2023

• Lande, Russell Scott; Grøtan, Vidar; Engen, S; 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

2022

• 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
• 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
• 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
• 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
• 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
• 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
• 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
• 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

2021

• 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
• 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
• 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; 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

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
• Hansen, Brage Bremset; Grøtan, Vidar; Herfindal, Ivar; Lee, Aline Magdalena. (2020) The Moran effect revisited: spatial population synchrony under global warming. Ecography
  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
• 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
• 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
• 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
• 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
• 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
• 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
• 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

• 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
• 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
• 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
• 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
• 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
• 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 biological invasions and biodiversity
  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

2017

• 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
• 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
• 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

• 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
• 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

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

• 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
• 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
• 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
• 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
• 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

• 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
• 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
• 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
• 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

2011

• 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
• 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

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

• 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
• 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
• 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
• 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

2008

• 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
• 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
• 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
• Grøtan, Vidar; Sæther, Bernt-Erik; Filli, Flurin; Engen, Steinar. (2008) Effects of climate on population fluctuations of ibex. Global Change Biology
  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
• 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
• 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

2007

• 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; 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

2006

• 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
• 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

2005

• 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
• 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

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