Browsing Brage NMBU by Author "Roos, Ruben Erik"
Now showing items 1-12 of 12
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Comparing distribution of willow psyllids (Cacopsylla spp.) on Salix lapponum in 2018 with 1995 along an alpine altitudinal gradient
Selvig, Kristoffer (Master thesis, 2019)The psyllid (Cacopsylla spp.) population on Salix lapponum in the alpine areas of southern Norway, in an altitudinal gradient between Haugastøl and Finse, were thoroughly studied in 1995. The results were presented and ... -
Contrasting drivers of community‐level trait variation for vascular plants, lichens and bryophytes across an elevational gradient
Roos, Ruben Erik; van Zuijlen, Kristel; Birkemoe, Tone; Klanderud, Kari; Lang, Simone; Bokhorst, Stef; Wardle, David A.; Asplund, Johan (Peer reviewed; Journal article, 2019)Across environmental gradients, community‐level functional traits of plants can change due to species turnover, intraspecific variation and their covariation. Studies on vascular plants suggest that species turnover is the ... -
Divergent responses of functional diversity to an elevational gradient for vascular plants, bryophytes and lichens
Asplund, Johan; van Zuijlen, Kristel; Roos, Ruben Erik; Birkemoe, Tone; Klanderud, Kari; Lang, Simone; Wardle, David A. (Peer reviewed; Journal article, 2021)Question: Cold environments are stressful for vascular plants, and stress-tolerant non-vascular photoautotrophs, e.g. bryophytes and lichens, become relatively more important as competition from vascular plants decreases ... -
Effect of Elevation Differences in Alpine Insect Activity on Silene Acaulis at Finse, Norway
Hovde, Krister (Master thesis, 2021)Global annual average temperature has increased since the industrial revolution and is predicted to continue to increase in the future resulting in altered species distributions. Alpine ecosystems are particularly vulnerable ... -
Functional traits across primary producer groups and their effects on micro-arthropod communities in alpine Norway
Roos, Ruben Erik (PhD Thesis;2019:71, Doctoral thesis, 2019)The vegetation of alpine ecosystems, i.e. those above the elevation of the tree line, consists not only of vascular plants, but also of non-vascular primary producers such as lichens and bryophytes. The use of functional ... -
Intraspecific trait variability is a key feature underlying high Arctic plant community resistance to climate warming
Jonsdottir, Ingibjørg; Halbritter Rechsteiner, Aud Helen; Christiansen, Casper Tai; Althuizen, Inge; Haugum, Siri Vatsø; Henn, Jonathan J.; Björnsdóttir, Katrín; Maitner, Brian Salvin; Malhi, Yadvinder; Michaletz, Sean T.; Roos, Ruben Erik; Klanderud, Kari; Lee, Hanna; Enquist, Brian J.; Vandvik, Vigdis (Peer reviewed; Journal article, 2022)In the high Arctic, plant community species composition generally responds slowly to climate warming, whereas less is known about the community functional trait responses and consequences for ecosystem functioning. The ... -
Legacy effects of experimental environmental change on soil micro-arthropod communities
Roos, Ruben Erik; Birkemoe, Tone; Asplund, Johan; L'Uptácik, Peter; Raschmanová, Natália; Alatalo, Juha M.; Olsen, Siri Lie; Klanderud, Kari (Peer reviewed; Journal article, 2020)Global change experiments such as experimental warming and nutrient addition strongly affect the structure and functioning of high latitude and altitude ecosystems. However, it is often unknown to what extend such effects ... -
Multiscale mapping of plant functional groups and plant traits in the High Arctic using field spectroscopy, UAV imagery and Sentinel-2A data
Thomson, Eleanor R.; Spiegel, Marcus P.; Althuizen, Inge; Bass, Polly; Chen, Shuli; Chmurzynski, Adam; Rechsteiner, Aud Helen Halbritter; Henn, Jonathan J.; Jónsdóttir, Ingibjörg S.; Klanderud, Kari; Li, Yaoqi; Maitner, Brian S.; Michaletz, Sean T.; Niittynen, Pekka; Roos, Ruben Erik; Telford, Richard James; Enquist, Brian J.; Vandvik, Vigdis; Macias-Fauria, Marc; Malhi, Yadvinder (Peer reviewed; Journal article, 2021) -
Parasitoids indicate major climate-induced shifts in arctic communities
Kankaanpää, Tuomas; Vesterinen, Eero; Hardwick, Bess; Schmidt, Niels M.; Andersson, Tommi; Aspholm, Paul E.; Barrio, Isabel C.; Beckers, Niklas; Bêty, Joël; Birkemoe, Tone; DeSiervo, Melissa; Drotos, Katherine H.I.; Ehrich, Dorothee; Gilg, Olivier; Gilg, Vladimir; Hein, Nils; Høye, Toke T.; Jakobsen, Kristian M.; Jodouin, Camille; Jorna, Jesse; Kozlov, Mikhail V.; Kresse, Jean-Claude; Leandri-Breton, Don-Jean; Lecomte, Nicolas; Loonen, Maarten; Marr, Philipp; Monckton, Spencer K.; Olsen, Maia; Otis, Josée-Anne; Pyle, Michelle; Roos, Ruben Erik; Raundrup, Katrine; Rozhkova, Daria; Sabard, Brigitte; Sokolov, Aleksandr; Sokolova, Natalia; Solecki, Anna M.; Urbanowicz, Christine; Villeneuve, Catherine; Vyguzova, Evgenya; Zverev, Vitali; Roslin, Tomas (Peer reviewed; Journal article, 2020) -
Plant traits and associated data from a warming experiment, a seabird colony, and along elevation in Svalbard
Vandvik, Vigdis; Halbritter, Aud Helen; Althuizen, Inge; Christiansen, Casper Tai; Henn, Jonathan Jeffrey; Jonsdottir, Ingibjorg Svala; Klanderud, Kari; Macias-Fauria, Marc; Malhi, Yadvinder; Maitner, Brian Salvin; Michaletz, Sean T.; Roos, Ruben Erik; Telford, Richard James; Bass, Polly; Björnsdóttir, Katrin; Bustamante, Lucely Lucero Vilca; Chmurzynski, Adam; Chen, Shuli; Haugum, Siri Vatsø; Kemppinen, Julia; Lepley, Kai; Li, Yaoqi; Linabury, Mary; Matos, Ilaine Silveira; Neto-Bradley, Barbara M.; Ng, Molly; Niittynen, Pekka; Hjortland Östman, Silje Andrea; Pankova, Karolina; Roth, Nina; Castorena, Matiss; Spiegel, Marcus P.; Thomson, Eleanor R.; Vågenes, Alexander Sæle; Enquist, Brian J. (Peer reviewed; Journal article, 2023)The Arctic is warming at a rate four times the global average, while also being exposed to other global environmental changes, resulting in widespread vegetation and ecosystem change. Integrating functional trait-based ... -
The effect of long-term experimental warming on lichens and vascular plants in an alpine Dryas heath
Hasvik, Åshild (Master thesis, 2018)Global warming affects species diversity and ecosystems throughout the world, and alpine and arctic plant communities are considered to be particularly sensitive. During the last decades, several studies have shown a shift ... -
Three decades of environmental change studies at alpine Finse, Norway: climate trends and responses across ecological scales
Roos, Ruben Erik; Birkemoe, Tone; Asplund, Johan; Halbritter Rechsteiner, Aud Helen; Olsen, Siri Lie; Vassvik, Linn; van Zuijlen, Kristel; Klanderud, Kari (Peer reviewed; Journal article, 2022)