Blar i Fakultet for naturvitenskap (NV) på emneord "Environmental Toxicology and Chemistry, Environmental Toxicology"
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Levels and Potential Genotoxic Effects of Organohalogenated Contaminants in Seabird Eggs from Svalbard
(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 ... -
Levels and Potential Immunotoxicity of Perfluoroalkyl and Polyfluoroalkyl Substances (PFASs) in White-Tailed Eagles (Haliaeetus albicilla), Norway
(Master thesis, 2016)The white-tailed eagle (WTE) is exposed to a wide range of contaminants due to its high trophic position in the marine ecosystem. Perfluoroalkyl and polyfluoroalkyl substances (PFASs) are persistent and bioaccumulative ... -
Levels of emerging and traditional organic Pollutants in Northern Goshawk (Accipiter gentilis) from Trøndelag. Potential Effects on oxidative Stress.
(Master thesis, 2016)Due to the implemented restrictions and bans of many persistent organic pollutants (POPs), the production and use of alternative chemicals are increasing. The lack of knowledge regarding the environmental occurrence, ... -
Levels of Perfluoroalkyl and Polyfluoroalkyl Substances (PFASs) in Feathers of Eurasian Eagle-Owls (Bubo bubo) in Norway
(Master thesis, 2017)In the current study per- and polyfluroalkyl substances (PFASs) were investigated in 72 feathers from Eurasian Eagle-Owls (Bubo bubo) collected in four geographically similar areas in Norway and in six different years. The ... -
Levels of Perfluoroalkyl and Polyfluoroalkyl Substances (PFASs) in Northern Goshawk (Accipiter gentilis) nestlings from Norway and Spain and potential effect on innate immune system signalling pathways
(Master thesis, 2018)Per- and polyfluoroalkyl substances (PFASs) are environmentally persistent and bioaccumulative chemicals, which reach high levels in apex predators like birds of prey. Immunomodulation is among the most concerning toxic ... -
Migration Patterns Affect Element Concentrations in an Arctic Seabird
(Master thesis, 2015)Arctic seabirds have often been used to assess metal levels in remote regions. Most Arctic-breeding seabirds are migratory, and differences in wintering locations and migration patterns have been suggested to affect their ... -
Occurrence of perfluorinated alkylated substances (PFASs) and evaluation of potential genotoxic effects in small rodents from a skiing area, Granåsen, Norway
(Master thesis, 2018)The aim of the project is to sample small mammals from Granåsen, a PFAS hotspot area, and compare them to the population of Jonsvatnet, chosen as a reference area. -
Perfluoroalkyl and Polyfluoroalkyl Substances (PFASs) Affect the Thyroid Hormone System, Body Condition, and Body Mass in Two Arctic Seabird Species
(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 ... -
Proteome and Growth Responses of the Key Species Calanus finmarchicus to future Ocean Acidification and Warming
(Master thesis, 2015)The zooplankton Calanus finmarchicus is a key species in the North Atlantic, by linking the primary production with upper trophic levels and by contributing to vertical export of carbon. Copepod eggs were cultured to a ... -
Relationships Between Environmental and Biological Variables, Plasma Clinical-Chemical Parameters and Persistent Organic Pollutants (POPs) in Polar Bears (Ursus maritimus) from Svalbard, Norway
(Master thesis, 2015)Few previous studies have reported on levels of clinical-chemical parameters (CCPs) in polar bears (Ursus maritimus), and to date, only one study has investigated levels of CCPs and how they are related to persistent organic ... -
Seasonal Variations in Thyroid Disrupting Effects of Persistent Organic Pollutants in Polar Bears (Ursus maritimus) from Svalbard
(Master thesis, 2016)Several persistent organic pollutants (POPs) have the ability to interfere with the thyroid hormone (TH) system in arctic mammals. This endocrine system is crucial for adapting to a changing environment, and it is an ... -
The Impact of Toxic Elements and Persistent Organic Pollutants on Avian Influenza Prevalence in Arctic Seabirds
(Master thesis, 2018)As climate change alters northern environments, the dynamics of Arctic disease are predicted to undergo shifts. These shifts may also be influenced by the immunomodulatory properties of anthropogenic contaminants present ... -
Thyroid hormone status and thyroid gland histology in PFAS- and mercury contaminated glaucous gulls (Larus hyperboreus) from Svalbard
(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 ... -
Toxic and Genotoxic Effects of Fast Pyrolysis Oils Generated from Three Different Feedstocks Evaluated in an Allium cepa Chromosome Aberration Assay
(Master thesis, 2014)Non-renewable energy sources cover the majority of today s energy demand. However, due to uncertainty of available petroleum reserves and great environmental impacts associated with the use of petroleum, renewable energy ... -
Uptake and effects of microplastic particles in selected marine microalgae species; Oxyrrhis marina and Rhodomonas baltica
(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
(Master thesis, 2017)Studier av opptak og utskillelse av polystyren mikroplast i den marine kopepoden Calanus finmarchicus