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  1. Employees

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Norsk

Vidar Grøtan

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Vidar Grøtan

Professor
Department of Biology

vidar.grotan@ntnu.no
+4773551285 +4792653244 Realfagbygget, D1-196, Gløshaugen, Høgskoleringen 5
About Publications Teaching Outreach

About

 

 

I am head of the Community Dynamics research area at the Centre for Biodiversity Dynamics (CBD). CBD is a Norwegian Centre of excellence (SFF). I am also part of the Ecology research group at the Department of Biology at NTNU

 

Teaching:

  • BI2033 - Population ecology

  • BI3084 - Applied population dynamics for conservation and management

  • BI8081 - Advanced Conservation Biology

  • BI8091 - Advanced Biology

Competencies

  • Community dynamics
  • Community ecology
  • Ecological modelling
  • Population dynamics
  • Population ecology
  • Quantitative ecology
  • Stochastic dynamics

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2025

  • Eriksen, Lasse Frost; Ringsby, Thor Harald; Israelsen, Markus Fjellstad; Moa, Pål Fossland; Grøtan, Vidar; Nilsen, Erlend Birkeland. (2025) Climatic variation affects seasonal survival of an alpine bird species. Wildlife Biology
    Academic article
  • Eriksen, Lasse Frost; Ringsby, Thor Harald; Israelsen, Markus Fjellstad; Moa, Pål Fossland; Grøtan, Vidar; Nilsen, Erlend Birkeland. (2025) Climatic variation affects seasonal survival of an alpine bird species. Wildlife Biology
    Academic article

2024

  • Eriksen, Lasse Frost; Nilsen, Erlend Birkeland; Ringsby, Thor Harald; Moa, Pål Fossland; Grøtan, Vidar. (2024) Life history traits and demography of a mountain bird under climatic variation. Doktoravhandlinger ved NTNU (2024:90)
    Doctoral dissertation
  • Sandal, Lisa; Sæther, Bernt-Erik; Freckleton, Robert P.; Noble, David G.; Schwarz, Johannes; Leivits, Agu. (2024) Species richness and evenness of European bird communities show differentiated responses to measures of productivity. Journal of Animal Ecology
    Academic article
  • Bartra Cabre, Laura; Hansen, Brage Bremset; Lee, Aline Magdalena; Layton-Matthews, Kate; Loonen, Maarten J. J. E.; Fuglei, Eva. (2024) The role of indirect interspecific effects in the stochastic dynamics of a simple trophic system. Journal of Animal Ecology
    Academic article

2023

  • Sandal, Lisa; Grøtan, Vidar; Sæther, Bernt-Erik; Ovaskainen, Otso Tapio. (2023) Spatiotemporal dynamics of avian communitites. NTNU
    Doctoral dissertation
  • Lande, Russell Scott; Grøtan, Vidar; Engen, Steinar; Visser, M.E.; Sæther, Bernt-Erik. (2023) Estimating Density Dependence, Environmental Variance, and Long-Term Selection on a Stage-Structured Life History. The American Naturalist
    Academic article
  • Layton-Matthews, Kate; Vriend, Stefan J.G.; Grøtan, Vidar; Loonen, Maarten J. J. E.; Sæther, Bernt-Erik; Fuglei, Eva. (2023) Extreme events, trophic chain reactions, and shifts in phenotypic selection. Scientific Reports
    Academic article
  • Layton-Matthews, Kate; Vriend, Stefan J.G.; Grøtan, Vidar; Loonen, Maarten J J E; Sæther, Bernt-Erik; Fuglei, Eva. (2023) Erratum: Author Correction: Extreme events, trophic chain reactions, and shifts in phenotypic selection (Scientific reports (2023) 13 1 (15181)). Scientific Reports
    Errata

2022

  • Vriend, Stefan J.G.; Grøtan, Vidar; Gamelon, Marlène; Adriaensen, Frank; Ahola, Markus P.; Álvarez, Elena. (2022) Temperature synchronizes temporal variation in laying dates across European hole-nesting passerines. Ecology
    Academic article
  • Koch, Wouter; Finstad, Anders Gravbrøt; Nilsen, Erlend Birkeland; Grøtan, Vidar; O'Hara, Robert B.. (2022) Improving the citizen science data corpus for science and management. NTNU
    Doctoral dissertation
  • Karlsen, Simen; Hansen, Brage Bremset; Lee, Aline Magdalena; Martin, Ellen Claire; Grøtan, Vidar. (2022) No evidence of overall changes in spatial population synchrony across bird species in North America. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Masters thesis
  • Sandal, Lisa; Grøtan, Vidar; Sæther, Bernt-Erik; Freckleton, Robert P.; Noble, David G.; Ovaskainen, Otso. (2022) Effects of density, species interactions, and environmental stochasticity on the dynamics of British bird communities. Ecology
    Academic article
  • Lenz, Kay Banu; Hansen, Brage Bremset; Fossøy, Frode; Stokke, Bård Gunnar; Grøtan, Vidar; Varpe, Øystein. (2022) The Role of the Arctic Fox in the Breeding Success of the Snow Bunting. NTNU, Department of Biology
    Masters thesis
  • Petersen, Tanja Kofod; Speed, James David Mervyn; Grøtan, Vidar; Frøyen, Yngve Karl; Austrheim, Gunnar. (2022) Urbanisation and land-cover change affect functional, but not compositional turnover of bird communities. Urban Ecosystems
    Academic article
  • Layton-Matthews, Kate; Vriend, Stefan J.G.; Grøtan, Vidar; Loonen, Maarten J.J.E.; Sæther, Bernt-Erik; Fuglei, Eva. (2022) Extreme events, trophic chain reactions, and shifts in phenotypic selection. Research Square
    Academic article
  • Sætre, Mikael Andreas; Layton-Matthews, Kate; Peeters, Bart; Lee, Aline Magdalena; Grøtan, Vidar; Hansen, Brage Bremset. (2022) Climate change influences reproduction in Arctic breeding geese through altered predator-prey interactions. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Masters thesis
  • Peeters, Bart; Grøtan, Vidar; Gamelon, Marlène; Veiberg, Vebjørn; Lee, Aline Magdalena; Fryxell, John M.. (2022) Harvesting can stabilise population fluctuations and buffer the impacts of extreme climatic events. Ecology Letters
    Academic article

2021

  • Petersen, Tanja Kofod; Austrheim, Gunnar; Speed, James David Mervyn; Grøtan, Vidar. (2021) Biodiversity dynamics in urban areas under changing land-uses. Norwegian University of Science and Technology
    Doctoral dissertation
  • Petersen, Tanja Kofod; Speed, James David Mervyn; Grøtan, Vidar; Austrheim, Gunnar. (2021) Competitors and ruderals go to town: plant community composition and function along an urbanisation gradient. Nordic Journal of Botany (NJB)
    Academic article
  • Petersen, Tanja Kofod; Austrheim, Gunnar; Speed, James David Mervyn; Grøtan, Vidar; Frøyen, Yngve Karl. (2021) Hvilke arter skal vi bo sammen med i byen?. Forskersonen.no
    Feature article
  • Marjakangas, Emma-Liina; Ovaskainen, Otso; Abrego, Nerea; Grøtan, Vidar; de Oliveira, Alexandre A.; Prado, Paulo I.. (2021) Co-occurrences of tropical trees in eastern South America: disentangling abiotic and biotic forces. Plant Ecology
    Academic article
  • Engen, Steinar; Grøtan, Vidar; Sæther, Bernt-Erik; Coste, Christophe. (2021) An evolutionary and ecological community model for distribution of phenotypes and abundances among competing species. The American Naturalist
    Academic article
  • Petersen, Tanja Kofod; Speed, James David Mervyn; Grøtan, Vidar; Austrheim, Gunnar. (2021) Species data for understanding biodiversity dynamics: The what, where and when of species occurrence data collection. Ecological Solutions and Evidence
    Academic article

