• Assessing incidental bycatch of seabirds in Norwegian coastal commercial fisheries: Empirical and methodological lessons 

      Fangel, Kirstin; Aas, Øystein; Vølstad, Jon Helge; Bærum, Kim Magnus; Christensen-Dalsgaard, Signe; Nedreaas, Kjell Harald; Overvik, Modolf; Wold, Line Camilla; Anker-Nilssen, Tycho (Peer reviewed, 2015)
      With diminishing seabird populations and little knowledge on incidental bycatch in fisheries in the Northeast Atlantic, this study aimed to screen seabird bycatch in Norwegian coastal fisheries in 2009. The purpose was ...
    • Atlantic Puffin Fratercula arctica fishing in a freshwater lake to feed its chick 

      Anker-Nilssen, Tycho; Bangjord, Georg (Peer reviewed; Journal article, 2021)
      We present details for the observation of an adult Atlantic Puffin Fratercula arctica collecting food in Lake Linnévatnet (78°02’N 13°48’E), the second largest freshwater lake in the Svalbard archipelago, on 11 August 2020. ...
    • Bifangst av sjøfugl i norske fiskerier - eksisterende kunnskap og forslag til kartleggingsprosjekt 

      Christensen-Dalsgaard, Signe; Fangel, Kirstin; Dervo, Børre Kind; Anker-Nilssen, Tycho (NINA Rapport;382, Research report, 2008)
      Christensen-Dalsgaard, S., Fangel, K., Dervo, B.K. & Anker-Nilssen, T. 2008. Bifangst av sjøfugl i norske fiskerier - eksisterende kunnskap og forslag til kartleggingsprosjekt. – NINA Rapport 382. 62 s. Formålet med denne ...
    • Bifangst av sjøfugl i norske kystfiskerier. Et kartleggings- og metodeutprøvingsprosjekt med fokus på fiske med garn og line 

      Fangel, Kirstin; Wold, Line Camilla; Aas, Øystein; Christensen-Dalsgaard, Signe; Qvenild, Marte; Anker-Nilssen, Tycho (NINA rapport;719, Research report, 2011)
      Fangel, K., Wold, L.C, Aas, Ø., Christensen-Dalsgaard, S., Qvenild, M. & Anker-Nilssen, T. 2011. Bifangst av sjøfugl i norske kystfiskerier. Et kartleggings- og metodeutprøvingsprosjekt med fokus på fiske med garn og ...
    • 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 ...
    • Diverging phenological responses of Arctic seabirds to an earlier spring 

      Descamps, Sébastien; Ramírez, Francisco; Benjaminsen, Sigurd; Anker-Nilssen, Tycho; Barrett, Robert; Burr, Zofia; Christensen-Dalsgaard, Signe; Erikstad, Kjell-Einar; Irons, David B.; Lorentsen, Svein-Håkon; Mallory, Mark L.; Robertson, Gregory J.; Reiertsen, Tone Kristin; Strøm, Hallvard; Varpe, Øystein; Lavergne, Sébastien (Peer reviewed, 2019)
      The timing of annual events such as reproduction is a critical component of how free‐living organisms respond to ongoing climate change. This may be especially true in the Arctic, which is disproportionally impacted by ...
    • Dødsårsak og opprinnelse for alkefugler som strandet på Rogalandskysten i februar 2003 

      Aarvak, Tomas; Anker-Nilssen, Tycho (NINA Rapport;95, Research report, 2005)
      Aarvak, T. & Anker-Nilssen, T. 2005. Dødsårsak og opprinnelse for alkefugler som strandet på Rogalandskysten i februar 2003. – NINA Rapport 95. Etter en episode med massedød av sjøfugler tidlig i februar 2003 på kysten ...
    • Effekter av akutte bestandsreduksjoner hos sjøfugl knyttet til Lofoten, Vesterålen og Barentshavet 

      Reiertsen, Tone Kristin; Erikstad, Kjell Einar; Johansen, Malin Kjellstadli; Sandvik, Hanno; Anker-Nilssen, Tycho; Barrett, Rob; Christensen-Dalsgaard, Signe; Lorentsen, Svein-Håkon; Strøm, Hallvard; Systad, Geir (NINA Rapport;1547, Research report, 2019)
      Flere sjøfuglarter går tilbake globalt blant annet pga. klimaendringer. Det er derfor viktig å av-dekke tilleggseffekter av ytterligere påvirkninger, som for eksempel oljesøl. Oljesøl kan føre til massedød blant sjøfugl. ...
    • Fit is fat: winter body mass of Atlantic Puffins Fratercula arctica 

