Browsing NTNU Open by Author "Olsen, Anders Johny"
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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 ... -
Acute Toxicity and Stress Gene Transcription in Two Copepod Species (Calanus finmarchicus and Calanus glacialis) Exposed to Fresh Crude Oil WSF
Rørvik, Siv Fiske (Master thesis, 2011)Increasing oil activities from the gas and oil industry may constitute a hazard towards the marine environment due to potential risks for accidents, such as oil spills. This study examine acute eects on mortality (LC50) ... -
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. ... -
Combined effects of exposure to engineered silver nanoparticles and the water-soluble fraction of crude oil in the marine copepod Calanus finmarchicus
Farkas, Julia; Cappadona, V; Olsen, Anders Johny; Hansen, Bjørn Henrik; Posch, Wilfried; Ciesielski, Tomasz Maciej; Goodhead, Rhys; Wilflingseder, Doris; Blatzer, M; Altin, Dag; Moger, Julian; Booth, Andrew; Jenssen, Bjørn Munro (Peer reviewed; Journal article, 2020)While it is likely that ENPs may occur together with other contaminants in nature, the combined effects of exposure to both ENPs and environmental contaminants are not studied sufficiently. In this study, we investigated ... -
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 ... -
Effects of Crude Oil Water Accommodated Fractions (WAF) on the Escape Behaviour in Calanus finmarchicus Gunnerus (Copepoda)
Fines, Ida (Master thesis, 2012)SammendragDen dominerende planktonorganismen i Atlanterhavet og Barentshavet er den calanoide kopepoden Calanus finmarchicus. Den er en nøkkelart i den marine næringskjeden, og har evnen til å lagre store mengder fett, som ... -
Effects of produced water components on the early life stages of Calanus finmarchicus and Calanus hyperboreus reared at different temperatures
Utne, Katarina (Master thesis, 2017)Receding sea ice, as a result global warming, increases the marine access to the petroleum resources in the Arctic. Due to the increasing global energy demand, more oil and gas activity is likely to occur. Petroleum ... -
Effects of produced water on growth and development of Calanus finmarchicus and Calanus hyperboreus early life stages at different temperatures
Jørgensen, Ingrid Kvinge (Master thesis, 2017)The temperature in the Arctic is increasing, which causes the sea ice to retreat. This opens for more offshore activity and longer shipping season for transportation vessels. The Arctic region is thought to contain large ... -
Exposure of juvenile turbot (Scophthalmus maximus) to AgNP-EE2 mixtures: Implications on contaminant bioavailability and plasma steroid hormone levels
Farkas, Julia; Salaberria, Iurgi; Styrishave, Bjarne; Stanková, Radka; Ciesielski, Tomasz Maciej; Olsen, Anders Johny; Posch, Wilfried; Flaten, Trond Peder; Krøkje, Åse; Salvenmoser, Willi; Jenssen, Bjørn Munro (Journal article; Peer reviewed, 2017)Combined exposure to engineered nanoparticles (ENPs) and anthropogenic contaminants can lead to changes in bioavailability, uptake and thus effects of both groups of contaminants. In this study we investigated effects of ... -
Growth and Energy Utilization Under Different Temperature Regimes in Early Life-Stages of the Copepod Calanus finmarchicus
Buraas, Pål Fredrik (Master thesis, 2015)The calanoid copepod Calanus finmarchicus (Gunnerus) dominates the biomass and is considered a key species in the North Atlantic pelagic ecosystem. The species is found close to oil production fields along the Norwegian ... -
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 ... -
Medium-term exposure of the North Atlantic copepod Calanus finmarchicus (Gunnerus, 1770) to CO2-acidified seawater: effects on survival and development
Pedersen, Sindre Andre; Hansen, Bjørn Henrik; Altin, D; Olsen, Anders Johny (Journal article; Peer reviewed, 2013)The impact of medium-term exposure to CO2-acidified seawater on survival, growth and development was investigated in the North Atlantic copepod Calanus finmarchicus. Using a custom developed experimental system, fertilized ... -
Multigenerational exposure to ocean acidification during food limitation reveals consequences for copepod scope for growth and vital rates
Pedersen, Sindre Andre; Håkedal, Ole Jakob; Salaverria-Zabalegui, Iurgi Imanol; Tagliati, Alice; Gustavson, Liv Marie; Jenssen, Bjørn Munro; Olsen, Anders Johny; Altin, Dag (Journal article; Peer reviewed, 2014)The copepod Calanus finmarchicus is a key component of northern Atlantic food webs, linking energy-transfer from phytoplankton to higher trophic levels. We examined the effect of different ocean acidification (OA) scenarios ... -
Produced water components: uptake kinetics and effects on the metabolism of the Arctic copepod Calanus glacialis
Bergentz, Sara Hanna Amalia (Master thesis, 2016)The oil exploration and search for new oil production fields is expanding further north and has reached the Arctic. Oil drilling activities release large amounts of produced water (PW) to the marine environment and sub-lethal ... -
The impact of TiO2 nanoparticles on uptake and toxicity of benzo(a)pyrene in the blue mussel (Mytilus edulis)
Farkas, Julia; Bergum, Signe; Nilsen, Emil Wear; Olsen, Anders Johny; Salaverria-Zabalegui, Iurgi Imanol; Ciesielski, Tomasz Maciej; Baczek, Tomasz; Konieczna, Lucyna; Salvenmoser, Willi; Jenssen, Bjørn Munro (Journal article; Peer reviewed, 2015)Nanoparticles are emerging contaminants of concern. Knowledge on their environmental impacts is scarce, especially on their interactive effects with other contaminants. In this study we investigated effects of titanium ... -
The β-oxidation pathway is downregulated during diapause termination in Calanus copepods
Skottene, Elise; Tarrant, Ann M.; Olsen, Anders Johny; Altin, Dag; Østensen, Mari-Ann; Hansen, Bjørn Henrik; Choquet, Marvin; Jenssen, Bjørn Munro; Olsen, Rolf Erik (Journal article; Peer reviewed, 2019)Calanus copepods are keystone species in marine ecosystems, mainly due to their high lipid content, which is a nutritious food source for e.g. juvenile fish. Accumulated lipids are catabolized to meet energy requirements ... -
Trace metal mobility in sub-seabed sediments by CO2 seepage under high-pressure conditions
Basallote, M. Dolores; Borrero Santiago, Ana Rocío; Cánovas, Carlos; Hammer, Karen Marie; Olsen, Anders Johny; Ardelan, Murat Van (Peer reviewed; Journal article, 2020)Carbon capture and storage (CCS) is the third contributor to cumulative carbon emission reductions required by the second half of this century. Although this is a promising technology for reducing atmospheric CO2, it is ... -
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 ... -
Uptake and effects of microplastic particles in selected marine microalgae species; Oxyrrhis marina and Rhodomonas baltica
Lyakurwa, Dionis Joachim (Master thesis, 2017)It is estimated that large numbers of microplastics are present in the marine environment and their concentrations are expected to rise in a foreseeable future. Interactions, uptake, and excretion rates as well as effects ... -
Uptake and excretion of polystyrene microplastics in the marine copepod Calanus finmarchicus
Halland, Gunhild Rogne (Master thesis, 2017)Studier av opptak og utskillelse av polystyren mikroplast i den marine kopepoden Calanus finmarchicus