Browsing NTNU Open by Author "Sæther, Bernt-Erik"

Now showing items 101-112 of 112

    • Sustainable strategies for harvesting predators and prey in a fluctuating environment 

      Bellier, Edwige; Sæther, Bernt-Erik; Engen, Steinar (Peer reviewed; Journal article, 2021)
      The effects of harvest and fluctuating environment on inter-dependent predators and prey are complex and not well-known. We define a stochastic model where the predators and prey dynamically interact. The novelty of the ...

    • Temperature synchronizes temporal variation in laying dates across European hole-nesting passerines 

      Vriend, Stefan J.G.; Grøtan, Vidar; Gamelon, Marlène; Adriaensen, Frank; Ahola, Markus P.; Álvarez, Elena; Bailey, Liam D.; Barba, Emilio; Bouvier, Jean-Charles; Burgess, Malcolm D.; Bushuev, Andrey; Camacho, Carlos; Canal, David; Charmantier, Anne; Cole, Ella F.; Cusimano, Camillo; Doligez, Blandine F.; Drobniak, Szymon M.; Dubiec, Anna; Eens, Marcel; Eeva, Tapio; Erikstad, Kjell E.; Ferns, Peter N.; Goodenough, Anne E.; Hartley, Ian R.; Hinsley, Shelley A.; Ivankina, Elena; Juškaitis, Rimvydas; Kempenaers, Bart; Kerimov, Anvar B.; Kålås, John Atle; Lavigne, Claire; Leivits, Agu; Mainwaring, Mark C.; Martínez-Padilla, Jesús; Matthysen, Erik; van Oers, Kees; Orell, Markku; Pinxten, Rianne; Reiertsen, Tone Kristin; Rytkönen, Seppo; Senar, Juan Carlos; Sheldon, Ben C.; Sorace, Alberto; Török, János; Vatka, Emma; Visser, Marcel E.; Sæther, Bernt-Erik (Peer reviewed; Journal article, 2022)
      Identifying the environmental drivers of variation in fitness-related traits is a central objective in ecology and evolutionary biology. Temporal fluctuations of these environmental drivers are often synchronized at large ...

    • Temporal and spatial variation in prevalence of the parasite Syngamus trachea in a metapopulation of House Sparrows (Passer domesticus) 

      Holand, Håkon; Jensen, Henrik; Tufto, Jarle; Sæther, Bernt-Erik; Ringsby, Thor Harald (Journal article, 2013)
      When investigating parasite–host dynamics in wild populations, a fundamental parameter to investigate is prevalence. This quantifies the percentage of individuals infected in the population. Investigating how prevalence ...

    • Temporal correlations among demographic parameters are ubiquitous but highly variable across species 

      Fay, Rémi; Hamel, Sandra; Van de Pol, Martijn; Gaillard, Jean Michel; Yoccoz, Nigel; Acker, Paul; Authier, Matthieu; Larue, Benjamin; Le Coeur, Christie; Macdonald, Kaitlin R.; Nicol-Harper, Alex; Barbraud, Christophe; Bonenfant, Christophe; Van Vuren, Dirk H.; Cam, Emmanuelle; Delord, Karine; Gamelon, Marlène; Moiron, Maria; Pelletier, Fanie; Rotella, Jay J.; Teplitsky, Céline; Visser, Marcel E.; Wells, Caitlin P.; Wheelwright, Nathaniel T.; Jenouvrier, Stéphanie; Sæther, Bernt-Erik (Peer reviewed; Journal article, 2022)
      Temporal correlations among demographic parameters can strongly influence population dynamics. Our empirical knowledge, however, is very limited regarding the direction and the magnitude of these correlations and how they ...

    • Temporal correlations among demographic parameters are ubiquitous but highly variable across species 

      Fay, Rémi; Hamel, Sandra; Van de Pol, Martijn; Gaillard, Jean Michel; Yoccoz, Nigel; Acker, Paul; Authier, Matthieu; Larue, Benjamin; Le Coeur, Christie; Macdonald, Kaitlin R.; Nicol-Harper, Alex; Barbraud, Christophe; Bonenfant, Christophe; Van Vuren, Dirk H.; Cam, Emmanuelle; Delord, Karine; Gamelon, Marlène; Moiron, Maria; Pelletier, Fanie; Rotella, Jay J.; Teplitsky, Céline; Visser, Marcel E.; Wells, Caitlin P.; Wheelwright, Nathaniel T.; Jenouvrier, Stéphanie; Sæther, Bernt-Erik (Peer reviewed; Journal article, 2022)
      Temporal correlations among demographic parameters can strongly influence population dynamics. Our empirical knowledge, however, is very limited regarding the direction and the magnitude of these correlations and how they ...

    • Towards a predictive conservation biology: the devil is in the behaviour 

      Sæther, Bernt-Erik; Engen, Steinar (Peer reviewed; Journal article, 2019)
      One of the most important challenges in conservation biology is to predict the viability of populations of vulnerable and threatened species. This requires that the demographic stochasticity strongly affecting the ecological ...

    • Understanding spatial and interspecific processes affecting population dynamics in a marine ecosystem. 

      Marquez, Jonatan Fredricson (Doctoral theses at NTNU;2022:11, Doctoral thesis, 2022)
      The dynamics of wild populations are affected by density dependent and density independent processes that vary across multiple temporal and spatial scales. Despite this high complexity, populations often show some degree ...

    • Use, selection, and home range properties: complex patterns of individual habitat utilization 

      Ofstad, Endre Grüner; Herfindal, Ivar; Solberg, Erling Johan; Heim, Morten; Rolandsen, Christer Moe; Sæther, Bernt-Erik (Journal article; Peer reviewed, 2019)
      Individual patterns of habitat use emerge from behavioral decisions driven by interactions between landscape characteristics and individual traits. Individual traits, such as age and sex, influence the net gain of using ...

    • Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation 

      Araya-Ajoy, Yimen; Niskanen, Alina Katariina; Froy, Hannah; Ranke, Peter Sjolte; Kvalnes, Thomas; Rønning, Bernt; Pepke, Michael Le; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik; Wright, Jonathan (Journal article; Peer reviewed, 2021)
      Generation time determines the pace of key demographic and evolutionary processes. Quantified as the weighted mean age at reproduction, it can be studied as a life-history trait that varies within and among populations and ...

    • Variation in recruitment failure of moose (Alces alces) - any effects of population condition and climate? 

      Markussen, Stine Svalheim (Master thesis, 2011)
      Summary1. Recruitment failure may represent an important demographic response to changes in the environment or in population size. In this study, I examined whether there was a positive relationship between recruitment ...

    • Årsrapport fra NINAs Elgmerkingsprosjekt i grenseområdet Akershus, Hedmark og Østfold i 2004 

      Heim, Morten; Solberg, Erling Johan; Sæther, Bernt-Erik (NINA rapport;12, Research report, 2005)
      Prosjektet ser på hvilke faktorer som påvirker bestandssvingningene i norske elgbestander. I denne regionen er prosjektet spesielt fokusert på hvordan en stedlig ulvebestand påvirker re-krutteringen til elgbestanden. Denne ...

    • Årsrapport fra NINAs elgmerkingsprosjekt i grenseområdet Akershus, Hedmark og Østfold i 2005 

      Heim, Morten; Solberg, Erling Johan; Sæther, Bernt-Erik (NINA-rapport;132, Research report, 2006)
      Prosjektet ser på hvilke faktorer som påvirker bestandssvingningene i norske elgbestander. I denne regionen er prosjektet spesielt fokusert på hvordan en stedlig ulvebestand påvirker re-krutteringen til elgbestanden. Denne ...