Blar i NINA Brage på forfatter "Olsen, Bergur"
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Circumpolar dynamics of a marine top-predator track ocean warming rates.
Descamps, Sebastian; Anker-Nilssen, Tycho; Barrett, Robert T; Irons, D; Merkel, Flemming; Robertson, Gregory J.; Yoccoz, Nigel Gilles; Mallory, Mark L; Montevecchi, William A.; Boertmann, D.; Artukhin, Yuri; Christensen-Dalsgaard, Signe; Erikstad, Kjell E; Gilchrist, H. Grant; Labansen, Aili; Lorentsen, Svein Håkon; Mosbech, Anders; Olsen, Bergur; Petersen, Aevar; Rail, Jean-Francois; Renner, Heather M.; Strøm, H.; Systad, Geir Helge; Wilhelm, Sabina I.; Zelenskaya, Larisa (Journal article; Peer reviewed, 2017)Global warming is a nonlinear process, and temperature may increase in a stepwise manner. Periods of abrupt warming can trigger persistent changes in the state of ecosystems, also called regime shifts. The responses of ... -
High pathogenicity avian influenza (H5N1) in Northern Gannets (Morus bassanus): Global spread, clinical signs and demographic consequences
Lane, Jude V.; Jeglinski, Jana W.E.; Avery-Gomm, Stephanie; Ballstaedt, Elmar; Banyard, Ashley C.; Barychka, Tatsiana; Brown, Ian H.; Brugger, Brigitte; Burt, Tori V.; Careen, Noah; Castenschiold, Johan H.F.; Christensen-Dalsgaard, Signe; Clifford, Shannon; Collins, Sydney M.; Cunningham, Emma; Danielsen, Jóhannis; Daunt, Francis; D'entremont, Kyle J.N.; Doiron, Parker; Duffy, Steven; English, Matthew D.; Falchieri, Marco; Giacinti, Jolene; Gjerset, Britt; Granstad, Silje; Grémillet, David; Guillemette, Magella; Hallgrímsson, Gunnar T.; Hamer, Keith C.; Hammer, Sjúrður; Harrison, Katherine; Hart, Justin D.; Hatsell, Ciaran; Humpidge, Richard; James, Joe; Jenkinson, Audrey; Jessopp, Mark; Jones, Megan E.B.; Lair, Stéphane; Lewis, Thomas; Malinowska, Alexandra A.; McCluskie, Aly; McPhail, Gretchen; Moe, Børge; Montevecchi, William A.; Morgan, Greg; Nichol, Caroline; Nisbet, Craig; Olsen, Bergur; Provencher, Jennifer; Provost, Pascal; Purdie, Alex; Rail, Jean-François; Robertson, Greg; Seyer, Yannick; Sheddan, Maggie; Soos, Catherine; Stephens, Nia; Strøm, Hallvard; Svansson, Vilhjálmur; Tierney, T. David; Tyler, Glen; Wade, Tom; Wanless, Sarah; Ward, Christopher R.E.; Wilhelm, Sabina I.; Wischnewski, Saskia; Wright, Lucy J.; Zonfrillo, Bernie; Matthiopoulos, Jason; Votier, Stephen C. (Peer reviewed; Journal article, 2023)During 2021 and 2022 High Pathogenicity Avian Influenza (HPAI) killed thousands of wild birds across Europe and North America, suggesting a change in infection dynamics and a shift to new hosts, including seabirds. Northern ... -
Inter-annual variation in winter distribution affects individual seabird contamination with mercury
Albert, Céline; Bråthen, Vegard Sandøy; Descamps, Sebastien; Anker-Nilssen, Tycho; Cherenkov, A.; Christensen-Dalsgaard, Signe; Danielsen, Johannis; Erikstad, Kjell E.; Gavrilo, Maria; Hanssen, Sveinn Are; Helgason, Halfdan Helgi; Jonsson, Jón Einar; Kolbeinsson, Yann; Krasnov, Yuri V.; Langset, Magdalene; Lorentzen, Erlend; Olsen, Bergur; Reiertsen, Tone Kristin; Strøm, Hallvard; Systad, Geir Helge Rødli; Tertitski, G.; Thompson, P.M; Thórarinsson, Torkell Lindberg; Bustamante, P.; Moe, Børge; Fort, Jérôme (Peer reviewed; Journal article, 2021)Migratory seabirds are exposed to various pollutants throughout their annual cycle. Among them, mercury (Hg) is of particular concern given its large impact on animal health. Recent studies suggest that winter is a critical ... -
Multi-colony tracking of two pelagic seabirds with contrasting flight capability illustrates how windscapes shape migratory movements at an ocean-basin scale
