• A probabilistic algorithm to process geolocation data 

      Merkel, Benjamin; Phillips, Richard A.; Descamps, Sébastien; Yoccoz, Nigel Gilles; Moe, Børge; Strøm, Hallvard (Journal article; Peer reviewed, 2016)
      Background: The use of light level loggers (geolocators) to understand movements and distributions in terrestrial and marine vertebrates, particularly during the non-breeding period, has increased dramatically in recent ...
    • Arctic-breeding seabirds’ hotspots in space and time - A methodological framework for year-round modelling of environmental niche and abundance using light-logger data 

      Fauchald, Per; Tarroux, Arnaud; Bråthen, Vegard Sandøy; Descamps, Sebastien; Ekker, Morten; Helgason, Hálfdán Helgi; Merkel, Benjamin; Moe, Børge; Åström, Jens; Strøm, Hallvard (NINA Rapport;1657, Research report, 2019)
      Fauchald, P., Tarroux, A., Bråthen, V. S., Descamps, S., Ekker, M., Helgason, H. H., Merkel, B., Moe, B., Åström, J., Strøm, H. 2019. Arctic-breeding seabirds’ hotspots in space and time -a methodological framework for ...
    • An automated procedure (v2.0) to obtain positions from light-level geolocators in large-scale tracking of seabirds. A method description for the SEATRACK project 

      Bråthen, Vegard Sandøy; Moe, Børge; Amélineau, Françoise; Ekker, Morten; Fauchald, Per; Helgason, Hálfdán Helgi; Johansen, Malin Kjellstadli; Merkel, Benjamin; Tarroux, Arnaud; Åström, Jens; Strøm, Hallvard (NINA Report;1893, Research report, 2021)
      Bråthen, V.S., Moe, B., Amélineau, F., Ekker, M., Fauchald, P.,Helgason, H.H., Johansen, M. K., Merkel, B., Tarroux, A., Åström, J. & Strøm, H. 2021. An automated procedure (v2.0) to obtain positions from light-level ...
    • Bestandsanslag av hekkende og mytende fugl i Bellsundområdet 

      Hanssen, Sveinn Are; Strøm, Hallvard; Descamps, Sebastian; Moe, Børge (NINA rapport;1020, Research report, 2014)
      Ved oppstart av gruvedrift i Lunckefjell ble det i tillatelsen fra Miljøverndepartementet stilt visse vilkår til Store Norske Spitsbergen Grubekompani (SNSG). I disse vilkårene inngikk blant annet et bestandsanslag av (1) ...
    • Contrasting Spatial and Seasonal Trends of Methylmercury Exposure Pathways of Arctic Seabirds: Combination of Large-Scale Tracking and Stable Isotopic Approaches 

      Renedo, Marina; Amouroux, David; Albert, Céline; Bérail, Sylvain; Bråthen, Vegard Sandøy; Gavrilo, Maria; Grémillet, David; Helgason, Hálfdán H.; Jakubas, Dariusz; Mosbech, Anders; Strøm, Hallvard; Tessier, Emmanuel; Wojczulanis-Jakubas, Katarzyna; Bustamante, Paco; Fort, Jérôme (Peer reviewed; Journal article, 2020)
      Despite the limited direct anthropogenic mercury (Hg) inputs in the circumpolar Arctic, elevated concentrations of methylmercury (MeHg) are accumulated in Arctic marine biota. However, the MeHg production and bioaccumulation ...
    • 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 ...
    • 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. ...
    • Erfaringer fra kartlegging og overvåking av sjøfugler ved leteboring i Barentshavet 2014 

      Follestad, Arne; Fauchald, Per; Erikstad, Kjell Einar; Strøm, Hallvard (NINA rapport;1175, Research report, 2015-11-11)
      Westergaard, K.B., Hanssen, O., Endrestøl, A., Often, A., Stabbetorp, O., Staverløkk, A. & Ødegaard, F. 2015. Spredning av fremmede arter med planteimport til Norge – NINA Rapport 1136. 105 s. Sommeren 2014 fikk Statoil, ...
    • Identifisering av viktige områder for sjøfugl i norske havområder - innspill til forvaltningsplanarbeidet 2018 

      Systad, Geir Helhe Rødli; Fauchald, Per; Deschamps, Sebastian; Christensen-Dalsgaard, Signe; Strøm, Hallvard; Tarroux, Arnaud (NINA Rapport;1627, Research report, 2019)
      Systad, G.H.R., Fauchald, P., Descamps, S., Christensen-Dalsgaard, S., Strøm, H. & Tarroux, A. 2019. Identifisering av viktige områder for sjøfugl i norske havområder – innspill til forvaltningsplanarbeidet 2019. NINA ...
    • Individual migration strategy fidelity but no habitat specialization in two congeneric seabirds 

