Now showing items 898-917 of 1342

    • Ocean predation and mortality of adult Atlantic salmon 

      Strøm, John Fredrik; Rikardsen, Audun; Campana, Steven E.; Righton, David; Carr, Jonathan; Aarestrup, Kim; Stokesbury, Michael J.W.; Gargan, Patrick; Caballero Javierre, Pablo; Thorstad, Eva B. (Peer reviewed; Journal article, 2019)
    • 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 ...
    • Omfattende spredning og bekjempelse av gjedde i Trøndelag 

      Hesthagen, Trygve H.; Rikstad, Anton; Adolfsen, Pål; Sandlund, Odd Terje; Bardal, Helge; Bergan, Morten Andre; Berger, Hans Mack; Finstad, Anders Gravbrøt; Olsen, Kay-Arne; Nøst, Terje; Sandodden, Roar; Sivertsgård, Rolf; Slettom, Lars (Journal article, 2020)
      I Trøndelag er gjedda naturlig utbredt bare i Murusjøen i Muruelvvassdraget i nordøst og i noen lokaliteter i Trysilelvvassdraget i sør. Helt siden middelalderen har mennesker spredt gjedde i fylket, men spesielt i løpet ...
    • On fitness and partial migration in a large herbivore – migratory moose have higher reproductive performance than residents 

      Rolandsen, Christer Moe; Solberg, Erling Johan; Sæther, Bernt-Erik; Van Moorter, Bram; Herfindal, Ivar; Bjørneraas, Kari (Journal article; Peer reviewed, 2016)
      Partially migratory populations comprise both resident and migratory individuals. Th ese tactics may coexist if their demographic contribution to future generations (i.e. fitness) are equal or vary temporally with environmental ...
    • On some Entoloma species (Tricholomatinae, Basidiomycota) little known or new to Norway 

      Brandrud, Tor Erik; Bendiksen, Egil; Jordal, John Bjarne; Weholt, Øyvind; Dima, Bálint; Morozova, Olga; Noordeloos, Machiel E. (Journal article, 2020)
      This is the second paper reporting major results from the Norwegian Entoloma project 2015- 2017. Here we present species that are new to Norway or little known, from the following smaller clades: Caeruleopolitum, Claudopus, ...
    • On the relevance of animal behavior to the management and conservation of fishes and fisheries 

      Cooke, Steven J.; Auld, Heather L.; Birnie-Gauvin, Kim; Elvidge, Chris K.; Piczak, Morgan L.; Twardek, William M.; Raby, Graham D.; Brownscombe, Jacob W.; Midwood, Jonathan D.; Lennox, Robert; Madliger, Christine; Wilson, Alexander D. M.; Binder, Thomas R.; Schreck, Carl B.; McLaughlin, Robert L.; Grant, James; Muir, Andrew M. (Peer reviewed; Journal article, 2022)
      There are many syntheses on the role of animal behavior in understanding and mitigating conservation threats for wildlife. That body of work has inspired the development of a new discipline called conservation behavior. ...
    • One Hundred Pressing Questions on the Future of Global Fish Migration Science, Conservation, and Policy 

      Lennox, Robert J.; Paukert, Craig P.; Aarestrup, Kim; Auger-Méthé, Marie; Baumgartner, Lee; Birnie-Gauvin, Kim; Bøe, Kristin; Brink, Kerry; Brownscombe, Jacob W.; Chen, Yushun; Davidsen, Jan Grimsrud; Eliason, Erika J.; Filous, Alexander; Gillanders, Bronwyn M.; Helland, Ingeborg Palm; Horodysky, Andrij Z.; Januchowski-Hartley, Stephanie R.; Lowerre-Barbieri, Susan K.; Lucas, Martyn C.; Martins, Eduardo G.; Murchie, Karen J.; Pompeu, Paulo S.; Power, Michael; Raghavan, Rajeev; Rahel, Frank J.; Secor, David; Thiem, Jason D.; Thorstad, Eva Bonsak; Ueda, Hiroshi; Whoriskey, Frederick G.; Cooke, Steven J. (Journal article; Peer reviewed, 2019)
      Migration is a widespread but highly diverse component of many animal life histories. Fish migrate throughout the world’s oceans, within lakes and rivers, and between the two realms, transporting matter, energy, and other ...
    • Ongoing niche differentiation under high gene flow in a polymorphic brackish water threespine stickleback (Gasterosteus aculeatus) population 

      Østbye, Kjartan; Taugbøl, Annette; Ravinet, Mark; Harrod, Chris; Pettersen, Ruben Alexander; Bernatchez, Louis (Journal article; Peer reviewed, 2018)
      Background: Marine threespine sticklebacks colonized and adapted to brackish and freshwater environments since the last Pleistocene glacial. Throughout the Holarctic, three lateral plate morphs are observed; the low, partial ...
    • 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; Journal article, 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 ...
    • OpenStreetMap history for intrinsic quality assessment: Is OSM up-to-date? 

