due to the increasing aquaculture industry, new resources for feed should be assessed. A high protein content in Ciona intestinalis have increased the interest to farm C. intestinalis, and use as a feed resource. In addition, ...

    • Special feature: measuring components of ecological resilience in long-term ecological datasets 

      Seddon, Alistair William Robin (Journal article; Peer reviewed, 2021)
      Ecological resilience has become a focal concept in ecosystem management. Palaeoecological records (i.e. the sub-fossil remains preserved in sediments) are useful archives to address ecological resilience since they can ...

    • Specialization of CDK1 and cyclin B paralog functions in a coenocystic mode of oogenic meiosis 

      Feng, Haiyang; Thompson, Eric (Peer reviewed; Journal article, 2018)
      Oogenesis in the urochordate, Oikopleura dioica, occurs in a large coenocyst in which vitellogenesis precedes oocyte selection in order to adapt oocyte production to nutrient conditions. The animal has expanded Cyclin-Dependant ...

    • Speciation of zinc in fish feed by size exclusion chromatography coupled to inductively coupled plasma mass spectrometry – using fractional factorial design for method optimisation and mild extraction conditions 

      Silva, Marta Sofia; Sele, Veronika; Sloth, Jens Jørgen; Araujo, Pedro; Amlund, Heidi (Peer reviewed; Journal article, 2019-01)
      Zinc (Zn) is an element essential to all living organisms and it has an important role as a cofactor of several enzymes. In fish, Zn deficiency has been associated with impaired growth, cataracts, skeletal abnormalities ...

    • Species composition and richness along microtopographical gradient, Hardangervidda National Park, Southern Norway 

      Bhattarai, Prakash (Master thesis, 2017-08-23)
      Snow, an effective insulator and a mediator of soil microclimate, determines the abundance and plant species richness patterns in the alpine life zone. The aims of this study are: first, to investigate the species composition ...

    • Species Richness Patterns in Space and Time in the Himalayan Area 

      Baniya, Chitra Bahadur (Doctoral thesis, 2010-02-19)
      Aims: The Himalayan Mountains are highly sensitive to current global climate changes and their local impacts. Potentially more sensitive are lichens growing throughout the Himalaya and species living in the alpine zones ...

    • Species separation and population structure of three Gobiidae (Pomatoschistus microps, Pomatoschistus minutus and Pomatoschistus pictus) using otolith shape and fish condition 

      Guillot, Rita (Master thesis, 2012-11-12)
      Population structure and species separation in three species of the genus Pomatoschistus (P. microps, P. minutus and P. pictus) was studied using otolith shape and morphology and fish condition. Using a 1 m-wide beam trawl ...

    • Species–area relationships in continuous vegetation: Evidence from Palaearctic grasslands 

      Dengler, Jürgen; Matthews, Thomas J.; Steinbauer, Manuel J.; Wolfrum, Sebastian; Boch, Steffen; Chiarucci, Alessandro; Conradi, Timo; Dembicz, Iwona; Marcenó, Corrado; García-Mijangos, Itziar; Nowak, Arkadiusz; Storch, David; Ulrich, Werner; Campos, Juan Antonio; Cancellieri, Laura; Carboni, Marta; Ciaschetti, Giampiero; De Frenne, Pieter; Doležal, Jiří; Dolnik, Christian; Essl, Franz; Fantinato, Edy; Filibeck, Goffredo; Grytnes, John-Arvid; Guarino, Riccardo; Güler, Behlül; Janišová, Monika; Klichowska, Ewelina; Kozub, Łukasz; Kuzemko, Anna; Manthey, Michael; Mimet, Anne; Naqinezhad, Alireza; Pedersen, Christian; Peet, Robert K.; Pellissier, Vincent; Pielech, Remigiusz; Potenza, Giovanna; Rosati, Leonardo; Terzi, Massimo; Valkó, Orsolya; Vynokurov, Denys; White, Hannah; Winkler, Manuela; Biurrun, Idoia (Peer reviewed; Journal article, 2019-09-19)
      Aim: Species–area relationships (SARs) are fundamental scaling laws in ecology although their shape is still disputed. At larger areas, power laws best represent SARs. Yet, it remains unclear whether SARs follow other ...

