Brage Bremset Hansen
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
Displaying a selection of activities. See all publications in the database
Journal publications
- (2020) High-Arctic family planning: earlier spring onset advances age at first reproduction in barnacle geese. Biology Letters. vol. 16 (4).
- (2019) Spatiotemporal patterns of rain-on-snow and basal ice in high Arctic Svalbard: detection of a climate-cryosphere regime shift. Environmental Research Letters. vol. 14.
- (2019) More frequent extreme climate events stabilize reindeer population dynamics. Nature Communications. vol. 10 (1).
- (2019) Reindeer turning maritime: Ice-locked tundra triggers changes in dietary niche utilization. Ecosphere. vol. 10 (4).
- (2019) Spatial heterogeneity in climate change effects decouples the long‐term dynamics of wild reindeer populations in the high Arctic. Global Change Biology. vol. 25 (11).
- (2019) Contrasting consequences of climate change for migratory geese: Predation, density dependence and carryover effects offset benefits of high‐arctic warming. Global Change Biology.
- (2019) Density‐dependent population dynamics of a high Arctic capital breeder, the barnacle goose. Journal of Animal Ecology. vol. 88 (8).
- (2019) A Century of Conservation: The Ongoing Recovery of Svalbard Reindeer. Journal of Wildlife Management. vol. 83 (8).
- (2019) Sea ice loss increases genetic isolation in a high Arctic ungulate metapopulation. Global Change Biology. vol. 26 (4).
- (2018) Vinteren 2017–18 er den varmeste noensinne registrert i Arktis. Aftenposten Vitenskap.
- (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. vol. 107 (1).
- (2018) Til sjøs eller til fjells? Vinterbeite i et endret arktisk landskap. Villreinen.
- (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) Kjønnsdiskriminerende klima. Villreinen.
- (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) Varmere, våtere, villere svalbardvintre. Svalbardposten. vol. 2014 (46).
- (2014) Warm, wet and wild. Svalbardposten.
- (2014) Habituation to humans in a predator-free wild ungulate. Polar Biology. vol. 38 (2).
- (2014) Warmer and wetter winters: characteristics and implications of an extreme weather event in the High Arctic. Environmental Research Letters. vol. 9 (11).
- (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).
- (2009) Scale dependency and functional response in moose habitat selection. Ecography. vol. 32 (5).
- (2007) Ungulate impact on vegetation in a two-level trophic system. Polar Biology. vol. 30.
Report/dissertation
- (2019) Towards rainy Arctic winters: effects of experimental icing on tundra plants and their soil conditions. 2019. MET report (08/2019).
- (2019) Svalbard reindeer (Rangifer tarandus platyrhynchus). A status report. 2019. ISBN 978-82-7666-427-0. Rapportserie (Norsk polarinstitutt) (151).
- (2019) Human impacts on the distribution, abundance and population genetics of the Svalbard reindeer. 2019.
- (2018) When ground-ice replaces fjord-ice: results from a study of GPS-collared Svalbard reindeer females. 2018. ISBN 978-82-7666-421-8. Norwegian Polar Institute Brief Report Series (049).
- (2018) Where do trophic interactions happen? A spatial assessment of shared habitat between the three Svalbard herbivores: Svalbard reindeer, Svalbard rock ptarmigan, and pink-footed geese. 2018.
- (2017) Jakt på svalbardrein – hva er naturlige grenser for fellingsområdene?. 2017.
- (2017) Klimaeffektar på svalbardreinens kalvingstidspunkt. 2017. ISBN 978-82-426-2999-9. NINA rapport (1311).
- (2015) Varmere og våtere svalbardvintre: konsekvenser for natur og samfunn. 2015. MET report (20).
- (2014) Jegernes egne data. Analyser av jaktstatistikk og kjevemateriale fra svalbardrein. 2014. ISBN 978 82 7666 304 4. Norwegian Polar Institute Brief Report Series (027).
- (2012) Material from harvested Svalbard reindeer: Evaluation of the material, the data and their areas of application for research and management. 2012. ISBN 978-82-7666-288-7. Norwegian Polar Institute Brief Report Series (24).
- (2008) The Svalbard reindeer (Rangifer tarandus platyrhynchus) and its food base: plant-herbivore interactions in a high-arctic ecosystem. 2008.
- (2002) Effects of forage depletion on spatial use and feeding strategy in the high arctic Svalbard reindeer (Rangifer tarandus platyrhynchus). 2002.