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Kanae
Grey mullet have a worldwide distribution and Aotearoa is at the southern limit of their range. -
Temperature changes
Temperature affects the number and type of animals and plants that live in a waterway. -
Estuaries
Education ResourceAn estuary is a partially enclosed body of water formed where freshwater from the land meets and mixes with saltwater from the ocean. -
Tuna - diet
Longfin eels are the largest and longest-lived fish in New Zealand's freshwaters, and where they are present they are the top predator. -
Freshwater monitoring and reporting
Research ProjectNIWA's research on freshwater monitoring and reporting is one of three research areas within the 'Values, Monitoring and Outcomes' (VMO) programme led by Landcare Research. -
Forestry activities
Forest plantations in Aotearoa can be found on flat, gently rolling, or very steep terrain. -
Freshwater fish species list
A list all of New Zealand's freshwater fish species. -
Stream periphyton monitoring manual
This manual prescribes a set of sampling and analysis protocols applicable to most of the common stream habitats in New Zealand. -
Mahinga kai and migration
A high proportion of New Zealand’s native freshwater fish fauna need to migrate to and from the sea. -
Kōaro
Kōaro are excellent climbers and like clear, swiftly flowing, forested streams. -
Common hydrological terms
Education ResourceDescriptions of the common terms that explain the processes that occur in hydrology. -
Tuna - tuna heke (downstream migrants)
Once eels become migrants (also known as tuna heke or tuna whakaheke) they stop feeding, and progressively develop the external features that clearly distinguish them from 'feeders'.
