Blar i Department of Biological Sciences på tittel
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Distribution of marine, benthic, shell bearing gastropods along the Norwegian coast
(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
(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 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
(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 ... -
Diurnal temperature range as a key predictor of plants’ elevation ranges globally
(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
(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 ... -
Diversification in evolutionary arenas—Assessment and synthesis
(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
(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
(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
(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, distribution and phylogenetic affinities of deep-sea lithistids (Porifera, Heteroscleromorpha) of the Azores archipelago
(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, habitat endemicity and trophic ecology of the fauna of Loki’s Castle vent field on the Arctic Mid-Ocean Ridge
(Journal article; Peer reviewed, 2024)Loki’s Castle Vent Field (LCVF, 2300 m) was discovered in 2008 and represents the first black-smoker vent field discovered on the Arctic Mid-Ocean Ridge (AMOR). However, a comprehensive faunal inventory of the LCVF has not ... -
Diversity, stratification and in situ metabolism of anaerobic methanotrophic archaea in Nyegga cold seeps
(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 ... -
DNA and scale reading to identify repeat spawning in Atlantic salmon: Unique insights into patterns of iteroparity
(Journal article; Peer reviewed, 2023)Iteroparity represents an important but often overlooked component of life history in anadromous Atlantic salmon. Here, we combined individual DNA profiling and scale reading to identify repeat spawners among ~8000 adult ... -
A DNA barcode survey of marine macroalgae from Bergen (Norway)
(Peer reviewed; Journal article, 2019)Safeguarding the services provided by marine forests inherently depends on an accurate understanding of macroalgal species diversity. Here, we provide the first DNA barcode survey of marine macroalgae from Norway, with a ... -
DNA-analysis to monitor fisheries and aquaculture: Too costly?
(Peer reviewed; Journal article, 2019-03)Evidence from DNA‐analysis is commonplace in human criminal investigations, and while it is increasingly being used in wildlife crime, to date, its application to control and enforcement activities in fisheries and aquaculture ... -
Do ampharetids take sedimented steps between vents and seeps? Phylogeny and habitat-use of Ampharetidae (Annelida, Terebelliformia) in chemosynthesis-based ecosystems
(Peer reviewed; Journal article, 2017-10-31)Background: A range of higher animal taxa are shared across various chemosynthesis-based ecosystems (CBEs), which demonstrates the evolutionary link between these habitats, but on a global scale the number of species ... -
Do ectomycorrhizal exploration types reflect mycelial foraging strategies?
(Journal article; Peer reviewed, 2022)Ectomycorrhizal exploration types are commonly assumed to denote spatial foraging patterns and resource-related niches of extraradical mycelia. However, empirical evidence of the consistency of foraging strategies within ... -
Documentation of growth and insulin-like growth factor I in Atlantic salmon (Salmo salar) post-smolts reared in large scale semi-closed and open systems
(Master thesis, 2017-06-27)Understanding the variation of growth performance in different large scale production scenarios is of great importance to the aquaculture industry to develop efficient rearing procedures for cultured fish. This study ... -
Does density influence relative growth performance of farm, wild and F1 hybrid Atlantic salmon in semi-natural and hatchery common garden conditions?
(Peer reviewed; Journal article, 2016-07)The conditions encountered by Atlantic salmon, Salmo salar L., in aquaculture are markedly different from the natural environment. Typically, farmed salmon experience much higher densities than wild individuals, and may ... -
Does pollen-assemblage richness reflect floristic richness? A review of recent developments and future challenges
(Peer reviewed; Journal article, 2016-05)Current interest and debate on pollen-assemblage richness as a proxy for past plant richness have prompted us to review recent developments in assessing whether modern pollen-assemblage richness reflects contemporary ...