Now showing items 456-475 of 679

    • Nuclear and mitochondrial markers suggest new 

      Ferrer-Suay, Mar; Staverløkk, Arnstein; Selfa, Jesús; Pujade-Villar, Juli; Naik, Suresh; Ekrem, Torbjørn (Journal article, 2018)
      Due to their small size and smooth body, members of the figitid genus Alloxysta can be notoriously difficult to identify based on morphology alone. Moreover, several species are suspected to contain brachypterous variants ...
    • Numerical responses of saproxylic beetles to rapid increases in dead wood availability following geometrid moth outbreaks in sub-arctic mountain birch forest 

      Laksforsmo Vindstad, Ole Petter; Schultze, Sabrina; Jepsen, Jane Uhd; Biuw, Erik Martin; Kapari, Lauri Teemu; Sverdrup-Thygeson, Anne; Ims, Rolf Anker (Peer reviewed, 2014)
      Saproxylic insects play an important part in decomposing dead wood in healthy forest ecosystems, but little is known about their role in the aftermath of large-scale forest mortality caused by pest insect outbreaks. We ...
    • Nyfunn av hvit skogfrue Cephalanthera longifolia i Tysnes, Hordaland, samt litt om artens økologi og skjøtselsbehov 

      Fadnes, Per; Brandrud, Tor Erik (Journal article; Peer reviewed, 2016)
      Cephalanthera longifolia is redlisted as near threatened (NT) in the Norwegian Red list (2015), and is one oftotally 13 protected orchids in Norway. In South-Western Norway only a few localities with only a few plants of ...
    • Occupancy versus colonization–extinction models for projecting population trends at different spatial scales 

      Nordén, Jenni; Harrison, Philip J.; Mair, Louise; Siitonen, Juha; Lundström, Anders; Kindvall, Oskar; Snäll, Tord (Peer reviewed, 2020)
      Understanding spatiotemporal population trends and their drivers is a key aim in population ecology. We further need to be able to predict how the dynamics and sizes of populations are affected in the long term by changing ...
    • Occurrence of the European eel in lakes in the northern part of its distribution area is limited to low-altitude coastal areas, likely due to topographical conditions 

      Foldvik, Anders; Ulvan, Eva M.; Thorstad, Eva B.; Hesthagen, Trygve (Peer reviewed, 2019)
      With the decline of the European eel, protection measures in all parts of the eel’s distribution area may be increasingly important. Norway has a vast coastline (58°–71°N), but the distribution of eel has been largely ...
    • Ocean climate and egg investment in the black-legged kittiwake Rissa tridactyla 

      Barrett, Robert T; Erikstad, Kjell E; Reiertsen, Tone (Journal article; Peer reviewed, 2017)
      Birds allocate substantial resources to their eggs during the laying period, resources also needed for other concurrent costly processes such as mate acquisition, nest building and site defence. Egg and clutch sizes may ...
    • 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, 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 ...
    • 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, ...
    • 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, 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, 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 ...
    • 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 ...
    • 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)