Research output per year
Research output per year
Personal profile
Description of research and teaching
I am an adjunct professor in palaeoecology and I am interested in a broad range of research questions related to environmental change (see my list of publications). I am mainly using diatoms as indicators of past and present environmental change with the main focus on Subarctic/Arctic environments, especially lakes. I have earned my master's degree in physical geography and defended my doctoral thesis in hydrobiology. I have worked in over 20 international and national projects. Currently I am a University Researcher at the University of Helsinki and I am leading two large projects funded by The Finnish Cultural foundation (VesiMon; https://skr.fi/en/cultural-activities/vesimon-project-improve-lake-status-assessment-and-monitoring) and the Research Council of Finland (Browning lakes in the greening Arctic). In addition, I am responsible for forensic diatom analysis coordinated by the National Institute of Health and Welfare (THL).
Fields of Science
- 1172 Environmental sciences
- Palaeoecology
- Environmental Change
- Diatoms
- lakes
International and National Collaboration
Publications and projects within past five years.
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Holocene hydroclimate and landscape changes as drivers of organic carbon cycling in a small northern Fennoscandian lake
Orozco, L. E., Weckström, J., Plociennik, M., Åberg, A. K., Sakari Salonen, J., Gröcke, D. R., Arppe, L. & Heikkilä, M., 1 Jun 2025, In: Quaternary Science Reviews. 357, 14 p., 109323.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
The thermal structure of small and shallow Arctic Fennoscandian lakes
Zhang, M., Leppäranta, M., Heikkilä, M., Weckstrom, K., Korhola, A., Kirchner, N., Granebeck, A., Schenk, F. & Weckström, J., 2025, In: Arctic, Antarctic, and Alpine Research. 57, 1, 18 p., 2433829.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Detecting mining impacts on freshwater ecosystems using replicated sampling before and after the impact
Mykrä, H., Aroviita, J., Tolonen, K., Turunen, J., Weckström, K., Weckström, J. & Hellsten, S., Jul 2024, In: Environmental Monitoring and Assessment. 196, 7, 18 p., 635.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Drivers of spatio-temporal variations in summer surface water temperatures of Arctic Fennoscandian lakes (2000–21)
Zhang, M., Leppäranta, M., Korhola, A., Kirchner, N., Granebeck, A., Schenk, F., Weckström, K., Heikkilä, M. & Weckström, J., 2024, In: Polar Research. 43, 15 p., 9580.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Reconstructing warm-season temperatures using brGDGTs and assessing biases in Holocene temperature records in northern Fennoscandia
Otiniano, G. A., Porter, T. J., Phillips, M. A., Juutinen, S., Weckström, J. & Heikkilä, M., 2024, In: Quaternary Science Reviews. 329, 11 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile
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Opening Pandora’s Box: Assessing The Risks of Permafrost Thaw to Environment and Human Health
Väliranta, M. (Project manager), Korhola, A. (Project manager), Weckström, J. (Principal Investigator), Kontro, M. H. (Principal Investigator), Bianchi, F. (Principal Investigator), Passananti, M. (Co-Principal Investigator), Vapalahti, O. (Principal Investigator), Sironen, T. (Principal Investigator), Korhonen, E. M. (Co-Principal Investigator), Green, S. (Principal Investigator), Toivanen, R. (Principal Investigator), Kiss, E. A. (Co-Principal Investigator), Smura, T. (Co-Principal Investigator) & Pilkama, H. E. (Participant)
01/01/2025 → 31/12/2027
Project: Research project
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Browning lakes in the greening Arctic
Weckström, J. (Project manager), Heikkilä, M. (Participant), Heikkilä, M. (Participant), Keva, O. (Participant), Koski, K. J. A. (Participant), Käkelä, R. (Participant), McGowan, S. (Participant), Meyer-Jacob, C. (Participant), Orozco, L. (Participant), Smol, J. (Participant), Strötz, L. M. (Participant), Virtanen, T. (Participant), Weckström, K. (Participant) & Weckström, K. (Participant)
01/09/2023 → 31/08/2027
Project: Research Council of Finland: Academy Project
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Arctic lake biodiversity, productivity and ecosystem resource capacity over the Holocene
Heikkilä, M. (Principal Investigator), Eronen, J. T. (Participant), Luostarinen, T. (Participant), Manninen, M. A. (Participant), McGowan, S. (Participant), Orozco, L. (Participant), Ribeiro, S. (Participant), Saarni, S. (Participant), Salonen, J. S. (Participant), Tallavaara, M. (Participant), Valtonen, T. A. I. (Participant), Weckström, J. (Participant) & Zimmermann, H. (Participant)
01/03/2023 → 30/06/2025
Project: Foundations (Private Foundations, Non-Profit Foundations, Charitable Trusts)
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Vesiekosysteemien seuranta- ja velvoitetarkkailumenetelmien kehittäminen – menetelmät ja tila-arviot ekosysteemin toiminnan kuvaajina
Weckström, J. (Project manager), Malinen, T. (Project manager), Tolonen, K. (Participant), Mykrä, H. (Participant) & Hellsten, S. (Project manager)
01/01/2022 → 31/12/2026
Project: Research project
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Harmful cyanobacterial blooms in (sub-) Arctic lakes
Kivilompolo, S.-K. (Project manager), Weckström, J. (Principal Investigator) & Rosqvist, G. (Principal Investigator)
01/11/2020 → 31/10/2021
Project: Research project
Prizes
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Department of Environmental Sciences Incentive Bonus 2017 - rewarded for exceptional performance
Weckström, J. (Recipient), Dec 2017
Prize: Prizes and awards
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Activities
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Climate Dynamics (Journal)
Weckström, J. (Reviewer)
2025 → …Activity: Publication peer-review and editorial work types › Peer review of manuscripts
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Remote Sensing of Environment (Journal)
Weckström, J. (Reviewer)
2025 → …Activity: Publication peer-review and editorial work types › Peer review of manuscripts
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Journal of Hydrology (Journal)
Weckström, J. (Reviewer)
2025 → …Activity: Publication peer-review and editorial work types › Peer review of manuscripts
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Journal of Applied Meteorology and Climatology (Journal)
Weckström, J. (Reviewer)
2024 → …Activity: Publication peer-review and editorial work types › Peer review of manuscripts
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Science book of the year 2024
Weckström, J. (Consultant)
1 May 2024 → 19 Mar 2025Activity: Consultancy types › Consultancy
Press/Media
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Tammenlastuja: Menneisyys opettaa
Heikkilä, M., Manninen, M. A., Valtonen, T. A. I., Weckström, J., Oinonen, M., Tallavaara, M., Eronen, J. T., Kahilainen, K., Piro, A., Malinen, T., Hellsten, S., Mykrä, H., Tolonen, K., Harkonen, L. S., Pokka, P. H., Auvinen, P., Väliranta, M., Arppe, L., Ekholm, P., Salonen, J. S., Zimmermann, H., Ribeiro, S., Saarni, S., Vinni, M. & Atti, S. M.
10/10/2023
1 item of Media coverage
Press/Media: Press / Media
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The impact of Talvivarra/Terrafame on freshwater ecosystems
30/09/2018
1 Media contribution
Press/Media: Press / Media
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