Petri Ekholm

Senior research scientist

D. Sc. (Limnology),
Title of Docent  (Aquatic sciences, University of Helsinki)

Contact information

Email: firstname.lastname@syke.fi
Tel. +358 295 251102
Finnish Environment Institute (Syke)
Marine and freshwater solutions
Catchments
Address: Latokartanonkaari 11,
FI-00790 Helsinki

Duties

• Nutrient losses, biogeochemical cycles and eutrophication
• Agricultural load and its reduction

Recent projects

• Shared waters: Targeting the eutrophying phosphorus from agriculture
• Requalifying matter: nutrient recycling, pollution control and the shifting economies of fertilisation (QUMARE)
• Water meets people – learn, act and influence SEVIRA
• The River Vantaa Gypsum Project
• Improving water quality of the Archipelago Sea by applying gypsum to fields (SAVE) (completed)
• Tools for evaluation and management of eutrophication - GisBloom (completed)
• Novel gypsum-based products for farm scale phosphorus trapping (TraP) (completed)
• Functionality of iron minerals in the environmental processes (FIMIN) (completed)
• Controls of supporting ecosystem services through the load of terminal electron acceptors (TEA-SERVICES) (completed)

Publications

• Publications and citations (Google Scholar)

Lectures on diffuse loading

1. Orientation (pdf 2.5 Mt)
2. Nutrients and their processes (pdf 3.6 Mt)
3. Catchment characterisation (pdf 2.3 Mt)
4. Hydrology (pdf 4.6 Mt)
5. Natural background loss (pdf 0.4 Mt)
6. Estimating nutrient fluxes (pdf 0.6 Mt)
7. Agricultural load (pdf 11 Mt)
8. Availability of nutrients (pdf 1 Mt)
9. Load from forestry (pdf 3.5 Mt)