Återvätning av Hakamosse : En vattenkemisk undersökning samt underlag till kontrollprogram

Sammanfattning: Historically, approximately 25% of Sweden's wetlands have been ditched and drained in favour of agriculture, forestry, infrastructure and peat extraction. Major investments have been made in recent years to recreate the natural and environmental benefits that have been lost. Among other things, this has given rise to Falkenberg municipality's plans to apply for funding to rewet Hakamosse. The purpose of the study is to provide Falkenberg municipality with data through analysis of the current situation regarding water chemical parameters and give suggestions on sampling points and suitable parameters to monitor for Hakamosse. The study is limited to hydrology, water chemistry and greenhouse gases. The water chemistry study was performed by sampling and analysis from three sampling points on five occasions. Scientific information and knowledge gained from other rewetting projects has been collected from scientific literature, reports and semi-structured interviews. The chemical water analysis results show variations between the sampling points and the sampling occasions but with few deviating values. The control program's water chemical monitoring should build on the current situation analysis in this study. Based on the literature study, hydrological measurements should include measurements of groundwater levels and water flow. Greenhouse gas emissions can be measured with instruments or calculated using the IPCC's emission factors. A limiting factor in the implementation of monitoring programs is often the availability of time and financial resources, which often leads to a balance between sampling frequency and the number of sampling points depending on the parameter and method. The results also highlight that a risk analysis is needed as the rewetting of Hakamosse may have a major impact on the surrounding environment.