Blar i Institutt for biologi på tittel
Viser treff 1333-1352 av 2521
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Lead isotopic signatures in blood from incubating common eiders (Somateria mollissima) in the central Baltic Sea
(Peer reviewed; Journal article, 2020)The Christiansø colony of common eiders (Somateria mollissima) in the central Baltic Sea were exposed to high levels of Pb during the 2018 breeding season that were not present in 2017. Due to these high Pb blood levels, ... -
Leads in Arctic pack ice enable early phytoplankton blooms below snow-covered sea ice
(Journal article; Peer reviewed, 2017)The Arctic icescape is rapidly transforming from a thicker multiyear ice cover to a thinner and largely seasonal first-year ice cover with significant consequences for Arctic primary production. One critical challenge is ... -
Leaf it to the professionals: Branching out to restore deciduous forests in southern Norway.
(Master thesis, 2023)While restoration endeavors in Scandinavia and Northern Europe have predominantly concentrated on boreal forests, the often-overlooked boreonemoral forests, sharing similar characteristics, demand equal attention. These ... -
Legacy and emerging organohalogenated compounds in feathers of Eurasian eagle-owls (Bubo bubo) in Norway: Spatiotemporal variations and associations with dietary proxies (δ13C and δ15N)
(Peer reviewed; Journal article, 2021)The occurrence of organohalogenated compounds (OHCs) in wildlife has received considerable attention over the last decades. Among the matrices used for OHCs biomonitoring, feathers are particularly useful as they can be ... -
Legacy and emerging per- and polyfluorinated alkyl substances (PFASs) in sediment and edible fish from the Eastern Red Sea
(Journal article; Peer reviewed, 2021) -
Levels and Effects of Organohalogenated Contaminants on Thyroid Hormone Levels in Glaucous Gulls (Larus hyperboreus) from Kongsfjorden, Svalbard.
(Master thesis, 2011)The glaucous gull (Larus hyperboreus) is one of the largest flying top predators in the Arctic and is exposed to rather high levels of different persistent organohalogenated contaminants (OHCs). The present study investigated ... -
Levels and Effects of Organohalogens on Corticosterone Hormones in glaucous gulls (Larus hyperboreus) from Kongsfjorden, Svalbard
(Master thesis, 2014)Long-range atmospheric transport, ocean currents, sea ice and rivers are transporting environmental contaminants into the Arctic. Some of these contaminants can reach high concentrations in the upper trophic levels in the ... -
Levels and effects of persistent organic pollutants (POPs) in seabirds. Retinoids and a-tocopherol - potential biomarkers of POPs in birds?
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:6, Doctoral thesis, 2006)In the present thesis, levels of polychlorinated biphenyls (PCBs), some chosen organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCD) were analyzed by gas chromatography ... -
Levels and effects of persistent organic pollutants (POPs) on circulating thyroid hormones in house sparrows (Passer domesticus) from Leka, Norway
(Master thesis, 2014)Persistent organic pollutants (POPs) have been reported to disrupt vertebrate endocrine systems in numerous wildlife, semi-field and laboratory studies, and thyroid homeostasis is among the systems reported to be susceptible ... -
Levels and endocrine disruptive effects of legacy POPs and their metabolites in long-finned pilot whales of the Faroe Islands
(Doctoral theses at NTNU;2017:279, Doctoral thesis, 2017)Pilot whales (Globicephala melas) in the Northeastern part of the Atlantic Ocean have high body concentrations of persistent organic pollutants (POPs), such as polychlorinated biphenyls (PCBs), organochlorinated pesticides ... -
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
(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
(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 ... -
Levels, patterns, and biomagnification potential of perfluoroalkyl substances in a terrestrial food chain in a Nordic Skiing Area
(Journal article; Peer reviewed, 2019)Perfluoroalkyl substances (PFASs) are used in a wide range of consumer products, including ski products, such as ski waxes. However, there is limited knowledge on the release of PFASs from such products into the environment ... -
Lichens facilitate seedling recruitment in alpine heath
(Peer reviewed; Journal article, 2019)Questions How do mat thickness, physical structure and allelopathic properties of terricolous mat‐forming lichens affect recruitment of vascular plants in dwarf‐shrub and lichen heath vegetation? Location The mountains of ... -
Life and Light at the Dead of Night
(Chapter, 2020)The Polar Nigth as a unique beauty. The aurora borealis, the moonlight, the faint glow of the sun behind white mountains, and, not the least, the mysteries of the living creatures that we have found in the Polar Night – ...