Projects per year
Organisation profile
Organisation Profile
Our research focuses on the functioning of lake ecosystems, especially on food web interactions and nutrient cycling and their implications on lake restoration and management. Additionally, coastal environments are included in the studies. In the food web studies, many projects have been targeted on the effects of disturbances on predator-prey interactions and on the effects of top-down regulation. The studied disturbances have included for instance increasing water turbidity, water colour and turbulence. Studies on nutrient cycling have mostly been targeted on factors regulating the internal nutrient loading of lakes, including for instance sediment resuspension, bioturbation and oxygen conditions. Both pelagic and littoral zones have been included in the food web interaction studies as well as in nutrient cycling studies. The studies include field sampling, as well as experimental work in the field and in the laboratory. Many of the studies are connected to lake management and restoration projects and are planned to improve our knowledge on the effects and applicability of different restoration methods. The studied restoration methods include food web management (biomanipulation), artificial aeration and hypolimnetic withdrawal. The research results have affected the restoration activities of several lakes. Read more on our website
Fields of Science
- 1172 Environmental sciences
- 1181 Ecology, evolutionary biology
International and National Collaboration
Profiles
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Jukka Horppila
- Ecosystems and Environment Research Programme - Professor
- Helsinki Institute of Sustainability Science (HELSUS)
- Lake Ecosystem Dynamics
- Doctoral Programme in Interdisciplinary Environmental Sciences - Supervisor for doctoral programme
Person: UH , U4 Research and teaching staff
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Leena Nurminen
- Ecosystems and Environment Research Programme - University Lecturer
- Helsinki Institute of Sustainability Science (HELSUS)
- Lake Ecosystem Dynamics
- Doctoral Programme in Geosciences - Supervisor for doctoral programme
- Doctoral Programme in Interdisciplinary Environmental Sciences - Supervisor for doctoral programme
Person: U3 Research and teaching staff, UH
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Soila Silvonen, Postdoctoral Researcher
- Ecosystems and Environment Research Programme - Visiting scholar
- Lake Ecosystem Dynamics
Person: Visiting scholar, Doctoral Researcher
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Olga Tammeorg
- Department of Agricultural Sciences - University Researcher, Visiting scholar
- Lake Ecosystem Dynamics
Person: Visiting scholar, U3 Research and teaching staff, UH
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Changes in aquatic macrophyte communities in the last hundred years and the underlying environmental factors across regions
Alahuhta, J., Heino, J., Hjort, J., Akasaka, M., Väliranta, M. & Nurminen, L.
01/01/2017 → …
Project: Research project
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The development of internal loading phosphorus loading in an aerated lake
Horppila, J., Niemistö, J. & Silvonen, S.
01/02/2016 → 31/12/2107
Project: Research project
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VESIKUJA: Vesistöjen sisäinen kuormitus hyötykäyttöön - uuden sovelluksen jalkauttaminen
Nurminen, L., Niemistö, J., Jilbert, T., Silvonen, S. & Horppila, J.
01/01/2020 → 31/12/2020
Project: Research project
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Alusveden puhdistus ympärivuotiseksi - sisäisen fosforikuormituksen hyödyntäminen talvella
01/12/2018 → 31/05/2020
Project: Research project
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Järvien kunnostus ja ravinteiden kierrätys sisäistä kuormitusta hyödyntämällä - alusveden puhdistuksen uusi sovellus
Horppila, J., Jilbert, T., Nurminen, L. & Niemistö, J.
23/10/2017 → 31/12/2019
Project: Research project
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Linking sediment geochemistry with catchment processes, internal phosphorus loading and lake water quality
Tammeorg, O., Nürnberg, GK., Horppila, J., Tammeorg, P., Jilbert, T. & Noges, P., 1 Oct 2024, In: Water Research. 263, 12 p., 122157.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Making waves: The sensitivity of lakes to brownification and issues of concern in ecological status assessment
Horppila, J., Nurminen, L., Rajala, S. & Estlander, S., 1 Feb 2024, In: Water Research. 249, 4 p., 120964.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Rotifer functionality as a potentially useful indicator of lake browning
Estlander, S., Nurminen, L., Rajala, S., Olin, M. & Horppila, J., Sept 2024, In: Limnologica. 108, 8 p., 126194.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Spatial and temporal variation of Nuphar lutea pigment content in small boreal lakes: effect of water colour and phosphorus concentration
Rajala, S., Estlander, S., Nurminen, L. & Horppila, J., 2024, In: Hydrobiologia.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Spatio-temporal variations in sediment phosphorus dynamics in a large shallow lake: Mechanisms and impacts of redox-related internal phosphorus loading
Tammeorg, O., Nürnberg, G. K., Tõnno, I., Toom, L. & Nõges, P., 10 Jan 2024, In: Science of the Total Environment. 907, 13 p., 168044.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile
Activities
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Invited talk on the challenges of lake restoration
Jukka Horppila (Speaker)
14 Feb 2024Activity: Talk or presentation types › Invited talk
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Participating in the session of the Supreme Administrative Court
Jukka Horppila (Participant)
4 Apr 2024Activity: Other activity types › Other
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Invited talk on lake brownification
Jukka Horppila (Speaker)
15 Feb 2024Activity: Talk or presentation types › Invited talk
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Lahti Lakes 2024
Jukka Horppila (Attendee)
3 Jun 2024 → 5 Jun 2024Activity: Participating in or organising an event types › Organisation and participation in conferences, workshops, courses, seminars
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Pre-examination of a Ph.D. thesis for the university of Jyväskylä
Jukka Horppila (Participant)
4 Apr 2024 → 10 Apr 2024Activity: Other activity types › Other
Prizes
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Frontiers Planet Prize 2023 National Champion of Finland
Tammeorg, Olga (Recipient), Tammeorg, Priit (Recipient), Kiani, Mina (Recipient), Horppila, Jukka (Recipient), Jilbert, Tom (Recipient), Hellsten, Seppo (Recipient), Härkönen, Laura (Recipient), Nurminen, Leena (Recipient), Ruuhijärvi, Jukka (Recipient), Kotamäki, Niina (Recipient), Silvonen, Soila (Recipient) & Ventelä, Anne-Mari (Recipient), 22 Apr 2024
Prize: Prizes and awards
Press/Media
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Dredged lake sediment could nourish new crops
Priit Tammeorg, Mina Kiani, Olga Tammeorg, Jure Zrim & Asko Simojoki
17/04/2023 → 02/05/2023
4 Media contributions
Press/Media: Press / Media
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Haastattelu hoitokalastuksen soveltuvuudesta Hiidenveden kunnostukseen
01/02/2013
1 Media contribution
Press/Media: Press / Media