      Merkel, Benjamin; Descamps, Sebastien; Yoccoz, Nigel; Grémillet, David; Daunt, Francis; Erikstad, Kjell E; Ezhov, Aleksey V.; Harris, Mike P.; Gavrilo, Maria; Lorentsen, Svein Håkon; Reiertsen, Tone Kristin; Steen, Harald; Systad, Geir Helge Rødli; Þórarinsson, Þorkell Lindberg; Wanless, Sarah; Strøm, Hallvard (Peer reviewed; Journal article, 2020)
      Abstract Aim: In migratory species, individuals often use fixed and individual-specific migration strategies, which we term individual migration strategy fidelity (IMSF). Our goal was to test if guillemots have flexible ...
    • Kunnskapsstatus Barentshavet sør. Sjøfugl i våre nordlige havområder 

      Systad, Geir Helge; Strøm, Hallvard (NINA Rapport;877, Research report, 2012)
      Denne rapporten tar for seg kunnskapsstatus for sjøfugl i det sørlige Barentshavet, både i norsk og russisk sektor. Etter at SEAPOP ble etablert har kunnskapen om fordeling av sjøfugl i dette området blitt kraftig forbedret, ...
    • 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 ...
    • Modellering av svømmetrekket til lomvi (Uria aalge) fra Bjørnøya til norskekysten. Utvikling av ny metodikk for bruk av lysloggere (GLS),dykkeloggere (TDR) og sjøtemperaturer (SST) til kartlegging av svømmetrekket hos alkefugl 

      Erikstad, Kjell Einar; Benjaminsen, Sigurd; Reiertsen, Tone Kristin; Ballestros, Manuel; Strøm, Hallvard (NINA Rapport;1546, Research report, 2018)
      Erikstad, K.E., Benjaminsen, S., Reiertsen, T.K, Ballesteros, M. & Strøm, H. 2018. Modellering av svømmetrekket til lomvi (Uria aalge) fra Bjørnøya til norskekysten. Utvikling av ny metodikk for bruk av lysloggere ...
    • Moult location and diet of auks in the North Sea inferred from coupled light-based and isotope-based geolocation 

      Glew, Katie St. John; Wanless, Sarah; Harris, Michael P.; Daunt, Francis; Erikstad, Kjell E; Strøm, Hallvard; Trueman, Clive N. (Journal article; Peer reviewed, 2018)
      Many pelagic seabirds moult their feathers while at sea, which is an energetically costly behaviour. Mortality rates during moult can be high, so spatial and trophic ecology during this critical period is important for ...
    • 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, ...
    • Multiple Stressors in a Top Predator Seabird:Potential Ecological Consequences ofEnvironmental Contaminants, PopulationHealth and Breeding Conditions 

      Bustnes, Jan Ove; Bourgeon, Sophie; Leat, Eliza H. K.; Magnusdottir, Ellen; Strøm, Hallvard; Hanssen, Sveinn Are; Petersen, Aevar; Gabrielsen, Geir W.; Furness, Robert W. (Peer reviewed, 2015)
      Environmental contaminants may have impacts on reproduction and survival in wildlife populations suffering from multiple stressors. This study examined whether adverse effects of persistent organic pollutants (POPs) ...
    • Open Access Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea 

      St.John Glew, Katie; Wanless, Sarah; Harris, Michael P.; Daunt, Francis; Erikstad, Kjell Einar; Strøm, Hallvard; Speakman, John R.; Kürten, Benjamin; Trueman, Clive N. (Movement Ecology;, Peer reviewed, 2019)
      Background: Natural environments are dynamic systems with conditions varying across years. Higher trophic Level consumers may respond to changes in the distribution and quality of available prey by moving to locate New ...
    • A risk assessment of the effects of mercury on Baltic Sea, Greater North Sea and North Atlantic wildlife, fish and bivalves 

      Dietz, Rune; Fort, Jérôme; Sonne, Christian; Albert, Céline; Bustnes, Jan Ove; Christensen, Thomas Kjær; Ciesielski, Tomasz Maciej; Danielsen, Jóhannis; Dastnai, Sam; Eens, Marcel; Erikstad, Kjell E; Galatius, Anders; Garbus, Svend-Erik; Gilg, Oliver; Hanssen, Sveinn Are; Helander, Björn; Helberg, Morten; Jaspers, Veerle; Jenssen, Bjørn Munro; Jónsson, Jón Einar; Kauhala, Kaarina; Kolbeinsson, Yann; Kyhn, Line A.; Labansen, Aili Lage; Larsen, Martin M.; Lindstrøm, Ulf; Reiertsen, Tone Kristin; Rigét, Frank F.; Roos, Anna; Strand, Jakob; Strøm, Hallvard; Søndergaard, Jens; Sun, Jiachen; Teilmann, Jonas; Therkildsen, Ole Roland; Thórarinsson, Thorkell Lindberg; Tjørnløv, Rune Skjold; Wilson, Simon; Eulaers, Igor (Peer reviewed; Journal article, 2020)
      A wide range of species, including marine mammals, seabirds, birds of prey, fish and bivalves, were investigated for potential population health risks resulting from contemporary (post 2000) mercury (Hg) exposure, using ...
    • 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 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 ...