2020

  • Fjelldal, Mari Aas; Layton-Matthews, Kate; Lee, Aline Magdalena; Grøtan, Vidar; Loonen, Maarten J.J.E.; Hansen, Brage Bremset. (2020) High-Arctic family planning: earlier spring onset advances age at first reproduction in barnacle geese. Biology Letters
    Academic article
  • Petersen, Tanja Kofod; Speed, James David Mervyn; Grøtan, Vidar; Austrheim, Gunnar. (2020) Urban aliens and threatened near-naturals: Land-cover affects the species richness of alien- and threatened species in an urban-rural setting. Scientific Reports
    Academic article
  • Hansen, Brage Bremset; Grøtan, Vidar; Herfindal, Ivar; Lee, Aline Magdalena. (2020) The Moran effect revisited: spatial population synchrony under global warming. Ecography
    Academic article
  • Le Moullec, Mathilde; Sandal, Lisa; Grøtan, Vidar; Buchwal, Agata; Hansen, Brage Bremset. (2020) Climate synchronises shrub growth across a high‐arctic archipelago: contrasting implications of summer and winter warming. Oikos
    Academic article
  • Herfindal, Ivar; Tveraa, Torkild; Stien, Audun; Solberg, Erling Johan; Grøtan, Vidar. (2020) When does weather synchronise life history traits? Spatiotemporal patterns in juvenile body mass of two ungulates. . Journal of Animal Ecology
    Academic article
  • Sæther, Bernt-Erik; Engen, Steinar; Gustafsson, Lars; Grøtan, Vidar; Vriend, Stefan. (2020) Density-Dependent Adaptive Topography in a Small Passerine Bird, the Collared Flycatcher. The American Naturalist
    Academic article
  • Naves, Rafaela Pereira; Grøtan, Vidar; Prado, Paolo Inacio; Vidal, Edson; Batista, Joao Luis Ferreira. (2020) Tropical forest management altered abundances of individual tree species but not diversity. Forest Ecology and Management
    Academic article
  • Matthews, Kate Layton; Grøtan, Vidar; Hansen, Brage Bremset; Loonen, Maarten J.J.E.; Fuglei, Eva; Childs, Dylan Z.. (2020) Environmental change reduces body condition, but not population growth, in a high arctic herbivore. Ecology Letters
    Academic article
  • Hilmarsen, Kjerstin Bakken; Grøtan, Vidar; Hansen, Brage Bremset; Stokke, Bård Gunnar; Fossøy, Frode; Varpe, Øystein. (2020) Body mass growth in nestlings of Svalbard snow buntings (Plectrophenax nivalis) in response to seasonal variation in arthropod biomass. NTNU, Dept. of Biology
    Masters thesis
  • Layton-Matthews, Kate; Grøtan, Vidar; Hansen, Brage Bremset; Loonen, Maarten J.J.E.. (2020) Demographic consequences of rapid climate change and density dependence in migratory Arctic geese. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Doctoral dissertation

2019

  • Israelsen, Markus Fjellstad; Nilsen, Erlend Birkeland; Grøtan, Vidar; Bolstad, Geir Hysing. (2019) The effects of habitat size and distance to forest edge on the occupancy dynamics of rock ptarmigan (Lagopus muta) in Norway. NTNU
    Masters thesis
  • Layton-Matthews, Kate; Loonen, Maarten J.J.E.; Hansen, Brage Bremset; Coste, Christophe Francois Daniel; Sæther, Bernt-Erik; Grøtan, Vidar. (2019) Density‐dependent population dynamics of a high Arctic capital breeder, the barnacle goose. Journal of Animal Ecology
    Academic article
  • Hansen, Brage Bremset; Pedersen, Åshild Ønvik; Peeters, Bart; Le Moullec, Mathilde; Albon, Steve D.; Herfindal, Ivar. (2019) Spatial heterogeneity in climate change effects decouples the long‐term dynamics of wild reindeer populations in the high Arctic. Global Change Biology
    Academic article
  • Layton-Matthews, Kate; Hansen, Brage Bremset; Grøtan, Vidar; Fuglei, Eva; Loonen, Maarten J.J.E.. (2019) Contrasting consequences of climate change for migratory geese: Predation, density dependence and carryover effects offset benefits of high‐arctic warming. Global Change Biology
    Academic article
  • Fjelldal, Mari Aas; Hansen, Brage Bremset; Grøtan, Vidar; Layton-Matthews, Kate; Loonen, Maarten J.J.E.. (2019) Family planning in the high Arctic: earlier spring onset advances age at first successful reproduction in barnacle geese. Norges teknisk-naturvitenskaplige universitet
    Masters thesis
  • Hansen, Brage Bremset; Gamelon, Marlène; Albon, Steve D.; Lee, Aline Magdalena; Stien, Audun; Irvine, Robert Justin. (2019) More frequent extreme climate events stabilize reindeer population dynamics. Nature Communications
    Academic article
  • Marjakangas, Emma-Liina; Abrego, Nerea; Grøtan, Vidar; de Lima, Renato A.F.; Bello, Caroline; Bovendorp, Ricardo S. (2019) Fragmented tropical forests lose mutualistic plant–animal interactions. Diversity and Distributions: A Journal of Conservation Biogeography
    Academic article
  • Marjakangas, Emma-Liina; Abrego, Nerea; Ovaskainen, Otso; Grøtan, Vidar. (2019) Understanding species interactions in the tropics: dynamics within and between trophic levels. Norwegian University of Science and Technology, Faculty of Natural Sciences, Department of Biology
    Doctoral dissertation
  • Valøen, Kristine; Grøtan, Vidar; Hansen, Brage Bremset; Le Moullec, Mathilde; Varpe, Øystein. (2019) Stochastic rain events increase NDVI through moss water content: a High-Arctic field experiment. NTNU
    Masters thesis
  • Lillehaug, Egil; Grøtan, Vidar; Hansen, Brage Bremset; Fossøy, Frode; Stokke, Bård Gunnar; Sandercock, Brett. (2019) Environmental correlates of variation in a holistic analysis of annual offspring production in the high Arctic songbird snow bunting (Plectrophenax nivalis) on Spitsbergen. NTNU, Dept. of Biology
    Masters thesis

2017

  • Ovaskainen, Otso; Tikhonov, Gleb; Dunson, David; Grøtan, Vidar; Engen, Steinar; Sæther, Bernt-Erik. (2017) How are species interactions structured in species-rich communities? A new method for analysing time-series data. Proceedings of the Royal Society of London. Biological Sciences
    Academic article
  • Sandal, Lisa; Grøtan, Vidar; Le Moullec, Mathilde; Hansen, Brage Bremset. (2017) Spatiotemporal patterns of plant growth in a warming high Arctic: insights from dendrochronology of Salix polaris. NTNU
    Masters thesis
  • Gamelon, Marlène; Grøtan, Vidar; Nilsson, Anna L. K.; Engen, Steinar; Hurrell, James W.; Jerstad, Kurt. (2017) Interactions between demography and environmental effects are important determinants of population dynamics. Science Advances
    Academic article
  • Hanne, Haraldsen; Hansen, Brage Bremset; Grøtan, Vidar; Jonsdottir, Ingibjørg. (2017) Effects of experimental winter icing and summer warming on high Arctic tundra vascular plants: a comparison of growth forms. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Masters thesis
  • Grotheim, Marta; Hansen, Brage Bremset; Jonsdottir, Ingibjørg; Grøtan, Vidar; Layton-Matthews, Kate. (2017) Effects of Experimental Icing and Summer Warming on the Polar Willow Salix polaris on Svalbard. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Masters thesis

2016

  • Sæther, Bernt-Erik; Grøtan, Vidar; Engen, Steinar; Coulson, Tim; Grant, Peter R.; Visser, Marcel E.. (2016) Demographic routes to variability and regulation in bird populations. Nature Communications
    Academic article
  • Sæther, Bernt-Erik; Visser, Marcel E; Grøtan, Vidar; Engen, Steinar. (2016) Evidence for r-and K-selection in a wild bird population: A reciprocal link between ecology and evolution. Proceedings of the Royal Society of London. Biological Sciences
    Academic article
  • Gamelon, Marlène; Grøtan, Vidar; Engen, Steinar; Bjørkvoll, Eirin Marie; Visser, Marcel E.; Sæther, Bernt-Erik. (2016) Density dependence in an age-structured population of great tits: identifying the critical age classes. Ecology
    Academic article
  • Bjørkvoll, Eirin Marie; Lee, Aline Magdalena; Grøtan, Vidar; Sæther, Bernt-Erik; Stien, Audun; Engen, Steinar. (2016) Demographic buffering of life histories? Implications of the choice of measurement scale. Ecology
    Academic article

