Background
Water management compensation has been proposed as a means to prevent the deterioration of the ecological status of water bodies resulting from new projects. The discussion on this topic has so far focused particularly on reducing nutrient loads. Although nutrient loading is a key challenge in water management, the ecological status of a water body may also deteriorate due to other pressures, such as hydrological changes, hazardous substances, or structural alterations, as well as their combined effects. When planning compensation measures, it is important to consider that the ecological status of a water body may decline due to a decrease in the status class of even a single quality element. This underscores the need for a comprehensive assessment that takes into account all factors affecting ecological status.
A wide range of water protection measures has been developed for reducing nutrient loads, and loading can now be estimated with reasonable accuracy. However, systematic evaluation of the effectiveness of these measures has been limited. Furthermore, current assessments rarely consider biological quality elements or other factors influencing the ecological status of water bodies, which restricts the ability to evaluate the effectiveness of measures.
Water management compensation can produce significant societal and social benefits, particularly when the measures also support the climate objectives of the land-use sector, the biodiversity goals of the Restoration Regulation, and recreational use of nature. Integrating compensation measures with broader environmental objectives may also increase their acceptability and effectiveness. Implementing compensation through compensation markets could offer a flexible and efficient operating model, but the conditions required for a functioning market call for further investigation and development.
Project objective
The aim of the project is to provide information on the potential of water management compensation to offset the impacts caused by key types of projects affecting water bodies. The study will identify the main water-related impacts of different project types and their connections to the ecological status of water bodies under different diffuse loading conditions. A central objective is to identify water protection and restoration measures suitable for each pressure situation and to assess their effectiveness and reliability.
The project will also evaluate the applicability and prerequisites of various process-based water system models for estimating loads, identifying loading sources, sizing measures, and assessing uncertainties related to these processes. In addition, the project will examine the conditions and possibilities for using models based on load-response relationships and species’ environmental responses.
The project aims to identify the factors that have contributed to successful water management initiatives, as well as the factors that have hindered the achievement of objectives. It will also assess the potential of water management compensation from the perspectives of socioeconomic impacts and compensation markets.
More information
Project manager Heikki Mykrä, Finnish Environment Institute, +358295251436, firstname.lastname@syke.fi