Blar i Faculty of Mathematics and Natural Sciences på tittel
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The Micro-Macro Coupling of Mass-Loading in Symmetric Magnetic Reconnection With Cold Ions
(Journal article; Peer reviewed, 2021)We investigate how magnetic reconnection is influenced by an inflow of a dense cold ion population. We compare two 2.5D Particle-In-Cell simulations, one containing the cold population and one without. We find that the ... -
Microalgal Bioprospecting. Spore swelling and germination as a bioassay for the rapid screening of crude algal extracts for antifungal activity
(Master thesis, 2006)Microalgae and cyanobacteria has trough the last couple of decades been increasingly recognized as a valuable source of a variety of bioactive compounds. Many species have been investigated, but these represent mostly ... -
Microbial behavior and hydrogen consumption of Oleidesulfovibrio alaskensis - Implications for subsurface hydrogen storage
(Master thesis, 2023-06-01)To reduce global warming an energy transition going from fossil fuel to renewable energy is required and energy storage opportunities to store surplus electricity are needed. Hydrogen gas (H2) is an energy carrier and can ... -
MICROBIAL COLONIZATION AND COMMUNITY SHIFTS IN A MARINE POST-SMOLT RAS DURING THE FIRST YEAR OF OPERATION AS ANALYZED BY DEEP SEQUENCING
(Master thesis, 2019-12-13)Resirkulering akvakultur systemer (RAS) teknologi for ferskvannsproduksjon av smolt ble for første gang brukt med marint vann for post-smolt påvekst, dvs. påvekst 100-500 gram i tre måneder. Mikrobiell dypsekvensering av ... -
Microbial colonization and community stability in a marine post-smolt RAS inoculated with a commercial starter culture
(Journal article; Peer reviewed, 2021)The performance of a commercial starter culture was investigated in a new marine post-smolt RAS, analyzing the microbial communities of 100 samples collected monthly over a year from biofilter biofilm carriers, tank wall ... -
Microbial communities and processes in ice-covered Arctic waters of the northwestern Fram Strait (75 to 80° N) during the vernal pre-bloom phase
(Peer reviewed; Journal article, 2011-09-20)Marine microbial communities have been little studied in Arctic waters, especially during the winter–spring transition before the development of extensive phytoplankton blooms. This study investigated microbial plankton ... -
Microbial Communities in a Flow-Through Fish Farm for Lumpfish (Cyclopterus lumpus L.) During Healthy Rearing Conditions
(Peer reviewed; Journal article, 2019-07-12)Lumpfish can efficiently remove sea lice from Atlantic salmon in net-pens, and production of lumpfish in closed fish farms is a new, fast developing industry in Norway. However, periodic outbreaks of bacterial diseases in ... -
Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia
(Peer reviewed; Journal article, 2015-04)Soil horizons below 30 cm depth contain about 60% of the organic carbon stored in soils. Although insight into the physical and chemical stabilization of soil organic matter (SOM) and into microbial community composition ... -
Microbial community structure in Arctic lake sediments reflect variations in Holocene climate conditions
(Journal article; Peer reviewed, 2020)The reconstruction of past climate variability using physical and geochemical parameters from lake sedimentary records is a well-established and widely used approach. These geological records are also known to contain large ... -
Microbial Diversity of Terrestrial Geothermal Springs in Armenia and Nagorno-Karabakh: A Review
(Journal article; Peer reviewed, 2021)The microbial diversity of high-altitude geothermal springs has been recently assessed to explore their biotechnological potential. However, little is known regarding the microbiota of similar ecosystems located on the ... -
Microbial dynamics in high latitude ecosystems. Responses to mixing, runoff and seasonal variation a rapidly changing environment
(Doctoral thesis, 2017-11-08)The pronounced warming at high latitude alters a range of physical conditions i.e. the magnitude of runoff, sea-ice extent and strength of stratification and thus affect the biological systems. As microorganisms form the ... -
Microbial inventory of deeply buried oceanic crust from a young ridge flank
(Peer reviewed; Journal article, 2016-05-27)The deep marine biosphere has over the past decades been exposed as an immense habitat for microorganisms with wide-reaching implications for our understanding of life on Earth. Recent advances in knowledge concerning this ... -
Microbial iron reduction and greenhouse gas production in response to organic matter amendment and temperature increase of periglacial sediments, Bolterdalen, Svalbard
(Journal article; Peer reviewed, 2022)Arctic permafrost soils store substantial reserves of organic matter (OM) from which microbial transformation contributes significantly to greenhouse gas emissions of CH4 and CO2. However, many younger sediments exposed ... -
Microbial Nitrogen Cycling in the Marine Deep Biosphere
(Doctoral thesis, 2018-11-22) -
Microbial nitrogen dynamics in organic and mineral soil horizons along a latitudinal transect in western Siberia
(Peer reviewed; Journal article, 2015-05-12)Soil N availability is constrained by the breakdown of N-containing polymers such as proteins to oligopeptides and amino acids that can be taken up by plants and microorganisms. Excess N is released from microbial cells ... -
A Microbial Nitrogen Engine Modulated by Bacteriosyncytia in Hexactinellid Sponges: Ecological Implications for Deep-Sea Communities
(Journal article; Peer reviewed, 2021-03-17)Hexactinellid sponges are common in the deep sea, but their functional integration into those ecosystems remains poorly understood. The phylogenetically related species Schaudinnia rosea and Vazella pourtalesii were herein ... -
Microbial winter and spring bloom dynamics in a high Arctic fjord
(Master thesis, 2014-06-02)Knowledge of the seasonal dynamics within the Arctic marine microbial network is scarce, particularly during the polar night period. The abundances of different microbial groups in Adventfjorden, Svalbard were investigated ... -
Microbiological aspects of fish handling and processing in the Norwegian pelagic sector
(Doctoral thesis, 2015-03-17)Most global marine fish resources seem to have reached their limit of sustainable exploitation, whereas the demand for high quality fish products is still increasing. The fish sector needs to comply with the growing market ... -
Microbiological assessment along the fish production chain of the Norwegian pelagic fisheries sector - Results from a spot sampling programme
(Peer reviewed; Journal article, 2015-10)Microbes play an important role in the degradation of fish products, thus better knowledge of the microbiological conditions throughout the fish production chain may help to optimise product quality and resource utilisation. ... -
The Microbiome and Occurrence of Methanotrophy in Carnivorous Sponges
(Peer reviewed; Journal article, 2016-11-09)As shown by recent studies, filter-feeding sponges are known to host a wide variety of microorganisms. However, the microbial community of the non-filtering carnivorous sponges (Porifera, Cladorhizidae) has been the subject ...