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. volum 201 (4).
  Academic article

2022

• Layton-Matthews, Kate; Vriend, Stefan J.G.; Grøtan, Vidar; Loonen, Maarten J.J.E.; Sæther, Bernt-Erik; Fuglei, Eva; Hansen, Brage Bremset. (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.; Albon, Steve D.; Sæther, Bernt-Erik; Engen, Steinar; Loe, Leif Egil; Hansen, Brage Bremset. (2022) Harvesting can stabilise population fluctuations and buffer the impacts of extreme climatic events. Ecology Letters. volum 25 (4).
  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. volum 103 (8).
  Academic article
• 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. (2022) Temperature synchronizes temporal variation in laying dates across European hole-nesting passerines. Ecology.
  Academic article

2021

• 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. volum 198 (1).
  Academic article
• Marjakangas, Emma-Liina; Ovaskainen, Otso; Abrego, Nerea; Grøtan, Vidar; de Oliveira, Alexandre A.; Prado, Paulo I.; de Lima, Renato A. F.. (2021) Co-occurrences of tropical trees in eastern South America: disentangling abiotic and biotic forces. Plant Ecology. volum 222.
  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
• 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). volum 39 (4).
  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. volum 2 (1).
  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. volum 16 (4).
  Academic article
• Hansen, Brage Bremset; Grøtan, Vidar; Herfindal, Ivar; Lee, Aline Magdalena. (2020) The Moran effect revisited: spatial population synchrony under global warming. Ecography. volum 43.
  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. volum 89.
  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. volum 129.
  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. volum 24 (2).
  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. volum 475.
  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. volum 10.
  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. volum 197 (1).
  Academic article

2019

• Hansen, Brage Bremset; Gamelon, Marlène; Albon, Steve D.; Lee, Aline Magdalena; Stien, Audun; Irvine, Robert Justin; Sæther, Bernt-Erik; Loe, Leif Egil; Ropstad, Erik; Veiberg, Vebjørn; Grøtan, Vidar. (2019) More frequent extreme climate events stabilize reindeer population dynamics. Nature Communications. volum 10 (1).
  Academic article
• Hansen, Brage Bremset; Pedersen, Åshild Ønvik; Peeters, Bart; Le Moullec, Mathilde; Albon, Steve D.; Herfindal, Ivar; Sæther, Bernt-Erik; Grøtan, Vidar; Aanes, Ronny. (2019) Spatial heterogeneity in climate change effects decouples the long‐term dynamics of wild reindeer populations in the high Arctic. Global Change Biology. volum 25 (11).
  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
• 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. volum 88 (8).
  Academic article
• Marjakangas, Emma-Liina; Abrego, Nerea; Grøtan, Vidar; de Lima, Renato A.F.; Bello, Caroline; Bovendorp, Ricardo S; Laurence, Culot; Hasui, Érica; Lima, Fernando; Muylaert, Renata Lara; Niebuhr, Bernardo Brandão; Oliveira, Alexandre A.; Pereira, Lucas Augusto; Prado, Paulo I.; Stevens, Richard D.; Vancine, Maurício Humberto; Ribeiro, Milton Cezar; Galetti, Mauro; Ovaskainen, Otso. (2019) Fragmented tropical forests lose mutualistic plant–animal interactions. Diversity and Distributions: A journal of biological invasions and biodiversity. volum 00.
  Academic article

2017

• Gamelon, Marlène; Grøtan, Vidar; Nilsson, Anna L. K.; Engen, Steinar; Hurrell, James W.; Jerstad, Kurt; Phillips, Adam S.; Røstad, Ole Wiggo; Slagsvold, Tore; Walseng, Bjørn; Stenseth, Nils Christian; Sæther, Bernt-Erik. (2017) Interactions between demography and environmental effects are important determinants of population dynamics. Science Advances. volum 3 (2).
  Academic article
• Ovaskainen, Otso; Tikhonov, Gleb; Dunson, David; Grøtan, Vidar; Engen, Steinar; Sæther, Bernt-Erik; Abrego, Nerea. (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. volum 284 (1855).
  Academic article

2016

• Bjørkvoll, Eirin Marie; Lee, Aline Magdalena; Grøtan, Vidar; Sæther, Bernt-Erik; Stien, Audun; Engen, Steinar; Albon, Steve D.; Loe, Leif Egil; Hansen, Brage Bremset. (2016) Demographic buffering of life histories? Implications of the choice of measurement scale. Ecology. volum 97 (1).
  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. volum 97 (9).
  Academic article
• Sæther, Bernt-Erik; Grøtan, Vidar; Engen, Steinar; Coulson, Tim; Grant, Peter R.; Visser, Marcel E.; Brommer, Jon E.; Grant, B. Rosemary; Gustafsson, Lars; Hatchwell, Ben J.; Jerstad, Kurt; Karell, Patrik; Pietiäinen, Hannu; Roulin, Alexandre; Røstad, Ole Wiggo; Weimerskirch, Henri. (2016) Demographic routes to variability and regulation in bird populations. Nature Communications. volum 7.
  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. volum 283 (1829).
  Academic article