2015

  • Lee, Aline Magdalena; Bjørkvoll, Eirin Marie; Hansen, Brage Bremset; Albon, Steve D.; Stien, Audun; Sæther, Bernt-Erik. (2015) An integrated population model for a long-lived ungulate: more efficient data use with Bayesian methods. Oikos
    Academic article

2014

  • Bjørkvoll, Eirin Marie; Sæther, Bernt-Erik; Grøtan, Vidar; Aanes, Ronny. (2014) Life-history variation and stochastic population dynamics in vertebrates. Norwegian University of Science and Technology
    Doctoral dissertation
  • Bellier, Edwige Louise; Grøtan, Vidar; Engen, Steinar; Schartau, Ann Kristin; Herfindal, Ivar; Finstad, Anders Gravbrøt. (2014) Distance decay of similarity, effects of environmental noise and ecological heterogeneity among species in the spatio-temporal dynamics of a dispersal-limited community. Ecography
    Academic article
  • Grøtan, Vidar; Lande, Russell; Chacon, IA; DeVries, PJ. (2014) Seasonal cycles of diversity and similarity in a Central American rainforest butterfly community. Ecography
    Academic article

2013

  • Hansen, Brage Bremset; Grøtan, Vidar; Aanes, Ronny; Sæther, Bernt-Erik; Stien, Audun; Fuglei, Eva. (2013) Climate Events Synchronize the Dynamics of a Resident Vertebrate Community in the High Arctic. Science
    Academic article
  • Sæther, Bernt-Erik; Engen, Steinar; Grøtan, Vidar. (2013) Species diversity and community similarity in fluctuating environments: parametric approaches using species abundance distributions. Journal of Animal Ecology
    Academic literature review
  • Sæther, Bernt-Erik; Coulson, Tim; Grøtan, Vidar; Engen, Steinar; Altwegg, Res; Armitage, Kenneth B.. (2013) How Life History Influences Population Dynamics in Fluctuating Environments. The American Naturalist
    Academic article
  • Linnerud, Marit; Sæther, Bernt-Erik; Grøtan, Vidar; Engen, Steinar; Noble, DG; Freckleton, RP. (2013) Interspecific differences in stochastic population dynamics explains variation in Taylor's temporal power law. Oikos
    Academic article
  • Reed, TE; Grøtan, Vidar; Jenouvrier, S; Sæther, Bernt-Erik; Visser, ME. (2013) Population Growth in a Wild Bird Is Buffered Against Phenological Mismatch. Science
    Academic article

2012

  • Bellier, Edwige; Grøtan, Vidar; Engen, Steinar; Schartau, Ann Kristin; Diserud, Ola Håvard; Finstad, Anders Gravbrøt. (2012) Combining counts and incidence data: an efficient approach for estimating the log-normal species abundance distribution and diversity indices. Oecologia
    Academic article
  • Grøtan, Vidar; Lande, Russell; Engen, Steinar; Sæther, Bernt-Erik; DeVries, PJ. (2012) Seasonal cycles of species diversity and similarity in a tropical butterfly community. Journal of Animal Ecology
    Academic article
  • Herfindal, Ivar; Drever, Mark C.; Høgda, Kjell Arild; Podruzny, Kevin M.; Nudds, Thomas D.; Grøtan, Vidar. (2012) Landscape heterogeneity and the effect of environmental conditions on prairie wetlands. Landscape Ecology
    Academic article
  • Bjørkvoll, Eirin Marie; Grøtan, Vidar; Aanes, Sondre; Sæther, Bernt-Erik; Engen, Steinar; Aanes, Ronny. (2012) Stochastic Population Dynamics and Life-History Variation in Marine Fish Species. The American Naturalist
    Academic article

2011

  • Engen, Steinar; Grøtan, Vidar; Sæther, Bernt-Erik. (2011) Estimating similarity of communities: a parametric approach to spatio-temporal analysis of species diversity. Ecography
    Academic article
  • Sæther, Bernt-Erik; Grøtan, Vidar; Engen, Steinar; Noble, DG; Freckleton, RP. (2011) Rarity, life history and scaling of the dynamics in time and space of British birds. Journal of Animal Ecology
    Academic article
  • Bjørkvoll, Eirin Marie; Aanes, Sondre; Grøtan, Vidar; Sæther, Bernt-Erik; Engen, Steinar; Aanes, Ronny. (2011) Beaked redfish and golden redfish: Estimating abundances at age and population dynamical parameters by fitting a stochastic population model to abundance data within a Bayesian framework. ICES Arctic Fisheries Working Group
    Report

2010

  • Sæther, Bernt-Erik; Engen, Steinar; Odden, John; Linnell, John D. C.; Grøtan, Vidar; Andrén, Henrik. (2010) Sustainable harvest strategies for age-structured Eurasian lynx populations: The use of reproductive value. Biological Conservation
    Academic article

2009

  • Garel, Mathieu; Solberg, Erling Johan; Sæther, Bernt-Erik; Grøtan, Vidar; Tufto, Jarle; Heim, Morten. (2009) Age, size and spatio-temporal variation in ovulation patterns of a seasonal breeder, the Norwegian moose (Alces alces). The American Naturalist
    Academic literature review
  • Grøtan, Vidar; Sæther, Bernt-Erik; Engen, Steinar; Johan H., van Balen; Perdeck, Albert C.; Visser, Marcel E.. (2009) Spatial and temporal variation in the relative contribution of density dependence, climate variation and migration to fluctuations in the size of great tit populations. Journal of Animal Ecology
    Academic article
  • Sæther, Bernt-Erik; Grøtan, Vidar; Engen, Steinar; Noble, DG; Freckleton, RP. (2009) Critical parameters for predicting population fluctuations of some British passerines. Journal of Animal Ecology
    Academic article
  • Grøtan, Vidar; Sæther, Bernt-Erik; Lillegård, Magnar; Solberg, EJ; Engen, Steinar. (2009) Geographical variation in the influence of density dependence and climate on the recruitment of Norwegian moose. Oecologia
    Academic article

2008

  • Solberg, Erling Johan; Garel, Mathieu; Heim, Morten; Grøtan, Vidar; Sæther, Bernt-Erik. (2008) Lack of compensatory body growth in a high performance moose Alces alces population. Oecologia
    Academic literature review
  • Engen, Steinar; Sæther, Bernt-Erik; Sverdrup-Thygeson, A; Grøtan, Vidar; Ødegaard, F. (2008) Assessment of species diversity from species abundance distributions at different localities. Oikos
    Academic article
  • Sæther, Bernt-Erik; Lillegård, Magnar; Grøtan, Vidar; Drever, Mark C.; Engen, Steinar; Nudds, Thomas D.. (2008) Geographical gradients in the population dynamics of North American prairie ducks. Journal of Animal Ecology
    Academic article
  • Engen, Steinar; Grøtan, Vidar; Halley, Duncan; Nygård, Torgeir. (2008) An efficient multivariate approach for estimating preference when individual observations are dependent. Journal of Animal Ecology
    Academic article
  • Sæther, Bernt-Erik; Engen, Steinar; Grøtan, Vidar; Bregnballe, Thomas; Both, Christiaan; Tryjanowski, Piotr. (2008) Forms of density regulation and (quasi-) stationary distributions of population sizes in birds. Oikos
    Academic article
  • Lillegård, Magnar; Engen, Steinar; Sæther, Bernt-Erik; Grøtan, Vidar; Drever, Mark C.. (2008) Estimation of population parameters from aerial counts of north American mallards: a cautionary tale. Ecological Applications
    Academic article
  • Grøtan, Vidar; Sæther, Bernt-Erik; Filli, Flurin; Engen, Steinar. (2008) Effects of climate on population fluctuations of ibex. Global Change Biology
    Academic article