      Minghini, Marco; Frassinelli, Francesco (Peer reviewed; Journal article, 2019)
      OpenStreetMap (OSM) is a well-known crowdsourcing project which aims to create a geospatial database of the whole world. Intrinsic approaches based on the analysis of the history of data, i.e. its evolution over time, have ...
    • Operationalising ecosystem service assessment in Bayesian Belief Networks: experiences within the OpenNESS project 

      Smith, Ron I.; Barton, David Nicholas; Dick, Jan; Haines-Young, Roy; Madsen, Anders L.; Rusch, Graciela; Termansen, Mette; Woods, Helen; Carvalho, Laurence; Giucă, Relu Constantin; Luque, Sandra; Odee, David; Rusch, Veronica E.; Saarikoski, Heli; Adamescu, Cristian Mihai; Dunford, Robert; Ochieng, John; Gonzalez-Redino, Julen; Stange, Erik; Vădineanuh, Angheluță; Verweijq, Peter; Vikström, Suvi (Journal article; Peer reviewed, 2017)
      Nine Bayesian Belief Networks (BBNs) were developed within the OpenNESS project specifically for modelling ecosystem services for case study applications. The novelty of the method, its ability to explore problems, to ...
    • Optimal size at seaward migration in an anadromous salmonid 

      Jonsson, Bror; Jonsson, Marius; Jonsson, Nina (Journal article; Peer reviewed, 2016)
      In this study, the probabilistic reaction norm was calculated for length at different ages of smolting before seaward migration of Atlantic salmon Salmo salar spawning in the Norwegian River Imsa. The reaction norm was ...
    • Optimal timing of return migration in Atlantic salmon 

      Foldvik, Anders; Ulvan, Eva Marita; Næsje, Tor (Peer reviewed; Journal article, 2024)
      In many populations of Atlantic salmon, individuals return to rivers months or even a year prior to spawning. This premature arrival in fresh water by far exceeds the time needed for upstream migrations to spawning areas. ...
    • Optimization of dynamic soaring in a flap-gliding seabird affects its large-scale distribution at sea 

      Kempton, James A.; Wynn, Joe; Bond, Sarah; Evry, James; Fayet, Annette L.; Gillies, Natasha; Guilford, Tim; Kavelaars, Marwa; Juarez-Martinez, Ignacio; Padget, Oliver; Rutz, Christian; Shoji, Akiko; Syposz, Martyna; Taylor, Graham K. (Peer reviewed; Journal article, 2022)
      Dynamic soaring harvests energy from a spatiotemporal wind gradient, allowing albatrosses to glide over vast distances. However, its use is challenging to demonstrate empirically and has yet to be confirmed in other seabirds. ...
    • Organochlorines, perfluoroalkyl substances, mercury, and egg incubation temperature in an Arctic seabird: Insights from data loggers 

      Blévin, Pierre; Schaffer, Scott A.; Bustamante, Paco; Angelier, Frédéric; Picard, Baptiste; Herzke, Dorte; Moe, Børge; Gabrielsen, Geir Wing; Bustnes, Jan Ove; Chastel, Olivier (Journal article, 2018)
      In birds, incubation‐related behaviors and brood patch formation are influenced by hormonal regulation such as prolactin secretion. Brood patch provides efficient heat transfer between the incubating parent and the developing ...
    • Osteochondrosis, but not lameness, is more frequent among free-range pigs than confined herd-mates 

      Etterlin, Pernille Engelsen; Morrison, David A.; Österberg, Julia; Ytrehus, Bjørnar; Heldmer, Eva; Ekman, Stina (Peer reviewed; Journal article, 2015)
      Organic pig production is expanding and amongst the objectives of organic farming are enhancing animal health and welfare. However, some studies have reported a higher prevalence of lameness and joint condemnation at ...
    • Overvåking av fiskesamfunn i store vassdrag etter vannforskriften 

      Museth, Jon; Johnsen, Stein Ivar; Kraabøl, Morten; Dokk, John Gunnar; Skurdal, Jostein (Journal article; Peer reviewed, 2013)
      Vannforskriften skal sikre en mer helhetlig og økosystembasert vannforvaltning i Norge, og om nødvendig iverksette forebyggende eller forbedrende miljøtiltak for å sikre miljøtilstanden i ferskvann, grunnvann og kystvann. ...
    • Overvåking av sjeldne og rødlistede lavpå gamle eiker – lærdommer fra etpilotstudium 

      Sverdrup-Thygeson, Anne; Evju, Marianne; Gough, Leonie; Bratli, Harald; Haugan, Reidar; Nordén, Björn (Journal article; Peer reviewed, 2015)
    • An overview of existing raptor contaminant monitoring activitiesin Europe 

      Gómez-Ramírez, P.; Shore, R.F.; van den Brink, N.W.; van Hattum, B.; Bustnes, Jan Ove; Duke, G.; Fritsch, C.; García-Fernández, A.J.; Helander, B.O.; Jaspers, Veerle; Krone, O.; Martínez-López, E.; Mateo, R.; Sonne, C. (Peer reviewed; Journal article, 2014)
      Biomonitoring using raptors as sentinels can provide early warning of the potential impacts of contaminants on humans and the environment and also a means of tracking the success of associated mitigation measures. ...