Browsing NILU Brage by Author "Eulaers, Igor"
Now showing items 1-13 of 13
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Anti-parasite treatment and blood biochemistry in raptor nestlings
Hanssen, Sveinn Are; Sonne, Christian; Bustnes, Jan Ove; Schnug, Lisbeth; Bourgeon, Sophie; Ballesteros, Manuel; Eulaers, Igor; Moum, Truls Borg; Johnsen, Trond Vidar; Kjelgaard-Hansen, Mads; Herzke, Dorte; Jaspers, Veerle; Covaci, Adrian; Eens, Marcel; Halley, Duncan John; Erikstad, Kjell Einar; Ims, Rolf Anker (Journal article; Peer reviewed, 2017)We investigated the effects of parasite removal on various blood clinical–chemical variables (BCCVs). BCCVs are indicators of health, reflecting, e.g., homeostasis of liver, kidney function, and bone metabolism. The study ... -
Antiparasite treatments reduce humoral immunity and impact oxidative status in raptor nestlings
Hanssen, Sveinn Are; Bustnes, Jan Ove; Schnug, Lisbeth; Bourgeon, Sophie; Johnsen, Trond Vidar; Ballesteros, Manuel; Sonne, Christian; Herzke, Dorte; Eulaers, Igor; Jaspers, Veerle; Covaci, Adrian; Eens, Marcel; Halley, Duncan John; Moum, Truls Borg; Ims, Rolf Anker; Erikstad, Kjell E (Journal article; Peer reviewed, 2013) -
Bird feathers as a biomonitor for environmental pollutants: Prospects and pitfalls
Jaspers, Veerle; Covaci, Adrian; Herzke, Dorte; Eulaers, Igor; Eens, Marcel (Journal article; Peer reviewed, 2019)Due to increasing amounts of hazardous chemicals released into the environment, there is a high demand for developing easy and non-destructive biomonitoring tools. In a recent paper published in Trends in Analytical ... -
Ecosystem specific accumulation of organohalogenated compounds: A comparison between adjacent freshwater and terrestrial avian predators
Bustnes, Jan Ove; Bårdsen, Bård-Jørgen; Herzke, Dorte; Bangjord, Georg; Bourgeon, Sophie; Fritsch, Clémentine; Eulaers, Igor (Peer reviewed; Journal article, 2022)Insight into processes determining the exposure of organohalogenated contaminants (OHCs) in wildlife might be gained from comparing predators in different ecosystems. This study compared two avian predator species with ... -
Feathers as integrated archives of environmental stress: Direct and indirect effects of metal exposure and dietary ecology on physiological stress in a terrestrial raptor
Hansen, Elisabeth; Bustnes, Jan Ove; Herzke, Dorte; Bangjord, Georg; Ballesteros, Manuel; Bårdsen, Bård-Jørgen; Bollinger, Eric; Schulz, Ralf; Eulaers, Igor; Bourgeon, Sophie (Peer reviewed; Journal article, 2024)Metal pollution is a global environmental issue with adverse biological effects on wildlife. Long-term studies that span declines in metal emissions due to regulation, resulting in varying levels of environmental contamination, ... -
The impact of climate sensitive factors on the exposure to organohalogenated contaminants in an aquatic bird exploiting both marine and freshwater habitats
Bustnes, Jan Ove; Bårdsen, Bård-Jørgen; Herzke, Dorte; Bangjord, Georg; Bollinger, Eric; Bourgeon, Sophie; Schulz, Ralf; Fritsch, Clémentine; Eulaers, Igor (Peer reviewed; Journal article, 2022)To assess how climate-sensitive factors may affect the exposure to organochlorines (OCs) and perfluoroalkyl substances (PFASs), we monitored concentrations in eggs of the common goldeneye (Bucephala clangula) over two ... -
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, 2023)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 ... -
