Background and activities
Centre for Biodiversity Dynamics (CBD) http://www.ntnu.edu/cbd
Main research interests
Population ecology, community ecology, behavioural ecology, trophic (e.g. plant-herbivore) interactions.
Current main focus
The project "Predicting effects of climate change on Svalbard reindeer population dynamics - a mechanistic approach" (REINCLIM) has received funding for the period 2012-2015 from the Norwegian Research Council (POLARPROG programme). The goal is to apply a multi-disciplinary approach to understand and predict climate change effects on arctic ungulates, using high-arctic reindeer populations at Svalbard as a model system. REINCLIM is run by CBD at NTNU (Brage B. Hansen), and project partners include the Norwegian Meteorological Institute, James Hutton Institute, University of Aberdeen, Norwegian Institute for Nature Research, Norwegian Polar Institute, Northern Research Institute, Norwegian University of Life Sciences, and the University Centre in Svalbard.
Scientific, academic and artistic work
A selection of recent journal publications, artistic productions, books, including book and report excerpts. See all publications in the database
- (2018) A new NDVI measure that overcomes data sparsity in cloud-covered regions predicts annual variation in ground-based estimates of high-arctic plant productivity. Environmental Research Letters.
- (2017) Contrasting effects of summer and winter warming on body mass explain population dynamics in a food-limited Arctic herbivore. Global Change Biology. vol. 23 (4).
- (2017) Cratering behaviour and faecal C:N ratio in relation to seasonal snow-pack characteristics in a High-Arctic ungulate. Polar Research. vol. 36 (1).
- (2017) Ungulate population monitoring in an open tundra landscape: distance sampling versus total counts. Wildlife Biology. vol. 2017.
- (2017) Climate and density dependence cause changes in adult sex ratio in a large Arctic herbivore. Ecosphere. vol. 8 (2).
- (2016) Demographic buffering of life histories? Implications of the choice of measurement scale. Ecology. vol. 97 (1).
- (2016) Behavioral buffering of extreme weather events in a high-Arctic herbivore. Ecosphere. vol. 7 (6).
- (2016) Experimental icing affects growth, mortality, and flowering in a high Arctic dwarf shrub. Ecology and Evolution. vol. 6 (7).
- (2016) Changes in greening in the high Arctic: Insights from a 30 year AVHRR max NDVI dataset for Svalbard. Environmental Research Letters. vol. 11 (10).
- (2015) An integrated population model for a long-lived ungulate: more efficient data use with Bayesian methods. Oikos. vol. 124 (6).
- (2014) Warmer and wetter winters: characteristics and implications of an extreme weather event in the High Arctic. Environmental Research Letters. vol. 9 (11).
- (2014) Habituation to humans in a predator-free wild ungulate. Polar Biology. vol. 38 (2).
- (2014) Svalbardreinen - økologi, parasitter og sjukdommer. Norsk Veterinærtidsskrift. vol. 126 (2).
- (2013) Climate Events Synchronize the Dynamics of a Resident Vertebrate Community in the High Arctic. Science. vol. 339 (6117).
- (2012) Kelp and seaweed feeding by High-Arctic wild reindeer under extreme winter conditions. Polar Research. vol. 31.
- (2011) Climate, icing and wild arctic reindeer: past relationships and future prospects. Ecology. vol. 92 (10).
- (2010) Feeding-crater selection by high-arctic reindeer facing ice-blocked pastures. Canadian Journal of Zoology. vol. 88 (2).
- (2010) Partial seasonal migration in high-arctic Svalbard reindeer (Rangifer tarandus platyrhynchus). Canadian Journal of Zoology. vol. 88 (12).
- (2009) Winter habitat-space use in a large arctic herbivore facing contrasting forage abundance. Polar Biology. vol. 32 (7).
- (2009) Functional response in habitat selection and the tradeoffs between foraging niche components in a large herbivore. Oikos. vol. 118 (6).