Abstract
The project will establish a scientific basis for choosing a replacement of the model currently used to assess acidification in Sweden’s EQC for Surface Waters. Three evaluation criteria will be employed: 1. Suitability of the assessments tool for the users needs 2. Accuracy and precision of the assessments 3. The costs of applying each method The proposed project would look at four alternative assessment methods. Two of these methods involve biogeochemical models (MAGIC and SAFE). Paleoecological reconstructions are a third, independent approach, though the role of paleoecology is likely to be as a complement to other models. The fourth alternative is a refinement of the existing empirical assessment model. Prototype assessment systems based on all four approaches will be created and then evaluated in assessments of several hundred lakes and watercourses. The final product will be design criteria as well as expected performance and costs for each of these four alternative approaches to acidification assessment for Sweden's EQC.