2015

• Lee, Aline Magdalena; Bjørkvoll, Eirin Marie; Hansen, Brage Bremset; Albon, Steve D.; Stien, Audun; Sæther, Bernt-Erik; Engen, Steinar; Veiberg, Vebjørn; Loe, Leif Egil; Grøtan, Vidar. (2015) An integrated population model for a long-lived ungulate: more efficient data use with Bayesian methods. Oikos. volum 124 (6).
  Academic article

2014

• 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. volum 37 (2).
  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. volum 37 (5).
  Academic article

2013

• Hansen, Brage Bremset; Grøtan, Vidar; Aanes, Ronny; Sæther, Bernt-Erik; Stien, Audun; Fuglei, Eva; Ims, Rolf Anker; Yoccoz, Nigel; Pedersen, Åshild Ønvik. (2013) Climate Events Synchronize the Dynamics of a Resident Vertebrate Community in the High Arctic. Science. volum 339 (6117).
  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. volum 122 (8).
  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. volum 340 (6131).
  Academic article
• Sæther, Bernt-Erik; Coulson, Tim; Grøtan, Vidar; Engen, Steinar; Altwegg, Res; Armitage, Kenneth B.; Barbraud, Christophe; Becker, Peter H.; Blumstein, Daniel T.; Dobson, F. Stephen; Festa-Bianchet, Marco; Gaillard, Jean-Michel; Jenkins, Andrew; Jones, C; Nicoll, MAC; Norris, K; Oli, Madan K.; Ozgul, Arpat; Weimerskirch, Henri. (2013) How Life History Influences Population Dynamics in Fluctuating Environments. The American Naturalist. volum 182 (6).
  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. volum 82 (4).
  Academic literature review

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. volum 170 (2).
  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. volum 180 (3).
  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. volum 81 (3).
  Academic article
• Herfindal, Ivar; Drever, Mark C.; Høgda, Kjell Arild; Podruzny, Kevin M.; Nudds, Thomas D.; Grøtan, Vidar; Sæther, Bernt-Erik. (2012) Landscape heterogeneity and the effect of environmental conditions on prairie wetlands. Landscape Ecology. volum 27 (10).
  Academic article

2011

• 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. 2011.
  Report
• Engen, Steinar; Grøtan, Vidar; Sæther, Bernt-Erik. (2011) Estimating similarity of communities: a parametric approach to spatio-temporal analysis of species diversity. Ecography. volum 34 (2).
  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. volum 80 (1).
  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. volum 143 (9).
  Academic article

2009

• 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. volum 161 (4).
  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. volum 173 (1).
  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. volum 78 (2).
  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. volum 78 (5).
  Academic article

2008

• 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. volum 77 (5).
  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. volum 158 (3).
  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. volum 117 (5).
  Academic article
• Grøtan, Vidar; Sæther, Bernt-Erik; Filli, Flurin; Engen, Steinar. (2008) Effects of climate on population fluctuations of ibex. Global Change Biology. volum 14.
  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. volum 18 (1).
  Academic article
• Sæther, Bernt-Erik; Engen, Steinar; Grøtan, Vidar; Bregnballe, Thomas; Both, Christiaan; Tryjanowski, Piotr; Leivits, Agu; Wright, Jonathan; Møller, Anders Pape; Visser, Marcel E.; Winkel, Wolfgang. (2008) Forms of density regulation and (quasi-) stationary distributions of population sizes in birds. Oikos. volum 117 (8).
  Academic article
• Sæther, Bernt-Erik; Lillegård, Magnar; Grøtan, Vidar; Drever, Mark C.; Engen, Steinar; Nudds, Thomas D.; Podruzny, Kevin M.. (2008) Geographical gradients in the population dynamics of North American prairie ducks. Journal of Animal Ecology. volum 77 (5).
  Academic article

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. volum 154 (2).
  Academic article
• Sæther, Bernt-Erik; Engen, Steinar; Grøtan, Vidar; Fiedler, W; Matthysen, E; Visser, ME; Wright, Jonathan; Moller, AP; Adriaensen, F; Van Balen, H; Balmer, D; Mainwaring, MC; McCleery, RH; Pampus, M; Winkel, W. (2007) The extended Moran effect and large-scale synchronous fluctuations in the size of great tit and blue tit populations. Journal of Animal Ecology. volum 76.
  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. volum 76.
  Academic article

2006

• Grøtan, Vidar. (2006) Temporal and spatial effects of climate fluctuations on population dynamics of vertebrates. 2006. ISBN 82-471-8179-7.
  Doctoral dissertation
• Solberg, Erling Johan; Rolandsen, Christer Moe; Heim, Morten; Grøtan, Vidar; Garel, Mathieu; Sæther, Bernt-Erik; Nilsen, Erlend Birkeland; Austrheim, Gunnar; Herfindal, Ivar. (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. 2006. ISBN 82-426-1674-4. 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

• Grøtan, Vidar; Sæther, Bernt-Erik; Engen, Steinar; Solberg, E.J.; Linnell, J.D.C.; Andersen, Reidar; Brøseth, H; Lund, E. (2005) Climate causes large-scale spatial synchrony in population fluctuations of a temperate herbivore. Ecology. volum 86.
  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. volum 11 (2).
  Academic article

2003

• Grøtan, Vidar. (2003) Large scale synchronization of moose (Alces alces) population dynamics through climate and harvest. 2003.
  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