    • Specific metabolites in a Phaeodactylum tricornutum strain Isolated from Western Norwegian fjord water 

      Prestegard, Siv Kristin; Erga, Svein Rune; Steinrücken, Pia; Mjøs, Svein Are; Knutsen, Gjert; Rohloff, Jens (Peer reviewed; Journal article, 2016-12-30)
      We have searched for special characteristics in growth, protein expression, fatty acids and volatile organic compounds (VOCs) in a local Phaeodactylum tricornutum Bohlin strain (Bergen Marine Biobank), by comparing it with ...

    • Specification and differentiation of neural cells in Nematostella vectensis 

      Tournière, Océane (Doctoral thesis, 2020-02-21)
      During embryonic development, early neurogenesis can be divided into several components, such as the origin, proliferation and movement of neural stem cells and progenitor cells, which are regulated by conserved genes and ...

    • Specificity and Versatility of Substrate Binding Sites in Four Catalytic Domains of Human N-Terminal Acetyltransferases 

      Grauffel, Cédric; Abboud, Angèle; Liszczak, Glen; Marmorstein, Ronen; Arnesen, Thomas; Reuter, Nathalie (Peer reviewed; Journal article, 2012-12-28)
      Nt-acetylation is among the most common protein modifications in eukaryotes. Although thought for a long time to protect proteins from degradation, the role of Nt-acetylation is still debated. It is catalyzed by enzymes ...

    • sPlotOpen – An environmentally balanced, open-access, global dataset of vegetation plots 

      Sabatini, Francesco Maria; Lenoir, Jonathan; Hattab, Tarek; Arnst, Elise Aimee; Chytrý, Milan; Dengler, Jürgen; De Ruffray, Patrice; Hennekens, Stephan M.; Jandt, Ute; Jansen, Florian; Jiménez-Alfaro, Borja; Kattge, Jens; Levesley, Aurora; Pillar, Valério D.; Purschke, Oliver; Sandel, Brody; Sultana, Fahmida; Aavik, Tsipe; Aćić, Svetlana; Acosta, Alicia T.R.; Agrillo, Emiliano; Álvarez, Miguel; Apostolova, Iva; Khan, Mohammed A. S. Arfin; Arroyo, Luzmila; Attorre, Fabio; Aubin, Isabelle; Banerjee, Arindam; Bauters, Marijn; Bergeron, Yves; Bergmeier, Erwin; Biurrun, Idoia; Björkman, Anne D.; Bonari, Gianmaria; Bondareva, Viktoria; Brunet, Jörg; Čarni, Andraž; Casella, Laura; Cayuela, Luis; Cerny, Tomas; Chepinoga, Victor; Csiky, János; Ćušterevska, Renata; De Bie, Els; De Gasper, André Luis; De Sanctis, Michele; Dimopoulos, Panayotis; Dolezal, Jiri; Dziuba, Tetiana; El-Sheikh, Mohamed Abd El-Rouf Mousa; Enquist, Brian; Ewald, Jörg; Fazayeli, Farideh; Field, Richard; Finckh, Manfred; Gachet, Sophie; Galán-De-Mera, Antonio; Garbolino, Emmanuel; Gholizadeh, Hamid; Giorgis, Melisa; Golub, Valentin; Alsos, Inger Greve; Grytnes, John Arvid; Guerin, Gregory Richard; Gutiérrez, Alvaro G.; Haider, Sylvia; Hatim, Mohamed Z.; Herault, Bruno; Mendoza, Guillermo Hinojos; Holzel, Norbert; Homeier, Jürgen; Kącki, Zygmunt; Kapfer, Jutta; Karger, Dirk Nikolaus; Kavgaci, Ali; Kearsley, Elizabeth; Bruelheide, Helge (Journal article; Peer reviewed, 2021)
      Motivation Assessing biodiversity status and trends in plant communities is critical for understanding, quantifying and predicting the effects of global change on ecosystems. Vegetation plots record the occurrence or ...