Browsing Scientific publications by Title

Now showing items 997-1016 of 1472

    • Ontogeny shapes individual dietary specialization in female European brown bears (Ursus arctos) 

      Hertel, Anne G.; Albrecht, Jörg; Selva, Nuria; Sergiel, Agnieszka; Hobson, Keith A.; Janz, David M.; Mulch, Andreas; Kindberg, Jonas; Hansen, Jennifer Eve; Frank, Shane; Zedrosser, Andreas; Mueller, Thomas (Peer reviewed; Journal article, 2024)
      Individual dietary specialization, where individuals occupy a subset of a population’s wider dietary niche, is a key factor determining a species resilience against environmental change. However, the ontogeny of individual ...

    • 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 approach for upstream fish passage design: One-size-fits-all or made-to-order? 

      Nestler, John M.; Gosselin, Marie-Pierre (Peer reviewed; Journal article, 2023)
      Nearly 60,000 large dams (higher than 15 m) occur worldwide in addition to an estimated16 million smaller impoundments with individual surface areas larger than 100 m2.Theresulting habitat fragmentation threatens global ...

    • 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. ...

    • Optimizing the closure period for improved accuracy of chamber-based greenhouse gas flux estimates 

      Johannesson, Carl-Fredrik; Nordén, Jenni; Lange, Holger; Silvennoinen, Hanna Marika; Larsen, Klaus Steenberg (Peer reviewed; Journal article, 2024)
      Non-steady-state chambers are often used for greenhouse gas flux measurements, and while there are recommendations on how long to keep the chamber closed, it is less investigated to what extent the length of the chamber ...

    • 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 ...

    • Otolith microchemistry combined with genetics reveal patterns of straying and population connectivity in anadromous brown trout (Salmo trutta) 

      Källo, Kristi; Birnie-Gauvin, Kim; Baktoft, Henrik; Bekkevold, Dorte; Lesher, Charles; Grønkjær, Peter; Barfod, Gry Hoffmann; Johnson, Rachel; Whitman, George; Willmes, Malte; Glessner, Justin; Aarestrup, Kim (Peer reviewed; Journal article, 2023)
      Salmonids are well known for their natal homing behaviour, meaning they return to breed in the same area where they originated. However, not all individuals return to their natal breeding grounds—a behavioural trait known ...

    • 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. ...

    • Paint it black: Efficacy of increased wind turbine rotor blade visibility to reduce avian fatalities 

      May, Roelof Frans; Nygård, Torgeir; Falkdalen, Ulla; Åström, Jens; Hamre, Øyvind; Stokke, Bård Gunnar (Peer reviewed; Journal article, 2020)
      As wind energy deployment increases and larger wind-power plants are considered, bird fatalities through collision with moving turbine rotor blades are expected to increase. However, few (cost-) effective deterrent or ...

    • Paint it black: Efficacy of increased wind turbine rotor blade visibility to reduce avian fatalities 

      May, Roelof Frans; Nygård, Torgeir; Falkdalen, Ulla; Åström, Jens; Hamre, Øyvind; Stokke, Bård Gunnar (Peer reviewed; Journal article, 2020)
      As wind energy deployment increases and larger wind-power plants are considered, bird fatalities through collision with moving turbine rotor blades are expected to increase. However, few (cost-) effective deterrent or ...

    • A paleogenomic investigation of overharvest implications in an endemic wild reindeer subspecies 

      Kellner, Fabian Laszlo; Le Moullec, Mathilde; Ellegaard, Martin Rene; Rosvold, Jørgen; Peeters, Bart; Burnett, Hamish Andrew; Pedersen, Åshild Ønvik; Brealey, Jaelle C.; Dussex, Nicolas; Bieker, Vanessa Carina; Hansen, Brage Bremset; Martin, Michael David (Peer reviewed; Journal article, 2024)
      Overharvest can severely reduce the abundance and distribution of a species andthereby impact its genetic diversity and threaten its future viability. Overharvestremains an ongoing issue for Arctic mammals, which due to ...

    • The paradox of searching efficiency or why are violent population cycles so uncommon in terrestrial ecosystem 

      Oksanen, Lauri; Vuorinen, Katariina Elsa M; Oksanen, Tarja Maarit (Peer reviewed; Journal article, 2023)
      The searching efficiency of predators depends on the balance between the adaptations of the predator and the counter-adaptations of the prey. In this evolutionary race, the prey should normally have the upper hand, as it ...

    • Parasitoids in the family Pteromalidae (Hymenoptera, Chalcidoidea) new to Norway 

      Staverløkk, Arnstein (Peer reviewed; Journal article, 2022)
      Chalcidoidea is likely the most species rich superfamily among all Hymenoptera (Noyes 2022). Because of their small size and lack of knowledge, little is known about their species richness and ecology worldwide. In Norway, ...