Blar i NTNU Open på forfatter "Nordtug, Trond"
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Acute and physical effects of water-based drilling mud in the marine copepod Calanus finmarchicus
Farkas, Julia; Yvonne Bådsvik, Camilla; Altin, Dag; Nordtug, Trond; Olsen, Anders Johny; Hansen, Bjørn Henrik (Journal article; Peer reviewed, 2017)The aim of this study was to investigate impacts of fine particulate fraction of a commonly used barite-containing drilling mud on the pelagic filter feeding copepod Calanus finmarchicus. The results show that the tested ... -
Atlantic cod (Gadus morhua) embryos are highly sensitive to short-term 3,4-dichloroaniline exposure
Hansen, Bjørn Henrik; Farkas, Julia; Piarulli, Stefania; Vicario, Silvia; Kvæstad, Bjarne; Williamson, David Roddan; Sørensen, Lisbet; Davies, Emlyn John; Nordtug, Trond (Peer reviewed; Journal article, 2021)3,4-dichloroaniline (3,4-DCA) is one of the most widely produced anilines world-wide, used in plastic packaging, fabrics, pharmaceuticals, pesticides, dyes and paints as well as being a degradation product of several ... -
Cellular level response of the bivalve Limecola balthica to seawater acidification due to potential CO2 leakage from a sub-seabed storage site in the southern Baltic Sea: TiTank experiment at representative hydrostatic pressure
Sokołowski, Adam; Świeżak, Justyna; Hallman, Anna; Olsen, Anders Johny; Ziółkowska, Marcelina; Øverjordet, Ida Beathe; Nordtug, Trond; Altin, Dag; Krause, Daniel Franklin; Salaberria, Iurgi; Smolarz, Katarzyna (Journal article; Peer reviewed, 2021)Understanding of biological responses of marine fauna to seawater acidification due to potential CO2 leakage from sub-seabed storage sites has improved recently, providing support to CCS environmental risk assessment. ... -
Climate change mitigation effects: How do potential CO2 leaks from a sub-seabed storage site in the Norwegian Sea affect Astarte sp. bivalves?
Bonnail, Estefanía; Borrero Santiago, Ana Rocío; Nordtug, Trond; Øverjordet, Ida Beathe; Krause, Daniel Franklin; Ardelan, Murat Van (Peer reviewed; Journal article, 2021)Carbon capture and storage (CCS) is one of the most promising mitigation strategies for reducing the emissions of carbon dioxide (CO2) to the atmosphere and may substantially help to decelerate global warming. There is an ... -
Developmental effects in fish embryos exposed to oil dispersions – the impact of crude oil micro-droplets
Hansen, Bjørn Henrik; Salaberria, Iurgi; Read, Kari; Wold, Per-Arvid; Hammer, Karen Marie; Olsen, Anders Johny; Altin, Dag; Øverjordet, Ida Beathe; Nordtug, Trond; Bardal, Tora; Kjørsvik, Elin (Journal article; Peer reviewed, 2019)During accidental crude oil spills and permitted discharges of produced water into the marine environment, a large fraction of naturally occurring oil components will be contained in micron-sized oil droplets. Toxicity is ... -
Do oil droplets and chemical dispersants contribute to uptake of oil compounds and toxicity of crude oil dispersions in cold-water copepods?
Hansen, Bjørn Henrik; Altin, Dag; Nordtug, Trond (Journal article; Peer reviewed, 2023)Accidental crude oil spills to the marine environment cause dispersion of oil into the water column through the actions of breaking waves, a process that can be facilitated using chemical dispersants. Oil dispersions contain ... -
Effects of Exposure Timing on cyp1a Expression, PAH Elimination, and Lipid Utilization in Lumpfish Embryos Exposed to Produced Water
Hansen, Bjørn Henrik; Arukwe, Augustine Ebeku; Knutsen, Hannah Marie; Skarpnord, Kaja Skyrud; Farkas, Julia; Veylit, Lara; Nepstad, Raymond; Khan, Essa Ahsan; Nordtug, Trond; Sørensen, Lisbet (Peer reviewed; Journal article, 2023)Intentional discharges of produced water from oil production platforms to the marine environment contain a complex mixture of toxicants, including polycyclic aromatic hydrocarbons (PAHs). Early life stages of fish are ... -
Effects of marine mine tailing exposure on the development, growth, and lipid accumulation in Calanus finmarchicus
Svendheim, Linn Hjelmeland; Jager, Tjalling; Olsvik, Pål Asgeir; Øverjordet, Ida Beathe; Ciesielski, Tomasz Maciej; Nordtug, Trond; Kristensen, Torstein; Hansen, Bjørn Henrik; Kvæstad, Bjarne; Altin, Dag; Farkas, Julia (Journal article; Peer reviewed, 2021)Marine tailing disposal (MTD) is sometimes practiced as an alternative to traditional mine tailing deposition on land. Environmental challenges connected to MTD include spreading of fine particulate matter in the water ... -
Effects of mine tailing exposure on early life stages of cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)
Farkas, Julia; Nordtug, Trond; Svendheim, Linn Hjelmeland; D Amico, Elettra; Davies, Emlyn John; Ciesielski, Tomasz Maciej; Jensen, Bjørn Munro; Kristensen, Torstein; Olsvik, Pål Asgeir; Hansen, Bjørn Henrik (Peer reviewed; Journal article, 2021)Mining and processing of minerals produce large quantities of tailings as waste. Some countries, including Norway, allow disposal of mine tailings in the sea. In this study we investigated the impacts of tailings from a ... -
