Browsing NTNU Open by Author "Gabrielsen, Geir Wing"
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Competitive Binding of Persistent Organic Pollutants to the Thyroid Hormone Transport Protein Transthyretin in Glaucous Gull (Larus hyperboreus).
Mortensen, Åse-Karen (Master thesis, 2015)The glaucous gull (Larus hyperboreus) is one of the largest avian top predators in the Arctic. High levels of persistent organic pollutants (POPs) and their metabolites have been detected in the glaucous gull, and several ... -
DNA double-strand breaks in relation to organohalogenated contaminants in arctic seabird species
Michelsen, Marit Vågenes (Master thesis, 2020)Organohalogenerte miljøgifter (OHCs) har blitt assosiert med ugunstige effekter på DNA- integriteten, noe som kan føre til alvorlige biologiske konsekvenser både på individ-og populasjonsnivå. Hensikten med denne studien ... -
Effects of climate change and diminishing sea ice on Common Eider breeding distribution in Kongsfjorden, Svalbard
Dørum, Hilde (Master thesis, 2019)Jordas polare strøk varmes opp dobbelt så raskt som resten av kloden, og en av de største truslene knyttet til global oppvarming er nedsmelting av isen i polområdene. Verdens sjøfuglbestander synker i antall, og et stort ... -
Impacts of a warming climate on concentrations of organochlorines in a fasting high arctic marine bird: Direct vs. indirect effects?
Bustnes, Jan Ove; Bårdsen, Bård-Jørgen; Moe, Børge; Herzke, Dorte; Ballesteros, Manuel; Fenstad, Anette; Borgå, Katrine; Krogseth, Ingjerd Sunde; Eulaers, Igor; Skogeng, Lovise Pedersen; Gabrielsen, Geir Wing; Hanssen, Sveinn Are (Peer reviewed; Journal article, 2024)The present study examined how climate changes may impact the concentrations of lipophilic organochlorines (OCs) in the blood of fasting High Arctic common eiders (Somateria mollissima) during incubation. Polychlorinated ... -
Interactions between Pollutant Exposure and the Physiology in Adult Kittiwakes (Rissa tridactyla) at Svalbard
Svendsen, Niels Borup (Master thesis, 2015)This study investigated the use of feathers as a useful non-destructive biomonitoring tool for novel organic pollutants in black-legged kittiwakes (Rissa tridactyla), and evaluated the interaction of both novel and legacy ... -
Isbjørnens effekt på fugl i et arktisk klima i endring - Sluttrapport for Svalbards miljøvernfond
Moe, Børge; Prop, Jouke; Aars, Jon; Bårdsen, Bård-Jørgen; Hanssen, Sveinn Are; Bech, Claus; Bourgeon, Sophie; Fouw, Jimmy de; Gabrielsen, Geir Wing; Lang, Johannes; Noreen, Elin; Oudman, Thomas; Sittler, Benoit; Stempniewicz, Lech; Tombre, Ingunn; Wolters, Eva (NINA Rapport;1163, Research report, 2015)Arktis blir stadig varmere og utbredelsen av havis blir mindre. Det forandrer leveområdet til de mange artene som er avhengige av havis. Isbjørnen er avhengig av havis for å jakte på sel, og økende lengde på den isfrie ... -
Level and potential genotoxic effects of perfluoralkyl substances in three arctic seabird species
Larsen, Christina Moen (Master thesis, 2022) -
Levels and Potential Effects of PCBs, OH-PCBs, OH-PBDEs, and Hg on Plasma Progesterone Levels in Breeding Glaucous Gulls (Larus hyperboreus) from Kongsfjorden, Svalbard
Taylor, Tomas Arvid (Master thesis, 2016)Arctic life faces the risk of exposure to a magnitude of anthropogenic pollutants. Due to the chemical stability and persistence of many organic pollutants, they are able to undergo long-range transportation from emission ... -
Levels and Potential Genotoxic Effects of Organohalogenated Contaminants in Seabird Eggs from Svalbard