2007

  • Sæther, Bernt-Erik; Engen, Steinar; Grøtan, Vidar; Fiedler, W; Matthysen, E; Visser, ME. (2007) The extended Moran effect and large-scale synchronous fluctuations in the size of great tit and blue tit populations. Journal of Animal Ecology
    Academic article
  • Sæther, Bernt-Erik; Lillegård, Magnar; Grøtan, Vidar; Filli, F; Engen, Steinar. (2007) Predicting fluctuations of reintroduced ibex populations: the importance of density dependence, environmental stochasticity and uncertain population estimates. Journal of Animal Ecology
    Academic article
  • Solberg, Erling Johan; Heim, Morten; Grøtan, Vidar; Sæther, Bernt-Erik; Garel, Mathieu. (2007) Annual variation in maternal age and calving date generate cohort effects in moose (Alces alces) body mass. Oecologia
    Academic article

2006

  • Sæther, Bernt-Erik; Grøtan, Vidar; Tryjanowski, P.; Barbraud, C; Engen, Steinar; Fulin, M. (2006) Climate and spatio-temporal variation in the population dynamics of a long-distance migrant, the white stork. Journal of Animal Ecology
    Academic article
  • Grøtan, Vidar. (2006) Temporal and spatial effects of climate fluctuations on population dynamics of vertebrates. NTNU, Institutt for biologi
    Doctoral dissertation
  • Solberg, Erling Johan; Rolandsen, Christer Moe; Heim, Morten; Grøtan, Vidar; Garel, Mathieu; Sæther, Bernt-Erik. (2006) Elgen i Norge sett med jegerøyne. En analyse av jaktmaterialet fra overvå-kingsprogrammet for elg og det samlede sett elg-materialet for perioden 1966-2004. NINA rapport (125)
    Report

2005

  • Grøtan, Vidar; Sæther, Bernt-Erik; Engen, Steinar; Solberg, E.J.; Linnell, J.D.C.; Andersen, Reidar. (2005) Climate causes large-scale spatial synchrony in population fluctuations of a temperate herbivore. Ecology
    Academic article
  • Solberg, Erling Johan; Grøtan, Vidar; Rolandsen, Christer M.; Brøseth, Henrik; Brainerd, Scott. (2005) Change-in-sex ratio as an estimator of population size for Norwegian moose Alces alces. Wildlife Biology
    Academic article

2003

  • Grøtan, Vidar. (2003) Large scale synchronization of moose (Alces alces) population dynamics through climate and harvest. [Mangler utgivernavn]
    Thesis at a second degree level

2001

  • Solberg, Erling Johan; Grøtan, Vidar; Sæther, Bernt-Erik; Heim, Morten. (2001) Elgens framtidige bestandsstruktur: Velger vi skogens konge eller skogens hellige kyr. Hjorteviltet
    Popular scientific article

