Food web structure in the Sotkamo lakes 2023-2024 (Sotkamon järvet)
Main funder
Funds granted by main funder (€)
- 53 750,00
Funding program
Project timetable
Project start date: 01/08/2023
Project end date: 31/12/2024
Summary
The food web studies of Sotkamo's lakes are part of a wider project financed by the Finnish Cultural Fund, which aims to develop lake monitoring methods. The study includes about ten lakes subject to different loading pressures (municipal wastewater, mining industry, forest industry, peat production). In Sotkamo, the research lakes are Jormasjärvi and Nuasjärvi, loaded by the Terrafame mine, and Kiantajärvi as a reference lake.
In the food web research section, the structure of the food web of research lakes is explained and the possibilities of food web research in the development of observation methods are evaluated. In particular, the section focuses on 1) the assessment of the fishery structure of the pelagic area, 2) the possibilities of carbon and nitrogen isotopes to characterize the food web and identify the effects of loading pressures, and 3) the accumulation and enrichment of mercury and the development of mercury monitoring.
The evaluation of pelagic fish community is a problematic point in the current fish monitoring, because the fish, that typically occur in the pelagic area are very poorly caught in the Nordic nets used for monitoring (Olin & Malinen 2003, Olin et al. 2009). The research group has access to extensive monitoring data from lakes where net test fishing, echo sounding and test trawling have been carried out at the same time.
In the food web research section, the structure of the food web of research lakes is explained and the possibilities of food web research in the development of observation methods are evaluated. In particular, the section focuses on 1) the assessment of the fishery structure of the pelagic area, 2) the possibilities of carbon and nitrogen isotopes to characterize the food web and identify the effects of loading pressures, and 3) the accumulation and enrichment of mercury and the development of mercury monitoring.
The evaluation of pelagic fish community is a problematic point in the current fish monitoring, because the fish, that typically occur in the pelagic area are very poorly caught in the Nordic nets used for monitoring (Olin & Malinen 2003, Olin et al. 2009). The research group has access to extensive monitoring data from lakes where net test fishing, echo sounding and test trawling have been carried out at the same time.
Principal Investigator
Other persons related to this project (JYU)
Contact person (yes/no): Yes | |
Contact person (yes/no): Yes |
