Ella Thoen

• Tonjer, Lea-Rebekka; Thoen, Ella; Morgado N, Luis; Botnen, Synnøve; Mundra, Sunil & Nybakken, Line [Show all 8 contributors for this article] (2021). Fungal community dynamics across a forest–alpine ecotone. Molecular Ecology. ISSN 0962-1083. 30(19), p. 4926–4938. doi: 10.1111/mec.16095. Full text in Research Archive
• Thoen, Ella; Harder, Christoffer Bugge; Kauserud, Håvard; Botnen, Synnøve Smebye; Vik, Unni & Taylor, Andy F.S. [Show all 8 contributors for this article] (2020). In vitro evidence of root colonization suggests ecological versatility in the genus Mycena. New Phytologist. ISSN 0028-646X. 227, p. 601–612. doi: 10.1111/nph.16545. Full text in Research Archive
• Botnen, Synnøve Smebye; Thoen, Ella; Eidesen, Pernille Bronken; Krabberød, Anders Kristian & Kauserud, Håvard (2020). Community composition of arctic root-associated fungi mirrors host plant phylogeny. FEMS Microbiology Ecology. ISSN 0168-6496. 96. doi: 10.1093/femsec/fiaa185. Full text in Research Archive
• Thoen, Ella; Aas, Anders Bjørnsgard; Vik, Unni; Brysting, Anne Krag; Skrede, Inger & Carlsen, Tor [Show all 7 contributors for this article] (2019). A single ectomycorrhizal plant root system includes a diverse and spatially structured fungal community. Mycorrhiza. ISSN 0940-6360. 29(3), p. 167–180. doi: 10.1007/s00572-019-00889-z. Full text in Research Archive
• Botnen, Synnøve Smebye; Davey, Marie Louise; Aas, Anders Bjørnsgard; Carlsen, Tor; Thoen, Ella & Heegaard, Einar [Show all 12 contributors for this article] (2019). Biogeography of plant root-associated fungal communities in the North Atlantic region mirrors climatic variability. Journal of Biogeography. ISSN 0305-0270. 46(7), p. 1532–1546. doi: 10.1111/jbi.13613. Show summary

  Aim Polar and alpine ecosystems appear to be particularly sensitive to increasing temperatures and the altered precipitation patterns linked to climate change. However, little is currently known about how these environmental drivers may affect edaphic organisms within these ecosystems. In this study, we examined communities of plant root‐associated fungi (RAF) over large biogeographical scales and along climatic gradients in the North Atlantic region in order to gain insights into the potential effects of climate variability on these communities. We also investigated whether selected fungal traits were associated with particular climates. Locations Austria, Scotland, Mainland Norway, Iceland, Jan Mayen and Svalbard. Taxa Root fungi associated with the ectomycorrhizal and herbaceous plant Bistorta vivipara. Methods DNA metabarcoding of the ITS1 region was used to characterize the RAF of 302 whole plant root systems, which were analysed by means of ordination methods and linear modelling. Fungal spore length, width, volume and shape, as well as mycelial exploration type (ET) of ectomycorrhizal (ECM) basidiomycetes were summarized at a community level. Results The RAF communities exhibited strong biogeographical structuring, and both compositional variation as well as fungal species richness correlated with annual temperature and precipitation. In accordance with general island biogeography theory, the least species‐rich RAF communities were found on Jan Mayen, a remote and small island in the North Atlantic Ocean. Fungal spores tended to be more elongated with increasing latitude. We also observed a climate effect on which mycelial ET was dominating among the ectomycorrhizal fungi. Main conclusions Both geographical and environmental variables were important for shaping root‐associated fungal communities at a North Atlantic scale, including the High Arctic. Fungal OTU richness followed general biogeographical patterns and decreased with decreasing size and/or increasing isolation of the host plant population. The probability of possessing more elongated spores increases with latitude, which may be explained by a selection for greater dispersal capacity among more isolated host plant populations in the Arctic.

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• Ronold, Eivind Kverme; Kauserud, Håvard; Thoen, Ella & Vik, Unni (2022). Unsuccessful mycorrhization of seedlings slow the advance of the tree- and forest line in alpine ecosystems.
• Vik, Unni; Pérez-Izquierdo, Leticia; Thoen, Ella & Clemmensen, Karina E. (2018). Fungal communities in a changing climate.
• Tonjer, Lea-Rebekka; Thoen, Ella; Morgado, Luis Neves; Mundra, Sunil; Nybakken, Line & Bryn, Anders [Show all 7 contributors for this article] (2018). Changes in the soil fungal community across the mountain birch tree line ecotone.
• Tonjer, Lea-Rebekka; Thoen, Ella & Bryn, Anders (2018). Uten soppen når ikke skogen toppen. Aftenposten (morgenutg. : trykt utg.). ISSN 0804-3116. p. 12–13.
• Brandrud, Tor Erik; Bendiksen, Egil; Bredin, Yennie Katarina; Dima, Bálint; Eng, Sondre & Kauserud, Håvard [Show all 7 contributors for this article] (2022). Nasjonal overvåking av kalklindeskog og kalklindeskogsopper. Aktiviteter i 2021, samt sammenstilling av basisdata fra 1. og 2. overvåkingsomløp 2013-2021. Norsk institutt for naturforskning (NINA). ISSN 978-82-426-4958-4. Show summary

  - Overvåking - kalklindeskogsopper - truete arter - fruktlegeme-registrering - miljø-DNA fra jord - Oslofjordsområdet

• Thoen, Ella (2019). Functional versatility and diversity in the plan root mycobiome. Faculty of Mathematics and Natural Sciences, UiO. ISSN 1501-7710.
• Hansen, Simen Hyll; Kauserud, Håvard; Davey, Marie Louise; Thoen, Ella; Vik, Unni & Brysting, Anne Krag (2018). Climate and host identity structure fungal endophyte communities. Universitetet i Oslo.

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