Journal publications

  • Eriksen, Lasse Frost; Ringsby, Thor Harald; Israelsen, Markus Fjellstad; Moa, Pål Fossland; Grøtan, Vidar; Nilsen, Erlend Birkeland. (2025) Climatic variation affects seasonal survival of an alpine bird species. Wildlife Biology
    Academic article
  • Eriksen, Lasse Frost; Ringsby, Thor Harald; Israelsen, Markus Fjellstad; Moa, Pål Fossland; Grøtan, Vidar; Nilsen, Erlend Birkeland. (2025) Climatic variation affects seasonal survival of an alpine bird species. Wildlife Biology
    Academic article
  • Sandal, Lisa; Sæther, Bernt-Erik; Freckleton, Robert P.; Noble, David G.; Schwarz, Johannes; Leivits, Agu. (2024) Species richness and evenness of European bird communities show differentiated responses to measures of productivity. Journal of Animal Ecology
    Academic article
  • Bartra Cabre, Laura; Hansen, Brage Bremset; Lee, Aline Magdalena; Layton-Matthews, Kate; Loonen, Maarten J. J. E.; Fuglei, Eva. (2024) The role of indirect interspecific effects in the stochastic dynamics of a simple trophic system. Journal of Animal Ecology
    Academic article
  • Lande, Russell Scott; Grøtan, Vidar; Engen, Steinar; Visser, M.E.; Sæther, Bernt-Erik. (2023) Estimating Density Dependence, Environmental Variance, and Long-Term Selection on a Stage-Structured Life History. The American Naturalist
    Academic article
  • Layton-Matthews, Kate; Vriend, Stefan J.G.; Grøtan, Vidar; Loonen, Maarten J. J. E.; Sæther, Bernt-Erik; Fuglei, Eva. (2023) Extreme events, trophic chain reactions, and shifts in phenotypic selection. Scientific Reports
    Academic article
  • Layton-Matthews, Kate; Vriend, Stefan J.G.; Grøtan, Vidar; Loonen, Maarten J J E; Sæther, Bernt-Erik; Fuglei, Eva. (2023) Erratum: Author Correction: Extreme events, trophic chain reactions, and shifts in phenotypic selection (Scientific reports (2023) 13 1 (15181)). Scientific Reports
    Errata
  • Vriend, Stefan J.G.; Grøtan, Vidar; Gamelon, Marlène; Adriaensen, Frank; Ahola, Markus P.; Álvarez, Elena. (2022) Temperature synchronizes temporal variation in laying dates across European hole-nesting passerines. Ecology
    Academic article
  • Sandal, Lisa; Grøtan, Vidar; Sæther, Bernt-Erik; Freckleton, Robert P.; Noble, David G.; Ovaskainen, Otso. (2022) Effects of density, species interactions, and environmental stochasticity on the dynamics of British bird communities. Ecology
    Academic article
  • Petersen, Tanja Kofod; Speed, James David Mervyn; Grøtan, Vidar; Frøyen, Yngve Karl; Austrheim, Gunnar. (2022) Urbanisation and land-cover change affect functional, but not compositional turnover of bird communities. Urban Ecosystems
    Academic article
  • Layton-Matthews, Kate; Vriend, Stefan J.G.; Grøtan, Vidar; Loonen, Maarten J.J.E.; Sæther, Bernt-Erik; Fuglei, Eva. (2022) Extreme events, trophic chain reactions, and shifts in phenotypic selection. Research Square
    Academic article
  • Peeters, Bart; Grøtan, Vidar; Gamelon, Marlène; Veiberg, Vebjørn; Lee, Aline Magdalena; Fryxell, John M.. (2022) Harvesting can stabilise population fluctuations and buffer the impacts of extreme climatic events. Ecology Letters
    Academic article
  • Petersen, Tanja Kofod; Speed, James David Mervyn; Grøtan, Vidar; Austrheim, Gunnar. (2021) Competitors and ruderals go to town: plant community composition and function along an urbanisation gradient. Nordic Journal of Botany (NJB)
    Academic article
  • Petersen, Tanja Kofod; Austrheim, Gunnar; Speed, James David Mervyn; Grøtan, Vidar; Frøyen, Yngve Karl. (2021) Hvilke arter skal vi bo sammen med i byen?. Forskersonen.no
    Feature article
  • Marjakangas, Emma-Liina; Ovaskainen, Otso; Abrego, Nerea; Grøtan, Vidar; de Oliveira, Alexandre A.; Prado, Paulo I.. (2021) Co-occurrences of tropical trees in eastern South America: disentangling abiotic and biotic forces. Plant Ecology
    Academic article
  • Engen, Steinar; Grøtan, Vidar; Sæther, Bernt-Erik; Coste, Christophe. (2021) An evolutionary and ecological community model for distribution of phenotypes and abundances among competing species. The American Naturalist
    Academic article
  • Petersen, Tanja Kofod; Speed, James David Mervyn; Grøtan, Vidar; Austrheim, Gunnar. (2021) Species data for understanding biodiversity dynamics: The what, where and when of species occurrence data collection. Ecological Solutions and Evidence
    Academic article
  • Fjelldal, Mari Aas; Layton-Matthews, Kate; Lee, Aline Magdalena; Grøtan, Vidar; Loonen, Maarten J.J.E.; Hansen, Brage Bremset. (2020) High-Arctic family planning: earlier spring onset advances age at first reproduction in barnacle geese. Biology Letters
    Academic article
  • Petersen, Tanja Kofod; Speed, James David Mervyn; Grøtan, Vidar; Austrheim, Gunnar. (2020) Urban aliens and threatened near-naturals: Land-cover affects the species richness of alien- and threatened species in an urban-rural setting. Scientific Reports
    Academic article
  • Hansen, Brage Bremset; Grøtan, Vidar; Herfindal, Ivar; Lee, Aline Magdalena. (2020) The Moran effect revisited: spatial population synchrony under global warming. Ecography
    Academic article
  • Le Moullec, Mathilde; Sandal, Lisa; Grøtan, Vidar; Buchwal, Agata; Hansen, Brage Bremset. (2020) Climate synchronises shrub growth across a high‐arctic archipelago: contrasting implications of summer and winter warming. Oikos
    Academic article
  • Herfindal, Ivar; Tveraa, Torkild; Stien, Audun; Solberg, Erling Johan; Grøtan, Vidar. (2020) When does weather synchronise life history traits? Spatiotemporal patterns in juvenile body mass of two ungulates. . Journal of Animal Ecology
    Academic article
  • Sæther, Bernt-Erik; Engen, Steinar; Gustafsson, Lars; Grøtan, Vidar; Vriend, Stefan. (2020) Density-Dependent Adaptive Topography in a Small Passerine Bird, the Collared Flycatcher. The American Naturalist
    Academic article
  • Naves, Rafaela Pereira; Grøtan, Vidar; Prado, Paolo Inacio; Vidal, Edson; Batista, Joao Luis Ferreira. (2020) Tropical forest management altered abundances of individual tree species but not diversity. Forest Ecology and Management
    Academic article
  • Matthews, Kate Layton; Grøtan, Vidar; Hansen, Brage Bremset; Loonen, Maarten J.J.E.; Fuglei, Eva; Childs, Dylan Z.. (2020) Environmental change reduces body condition, but not population growth, in a high arctic herbivore. Ecology Letters
    Academic article
  • Layton-Matthews, Kate; Loonen, Maarten J.J.E.; Hansen, Brage Bremset; Coste, Christophe Francois Daniel; Sæther, Bernt-Erik; Grøtan, Vidar. (2019) Density‐dependent population dynamics of a high Arctic capital breeder, the barnacle goose. Journal of Animal Ecology
    Academic article
  • Hansen, Brage Bremset; Pedersen, Åshild Ønvik; Peeters, Bart; Le Moullec, Mathilde; Albon, Steve D.; Herfindal, Ivar. (2019) Spatial heterogeneity in climate change effects decouples the long‐term dynamics of wild reindeer populations in the high Arctic. Global Change Biology
    Academic article
  • Layton-Matthews, Kate; Hansen, Brage Bremset; Grøtan, Vidar; Fuglei, Eva; Loonen, Maarten J.J.E.. (2019) Contrasting consequences of climate change for migratory geese: Predation, density dependence and carryover effects offset benefits of high‐arctic warming. Global Change Biology
    Academic article
  • Hansen, Brage Bremset; Gamelon, Marlène; Albon, Steve D.; Lee, Aline Magdalena; Stien, Audun; Irvine, Robert Justin. (2019) More frequent extreme climate events stabilize reindeer population dynamics. Nature Communications
    Academic article
  • Marjakangas, Emma-Liina; Abrego, Nerea; Grøtan, Vidar; de Lima, Renato A.F.; Bello, Caroline; Bovendorp, Ricardo S. (2019) Fragmented tropical forests lose mutualistic plant–animal interactions. Diversity and Distributions: A Journal of Conservation Biogeography
    Academic article
  • Ovaskainen, Otso; Tikhonov, Gleb; Dunson, David; Grøtan, Vidar; Engen, Steinar; Sæther, Bernt-Erik. (2017) How are species interactions structured in species-rich communities? A new method for analysing time-series data. Proceedings of the Royal Society of London. Biological Sciences
    Academic article
  • Gamelon, Marlène; Grøtan, Vidar; Nilsson, Anna L. K.; Engen, Steinar; Hurrell, James W.; Jerstad, Kurt. (2017) Interactions between demography and environmental effects are important determinants of population dynamics. Science Advances
    Academic article
  • Sæther, Bernt-Erik; Grøtan, Vidar; Engen, Steinar; Coulson, Tim; Grant, Peter R.; Visser, Marcel E.. (2016) Demographic routes to variability and regulation in bird populations. Nature Communications
    Academic article