Rodvelt, Randi Haarstad (Master thesis, 2018)Organohalogenated contaminants (OHCs) have been detected in relative high levels in arctic seabirds and eggs and are of great concern due to their potential toxic effects. OHCs are incorporated into the eggs during egg ... -
Mind the wind: microclimate effects on incubation effort of an arctic seabird
Hilde, Christoffer Høyvik; Pélabon, Christophe; Guéry, Loreleï; Gabrielsen, Geir Wing; Descamps, Sébastien (Journal article; Peer reviewed, 2016-02-21)The energetic costs of reproduction in birds strongly depend on the climate experienced during incubation. Climate change and increasing frequency of extreme weather events may severely affect these costs, especially for ... -
Perfluorinated substances and telomeres in an Arctic seabird: Cross-sectional and longitudinal approaches
Blévin, Pierre; Angelier, Frédéric; Tartu, Sabrina; Bustamante, Paco; Herzke, Dorte; Moe, Børge; Bech, Claus; Gabrielsen, Geir Wing; Bustnes, Jan Ove; Chastel, Olivier (Journal article; Peer reviewed, 2017)Telomeres are non-coding DNA repeats located at the termini of eukaryotic chromosomes, regulated by dynamic processes balancing shortening and maintenance. Despite a mechanism to slow-down telomere shortening, cell division ... -
Perfluoroalkyl and Polyfluoroalkyl Substances (PFASs) Affect the Thyroid Hormone System, Body Condition, and Body Mass in Two Arctic Seabird Species
Ask, Amalie Vigdel (Master thesis, 2015)Perfluoroalkyl and polyfluoroalkyl substances (PFASs) are being transported into the Arctic where they are frequently detected in wildlife. These compounds are suspected thyroid hormone (TH) disruptors due to their structural ... -
Perfluoroalkyl substances are positively correlated with triiodothyronine concentrations, but not metabolic rate in breeding arctic terns (Sterna paradisaea)
Aune, Aslak Arnesson (Master thesis, 2021)Perfluorerte alkylstoffer (PFAS) er allestedsnærværende miljøgifter, hvorav mange er svært persistente. Forskning tyder på at denne kjemikaliegruppen har tyroidhormonforstyrrende egenskaper og mulige effekter på metabolismen ... -
Temporal Variations in Organohalogenated Contaminants and Associated Thyroid Hormone Responses in Two Arctic Glaucous Gull (Larus hyperboreus) Populations
Vedal, Andrine Vindstad (Master thesis, 2021)Polyklorerte bifenyler (PCBs), organiske klorerte pesticider (OCPer), og per- og polyfluorerte stoffer (PFASer) er persistente organiske forurensninger (POPer) som finnes i det uberørte Arktis, til tross for at produksjonen ... -
The Effect of Persistent Organic Pollutants on Thyroid Hormone Levels in Arctic Breeding Kittiwake (Rissa tridactyla)
Johnsen, Ida Egge (Master thesis, 2011)Black-legged kittiwakes (Rissa tridactyla) breeding in the Arctic, are exposed to annual fluctuating environmental conditions. The impact of inter-year variations in environmental conditions on the blood concentrations of ... -
The role of migratory birds in the transport of pollutants to the Arctic
Lakså, Sigrid Bergseng (Master thesis, 2021)Reint intuitivt bør Arktis, en avsidesliggende og øde del av verden, være relativt upåvirka av menneskelig aktivitet. Langtransport og avsetting av persistente, bioakkumulative og giftige stoffer (PBG) fra atmosfæren og ... -
Thyroid hormone status and thyroid gland histology in PFAS- and mercury contaminated glaucous gulls (Larus hyperboreus) from Svalbard
Hovden, Torunn Slettemark (Master thesis, 2018)The glaucous gull (Larus hyperboreus) is a scavenger and top predator in the Arctic marine food web. Due to its high trophic position, it is highly exposed to organohalogenated compounds (OHCs) and metals originating from ...