b'An integrated assessment framework for assessment of key ecosystem services and effect on aquatic ecologyRankinen K1, Usva K2, Lilja H2, Saarinen M2, Valkama E2 and Vh J-P31Finnish Environment Institute2Natural Resources Institute Finland3The Association for Water and Environment of Western UusimaaEcosystems generate a range of goods and services important for human well-being,collectively called ecosystem services (ES). Services are often associated with high exploitation of the ecosystem; the risk is an unsustainable use of nature. The catchment is the appropriate scale to observe and quantify processes related to the water cycle. In the Karjaanjoki river basin, we aim to sustainable agricultural production that does not harm water ecosystems. Indicator species are trout and river pearl mussels. For that purpose we chained mathematical models to assess the threats of human activity in the catchment area to ecosystem services. These activities can influence water quality and thus living conditions of these species. As most of the decisions are made by individual farmers, we do sustainability analysis on farm level.This is considered in the conceptual framework by including sustainability indicators, i.e.indicator combining capacity and flow. We created an integrated model chain to allowquantification of main ecosystem freshwater services and assessment of different loadingscenarios from agricultural practices. The integrated model system will allow:assessment of nutrient and sediment loading from fields (load)identification of retention areas for nutrients and suspended solids (capacity)planning of reduction measuresassessment of impacts on habitats of sensitive/protected freshwater species (benefit)analysis of sustainability performance of different agricultural products (flow)25'