Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2023
Authors
Line Johansen Liv Guri Velle Annette Bär Marie Vestergaard Henriksen Pål Thorvaldsen Dag-Inge Øien Liv Byrkjeland Sigrun AuneAbstract
No abstract has been registered
Authors
Mélanie Spedener Anders Nielsen Marie Vestergaard Henriksen Gunnar Austrheim Karen Marie Mathisen Barbara ZimmermannAbstract
No abstract has been registered
Authors
Mélanie Spedener Karen Marie Mathisen Marie Vestergaard Henriksen Anders Nielsen Gunnar Austrheim Barbara ZimmermannAbstract
No abstract has been registered
Authors
Linn Vassvik Anders Nielsen Erik Trond Aschehoug Bjørn Arild Hatteland Joseph Chipperfield Michael P. D. GarrattAbstract
No abstract has been registered
Abstract
Questions During the winter of 2014, an intense drought combined with sub-zero temperatures resulted in a massive Calluna dieback in Norwegian heathlands. We studied the initial vegetation recovery under two management approaches: natural recovery and prescribed burning. We hypothesized that natural recovery will be slower in more drought-affected sites, whereas burning will facilitate post-fire recovery in all sites by effectively removing dead and damaged heath. Both natural recovery and post-fire succession will be slower in the north. Location Calluna heath in seven sites spanning an approx. 600-km latitudinal gradient along the coast of Norway (60.22–65.69° N). Methods After a natural drought, 10 permanent plots per site were either burnt or left for natural recovery. Vegetation data were recorded annually in 2016 (pre-fire) and 2017–2019 (post-fire) reflecting a factorial repeated-measures design (n = 280). The data were analyzed using mixed-effects models. Results Two years after the drought, we observed high but variable Calluna damage and mortality. Over the four years of study, damaged Calluna recovered, whereas dead Calluna showed little recovery. Both the extent of the damage and mortality, as well as the rate of natural recovery, are only weakly related to site climate or environmental factors. Fire efficiently removed dead and damaged Calluna and facilitated post-fire successional dynamics and recovery in a majority of sites. Conclusions Extreme winter drought resulted in substantial and often persistent damage and dieback on Calluna along the latitudinal gradient. In sites with high mortality, prescribed burning removed the dead biomass and, in some cases, facilitated vegetation recovery. Traditional heathland management, which uses burning to facilitate all-year grazing by Old Norse sheep in Atlantic coastal heathlands, can be an efficient tool to mitigate dieback events and more generally to increase resistance to and resilience after extreme drought events in the future.
Authors
Linn VassvikAbstract
No abstract has been registered
Authors
Linn VassvikAbstract
No abstract has been registered
Authors
Ruben Erik Roos Johan Asplund Tone Birkemoe Aud Helen Halbritter Rechsteiner Siri Lie Olsen Linn Vassvik Kristel van Zuijlen Kari KlanderudAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Svenja B. KroegerAbstract
No abstract has been registered