In the EU project LIFE Good Stream we work to improve the ecological status from "moderate" to "good" ecological status in Trönningeån, located south of Halmstad. This means that the lower the concentration of phosphorus in the water, increasing fish density and improve biodiversity closest to the river. Trönningeån flows from Knorrasjön inland at about 10 km in length to the coast before it flows into Fylleån just a few hundred meters its mouth into the sea. The catchment area is 33 km2 and about 50% is agricultural land. In his last note cross the stream society Trönninge, who sometimes have problems with flooding. IÄven these problems matter addressed in the project.
To achieve this we will nlägga different types of wetlands with a view to improving water quality and habitat for fish and organisms.
No action is planned from the beginning, but all plans are developed in cooperation with markägana and their families. To participate in the project is voluntary and free of charge.
We work with the Maps application qgis which we establish general maps of test sites for water sampling and preparation of planning documents that are instrumental in the selection and placement of different types of wetlands. During the project, we will take water samples every two weeks to constantly see changes in the concentration of nutrients in Trönningeån. Together with students from the University of Halmstad, we do additional studies of nutritional status in the river and investigate other issues, such as biodiversity.
Life-Good Stream project is implemented with the County Board of Halland and Halmstads Municipality as partners. We want to create a successful project based on close relationships with landowners and partners, where together we make a difference to Trönningeåns local environment and find interesting solutions that can be applied to other rivers in Sweden and Europe.
Cinderella (facce ERA NET + (BMBF)
CINDERELLA is a project within the ERA-NET Plus action “Climate Smart Agriculture: Adaptation of agricultural systems in Europe”.
Conventional agriculture on drained peatlands causes enormous greenhouse gas (GHG) emissions. The focus of the CINDERELLA project is research on rewetting of drained peatlands to minimise GHG emissions while maximising ecosystem services. Further, CINDERELLA aims to develop management strategies and disseminating this innovative concept over Europe.
In the Swedish part of the project, nutrient removal in peat soil wetlands will be monitored at different water regimes. This will be done in a newly created pilot plant with four small ponds where water levels can be controlled and the water flow measured.
A Vinnova project, Innovations for a Sustainable Society.
The project is part of efforts to find sustainable methods of agriculture and contribute to several national environmental objectives.
Hushållningssällskapet Halland and Halmstad University will build a pilot plant and, together with a large network of wetland specialists evaluate a new concept for the treatment of nutrient losses from agricultural land into drains and rivers / seas.
The goals are to develop new environmental tools and lay the foundation for a new approach where leaking
nutrients are treated as a resource and not as an environmental problem.
The pilot plant is a Level Wetland which is a new type of wetland with focus on the recycling of nutrients, where the problem of diffuse leakage of nutrients from agricultural land is attacked in a completely new way. In this pilot project the level wetland is optimized for immobilisation of nutrients, unlike traditional wetlands in Sweden, where the optimization has focused on encouraging the wasteful process of denitrification. The degree of purification is expected to be especially great when permanently low water levels favors sedimentation and when temporarily high flows can be infiltrated across wooded land surfaces. Nutrients can then be harvested in the form of nutrient-rich sediment and trees.
To use our measurement technology, we have separated the level wetland part (in the background) from infiltration part (in the foreground). We may collect and measure all the water that leaves both.
An inlet well gathers several drain tiles along with the test site. All outgoing flows from the different parts and different levels will be sampled and measured in the exit well.
We have placed three bridgeheads of concrete to take us out in the water associated with sediment sampling. The whole plant is relatively deeply buried in the subsoil that consists of heavy clay.
|© Peter Feuerbach|