Blar i Brage NMBU på forfatter "Gauslaa, Yngvar"
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Erioderma pedicellatum : an ecophysiological study of a globally threatened pioneer lichen on thin spruce branches in old forests
Nilsson, Alexander Ruhs (Master thesis, 2021)Lichen extinction occurs at a fast rate due to human activity, and species yet to be discovered are likely go extinct every year. Many species close to extinction may still be rescued by conservation management based on ... -
Gastropod grazing may prevent reintroduction of declining N-fixing epiphytic lichens in broadleaved deciduous forests
Gauslaa, Yngvar; Johlander, Stina; Nordén, Björn (Journal article; Peer reviewed, 2018)We studied the potential to use reintroduction of two declining N-fixing flagship lichens to identify factors affecting failure or success in SW Swedish sites that had experienced substantially reduced acidification. After ... -
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 ... -
Rehydration and photosynthetic reactivation of old forest cephalolichen members of Lobaria in humid air
Hovind, Annie Beret Ås (Master thesis, 2018)Most lichens tolerate desiccation, yet sufficient hydration remains a general prerequisite to photosynthesis and growth. Species-specific morphologies likely reflect important hydration traits and may therefore provide ... -
Simulated global warming increases usnic acid but reduces perlatolic acid in the mat-forming terricolous lichen Cladonia stellaris
Asplund, Johan; Siegenthaler, Andy; Gauslaa, Yngvar (Peer reviewed; Journal article, 2017)Lichens as sessile and slow-growing symbiotic associations have evolved various carbon-based secondary compounds (CBSCs) to mitigate the effects of some stressors in the extreme environments in which they often grow. The ... -
Ultraviolet radiation affects growth and photosynthesis in the old forest lichens Lobaria pulmonaria and L. virens
Kann, Ida Karina (Master thesis, 2016-08-31)Depletion of the ozone layer and human activities such as logging may increase ultraviolet (UV) radiation-exposure of forest lichen habitats. Previous studies show that some forest lichens are highly susceptible to high ...