  • Sæther, Bernt-Erik; Visser, Marcel E; Grøtan, Vidar; Engen, Steinar. (2016) Evidence for r-and K-selection in a wild bird population: A reciprocal link between ecology and evolution. Proceedings of the Royal Society of London. Biological Sciences
    Academic article
  • Gamelon, Marlène; Grøtan, Vidar; Engen, Steinar; Bjørkvoll, Eirin Marie; Visser, Marcel E.; Sæther, Bernt-Erik. (2016) Density dependence in an age-structured population of great tits: identifying the critical age classes. Ecology
    Academic article
  • Bjørkvoll, Eirin Marie; Lee, Aline Magdalena; Grøtan, Vidar; Sæther, Bernt-Erik; Stien, Audun; Engen, Steinar. (2016) Demographic buffering of life histories? Implications of the choice of measurement scale. Ecology
    Academic article
  • Lee, Aline Magdalena; Bjørkvoll, Eirin Marie; Hansen, Brage Bremset; Albon, Steve D.; Stien, Audun; Sæther, Bernt-Erik. (2015) An integrated population model for a long-lived ungulate: more efficient data use with Bayesian methods. Oikos
    Academic article
  • Bellier, Edwige Louise; Grøtan, Vidar; Engen, Steinar; Schartau, Ann Kristin; Herfindal, Ivar; Finstad, Anders Gravbrøt. (2014) Distance decay of similarity, effects of environmental noise and ecological heterogeneity among species in the spatio-temporal dynamics of a dispersal-limited community. Ecography
    Academic article
  • Grøtan, Vidar; Lande, Russell; Chacon, IA; DeVries, PJ. (2014) Seasonal cycles of diversity and similarity in a Central American rainforest butterfly community. Ecography
    Academic article
  • Hansen, Brage Bremset; Grøtan, Vidar; Aanes, Ronny; Sæther, Bernt-Erik; Stien, Audun; Fuglei, Eva. (2013) Climate Events Synchronize the Dynamics of a Resident Vertebrate Community in the High Arctic. Science
    Academic article
  • Sæther, Bernt-Erik; Engen, Steinar; Grøtan, Vidar. (2013) Species diversity and community similarity in fluctuating environments: parametric approaches using species abundance distributions. Journal of Animal Ecology
    Academic literature review
  • Sæther, Bernt-Erik; Coulson, Tim; Grøtan, Vidar; Engen, Steinar; Altwegg, Res; Armitage, Kenneth B.. (2013) How Life History Influences Population Dynamics in Fluctuating Environments. The American Naturalist
    Academic article
  • Linnerud, Marit; Sæther, Bernt-Erik; Grøtan, Vidar; Engen, Steinar; Noble, DG; Freckleton, RP. (2013) Interspecific differences in stochastic population dynamics explains variation in Taylor's temporal power law. Oikos
    Academic article
  • Reed, TE; Grøtan, Vidar; Jenouvrier, S; Sæther, Bernt-Erik; Visser, ME. (2013) Population Growth in a Wild Bird Is Buffered Against Phenological Mismatch. Science
    Academic article
  • Bellier, Edwige; Grøtan, Vidar; Engen, Steinar; Schartau, Ann Kristin; Diserud, Ola Håvard; Finstad, Anders Gravbrøt. (2012) Combining counts and incidence data: an efficient approach for estimating the log-normal species abundance distribution and diversity indices. Oecologia
    Academic article
  • Grøtan, Vidar; Lande, Russell; Engen, Steinar; Sæther, Bernt-Erik; DeVries, PJ. (2012) Seasonal cycles of species diversity and similarity in a tropical butterfly community. Journal of Animal Ecology
    Academic article
  • Herfindal, Ivar; Drever, Mark C.; Høgda, Kjell Arild; Podruzny, Kevin M.; Nudds, Thomas D.; Grøtan, Vidar. (2012) Landscape heterogeneity and the effect of environmental conditions on prairie wetlands. Landscape Ecology
    Academic article
  • Bjørkvoll, Eirin Marie; Grøtan, Vidar; Aanes, Sondre; Sæther, Bernt-Erik; Engen, Steinar; Aanes, Ronny. (2012) Stochastic Population Dynamics and Life-History Variation in Marine Fish Species. The American Naturalist
    Academic article
  • Engen, Steinar; Grøtan, Vidar; Sæther, Bernt-Erik. (2011) Estimating similarity of communities: a parametric approach to spatio-temporal analysis of species diversity. Ecography
    Academic article
  • Sæther, Bernt-Erik; Grøtan, Vidar; Engen, Steinar; Noble, DG; Freckleton, RP. (2011) Rarity, life history and scaling of the dynamics in time and space of British birds. Journal of Animal Ecology
    Academic article
  • Sæther, Bernt-Erik; Engen, Steinar; Odden, John; Linnell, John D. C.; Grøtan, Vidar; Andrén, Henrik. (2010) Sustainable harvest strategies for age-structured Eurasian lynx populations: The use of reproductive value. Biological Conservation
    Academic article
  • Garel, Mathieu; Solberg, Erling Johan; Sæther, Bernt-Erik; Grøtan, Vidar; Tufto, Jarle; Heim, Morten. (2009) Age, size and spatio-temporal variation in ovulation patterns of a seasonal breeder, the Norwegian moose (Alces alces). The American Naturalist
    Academic literature review
  • Grøtan, Vidar; Sæther, Bernt-Erik; Engen, Steinar; Johan H., van Balen; Perdeck, Albert C.; Visser, Marcel E.. (2009) Spatial and temporal variation in the relative contribution of density dependence, climate variation and migration to fluctuations in the size of great tit populations. Journal of Animal Ecology
    Academic article
  • Sæther, Bernt-Erik; Grøtan, Vidar; Engen, Steinar; Noble, DG; Freckleton, RP. (2009) Critical parameters for predicting population fluctuations of some British passerines. Journal of Animal Ecology
    Academic article
  • Grøtan, Vidar; Sæther, Bernt-Erik; Lillegård, Magnar; Solberg, EJ; Engen, Steinar. (2009) Geographical variation in the influence of density dependence and climate on the recruitment of Norwegian moose. Oecologia
    Academic article
  • Solberg, Erling Johan; Garel, Mathieu; Heim, Morten; Grøtan, Vidar; Sæther, Bernt-Erik. (2008) Lack of compensatory body growth in a high performance moose Alces alces population. Oecologia
    Academic literature review
  • Engen, Steinar; Sæther, Bernt-Erik; Sverdrup-Thygeson, A; Grøtan, Vidar; Ødegaard, F. (2008) Assessment of species diversity from species abundance distributions at different localities. Oikos
    Academic article
  • Sæther, Bernt-Erik; Lillegård, Magnar; Grøtan, Vidar; Drever, Mark C.; Engen, Steinar; Nudds, Thomas D.. (2008) Geographical gradients in the population dynamics of North American prairie ducks. Journal of Animal Ecology
    Academic article
  • Engen, Steinar; Grøtan, Vidar; Halley, Duncan; Nygård, Torgeir. (2008) An efficient multivariate approach for estimating preference when individual observations are dependent. Journal of Animal Ecology
    Academic article
  • Sæther, Bernt-Erik; Engen, Steinar; Grøtan, Vidar; Bregnballe, Thomas; Both, Christiaan; Tryjanowski, Piotr. (2008) Forms of density regulation and (quasi-) stationary distributions of population sizes in birds. Oikos
    Academic article
  • Lillegård, Magnar; Engen, Steinar; Sæther, Bernt-Erik; Grøtan, Vidar; Drever, Mark C.. (2008) Estimation of population parameters from aerial counts of north American mallards: a cautionary tale. Ecological Applications
    Academic article
  • Grøtan, Vidar; Sæther, Bernt-Erik; Filli, Flurin; Engen, Steinar. (2008) Effects of climate on population fluctuations of ibex. Global Change Biology
    Academic article
  • Sæther, Bernt-Erik; Engen, Steinar; Grøtan, Vidar; Fiedler, W; Matthysen, E; Visser, ME. (2007) The extended Moran effect and large-scale synchronous fluctuations in the size of great tit and blue tit populations. Journal of Animal Ecology
    Academic article
  • Sæther, Bernt-Erik; Lillegård, Magnar; Grøtan, Vidar; Filli, F; Engen, Steinar. (2007) Predicting fluctuations of reintroduced ibex populations: the importance of density dependence, environmental stochasticity and uncertain population estimates. Journal of Animal Ecology
    Academic article
  • Solberg, Erling Johan; Heim, Morten; Grøtan, Vidar; Sæther, Bernt-Erik; Garel, Mathieu. (2007) Annual variation in maternal age and calving date generate cohort effects in moose (Alces alces) body mass. Oecologia
    Academic article
  • Sæther, Bernt-Erik; Grøtan, Vidar; Tryjanowski, P.; Barbraud, C; Engen, Steinar; Fulin, M. (2006) Climate and spatio-temporal variation in the population dynamics of a long-distance migrant, the white stork. Journal of Animal Ecology
    Academic article
  • Grøtan, Vidar; Sæther, Bernt-Erik; Engen, Steinar; Solberg, E.J.; Linnell, J.D.C.; Andersen, Reidar. (2005) Climate causes large-scale spatial synchrony in population fluctuations of a temperate herbivore. Ecology
    Academic article
  • Solberg, Erling Johan; Grøtan, Vidar; Rolandsen, Christer M.; Brøseth, Henrik; Brainerd, Scott. (2005) Change-in-sex ratio as an estimator of population size for Norwegian moose Alces alces. Wildlife Biology
    Academic article
  • Solberg, Erling Johan; Grøtan, Vidar; Sæther, Bernt-Erik; Heim, Morten. (2001) Elgens framtidige bestandsstruktur: Velger vi skogens konge eller skogens hellige kyr. Hjorteviltet
    Popular scientific article

