• Black-legged kittiwakes as messengers of Atlantification in the Arctic 

      Vihtakari, Mikko; Welcker, Jorg; Moe, Børge; Chastel, Olivier; Tartu, Sabrina; Hop, Haakon; Bech, Claus; Descamps, Sébastien; Gabrielsen, Geir W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-19)
      Climate warming is rapidly altering marine ecosystems towards a more temperate state on the European side of the Arctic. However, this “Atlantification” has rarely been confirmed, as long-term datasets on Arctic marine organisms are scarce. We present a 19-year time series (1982–2016) of diet samples from black-legged kittiwakes as an indicator of the changes in a high Arctic marine ecosystem ...
    • Feeding at the front line: Interannual variation in the use of glacier fronts by foraging black-legged kittiwakes 

      Bertrand, Philip; Strøm, Hallvard; Bêty, Joël; Steen, Harald; Kohler, Jack; Vihtakari, Mikko; Van Pelt, Ward; Yoccoz, Nigel Gilles; Hop, Haakon; Harris, Stephanie M.; Patrick, Samantha C.; Assmy, Philipp; Wold, Anette; Duarte, Pedro; Moholdt, Geir; Descamps, Sébastien (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-28)
      Tidewater glacier fronts can represent important foraging areas for Arctic predators. Their ecological importance is likely to change in a warmer Arctic. Their profitability and use by consumers are expected to vary in time, but the underlying mechanisms driving such variation remain poorly known. The subglacial plume, originating from meltwater discharge, is responsible for the entrainment and ...
    • Fine-scale spatial segregation in a pelagic seabird driven by differential use of tidewater glacier fronts 

      Bertrand, Philip; Bêty, Joël; Yoccoz, Nigel G.; Fortin, Marie-Josée; Strøm, Hallvard; Steen, Harald; Kohler, Jack; Harris, Stephanie M.; Patrick, Samantha C.; Chastel, Olivier; Blévin, P.; Hop, Haakon; Moholdt, Geir; Maton, Joséphine; Descamps, Sébastien (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-11)
      In colonially breeding marine predators, individual movements and colonial segregation are influenced by seascape characteristics. Tidewater glacier fronts are important features of the Arctic seascape and are often described as foraging hotspots. Albeit their documented importance for wildlife, little is known about their structuring effect on Arctic predator movements and space use. In this study, ...
    • 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; Lescroël, Amélie; Lorentsen, Svein-Håkon; Lyver, Phil O’B.; Mallory, Mark; Moe, Børge; Montevecchi, William A.; Monticelli, David; Mostello, Carolyn; Newell, Mark; Nicholson, Lisa; Nisbet, Ian; Olsson, Olof; Oro, Daniel; Pattison, Vivian; Poisbleau, Maud; Pyk, Tanya; Quintana, Flavio; Ramos, Jaime A.; Ramos, Raül; Reiertsen, Tone Kirstin; Rodríguez, Cristina; Ryan, Peter; Sanz-Aguilar, Ana; Schmidt, Niels M.; Shannon, Paula; Sittler, Benoit; Southwell, Colin; Surman, Christopher; Svagelj, Walter S.; Trivelpiece, Wayne; Warzybok, Pete; Watanuki, Yutaka; Weimerskirch, Henri; Wilson, Peter R.; Wood, Andrew G.; Philimore, Albert B.; Lewis, Sue (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-02)
      Reproductive timing in many taxa plays a key role in determining breeding productivity, and is often sensitive to climatic conditions. Current climate change may alter the timing of breeding at different rates across trophic levels, potentially resulting in temporal mismatch between the resource requirements of predators and their prey. This is of particular concern for higher-trophic-level organisms, ...
    • Influence of reproductive output on divorce rates in polar seabirds 

      Mercier, Guillaume; Yoccoz, Nigel; Descamps, Sébastien (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-15)
      The high occurrence of social monogamy in birds has led to questions about partner fidelity, or the perennial nature of monogamy from one breeding season to another. Despite the evolutionary advantages of partner fidelity, divorce occurs among 95% of bird species. We aimed to describe patterns of divorce and partner fidelity in five seabird species breeding in Arctic and Antarctic regions and ...
    • 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 (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-28)
      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 to have evolved, and can be used to explore drivers of timing strategies across species’ distribution ranges. This study compares the timing of egg hatching in four seabird ...
    • A probabilistic algorithm to process geolocation data 

      Merkel, Benjamin; Phillips, Richard A.; Descamps, Sébastien; Yoccoz, Nigel Gilles; Moe, Børge; Strøm, Hallvard (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-18)
      <p><i>Background: </i>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 years. However, inferring positions from light data is not straightforward, often relies on assumptions that are difficult to test, or includes an element of subjectivity ...
    • The retrospective analysis of antarctic tracking data project 

      Ropert-Coudert, Yan; Van de Putte, Anton P.; Reisinger, Ryan R.; Bornemann, Horst; Charrassin, Jean-Benoî; Costa, Daniel P.; Danis, Bruno; Hückstädt, Luis A.; Jonsen, Ian D.; Lea, Mary-Anne; Thompson, David; Torres, Leigh G.; Trathan, Philip N.; Wotherspoon, Simon; Ainley, David G.; Alderman, Rachael; Andrews-Goff, Virginia; Arthur, Ben; Ballard, Grant; Bengtson, John; Bester, Marthán N; Blix, Arnoldus Schytte; Boehme, Lars; Bost, Charles-André; Boveng, Peter; Cleeland, Jaimie; Constantine, Rochelle; Crawford, Robert J. M.; Rosa, Luciano Dalla; de Bruyn, P. J. Nico; Delord, Karine; Descamps, Sébastien; Double, Mike; Emmerson, Louise; Fedak, Mike; Friedlaender, Ari; Gales, Nick; Goebel, Mike; Goetz, Kimberly T.; Guinet, Christophe; Goldsworthy, Simon D.; Harcourt, Rob; Hinke, Jefferson T.; Jerosch, Kerstin; Kato, Akiko; Kerry, Knowles R.; Kirkwood, Roger; Kooyman, Gerald L.; Kovacs, Kit M.; Lawton, Kieran; Lowther, Andrew D.; Lydersen, Christian; Lyver, Phil O’B.; Makhado, Azwianewi B.; Márquez, Maria E. I.; McDonald, Birgitte I.; McMahon, Clive R.; Muelbert, Monica; Nachtsheim, Dominik; Nicholls, Keith W.; Nordøy, Erling S.; Olmastroni, Silvia; Phillips, Richard A.; Pistorius, Pierre; Plötz, Joachim; Pütz, Klemens; Ratcliffe, Norman; Ryan, Peter G.; Santos, Mercedes; Southwell, Colin; Staniland, Iain; Takahashi, Akinori; Tarroux, Arnaud; Trivelpiece, Wayne; Wakefeld, Ewan; Weimerskirch, Henri; Wienecke, Barbara; Xavier, José C.; Raymond, Ben; Hindell, Mark A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-18)
      The Retrospective Analysis of Antarctic Tracking Data (RAATD) is a Scientific Committee for Antarctic Research project led jointly by the Expert Groups on Birds and Marine Mammals and Antarctic Biodiversity Informatics, and endorsed by the Commission for the Conservation of Antarctic Marine Living Resources. RAATD consolidated tracking data for multiple species of Antarctic meso- and top-predators ...