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Guidance on look-up tables for setting nutrient targets for periphyton

Publication date:  August 2020
Publication reference number:  ME 1517

The National Policy Statement for Freshwater Management 2020 (Freshwater NPS 2020) requires councils to manage periphyton in rivers as a compulsory attribute to achieve the value ecosystem health.This guidance is intended to provide a starting point for defining nutrient concentrations for managing to the periphyton attribute, as required by the Freshwater NPS 2020 clause 3.13: Special provision for attributes affected by nutrients. It should be read together with the Freshwater NPS 2020 and other guidance.