Report

  • Eriksen, Lasse Frost; Nilsen, Erlend Birkeland; Ringsby, Thor Harald; Moa, Pål Fossland; Grøtan, Vidar. (2024) Life history traits and demography of a mountain bird under climatic variation. Doktoravhandlinger ved NTNU (2024:90)
    Doctoral dissertation
  • Sandal, Lisa; Grøtan, Vidar; Sæther, Bernt-Erik; Ovaskainen, Otso Tapio. (2023) Spatiotemporal dynamics of avian communitites. NTNU
    Doctoral dissertation
  • Koch, Wouter; Finstad, Anders Gravbrøt; Nilsen, Erlend Birkeland; Grøtan, Vidar; O'Hara, Robert B.. (2022) Improving the citizen science data corpus for science and management. NTNU
    Doctoral dissertation
  • Karlsen, Simen; Hansen, Brage Bremset; Lee, Aline Magdalena; Martin, Ellen Claire; Grøtan, Vidar. (2022) No evidence of overall changes in spatial population synchrony across bird species in North America. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Masters thesis
  • Lenz, Kay Banu; Hansen, Brage Bremset; Fossøy, Frode; Stokke, Bård Gunnar; Grøtan, Vidar; Varpe, Øystein. (2022) The Role of the Arctic Fox in the Breeding Success of the Snow Bunting. NTNU, Department of Biology
    Masters thesis
  • Sætre, Mikael Andreas; Layton-Matthews, Kate; Peeters, Bart; Lee, Aline Magdalena; Grøtan, Vidar; Hansen, Brage Bremset. (2022) Climate change influences reproduction in Arctic breeding geese through altered predator-prey interactions. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Masters thesis
  • Petersen, Tanja Kofod; Austrheim, Gunnar; Speed, James David Mervyn; Grøtan, Vidar. (2021) Biodiversity dynamics in urban areas under changing land-uses. Norwegian University of Science and Technology
    Doctoral dissertation
  • Hilmarsen, Kjerstin Bakken; Grøtan, Vidar; Hansen, Brage Bremset; Stokke, Bård Gunnar; Fossøy, Frode; Varpe, Øystein. (2020) Body mass growth in nestlings of Svalbard snow buntings (Plectrophenax nivalis) in response to seasonal variation in arthropod biomass. NTNU, Dept. of Biology
    Masters thesis
  • Layton-Matthews, Kate; Grøtan, Vidar; Hansen, Brage Bremset; Loonen, Maarten J.J.E.. (2020) Demographic consequences of rapid climate change and density dependence in migratory Arctic geese. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Doctoral dissertation
  • Israelsen, Markus Fjellstad; Nilsen, Erlend Birkeland; Grøtan, Vidar; Bolstad, Geir Hysing. (2019) The effects of habitat size and distance to forest edge on the occupancy dynamics of rock ptarmigan (Lagopus muta) in Norway. NTNU
    Masters thesis
  • Fjelldal, Mari Aas; Hansen, Brage Bremset; Grøtan, Vidar; Layton-Matthews, Kate; Loonen, Maarten J.J.E.. (2019) Family planning in the high Arctic: earlier spring onset advances age at first successful reproduction in barnacle geese. Norges teknisk-naturvitenskaplige universitet
    Masters thesis
  • Marjakangas, Emma-Liina; Abrego, Nerea; Ovaskainen, Otso; Grøtan, Vidar. (2019) Understanding species interactions in the tropics: dynamics within and between trophic levels. Norwegian University of Science and Technology, Faculty of Natural Sciences, Department of Biology
    Doctoral dissertation
  • Valøen, Kristine; Grøtan, Vidar; Hansen, Brage Bremset; Le Moullec, Mathilde; Varpe, Øystein. (2019) Stochastic rain events increase NDVI through moss water content: a High-Arctic field experiment. NTNU
    Masters thesis
  • Lillehaug, Egil; Grøtan, Vidar; Hansen, Brage Bremset; Fossøy, Frode; Stokke, Bård Gunnar; Sandercock, Brett. (2019) Environmental correlates of variation in a holistic analysis of annual offspring production in the high Arctic songbird snow bunting (Plectrophenax nivalis) on Spitsbergen. NTNU, Dept. of Biology
    Masters thesis
  • Sandal, Lisa; Grøtan, Vidar; Le Moullec, Mathilde; Hansen, Brage Bremset. (2017) Spatiotemporal patterns of plant growth in a warming high Arctic: insights from dendrochronology of Salix polaris. NTNU
    Masters thesis
  • Hanne, Haraldsen; Hansen, Brage Bremset; Grøtan, Vidar; Jonsdottir, Ingibjørg. (2017) Effects of experimental winter icing and summer warming on high Arctic tundra vascular plants: a comparison of growth forms. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Masters thesis
  • Grotheim, Marta; Hansen, Brage Bremset; Jonsdottir, Ingibjørg; Grøtan, Vidar; Layton-Matthews, Kate. (2017) Effects of Experimental Icing and Summer Warming on the Polar Willow Salix polaris on Svalbard. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Masters thesis
  • Bjørkvoll, Eirin Marie; Sæther, Bernt-Erik; Grøtan, Vidar; Aanes, Ronny. (2014) Life-history variation and stochastic population dynamics in vertebrates. Norwegian University of Science and Technology
    Doctoral dissertation
  • Bjørkvoll, Eirin Marie; Aanes, Sondre; Grøtan, Vidar; Sæther, Bernt-Erik; Engen, Steinar; Aanes, Ronny. (2011) Beaked redfish and golden redfish: Estimating abundances at age and population dynamical parameters by fitting a stochastic population model to abundance data within a Bayesian framework. ICES Arctic Fisheries Working Group
    Report
  • Grøtan, Vidar. (2006) Temporal and spatial effects of climate fluctuations on population dynamics of vertebrates. NTNU, Institutt for biologi
    Doctoral dissertation
  • Solberg, Erling Johan; Rolandsen, Christer Moe; Heim, Morten; Grøtan, Vidar; Garel, Mathieu; Sæther, Bernt-Erik. (2006) Elgen i Norge sett med jegerøyne. En analyse av jaktmaterialet fra overvå-kingsprogrammet for elg og det samlede sett elg-materialet for perioden 1966-2004. NINA rapport (125)
    Report
  • Grøtan, Vidar. (2003) Large scale synchronization of moose (Alces alces) population dynamics through climate and harvest. [Mangler utgivernavn]
    Thesis at a second degree level

Teaching

Courses

  • BI3082 - Advanced Conservation Biology
  • BI8081 - Advanced Conservation Biology
  • BI8091 - Advanced Biology
  • BI2033 - Population Ecology
  • BI3084 - Applied Population Dynamics for Conservation and Management
  • BI3085 - Biology without borders

Outreach

2023

  • Academic lecture
    Bartra Cabre, Laura; Hansen, Brage Bremset; Lee, Aline Magdalena; Grøtan, Vidar. (2023) Understanding community-dynamic impacts of extreme climatic events: a high-Arctic case study . Leibniz-IZW Academy Wildlife Research and Conservation 2023 , Berlin 2023-09-07 - 2023-09-11

2022

  • Academic lecture
    Bartra Cabré, Laura; Lee, Aline Magdalena; Grøtan, Vidar; Hansen, Brage Bremset. (2022) Community dynamics under climatic perturbations. Centre for Biodiversity Dynamics, NTNU NTNU CBD, SAC meeting , Røros 2022-10-17 - 2022-10-20
  • Academic lecture
    Bartra Cabré, Laura; Hansen, Brage Bremset; Lee, Aline Magdalena; Grøtan, Vidar. (2022) Impacts of more frequent extreme climatic events on community dynamics in the high Arctic. Aarhus University Oikos Nordic Conference 2022 , Aarhus 2022-06-06 - 2022-06-08
  • Academic lecture
    Bartra Cabré, Laura; Hansen, Brage Bremset; Lee, Aline Magdalena; Grøtan, Vidar. (2022) Impacts of more frequent extreme climatic events on community dynamics in the high Arctic. Centre for Biodiversity Dynamics, NTNU NTNU CBD lunch seminars , Trondheim 2022-05-31 - 2022-05-31

2021

  • Poster
    Le Moullec, Mathilde; Acker, Paul; Grøtan, Vidar; Lee, Aline Magdalena; Herfindal, Ivar; O'Hara, Bob. (2021) How can we assess temporal changes in population synchrony?. British Ecological Society Annual Meeting of the British Ecological Society , Liverpool, UK 2021-12-12 - 2021-12-15

2020

  • Academic lecture
    Peeters, Bart; Grøtan, Vidar; Gamelon, Marlène; Veiberg, Vebjørn; Lee, Aline Magdalena; Fryxell, John M. (2020) Harvesting can increase population viability by modifying climate change effects. The fourth conference of the Nordic Society Oikos 2020-03-03 - 2020-03-05
  • Academic lecture
    Peeters, Bart; Grøtan, Vidar; Gamelon, Marlène; Veiberg, Vebjørn; Lee, Aline Magdalena; Fryxell, John M. (2020) Climate-density interactions and the stabilizing effects of harvesting on population dynamics. Evolutionary Demography Society’s 7th Annual Meeting 2020-10-06 - 2020-10-11
  • Academic lecture
    Vriend, Stefan; Gamelon, Marlène; Grøtan, Vidar; Sæther, Bernt-Erik. (2020) Spatial variation in the critical age class of European bird populations. Nordic Society Oikos Nordic Oikos conference 2020 , Reykjavik 2020-03-03 - 2020-05-03
  • Lecture
    Petersen, Tanja Kofod; Austrheim, Gunnar; Speed, James David Mervyn; Grøtan, Vidar. (2020) Biodiversity dynamics in urban areas under changing land-use. British Ecological Society Festival of Ecology 2020-12-14 - 2020-12-18