Amelineau, Francoise; Tarroux, Arnaud; Lacombe, Simon; Bråthen, Vegard Sandøy; Descamps, Sebastien; Ekker, Morten; Fauchald, Per; Johansen, Malin; Moe, Børge; Anker-Nilssen, Tycho; Bogdanova, Maria I.; Bringsvor, Ingar S.; Chastel, Olivier; Christensen-Dalsgaard, Signe; Daunt, Francis; Dehnhard, Nina; Erikstad, Kjell E.; Ezhov, Aleksey; Gavrilo, Maria; Hansen, Erpur S.; Harris, Mike P.; Helgason, Halfdan Helgi; Langset, Magdalene; Léandri-Breton, Don-Jean; Lorentsen, Svein-Håkon; Merkel, Benjamin; Newell, Mark; Olsen, Bergur; Reiertsen, Tone Kristin; Systad, Geir Helge Rødli; Thorarinsson, Thorkell L.; Åström, Jens; Strøm, Hallvard (Peer reviewed; Journal article, 2023)Migration is a common trait among many animals allowing the exploitation of spatiotemporally variable resources. It often implies high energetic costs to cover large distances, for example between breeding and wintering ... -
Multi-colony tracking reveals spatio-temporal variation in carry-over effects between breeding success and winter movements in a pelagic seabird
Bogdanova, Maria I.; Butler, Adam; Wanless, Sarah; Moe, Børge; Anker-Nilssen, Tycho; Frederiksen, Morten; Boulinier, Thierry; Chivers, Lorraine S.; Christensen-Dalsgaard, Signe; Descamps, Sébastien; Harris, Michael P.; Newell, Mark; Olsen, Bergur; Phillips, Richard A.; Shaw, Deryk; Steen, Harald; Strøm, Hallvard; Thórarinsson, Thorkell L; Daunt, Francis (Journal article; Peer reviewed, 2017)Carry-over effects, whereby events in one season have consequences in subsequent seasons, have important demographic implications. Although most studies examine carry-over effects across 2 seasons in single populations, ... -
North Atlantic winter cyclones starve seabirds
Clairbaux, Manon; Mathewson, Paul; Porter, Warren; Fort, Jérôme; Strøm, Hallvard; Moe, Børge; Fauchald, Per; Descamps, Sebastien; Helgason, Halfdan Helgi; Bråthen, Vegard Sandøy; Merkel, Benjamin; Anker-Nilssen, Tycho; Bringsvor, Ingar Støyle; Chastel, Olivier; Christensen-Dalsgaard, Signe; Danielsen, Jóhannis; Daunt, Francis; Dehnhard, Nina; Erikstad, Kjell E.; Ezhov, Alexey V.; Gavrilo, Maria; Krasnov, Yuri V.; Langset, Magdalene; Lorentsen, Svein-Håkon; Newell, Mark; Olsen, Bergur; Reiertsen, Tone Kristin; Systad, Geir Helge Rødli; Thórarinsson, Thorkell L; Baran, Mark; Diamond, Tony; Fayet, Annette L.; Fitzsimmons, Michelle G.; Frederiksen, Morten; Gilchrist, Hugh G.; Guilford, Tim; Huffeldt, Nicholas P.; Jessopp, Mark; Johansen, Kasper L.; Kouwenberg, Amy-Lee; Linnebjerg, Jannie F.; Major, Heather L.; Tranquilla, Laura McFarlane; Mallory, Mark; Merkel, Flemming R.; Montevecchi, William A.; Mosbech, Anders; Petersen, Aevar; Grémillet, David (Peer reviewed; Journal article, 2021)Each winter, the North Atlantic Ocean is the stage for numerous cyclones, the most severe ones leading to seabird mass-mortality events called ‘‘winter wrecks.’’ During these, thousands of emaciated seabird carcasses are ... -
Seasonal variation of mercury contamination in Arctic seabirds: A pan-Arctic assessment
Albert, Céline; Helgason, Halfdan Helgi; Brault-Favrou, Maud; Robertson, Gregory J.; Descamps, Sebastien; Amélineau, Françoise; Danielsen, Jóhannis; Dietz, Rune; Elliott, Kyle; Erikstad, Kjell E.; Eulaers, Igor; Ezhov, Alexey V.; Fitzsimmo, Michelle G.; Gavrilo, Maria; Golubova, Elena; Grémillet, David; Hatch, Scott; Huffeldt, Nicholas P.; Jakubas, Dariusz; Kitaysky, Alexander S.; Kolbeinsson, Yann; Krasnov, Yuri V.; Lorentsen, Svein Håkon; Lorentzen, Erlend; Mallory, Mark L.; Merkel, Benjamin; Merkel, Flemming Ravn; Montevecchi, William A.; Mosbech, Anders; Olsen, Bergur; Orben, Rachael A.; Patterson, Allison; Provencher, Jennifer; Plumejeaud, Christine; Pratte, Isabeau; Reiertsen, Tone Kristin; Renner, Heather M.; Rojek, Nora; Romano, Marco; Strøm, Hallvard; Systad, Geir Helge Rødli; Takahashi, Akinori; Thiebot, Jean-Baptiste; Thórarinsson, Thorkell Lindberg; Will, Alexis P.; Wojczulanis-Jakubas, Katarzyna; Bustamante, Paco; Fort, Jérôme (Peer reviewed; Journal article, 2020)Mercury (Hg) is a natural trace element found in high concentrations in top predators, including Arctic seabirds. Most current knowledge about Hg concentrations in Arctic seabirds relates to exposure during the summer ...