Exposure to low environmental copper concentrations does not affect survival and development in Atlantic cod (Gadus morhua) early life stages
Farkas, Julia; Svendheim, Linn Hjelmeland; Jager, Tjalling; Ciesielski, Tomasz Maciej; Nordtug, Trond; Kvæstad, Bjarne; Hansen, Bjørn Henrik; Kristensen, Torstein; Altin, Dag; Olsvik, Pål Asgeir (Peer reviewed; Journal article, 2021)In this study we investigated potential impacts of Cu exposure at low, environmentally relevant, concentrations on early live stages of Atlantic cod (Gadus morhua). Cod embryos and larvae were exposed to 0.5 μg/L (low), ... -
A flow-through imaging system for automated measurement of ichthyoplankton
Williamson, David Roddan; Nordtug, Trond; Leirvik, Frode; Kvæstad, Bjarne; Hansen, Bjørn Henrik; Ludvigsen, Martin; Davies, Emlyn John (Peer reviewed; Journal article, 2022)Microscopic imaging and morphometric measurement of fish embryos and larvae is essential in environmental monitoring of fish populations and to evaluate larvae development in aquaculture. Traditional microscopy methods ... -
The impact of exposure timing on embryo mortality and the partitioning of PAHs when cod eggs are exposed to dispersed and dissolved crude oil
Nordtug, Trond; Olsen, Anders Johny; Wold, Per-Arvid; Salaberria, Iurgi; Øverjordet, Ida Beathe; Altin, Dag; Kjørsvik, Elin; Hansen, Bjørn Henrik (Peer reviewed; Journal article, 2022)During sub-sea oil spills to the marine environment, oil droplets will rise towards the sea surface at a rate determined by their density and diameter as well as the vertical turbulence in the water. Micro-droplets (< 50 ... -
Modelling the dynamics of growth, development and lipid storage in the marine copepod Calanus finmarchicus
Jager, Tjalling; Salaverria-Zabalegui, Iurgi Imanol; Altin, Dag; Nordtug, Trond; Hansen, Bjørn Henrik (Journal article; Peer reviewed, 2017)Mechanistic models are essential tools for interpreting and predicting the consequences of a changing environment and stressors such as pollution on the life histories of marine organisms. Here, we apply the simple and ... -
Ova lipid profiling and egg quality in wild and captive lumpfish, Cyclopterus lumpus (Linnaeus, 1758)
Hansen, Bjørn Henrik; Kjørsvik, Elin; Malzahn, Arne; Sarno, Antonio; Kulild, Ole Martin; Farkas, Julia; Nordtug, Trond; Rye, Rebecca; Kvæstad, Bjarne; Lein, Ingrid; Hagemann, Andreas (Peer reviewed; Journal article, 2022)Lumpfish (Cyclopterus lumpus) serves an important role as cleaner fish for removing salmon lice in salmon aquaculture. For this use, cultivated lumpfish are preferred over wild-caught fish to avoid overexploitation of ... -
Sources, distribution and effects of rare earth elements in the marine environment: Current knowledge and research gaps
Piarulli, Stefania; Hansen, Bjørn Henrik; Ciesielski, Tomasz Maciej; Zocher, Anna-Lena; Malzahn, Arne; Olsvik, Pål Asgeir; Sonne, Christian; Nordtug, Trond; Jenssen, Bjørn Munro; Booth, Andy; Farkas, Julia (Peer reviewed; Journal article, 2021)Rare earth elements and yttrium (REY) are critical elements for a wide range of applications and consumer products. Their growing extraction and use can potentially lead to REY and anthropogenic-REY chemical complexes ... -
SubSea Dispersant lnjection (SSDI)- a "state of the art" and the need for further documentations
Daling, Per Snorre; Brakstad, Odd Gunnar; Brandvik, Per Johan; Davies, Emlyn J.; Grøsvik, Bjørn Einar; Meier, Sonnich; Nepstad, Raymond; Nordtug, Trond; Vikebø, Frode Bendiksen (;2017:00007 A, Research report, 2017)The aim of this pre-project has been to give a "State-of the art" and describe the R&D challenges and documentation needed in order to perform robust NEBA (Net Environmental Benefit Analysis) where SubSea Dispersant Injection ... -
Toxicity and developmental effects of Arctic fuel oil types on early life stages of Atlantic cod (Gadus morhua)
Hansen, Bjørn Henrik; Nordtug, Trond; Farkas, Julia; Khan, Essa Ahsan; Oteri, Erika; Kvæstad, Bjarne; Faksness, Liv-Guri; Daling, Per Snorre; Arukwe, Augustine (Journal article; Peer reviewed, 2021)Due to the heavy fuel oil (HFO) ban in Arctic maritime transport and new legislations restricting the sulphur content of fuel oils, new fuel oil types are continuously developed. However, the potential impacts of these new ... -
Transcriptional profiling of reproductive development, lipid storage and molting throughout the last juvenile stage of the marine copepod Calanus finmarchicus
Tarrant, Ann; Baumgartner, Mark; Hansen, Bjørn Henrik; Altin, Dag; Nordtug, Trond; Olsen, Anders Johny (Journal article; Peer reviewed, 2014)Introduction Calanus finmarchicus, a highly abundant copepod that is an important primary consumer in North Atlantic ecosystems, has a flexible life history in which copepods in the last juvenile developmental stage (fifth ...