Browsing Institutt for biologi by Title
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Phenylalanine Hydroxylase RNAi Knockdown Negatively Affects Larval Development, Molting and Swimming Performance of Salmon Lice
(Peer reviewed; Journal article, 2020)Phenylalanine hydroxylase (PAH) is a crucial enzyme involved in tyrosine biosynthesis, having roles in neurological and physiological processes. The purpose of PAH has received little attention in crustaceans despite ... -
Phospholipids in Atlantic cod (Gadus morhua L.) larvae rearing: Incorporation of DHA in live feed and larval phospholipids and the metabolic capabilities of larvae for de novo synthesis
(Doctoral thesis at NTNU;2015:257, Doctoral thesis, 2015) -
Phosphorus in Palmaria palmata: Uptake, storage and potential recycling in IMTA
(Master thesis, 2023)I fremtiden kommer tilgangen til fosfor å være i stadig begrenset tilgang, siden den blir hentet ut fra begrensede reserver. Fosfor er avgjørende for produksjon av kunstgjødsel for bruk i landbruk, og er derfor på sikt ... -
Phosphorus limitation in Rhodomonas baltica and the effects as food resource on Calanus finmarchicus reared at elevated temperatures
(Master thesis, 2021)Elevation in water temperature due to the climate change is considered one of the major factors to influence the microalgae and zooplankton community. The copepod genus Calanus is ecologically important as an energy bridge ... -
Photoacclimation mechanismsand light responses in marine micro- and macroalgae
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:74, Doctoral thesis, 2014)Photoacclimation mechanisms and light responses in marine micro- and macroalgae Marine diatoms play a fundamental role in marine ecosystems and on global climate, as they fix more CO2 and release more oxygen than all ... -
Photobioreactor time-series of a simulated bloom of Emiliania huxleyi
(Master thesis, 2009) -
Photoperiodism and overwintering in boreal and sub-Arctic Calanus finmarchicus populations
(Journal article, 2023)ABSTRACT: The copepod Calanus finmarchicus, a key species in the North Atlantic, generally spends the non-productive season by descending into deep waters and entering diapause, a physiological state characterized by reduced ... -
Photophysiological cycles in Arctic krill are entrained by weak midday twilight during the Polar Night
(Peer reviewed; Journal article, 2021)Light plays a fundamental role in the ecology of organisms in nearly all habitats on Earth and is central for processes such as vision and the entrainment of the circadian clock. The poles represent extreme light regimes ... -
Photophysiologically active green, red, and brown macroalgae living in the Arctic Polar Night
(Peer reviewed; Journal article, 2023)Abstract: Arctic macroalgae species have developed different growth strategies to survive extreme seasonal changes in irradiance in polar regions. We compared photophysiological parameters such as the light saturation ... -
Photosynthetic Response to increasing Temperatures - a Comparison between prostrate and erect alpine Shrubs
(Master thesis, 2015)As a response to climate change, shrub biomass has increased in alpine and arctic tundra ecosystems. Substantial shrub encroachment can lead to changes in carbon fluxes, due to a shift in community compositions and functional ... -
Photosynthetic responses as a function of light and temperature: Field and laboratory studies on marine microalgae
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:111, Doctoral thesis, 2007)The aim of my thesis is to elucidate the different pathways of light in the marine environment, from underwater irradiance to the absorption of photons in microalgae. The pathway is followed through light harvesting and ... -
Photosynthetic Responses of maize (Zea mays L.) seedlings to heat and drought stress
(Master thesis, 2017)Like all other plants, maize (Zea mays L.) depends on the environment for growth. It is also an important food source for the continuously increasing human population. However, due to the recent changes in climate, maize ... -
Phototaxis in Calanusfinmarchicus – light sensitivity and the influence of energy reserves and oil exposure
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:376, Doctoral thesis, 2013) -
Phthalate metabolites in harbor porpoises (Phocoena phocoena) from Norwegian coastal waters
(Journal article; Peer reviewed, 2020)The exposure of marine mammals to phthalates has received considerable attention due to the ubiquitous occurrence of these pollutants in the marine environment and their potential adverse health effects. The occurrence of ... -
Phylogenetic analyses suggest centipede venom arsenals were repeatedly stocked by horizontal gene transfer
(Peer reviewed; Journal article, 2021)Venoms have evolved over a hundred times in animals. Venom toxins are thought to evolve mostly by recruitment of endogenous proteins with physiological functions. Here we report phylogenetic analyses of venom proteome-annotated ... -
Phylogenetic analysis of the genus Paratanytarsus (Diptera: Chironomidae)
(Master thesis, 2012)The non-biting midges (Chironomidae) are among of the most successful insects in freshwater systems and often dominate in abundance and species richness. The genus Paratanytarsus contains species from all biogeographic ... -
Phylogenetic Diversity of Arctic Vertebrate Herbivores
(Master thesis, 2017)Understanding spatial diversity patterns, and factors shaping these patterns, is crucial for conservation planning, and is particularly important in areas undergoing severe climatic change. Traditionally, spatial diversity ... -
Phylogeny and Cryptic Diversity of Diopatra (Onuphidae, Annelida) in the East Atlantic
(Journal article; Peer reviewed, 2022)Diopatra Audouin & Milne-Edwards, 1833 is a species rich genus that is common in tropical and subtropical regions. The genus is readily identified by its striking, spiral branchiae, but species identification has historically ... -
Phylogeography of a ‘great speciator’ (Aves: Edolisoma tenuirostre) reveals complex dispersal and diversification dynamics across the Indo-Pacific
(Journal article; Peer reviewed, 2018)Aim: We derive a new phylogenetic framework of the Indo-Pacific avian genus Edolisoma based on a dense taxon sampling and use it in an explicit spatiotemporal framework to understand the history of intraspecific diversification ...