Ongoing projects:
Baltic Interreg project Trust Alum
This project involves transfer of knowledge about the lake restoration process and design of measures. Although the focus of Trust Alum is to demonstrate the use of sediment treatment using aluminum minerals to bind and inactivate phosphorus, the project follows the entire process needed to restore lakes in a sustainable and cost-effective manner. These steps include:
- Design of treatment plan
- Sampling and analysis from all potential nutrient sources
- Dynamic (mechanistic) lake modeling
- Measures scenario analysis
- Design and implementation of measures
- Communication with the public and stakeholders
Dynamic modeling of bays on the Baltic Sea to determine effectiveness of restoration measures
Coastal bays are more complex than inland waters because they are connected to the Baltic Sea, which can be either a source or sink of nutrients depending on the flow of water to or from the coastal bay. This makes determining which measures will help with reducing eutrophication more difficult. In this project, we use a modified, two-dimensional model to more accurately determine nutrient sources and determine which methods will be most cost-effective for restoring coastal bays over the long term.
Dynamic lake modeling of two lakes outside of Uppsala Sweden
Lakes Lötsjön and Ramsen near the Fjällnora nature reserve both have issues with eutrophication (elevated nutrients), causing poor water quality and algal blooms during summer that limit recreation. As part of this project, lake water and sediment, inflows, and outflows are currently being sampled. Lake levels are being monitored continuously and a weather station has also been installed at the lake to gather local climatic data. All of this information will be used to build dynamic lake models for these two lakes. These models will then be used to test the future effects of different restoration measures designed to reduce nutrient loading to the lakes.
The final output of this project will be recommendations for measures to reduce eutrophication and improve water quality in both lakes. The project is conducted in collaboration with Sveriges lantbruksuniversitet and Uppsala kommun, and funded by the Swedish Water Authority via grant 1:11 – Measures for sea and freshwater environments.
