Blar i forfatter Norges arktiske universitetsmuseum "Strøm, H."

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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; Tidsskriftartikkel; Peer reviewed, 2017-04-07)
      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 organisms to abrupt warming and associated regime shifts can be unlike responses to periods of slow or moderate change. Understanding of nonlinearity in the biological responses to ...

    • Levedyktighetsanalyser for norske lomvibestander 

      Erikstad, K.E.; Reiertsen, T.K.; Anker-Nilssen, Tycho; Barrett, Robert T.; Lorentsen, Svein-Håkon; Strøm, H.; Systad, G.H. (Research report; Forskningsrapport, 2007-03)
      Hekkebestandene av lomvi (Uria aalge) langs norskekysten har hatt en sterk nedgang i løpet av de siste 45 årene. Den norske fastlandsbestanden utgjør i dag ikke mer enn ca 15 000 par, mens den til sammenligning ble beregnet til 120-160 000 par i begynnelsen av 1960-årene. Den største bestanden i norske områder finnes i dag på Bjørnøya hvor det hekker ca 100 000 par, men også her er bestanden ...

    • Multicolony tracking reveals the winter distribution of a pelagic seabird on an ocean basin scale 

      Frederiksen, Morten; Moe, Børge; Daunt, Francis; Phillips, Richard A.; Barrett, Robert; Bogdanova, Maria I; Boulinier, Thierry; Chardine, John W; Chastel, Olivier; Chivers, Lorraine S; Christensen-Dalsgaard, Signe; Clémet-Chastel, Céline; Colhoun, Kendrew; Freeman, Robin; Gaston, Anthony J; González-Solís, Jacob; Goutte, Aurélie; Grémillet, David; Guilford, Tim; Jensen, Gitte H; Krasnov, Yuri V.; Lorentsen, Svein-Håkon; Mallory, Mark L; Newell, Mark; Olsen, Bergur; Shaw, Deryk; Steen, Harald; Strøm, H.; Systad, Geir Helge; Thórarinsson, Thorkell L; Anker-Nilssen, Tycho (Journal article; Tidsskriftartikkel; Peer reviewed, 2011-11-26)
      Aim An understanding of the non-breeding distribution and ecology of migratory species is necessary for successful conservation. Many seabirds spend the nonbreeding season far from land, and information on their distribution during this time is very limited. The black-legged kittiwake, Rissa tridactyla, is a widespread and numerous seabird in the North Atlantic and Pacific, but breeding ...

    • On the polar edge: the status of the northern gannet (Morus bassanus) in the Barents Sea in 2015-2016. 

      Barrett, Robert T.; Strøm, H.; Melnikov, Mikhail (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-27)
      During its population recovery in the North Atlantic in the early 1900s, the northern gannet (Morus bassanus) established its first colony in Norway at Runde in 1946. Since the 1960s, gannets have established (and later abandoned) several small colonies in the north of the country. These colonies have been regularly monitored, and in 2015–16 ca. 3300 apparently occupied nests (AON) were counted ...

    • 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 (Research report; Forskningsrapport, 2008-04)
      This is the third annual report of the SEAPOP programme, which was initiated in 2005. In 2007, the work continued at full scale in the Lofoten-Barents Sea area, and similar studies were initiated in the southern part of the Norwegian Sea. The report is divided into three sections. The first is an executive summary, the second presents five selected highlights from the studies in 2007, whereas the ...

    • SEAPOP. Et nasjonalt sjøfuglprogram for styrket beslutningsstøtte i marine områder 

      Anker-Nilssen, Tycho; Bustnes, J.O.; Erikstad, K.E.; Lorentsen, Svein-Håkon; Tveraa, T.; Strøm, H.; Barrett, Robert T. (Research report; Forskningsrapport, 2005-01)
      SEAPOP (Seabird population management and petroleum operations) er et nasjonalt, kunnskapsoppbyggende program om sjøfugl tilrettelagt for å gi styrket beslutningsstøtte for marine områder. Konseptet ble først utviklet for oljeindustrien i et samarbeid mellom Norsk institutt for naturforskning (NINA) og Den norske stats oljeselskap as (Statoil), men er senere videreutviklet i samarbeid med Norsk ...