Blar i Brage NMBU på forfatter "Asplund, Johan"
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Challenging conventional carbon wisdom : a climate driven vegetation shift from spruce to beech may not change the size of the carbon pool in southeast Norwegian forest soils
Ransedokken, Yngvild (Master thesis, 2016-08-31)Forest soils represents the largest terrestrial carbon (C) pool and thus play a critical role in the global C cycle. Predicted climate change is expected to change the size of forest soil C pools by driving a shift in ... -
Condensed tannins in senesced foliage and soil organic layer in response to fertilization in boreal forest ecosystem
Ferdous, Zannatul (Master thesis, 2021)Anthropogenic nitrogen deposition rate in boreal forests increased over the last century and significantly impacted many parts of these ecosystems. Boreal forests contain a large amount of carbon (C), and nitrogen (N) is ... -
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 ... -
Decomposition of Beech and Spruce Litter in Neighbouring Beech and Spruce Forests
Verne, Ingrid Kleppenes (Master thesis, 2017)Climate change is expected to cause a transformation from spruce to beech dominated forests in a large part of southeast Norway. A shift in dominating tree species may have a large effect on the factors controlling 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 ... -
Divergent responses of β-diversity among organism groups to a strong environmental gradient
Jonsson, M; Snäll, Tord; Asplund, Johan; Clemmensen, Karina E; Dahlberg, Anders; Kumordzi, Bright B; Lindahl, Björn D.; Oksanen, Jari; Wardle, David A (Journal article; Peer reviewed, 2016) -
Effect of nitrogen fertilization on decomposition in boreal forest
Subedi, Puspa (Master thesis, 2021)Anthropogenic activities have resulted in escalating deposition of nitrogen in many forms that impact several aspects of ecosystem especially lying on boreal region where N is a limiting factor for tree growth. Although N ... -
Effects of boreal forest fertilization on carbon storage and ectomycorrhizal fungi
Hauken, Karsten Nordal (Master thesis, 2020)Boreal forests represent a large fraction of the global carbon (C) stock. Increasing attention is given to utilizing these forests in the battle against climate changed driven by increased atmospheric CO2. Part of this ... -
Effects of elevation on the lichen community palatability in an alpine ecosystem
Levavasseur, Gaspard Paul Yves Marie (Master thesis, 2021)Lichens are present in almost all terrestrial ecosystems, and in some of them, they are the main primary producers. Most studies focus on vascular plant communities, even studies on ecosystems where lichens represent an ... -
Effects of long-term experimental warming on alpine bryophytes : trends in functional traits
Dahle, Oda Sofie (Master thesis, 2019)Functional traits are becoming increasingly important tools to evaluate plant community response to climate change. Artificial warming treatments can shift community-level trait values as a consequence of intraspecific ... -
Effekt av skoggjødsling på det kjemiske forsvaret hos gran (Picea abies)
Selmer, Ruben Nikolai (Master thesis, 2018)For at Norge skal nå målene i klimameldingen har staten gitt tilskudd til skoggjødsling som et av flere virkemidler. Innen skogbruket har gjødsling blitt godt mottatt og blitt en av de mest lønnsomme investeringene etter ... -
Fertilization of Norway spruce forest with wood ash and nitrogen affected both tree growth and composition of chemical defence
Hanssen, Kjersti Holt; Asplund, Johan; Clarke, Nicholas; Selmer, Ruben; Nybakken, Line (Peer reviewed; Journal article, 2020)We fertilized a Norway spruce (Picea abies (L.) Karst.) stand on rich mineral soil with 3 t ha−1 of wood ash (ASH), 150 kg ha−1 of nitrogen (N) or a combination of wood ash and nitrogen (ASH + N), in addition to unfertilized ... -
Foliar phenols in beech (Fagus sylvatica L.) seedlings of six European provenances from a latitudinal gradient grown in three common gardens in Norway
Steen, Johanna Sætherø (Master thesis, 2020)With progressive climate change, the total concentration and composition of the chemical defense in European beech (Fagus sylvatica L.) is likely to change, which might impact its fitness and ability to establish beyond ... -
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 ... -
Functional traits and decomposition of lichens, bryophytes and vascular plants in an alpine ecosystem
van Zuijlen, Kristel (PhD Thesis;2019:44, Doctoral thesis, 2019)Functional traits influence how an organism responds to its environment and how this can affect ecosystem processes such as decomposition. The majority of trait-based studies have focused on vascular plants, while non-vascular ... -
How lichens impact on terrestrial community and ecosystem properties
Asplund, Johan; Wardle, David A (Journal article; Peer reviewed, 2016) -
Hvordan ettervirkningene av en 26 år gammel fin-skala forstyrrelse og lystilgang i skogbunnen påvirker etablering og vekst hos gran, furu, rogn, bjørk og hårfrytle i en granskog i SØ-Norge
Lima, Oline Rosnes (Master thesis, 2021)Forstyrrelser og suksesjoner er en del av den naturlige dynamikken i boreal skog, og skaper store og små, romlige og tidsmessige endringer. Endringene fører til heterogenitet i økosystemene og kan øke artsdiversiteten. ... -
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 ... -
Lichen-gastropod interactions : Chemical defence and ecological consequences of lichenivory
Asplund, Johan (PhD Thesis;2010:2, Doctoral thesis, 2010)Herbivory are considered a significant factor regulating plant communities. Some mammals, e.g. reindeers, substantially influence lichen-dominated communities. The impact on lichens posed by invertebrate grazers is less ... -
Long-term experimental warming in an alpine heath : decrease in cover of the most abundant bryophytes
Sundsbø, Snorre (Master thesis, 2019)Alpine ecosystems have shown to be sensitive to climate warming. Bryophytes are particularly important in alpine ecosystems and are known to support ecosystem services such as water regulation, nitrogen fixation and carbon ...