2019

  • Poster
    Petersen, Tanja Kofod; Austrheim, Gunnar; Speed, James David Mervyn; Grøtan, Vidar. (2019) Land cover determines threatened and alien species richness in a mixed urban-natural municipality. University of Aarhus, University of Copenhagen Biodiversitetssymposiet 2019 , University of Aarhus 2019-01-22 - 2019-01-23
  • Academic lecture
    Vriend, Stefan; Grøtan, Vidar; Gamelon, Marlène; Sæther, Bernt-Erik. (2019) Spatial synchrony in hole-nesting passerine life history traits. British Ecological Society BES Annual Meeting 2019 , Belfast, Northern Ireland 2019-12-10 - 2019-12-13
  • Academic lecture
    Layton-Matthews, Kate; Childs, Dylan Z.; Grøtan, Vidar; Loonen, M. J. J. E; Fuglei, Eva; Hansen, Brage Bremset. (2019) Habitat degradation makes for skinny Arctic barnacle geese: drivers of body mass and population dynamics. British Ecological Society British Ecological Society Annual Conference 2020 , Belfast 2019-12-09 - 2019-12-13
  • Academic lecture
    Hansen, Brage Bremset; Peeters, Bart; Gamelon, Marlène; Lee, Aline Magdalena; Veiberg, Vebjørn; Albon, Steve D.. (2019) Reduced extinction risk by worsening climate and increased harvest: the role of density dependence . Arctic Ungulate Conference , Jokkmokk 2019-08-12 - 2019-08-16

2018

  • Academic lecture
    Layton-Matthews, Kate; Loonen, Maarten J.J.E.; Hansen, Brage Bremset; Grøtan, Vidar. (2018) Density dependence & environmental drivers in a population of high Arctic barnacle geese . University of Lyon Evolutionary Demographic Society annual conference , Lyon 2018-01-08 - 2018-01-10
  • Poster
    Vriend, Stefan; Gamelon, Marlène; Bailey, Liam; Grøtan, Vidar; Sæther, Bernt-Erik. (2018) Spatiotemporal variation in hole-nesting passerine life history across Europe. British Ecological Society British Ecological Society 2018 Annual Meeting , Birmingham 2018-12-16 - 2018-12-19
  • Academic lecture
    Sandal, Lisa; Le Moullec, Mathilde; Grøtan, Vidar; Hansen, Brage Bremset. (2018) Spatiotemporal patterns of plant growth in a rapidly warming high Arctic: a tale of change. NTNU Nordic OIKOS Conference , Trondheim 2018-02-20 - 2018-02-22
  • Poster
    Petersen, Tanja Kofod; Austrheim, Gunnar; Speed, James David Mervyn; Grøtan, Vidar. (2018) Urban Biodiversity - a redlisted refuge or blacklisted gateway. Nordic OIKOS OIKOS 2018 , Claridon Hotel and Congress Center 2018-02-19 - 2018-02-22
  • Academic lecture
    Hansen, Brage Bremset; Pedersen, Åshild Ønvik; Peeters, Bart; Le Moullec, Mathilde; Albon, Steve D.; Sæther, Bernt-Erik. (2018) Spatial heterogeneity buffers synchronizing effects of climate on high-arctic reindeer meta-population dynamics. British Ecological Society Annual Meeting of the British Ecological Society , Birmingham 2018-12-16 - 2018-12-19

2017

  • Lecture
    Le Moullec, Mathilde; Sandal, Lisa; Grøtan, Vidar; Buchwal, Agata; van der Wal, René; Hansen, Brage Bremset. (2017) Spatiotemporal patterns of shrub growth in a warming high Arctic: a tale of diminishing regional spatial synchrony. British Ecological Society Conference: Ecology Across Border , Gent 2017-12-11 - 2017-12-14
  • Poster
    Layton-Matthews, Kate; Hansen, Brage Bremset; Loonen, Maarten J.J.E.; Grøtan, Vidar. (2017) Density, climate and trophic interaction effects on high arctic barnacle geese. British Ecological Society British Ecological Society Annual Conference , Ghent 2017-12-11 - 2017-12-15
  • Academic lecture
    Hansen, Brage Bremset; Gamelon, Marlène; Albon, Steve D.; Stien, Audun; Irvine, Justin R; Sæther, Bernt-Erik. (2017) More frequent extreme climate events stabilize wild reindeer dynamics in the high Arctic . British Ecological Society British Ecological Society Annual Meeting , Ghent 2017-12-11 - 2017-12-14
  • Academic lecture
    Le Moullec, Mathilde; Sandal, Lisa; Grøtan, Vidar; Hansen, Brage Bremset. (2017) Spatiotemporal patterns of shrub growth in a warming high Arctic: a tale of diminishing regional spatial synchrony. UNIS Invitert gjesteforelesning , Longyearbyen 2017-11-15 -
  • Academic lecture
    Le Moullec, Mathilde; Sandal, Lisa; Grøtan, Vidar; Hansen, Brage Bremset. (2017) Spatiotemporal patterns of shrub growth in a warming high Arctic: a tale of diminishing regional spatial synchrony. UiT Invitert gjesteforelesning , Tromsø 2017-11-17 -
  • Academic lecture
    Le Moullec, Mathilde; Sandal, Lisa; Grøtan, Vidar; Hansen, Brage Bremset. (2017) Spatiotemporal patterns of shrub growth in a warming high Arctic: a tale of diminishing regional spatial synchrony. KU Leuven Invitert gjesteforelesning , Leuven 2017-12-08 -
  • Academic lecture
    Layton-Matthews, Kate; Loonen, Maarten J.J.E.; Hansen, Brage Bremset; Grøtan, Vidar. (2017) Density and environmental effects on barnacle goose population dynamics. Research Council Norway Svalbard Science Conference , Fornebu 2017-11-06 - 2017-11-08

2015

  • Academic lecture
    Hansen, Brage Bremset; Grøtan, Vidar. (2015) Global declines of caribou and reindeer?. Arctic Ungulate Conference , Røros 2015-08-16 - 2015-08-21

2013

  • Academic lecture
    Bjørkvoll, Eirin Marie; Lee, Aline Magdalena; Hansen, Brage Bremset; Grøtan, Vidar; Sæther, Bernt-Erik; Engen, Steinar. (2013) Svalbard Reindeer. Integrated population modeling. Swiss Ornithological Institute Bayesian population analysis using WinBUGS , Sempach 2013-08-12 - 2013-08-16

2011

  • Academic lecture
    Grøtan, Vidar; Engen, Steinar. (2011) Inference for spatial processes based on areal unit data. British Ecological Society BES Annual Meeting , Sheffield 2011-09-12 - 2011-09-14
  • Academic lecture
    Bjørkvoll, Eirin Marie; Aanes, Sondre; Grøtan, Vidar; Sæther, Bernt-Erik; Engen, Steinar; Aanes, Ronny. (2011) Assessment of beaked redfish: Fitting a stochastic population model within a Bayesian framework. Institute of Marine Research Assessment forum , Bergen 2011-11-08 - 2011-11-08
  • Academic lecture
    Bjørkvoll, Eirin Marie; Grøtan, Vidar; Aanes, Sondre; Sæther, Bernt-Erik; Engen, Steinar; Aanes, Ronny. (2011) Stochastic population dynamics of beaked redfish (Sebastes mentella). Institutt for Biologi, NTNU PhD conference , Trondheim 2011-11-10 - 2011-11-10
  • Academic lecture
    Bjørkvoll, Eirin Marie; Grøtan, Vidar; Aanes, Sondre; Sæther, Bernt-Erik; Engen, Steinar; Aanes, Ronny. (2011) Stochastic population dynamics of beaked redfish (Sebastes mentella). International Council for Exploration of the Sea ICES Annual Science Conference , Gdansk 2011-09-19 - 2011-09-23

2010

  • Academic lecture
    Grøtan, Vidar; Engen, Steinar; Sæther, Bernt-Erik. (2010) A parametric approach for estimating the similarity of communities. Centre for Conservation Biology Sustainable Conservation: Bridging the gap between disciplines , Trondheim 2010-03-15 - 2010-03-18

2008

  • Academic lecture
    Grøtan, Vidar; Sæther, Bernt-Erik; Lillegård, Magnar; Engen, Steinar. (2008) Predicting the distribution of future population fluctuations. Ecological Society of America Ecological Society of America Annual Meeting , Milwaukee 2008-08-02 - 2008-08-08

2005

  • Poster
    Grøtan, Vidar; Sæther, Bernt-Erik; Engen, Steinar; Solberg, Erling Johan; Linnell, John D. C.; Andersen, Reidar. (2005) Climate causes large scale spatial synchrony in population fluctuations of a temperate herbivore. The Ecological Society of America The Ecological Society of America Annual Meeting , Montreal 2005-08-08 - 2005-08-12

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