Projects per year
Organisation profile
Organisation Profile
We investigate the winter ecology and overwintering strategies of plants. Much of the work is focused on the seasonality of plants in a warming winter climate, with special emphasis on the role of snow in northern ecosystems. We have applied a range of methods, such as overwintering experiments under diverse climatic conditions in the field (reciprocal overwintering experiments), snow manipulations, growth chamber experiments, and ecophysiological modelling.
Our recent topics include:
- photosynthetic activity of plants outside growing season and under snow
- effects of microclimate on arctic-alpine plants
- effects of winter climate on annual plants
- invasive species in a warming winter climate
- winter dormancy and phenology of plants in a warming climate
- interactions between canopy, snow and vegetation
Group leader: Dr. Helena Åström
Fields of Science
- 1181 Ecology, evolutionary biology
- plant ecology, winter ecology
- 1183 Plant biology, microbiology, virology
International and National Collaboration
Publications and projects within past five years.
Profiles
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Helena Åström
- Teachers' Academy
- The Academic Outreach Network
- Viikki Plant Science Centre (ViPS)
- Plant Ecophysiology and Climate Change Group
- Doctoral Programme in Plant Sciences - Supervisor for doctoral programme
- Organismal and Evolutionary Biology Research Programme - University Lecturer
Person: U3 Research and teaching staff, UH
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Timo Saarinen
- The Academic Outreach Network
- Plant Ecophysiology and Climate Change Group
- Doctoral Programme in Plant Sciences - Supervisor for doctoral programme
- Organismal and Evolutionary Biology Research Programme - University Lecturer
Person: U3 Research and teaching staff, UH
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Kasvien talvi - talvitietoa kaikille
Åström, H. (Project manager) & Saarinen, T. (Participant)
01/01/2017 → …
Project: Other project
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Invasive plant species in a warming winter climate
Åström, H. (Project manager) & Saarinen, T. (Project manager)
Waldemar von Frenckells stiftelse
01/06/2015 → …
Project: Research project
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ViPS: Viikki Plant Science Centre
Elomaa, P. (Project manager), Aphalo, P. (Principal Investigator), Asiegbu, F. (Principal Investigator), Bäck, J. (Principal Investigator), Berninger, F. (Principal Investigator), Brosche, M. (Principal Investigator), Fagerstedt, K. (Principal Investigator), Hänninen, H. (Principal Investigator), Heinonsalo, J. (Principal Investigator), Helariutta, Y. (Principal Investigator), Himanen, K. (Principal Investigator), Hölttä, T. (Principal Investigator), Hytönen, T. (Principal Investigator), Hyvönen, J. (Principal Investigator), Kangasjärvi, J. (Principal Investigator), Kärkönen, A. (Principal Investigator), Korpelainen, H. (Principal Investigator), Laine, A.-L. (Principal Investigator), Mähönen, A. P. (Principal Investigator), Mäkelä, A. (Principal Investigator), Mäkinen, K. (Principal Investigator), Ojala, A. (Principal Investigator), Overmyer, K. (Principal Investigator), Palonen, P. (Principal Investigator), Palva, E. T. (Principal Investigator), Pihlatie, M. (Principal Investigator), Pirhonen, M. (Principal Investigator), Porcar-Castell, A. (Principal Investigator), Pumpanen, J. (Principal Investigator), Rikkinen, J. (Principal Investigator), Robson, T. M. (Principal Investigator), Salojärvi, J. (Principal Investigator), Schulman, A. (Principal Investigator), Stoddard, F. (Principal Investigator), Teeri, T. (Principal Investigator), Valkonen, J. (Principal Investigator), Vesala, T. (Principal Investigator), Wrzaczek, M. (Principal Investigator) & Sims-Huopaniemi, K. (Other)
01/01/2015 → …
Project: Other project
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Education: web material (in swedish), plant biology
Åström, H. (Participant)
01/01/2008 → …
Project: Research project
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Education: web material (in swedish), plant biology
Åström, H. (Participant)
01/01/2007 → …
Project: Research project
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Latitudinal origins of Fragaria vesca show adaptive variation in phenological, morphological and ecophysiological leaf traits associated with winter climate
Still, S., Hytönen, T., Saarinen, T. & Åström, H., Aug 2023, In: Flora : morphology, distribution, functional ecology of plants. 305, 11 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Onset of growth of bulbils in the field garlic (Allium oleraceum L.)
Sjöblom, R., Åström, H., Saarinen, T. & Hæggström, C.-A., 31 Dec 2023, In: Memoranda Societatis pro Fauna et Flora Fennica. 99, p. 18-27 10 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Onset of autumn senescence in High Arctic plants shows similar patterns in natural and experimental snow depth gradients
Gehrmann, F., Ziegler, C. & Cooper, E. J., Aug 2022, In: Arctic Science. 8, 3, p. 744-766 23 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Beyond rest and quiescence (endodormancy and ecodormancy): A novel model for quantifying plant-environment interaction in bud dormancy release
Lundell, R., Hänninen, H., Saarinen, T., Åström, H. & Zhang, R., Jan 2020, In: Plant, Cell and Environment. 43, 1, p. 40-54 15 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Sub-Arctic alpine Vaccinium vitis-idaea exhibits resistance to strong variation in snowmelt timing and frost exposure, suggesting high resilience under climatic change
Gehrmann, F., Lehtimäki, I.-M., Hänninen, H. & Saarinen, T., Oct 2020, In: Polar Biology. 43, 10, p. 1453–1467 15 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile
Activities
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Maisteritutkielman ohjaus
Åström, H. (Participant) & Saarinen, T. (Participant)
2019 → 2020Activity: Other activity types › Types for other activities - Other
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The Matriculation Examination Board (External organisation)
Saarinen, T. (Board member)
1 Jan 2019 → 31 Dec 2024Activity: Membership types › Membership or other role in public Finnish or international organization
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Interview, RTE (the national broadcaster) in Ireland
Åström, H. (Participant)
18 Feb 2019Activity: Other activity types › Types for other activities - Other
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The Matriculation Examination Board, Finland (External organisation)
Saarinen, T. (Board member)
1 Jan 2018 → 31 Dec 2018Activity: Membership types › Membership or other role in public Finnish or international organization
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Maisteritutkielman ohjaus
Åström, H. (Supervisor) & Aksela, M. K. (Supervisor)
2018 → 2019Activity: Examination types › Supervision of other thesis (Master's, Licentiate)