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Restoring fish food
https://niwa.co.nz/our-science/freshwater/tools/guide-to-restoring-freshwater-native-fish/tools/restoring-fish-food
Identifying the problem for kōura
https://niwa.co.nz/node/111623
Applying the right tools to restore kōura to lakes and streams
https://niwa.co.nz/node/111629
Guidance manual
https://niwa.co.nz/freshwater/management-tools/water-quality-tools/sampling-urban-streams-stormwater/guidance-manual
Eutrophication Explorer
https://niwa.co.nz/freshwater/management-tools/water-quality-tools/eutrophication-explorer