      Anker-Nilssen, Tycho; Harris, Michael P.; Jensen, Jens-Kjeld (Journal article; Peer reviewed, 2018)
      Capsule: Atlantic Puffins Fratercula arctica from Scottish and Norwegian populations were significantly heavier in winter than when rearing chicks. Aims: To compare body masses of Atlantic Puffins on their wintering grounds ...
    • Forage fish abundance is a predictor of timing of breeding and hatching brood size in a coastal seabird 

      Lorentsen, Svein-Håkon; Anker-Nilssen, Tycho; Erikstad, Kjell E; Røv, Nils (Journal article; Peer reviewed, 2015)
      Current and future climate alterations might impact ecological processes like timing of breeding. We used multivariate linear models to assess the importance of food availability and climate on timing of breeding and ...
    • Forebyggende tiltak mot bifangst av sjøfugl i norske fiskerier 

      Bærum, Kim Magnus; Christensen-Dalsgaard, Signe; Anker-Nilssen, Tycho (NINA Temahefte;82, Book, 2021)
    • Global phenological insensitivity to shifting ocean temperatures among seabirds 

      Keogan, Katharine; Daunt, Francis; Wanless, Sarah; Phillips, Richard A.; Walling, Craig A.; Agnew, Philippa; Ainley, David G.; Anker-Nilssen, Tycho; Ballard, Grant; Barrett, Robert T; Barton, Kerry J.; Bech, Claus; Becker, Peter; Berglund, Per-Arvid; Bollache, Loïc; Bond, Alexander L.; Bouwhuis, Sandra; Bradley, Russell W.; Burr, Zofia; Camphuysen, Kees; Catry, Paulo; Chiaradia, Andre; Christensen-Dalsgaard, Signe; Cuthbert, Richard; Dehnhard, Nina; Descamps, Sébastien; Diamond, Tony; Divoky, George; Drummond, Hugh; Dugger, Katie M.; Dunn, Michael J.; Emmerson, Louise; Erikstad, Kjell Einar; Fort, Jérôme; Fraser, William; Genovart, Meritxell; Gilg, Olivier; González-Solís, Jacob; Granadeiro, José Pedro; Grémillet, David; Hansen, Jannik; Hanssen, Sveinn Are; Harris, Mike; Hedd, April; Hinke, Jefferson; Igual, José Manuel; Jahncke, Jaime; Jones, Ian; Kappes, Peter J.; Lang, Johannes; Langset, Magdalene; Lorentsen, Svein Håkon; Moe, Børge; Reiertsen, Tone (Journal article; Peer reviewed, 2018)
      Reproductive timing in many taxa plays a key role in determining breeding productivity1, and is often sensitive to climatic conditions2. Current climate change may alter the timing of breeding at different rates across ...
    • Global population and conservation status of the Great Black-backed Gull Larus marinus 

      Langlois Lopez, Samuel; Bond, Alexander L.; O'Hanlon, Nina J.; Wilson, Jared M.; Vitz, Andrew; Mostello, Carolyn S.; Hamilton, Frederick; Rail, Jean-Francois; Welch, Linda; Boettcher, Ruth; Wilhelm, Sabina I.; Anker-Nilssen, Tycho; Daunt, Francis; Masden, Elizabeth (Peer reviewed; Journal article, 2022)
      The Great Black-backed Gull Larus marinus is a generalist species that inhabits temperate and arctic coasts of the north Atlantic Ocean. In recent years, there has been growing concern about population declines at local ...
    • Later at higher latitudes: large-scale variability in seabird breeding timing and synchronicity 

      Burr, Zofia M.; Varpe, Øystein; Anker-Nilssen, Tycho; Erikstad, Kjell E; Descamps, Sébastien; Barrett, Robert T; Bech, Claus; Christensen-Dalsgaard, Signe; Lorentsen, Svein-Håkon; Moe, Børge; Reiertsen, Tone Kristin; Strøm, Hallvard (Peer reviewed, 2016)
      In seasonal environments, organisms are expected to optimally schedule reproduction within an annual range of environmental conditions. Latitudinal gradients generate a range of seasonality to which we can expect adaptations ...
    • Levedyktighetsanalyser for norske lomvibestander 

      Erikstad, K.E.; Reiertsen, T.K.; Anker-Nilssen, Tycho; Barrett, Robert T; Lorentsen, Svein-Håkon; Strøm, H.; Systad, G.H. (NINA Rapport;240, Research report, 2007)
      Erikstad, K.E, Reiertsen, T.K., Anker-Nilssen, T., Barrett, R.T., Lorentsen, S.-H., Strøm, H. og Systad, G.H. 2007. Levedyktighetsanalyser for norske lomvibestander. NINA Rappport 240, 25 s. Hekkebestandene av lomvi (Uria ...
    • 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 ...
    • 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, 2016)
    • 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 ...