Blar i NINA Brage på forfatter "Anker-Nilssen, Tycho"

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    • Local prey shortages drive foraging costs and breeding success in a declining seabird, the Atlantic puffin 

      Fayet, Annette L.; Clucas, Gemma V.; Anker-Nilssen, Tycho; Syposz, Martyna; Hansen, Erpur S. (Peer reviewed; Journal article, 2021)
      1. As more and more species face anthropogenic threats, understanding the causes of population declines in vulnerable taxa is essential. However, long-term datasets, ideal to identify lasting or indirect effects on fitness ...

    • Massedød av lomvi i Nordsjøområdet vinteren 2021/22. Resultater fra obduksjonen av lomvi samlet inn in Viken, Agder og Rogaland 

      Christensen-Dalsgaard, Signe; Langset, Magdalene; Anker-Nilssen, Tycho (NINA Rapport;2146, Research report, 2022)
      Christensen-Dalsgaard, S., Langset, M. & Anker-Nilssen, T. 2022. Massedød av lomvi i Nord-sjøområdet vinteren 2021/22. Resultater fra obduksjonen av lomvi samlet inn in Viken, Agder og Rogaland. NINA Rapport 2146. Norsk ...

    • Model-based assessment of marine bird population status using monitoring of breeding productivity and abundance 

      Frederiksen, Morten; Anker-Nilssen, Tycho; Schekkerman, Hans; Dierschke, Volker; Parsons, Matt; Marra, Stefano; Mitchell, Ian (Peer reviewed; Journal article, 2023)
      Vertebrate populations are often monitored as part of broader assessments of ecosystem status, where they are expected to provide information on the ability of the ecosystem to support higher-level predators. However, ...

    • Modelled drift patterns of fish larvae link coastal morphology to seabird colony distribution 

      Sandvik, Hanno; Barrett, Robert T; Erikstad, Kjell E; Myksvoll, Mari Skuggedal; Vikebø, Frode Bendiksen; Yoccoz, Nigel Gilles; Anker-Nilssen, Tycho; Lorentsen, Svein-Håkon; Reiertsen, Tone; Skardhamar, Jofrid; Skern-Mauritzen, Mette; Systad, Geir Helge (Peer reviewed; Journal article, 2016)

    • 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, ...

    • New tools to evaluate plastic ingestion by northern fulmars applied to North Sea monitoring data 2002–2018 

      van Franeker, Jan A.; Kühn, Susanne; Anker-Nilssen, Tycho; Edwards, Ewan W.J.; Gallien, Fabrice; Guse, Nils; Kakkonen, Jenni E.; Mallory, Mark L.; Miles, Will; Olsen, Kåre Olav; Pedersen, John; Provencher, Jennifer; Roos, Mervyn; Stienen, Eric; Turner, Daniel M.; van Loon, Willem M.G.M. (Peer reviewed; Journal article, 2021)
      Monitoring plastic in stomachs of beached northern fulmars for OSPAR’s Ecological Quality Objectives (EcoQOs) has been incorporated into the European Marine Strategy Framework Directive (MSFD). This paper aims to provide ...

    • 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 ...

    • Ocean-wide drivers of migration strategies and their influence on population breeding performance in a declining seabird 

      Fayet, Annette L.; Freeman, Robin; Anker-Nilssen, Tycho; Diamond, Antony; Erikstad, Kjell E; Fifield, Dave; Fitzsimmons, Michelle G; Hansen, Erpur Snær; Harris, Mike P.; Jessopp, Mark; Kouwenberg, Amy-Lee; Kress, Steve; Mowat, Stephen; Perrins, Chris M.; Petersen, Aevar; Petersen, Ib K.; Reiertsen, Tone; Robertson, Gregory J.; Shannon, Paula; Sigurðsson, Ingvar A.; Shoji, Akiko; Wanless, Sarah; Guilford, Tim (Journal article; Peer reviewed, 2017)
      Which factors shape animals’ migration movements across large geographical scales, how different migratory strategies emerge between populations, and how these may affect population dynamics are central questions in ...

    • Offshore oil rigs – a breeding refuge for Norwegian Black-legged Kittiwakes Rissa tridactyla? 

      Christensen-Dalsgaard, Signe; Langset, Magdalene; Anker-Nilssen, Tycho (Peer reviewed; Journal article, 2020)
      In recent decades, the population of Black-legged Kittiwake Rissa tridactyla has declined substantially in most parts of the North Atlantic. Concurrently, there has been an increased urbanisation of the species, with ...

    • Overvåking av ærfuglbestanden i Oslofjorden. Årsrapport 2022 

      Hanssen, Sveinn Are; Moe, Børge; Anker-Nilssen, Tycho (NINA Rapport;2193, Research report, 2022)
      Hanssen, S.A., Moe, B. & Anker-Nilssen, T. 2022. Overvåking av ærfuglbestanden i Oslofjorden. NINA Rapport 2193. Norsk institutt for naturforskning. I mars 2020 varslet privatpersoner om døde og døende ærfugl i Larvik-området ...

    • Overvåking av ærfuglbestanden i Oslofjorden. Årsrapport 2023 

      Hanssen, Sveinn Are; Moe, Børge; Anker-Nilssen, Tycho (NINA Rapport;2362, Research report, 2023)
      Hanssen, S.A., Moe, B. & Anker-Nilssen, T. 2023. Overvåking av ærfuglbestanden i Oslofjorden. Årsrapport 2023. NINA Rapport 2362. Norsk institutt for naturforskning. I mars 2020 varslet privatpersoner om døde og døende ...

