Research and analysis

Risk assessment methodology for determining nutrient impacts in surface freshwater bodies

Guidance to Environment Agency and Scottish Environment Protection Agency staff, researchers and external agencies involved in implementation of the Water Framework Directive.

Documents

Risk Assessment Methodology for Determining Nutrient Impacts in Surface Freshwater Bodies (Science Report SC020029/SR)

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Risk Assessment Methodology for Determining Nutrient Impacts in Surface Freshwater Bodies (Science Summary SC020029/SS)

This file may not be suitable for users of assistive technology. Request an accessible format.

If you use assistive technology (eg a screen reader) and need a version of this document in a more accessible format, please email enquiries@environment-agency.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Detail

This project’s aim was to develop a method to carry out the initial risk assessment for lakes, specifically in relation to nutrient pressures. Approaches of increasing sophistication were developed to assess the size of diffuse and point-source nutrient pressures. A nutrient classification for different lake types was produced to assess the impact of these pressures. Approaches to ecological classification for phytoplankton composition and abundance in lakes and slow-moving rivers were also developed, taking phytoplankton as the biological element most sensitive to nutrient pressures.