A novel use of the leukocyte coping capacity assay to assess the immunomodulatory effects of organohalogenated contaminants in avian wildlife
Hansen, Elisabeth; Huber, Nikolaus; Bustnes, Jan O.; Herzke, Dorte; Bårdsen, Bård-Jørgen; Eulaers, Igor; Johnsen, Trond V.; Bourgeon, Sophie (Peer reviewed; Journal article, 2020)Apex predators are characterized by high levels of biomagnifying organohalogenated contaminants (OHCs) which have been found to induce detrimental health effects in wildlife, such as immune system impairment. The leukocyte ... -
Plasma concentrations of organohalogenated contaminants in white-tailed eagle nestlings – The role of age and diet
Løseth, Mari Engvig; Briels, Nathalie; Eulaers, Igor; Nygård, Torgeir; Malarvannan, Govindan; Poma, Giulia; Covaci, Adrian; Herzke, Dorte; Bustnes, Jan Ove; Lepoint, Gilles; Jenssen, Bjørn Munro; Jaspers, Veerle (Journal article; Peer reviewed, 2019)Concentrations of organohalogenated contaminants (OHCs) can show significant temporal and spatial variation in the environment and wildlife. Most of the variation is due to changes in use and production, but environmental ... -
A schematic sampling protocol for contaminant monitoring in raptors
Espín, Silvia; Andevski, Jovan; Duke, Guy; Eulaers, Igor; Gomez-Ramirez, Pilar; Hallgrimsson, Gunnar Thor; Helander, Björn; Herzke, Dorte; Jaspers, Veerle; Krone, Oliver; Lourenco, Rui; Maria-Mojica, Pedro; Martínez-López, Emma; Mateo, Rafael; Movalli, Paola; Sanchez-Virosta, Pablo; Shore, Richard F.; Sonne, Christian; van den Brink, Nico W.; van Hattum, B.; Vrezec, Al; Wernham, Chris; García-Fernández, Antonio J. (Peer reviewed; Journal article, 2020)Birds of prey, owls and falcons are widely used as sentinel species in raptor biomonitoring programmes. A major current challenge is to facilitate large-scale biomonitoring by coordinating contaminant monitoring activities ... -
Spatiotemporal Analysis of Perfluoroalkyl Substances in White-Tailed Eagle (Haliaeetus albicilla) Nestlings from Northern Norway-A Ten-Year Study
Jouanneau, William; Bårdsen, Bård-Jørgen; Herzke, Dorte; Johnsen, Trond Vidar; Eulaers, Igor; Bustnes, Jan Ove (Peer reviewed; Journal article, 2020)The white-tailed eagle (Haliaeetus albicilla) in Scandinavia has suffered from impaired reproduction due to high exposure to industrial pollution between the 1960s and 1980s. While population numbers are rising again, new ... -
Temporal Trends of Organochlorine and Perfluorinated Contaminants in a Terrestrial Raptor in Northern Europe Over 34 years (1986–2019)
Bustnes, Jan Ove; Bårdsen, Bård-Jørgen; Herzke, Dorte; Bangjord, Georg; Bourgeon, Sophie; Fritsch, Clémentine; Eulaers, Igor (Peer reviewed; Journal article, 2022)Fourteen legacy organochlorine (OC) contaminants and 12 perfluoroalkyl substances (PFASs) were measured in eggs of tawny owls (Strix alueco) in central Norway (1986–2019). We expected OCs to have reached stable equilibrium ... -
Tracking pan-continental trends in environmental contamination using sentinel raptors—what types of samples should we use?
Espín, Silvia; García-Fernández, Antonio J.; Herzke, Dorte; Shore, Richard F.; van Hattum, Bert; Martínez-López, Emma; Coeurdassier, Michael; Eulaers, Igor; Fritsch, Clémentine; Gómez-Ramírez, Pilar; Jaspers, Veerle; Krone, Oliver; Duke, Guy; Helander, Björn; Mateo, Rafael; Movalli, Paola; Sonne, Christian; van den Brink, Nico W. (Journal article; Peer reviewed, 2016)