    • Population status, breeding biology and diet of Norwegian Great Cormorants 

      Lorentsen, Svein-Håkon; Anker-Nilssen, Tycho; Barrett, Robert; Systad, Geir Helge Rødli (Peer reviewed; Journal article, 2021)
      Two subspecies of the Great Cormorant breed in Norway, the continental Phalacrocorax carbo sinensis in the south, along the Skagerrak coast, and the marine P. c. carbo from central Norway and northwards. Here we review the ...

    • Predicting Foraging Habitat of European Shags - A Multi-Year and Multi-Colony Tracking Approach to Identify Important Areas for Marine Conservation 

      Dehnhard, Nina; Mattisson, Jenny; Tarroux, Arnaud; Anker-Nilssen, Tycho; Lorentsen, Svein-Håkon; Christensen-Dalsgaard, Signe (Peer reviewed; Journal article, 2022)
      Human activity in the coastal zone is increasing worldwide, putting a number of seabird species under pressure. Norway is no exception to this development, and with > 35% of the NE Atlantic population of the currently ...

    • Raising offspring increases ageing: Differences in senescence among three populations of a long-lived seabird, the Atlantic puffin 

      Landsem, Terje Lorentzen; Yoccoz, Nigel Gilles; Layton-Matthews, Kate; Hilde, Christoffer Høyvik; Harris, Michael P; Wanless, Sarah; Daunt, Francis; Reiertsen, Tone Kristin; Erikstad, Kjell E.; Anker-Nilssen, Tycho (Peer reviewed; Journal article, 2023)
      1. Actuarial senescence, the decline of survival with age, is well documented in the wild. Rates of senescence vary widely between taxa, to some extent also between sexes, with the fastest life histories showing the highest ...

    • Seabird-induced natural mortality of forage fish varies with fish abundance: Evidence from five ecosystems 

      Saraux, Claire; Sydeman, William J.; Piatt, John F.; Anker-Nilssen, Tycho; Hentati-Sundberg, Jonas; Bertrand, Sophie; Cury, Philippe M.; Furness, Robert W.; Mills, James A.; Österblom, Henrik; Passuni, Giannina; Roux, Jean-Paul; Shannon, Lynne J.; Crawford, Robert J. M. (Peer reviewed; Journal article, 2020)

    • Seabirds as guides for fisheries management: European shag Phalacrocorax aristotelis diet as indicator of saithe Pollachius virens recruitment 

      Lorentsen, Svein Håkon; Anker-Nilssen, Tycho; Erikstad, Kjell E (Journal article; Peer reviewed, 2018)

    • Seabirds as indicators of distribution, trends and population level effects of plastics in the Arctic marine environment. Workshop Report 

      Dehnhard, Nina; Herzke, Dorte; Gabrielsen, Geir Wing; Anker-Nilssen, Tycho; Ask, Amalie; Christensen-Dalsgaard, Signe; Descamps, Sebastien; Hallanger, Ingeborg; Hanssen, Sveinn Are; Langset, Magdalene; Monclús, Laura; O'Hanlon, Nina; Reiertsen, Tone Kristin; Strøm, Hallvard (NINA Rapport;1719, Research report, 2019)
      Nina Dehnhard, Dorte Herzke, Geir Wing Gabrielsen, Tycho Anker-Nilssen, Amalie Ask, Signe Christensen-Dalsgaard, Sebastien Descamps, Ingeborg Hallanger, Sveinn Are Hanssen, Magdalene Langset, Laura Monclús, Nina O’Hanlon, ...

    • SEAPOP studies in the Barents and Norwegian Seas in 2007 

      Anker-Nilssen, Tycho; Barrett, Robert T; Bustnes, J.O.; Christensen-Dalsgaard, Signe; Erikstad, K.E.; Fauchald, Per; Lorentsen, Svein-Håkon; Steen, Harald; Strøm, H.; Systad, Geir Helge; Tveraa, Torkild (NINA Rapport;363, Research report, 2008)
      Anker-Nilssen, T. (ed.), Barrett, R.T., Bustnes, J.O., Christensen-Dalsgaard, S., Erikstad, K.E., Fauchald, P., Lorentsen, S.-H., Steen, H., Strøm, H., Systad, G.H. & Tveraa, T. 2008. SEAPOP studies in the Barents and ...

    • SEAPOP studies in the Lofoten and Barents Sea area in 2005 

      Anker-Nilssen, Tycho; Barrett, Robert T; Bustnes, Jan Ove; Erikstad, Kjell E; Fauchald, Per; Lorentsen, Svein Håkon; Steen, Harald; Strøm, Hallvard; Systad, Geir Helge Rødli; Tveraa, Torkild (NINA Rapport;127, Research report, 2006)
      Anker-Nilssen, T., Barrett, R.T., Bustnes, J.O., Erikstad, K.E., Fauchald, P., Lorentsen, S.-H., Steen, H., Strøm, H., Systad, G.H. & Tveraa, T. 2006. SEAPOP studies in the Lofoten and Barents Sea area in 2005. - NINA ...