Research output per year
Research output per year
Personal profile
Description of research and teaching
My research area is biogeochemistry, especially carbon and nutrient dynamics in forest ecosystems in relation to environmental changes and forest management. Many of my projects have been large ecosystem-level studies. The projects have dealt with nutrient dynamics and management on forested mineral soils, pools and fluxes of carbon on mineral soils and peatlands, artificial groundwater recharge on forested eskers and remediation of heavy-metal polluted sites.
My present research projects concentrate on fine root dynamics, in particular the role of roots in carbon cycling, the long-term soil changes and ecosystem recovery from chemical and physical load as well as the sustainability of forest bioenergy.
Teaching: https://blogs.helsinki.fi/forestsoil/teaching/
Education/Academic qualification
Forest sciences, Dr. (MMT), University of Eastern Finland (UEF)
Award Date: 30 Sep 1990
Fields of Science
- 4112 Forestry
- Forest soil science
- Forest ecosystem biogeochemistry
- Root ecology
International and National Collaboration
Publications and projects within past five years.
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Effects of forest management on soil fungal composition
Roth, E-M., Sietiö, O-M. (ed.), Adamczyk, B. (ed.), Tuittila, E-S. (ed.), Helmisaari, H-S. (ed.), Valkonen, S. (ed.) & Karhu, K. (ed.), 19 Jun 2022, p. 168.Research output: Conference materials › Abstract › peer-review
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Distinct patterns of below- and aboveground growth phenology and litter carbon inputs along a boreal site type gradient
Ding, Y., Leppälammi-Kujansuu, J., Salemaa, M., Schiestl-Aalto, P., Kulmala, L., Ukonmaanaho, L., Nöjd, P., Minkkinen, K., Makita, N., Zeleznik, P., Merila, P. & Helmisaari, H-S., 1 Jun 2021, In: Forest Ecology and Management. 489, 11 p., 119081.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Partitioning of forest floor CO2 emissions reveals the belowground interactions between different plant groups in a Scots pine stand in southern Finland
Ryhti, K., Kulmala, L., Pumpanen, J., Isotalo, J., Pihlatie, M., Helmisaari, H-S., Leppälammi-Kujansuu, J., Kieloaho, A-J., Bäck, J. & Heinonsalo, J., 15 Feb 2021, In: Agricultural and Forest Meteorology. 297, 12 p., 108266.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Rhizosphere 'Trade' Is an Unnecessary Analogy: Response Noe
Prescott, C., Grayston, S. J., Helmisaari, H-S., Kastovska, E., Körner, C., Lambers, H., Meier, I. C. & Ivika, O., 1 Mar 2021, In: Trends in Ecology & Evolution. 36, 3, p. 176-177 2 p.Research output: Contribution to journal › Letter › Scientific
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Sustainable forest biomass: a review of current residue harvesting guidelines
Titus, B. K., Brown, K., Helmisaari, H-S., Vanguelova, E., Stupak, I., Evans, A., Clarke, N., Guidi, C., Bruckman, V. J., Varnagiryte-Kabasinskiene, I., Armolaitis, K., de Vries, W., Hirai, K., Kaarakka, L., Hogg, K. & Reece, P., 14 Apr 2021, In: Energy, Sustainability and Society. 11, 32 p., 10.Research output: Contribution to journal › Review Article › peer-review
Open AccessFile
Projects
- 12 Finished
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Quantification and drivers for belowground carbon input in boreal forest
Ding, Y., Helmisaari, H., Kulmala, L. & Schiestl-Aalto, P.
01/01/2021 → 31/12/2021
Project: Research project
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Advancing the dialogue on pathways towards development of sustainable forest landscapes for production of wood for energy and the bioeconomy-collaboration, data, research, monitoring and governance
Stupak, I., Smith, C. T., Clarke, N., Lazdina , D., Morris, D. M., Helmisaari, H., Varnagiryte-Kabasinskiene, I., Nichiforel, L., Varik , M. & Dwivedi, P.
13/01/2020 → 31/12/2021
Project: Other project
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Comparing the impact of continuous cover forest management and rotation forest management on long-term soil carbon storage
Roth, E., Karhu, K. & Helmisaari, H.
01/01/2020 → 31/12/2022
Project: Research project
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Juuristojen hiilivirrat - puuttuvat palat boreaalisten soiden hiilitaseissa
Minkkinen, K., Leppälammi-Kujansuu, J., Helmisaari, H., Ojanen, P. & Straková , P.
01/09/2015 → 31/08/2019
Project: Research project
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Longevity of soil changes and long-term ecosystem recovery from chemical and physical load (Maaperämuutosten kesto ja ekosysteemin pitkän ajan toipuminen kemiallisesta ja fysikaalisesta kuormituksesta, funding Nessling Foundation)
Helmisaari, H., Kaarakka, L. & Palviainen, M.
01/03/2013 → 30/04/2016
Project: Research project
Activities
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Formas, Sweden (External organisation)
Heljä-Sisko Helmisaari (Board member)
Oct 2022Activity: Membership types › Membership or other role in review committee
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Invited presentation
Heljä-Sisko Helmisaari (Speaker)
15 Feb 2022Activity: Talk or presentation types › Invited talk
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Sustainable forest management for bioenergy and the bioeconomy in the Nordic countries – research to underpin forest-related policies
Heljä-Sisko Helmisaari (Invited speaker), Nicholas Clarke (Speaker), Lars Högbom (Speaker) & Inge Stupak (Speaker)
27 Oct 2021Activity: Talk or presentation types › Invited talk
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Trees, forests and people (Journal)
Heljä-Sisko Helmisaari (Reviewer)
27 Apr 2021Activity: Publication peer-review and editorial work types › Peer review of manuscripts
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Forest Ecology and Management (Journal)
Heljä-Sisko Helmisaari (Reviewer)
28 Apr 2021Activity: Publication peer-review and editorial work types › Peer review of manuscripts
Press/Media
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Metsien hiilitaseiden laskenta tarkemmaksi – metsäkasvillisuuden juurten uusiutuminen kasvattaa maaperän hiilivarastoja
Heljä-Sisko Helmisaari & Yiyang Ding
12/11/2021
1 Media contribution
Press/Media: Press / Media
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Haastattelu lehteen Suomen Luonto
Heljä-Sisko Helmisaari & Yiyang Ding
14/04/2021
1 Media contribution
Press/Media: Press / Media
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