Background and activities
Affiliation
Centre for Biodiversity Dynamics (CBD) http://www.ntnu.edu/cbd
Dept. of Biology, NV Faculty, NTNU
Research interests
Population ecology, population dynamics, community ecology, community dynamics, behavioural ecology, population genetics, ancient DNA, trophic (e.g. plant-herbivore) interactions, climate change, Arctic, Svalbard, Svalbard reindeer, barnacle geese, Arctic fox, demographic modelling.
Current research
PI for the Dynamics of Arctic Ecosystems group, a part of Community Dynamics at CBD. PI for the project "Community dynamics in a rapidly warming high Arctic: trophic synchrony in time and space (INSYNC)", financed by the Research Council Norway (FRIPRO program) for the period 2018-2021. The goal is to explore how climate change shapes spatial and temporal community dynamics - across species and trophic levels - on the high Arctic Svalbard tundra. Project partners include Univ. Groningen, Univ. Aberdeen, Univ. Iceland, CNRS Montpellier, Norwegian Meteorological Institute, University Centre in Svalbard (UNIS). Follow the project on twitter @BrageBH, youtube and ResearchGate.
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
Journal publications
- (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. vol. 13.
- (2018) Annual ring growth of a widespread high arctic shrub reflects past fluctuations in community‐level plant biomass. Journal of Ecology.
- (2018) Spatiotemporal patterns of rain-on-snow and basal ice in high Arctic Svalbard: detection of a climate-cryosphere regime shift. 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).