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What ails our estuaries - problems and solutions
Estuaries are at the bottom of the freshwater drainage network and, effectively, are a part of it. This means that every time we act to protect and enhance streams and rivers we are also benefiting the estuary at the downstream end. -
Wastewater Treatment
Wastewater treatment is the separation and extraction of solid waste from liquid waste, and the removal of nutrients and pathogens. -
Tuna - habitat
Tuna are found in all sorts of habitats (places), including coastal estuaries, lakes, wetlands, rivers, mountain streams and even alpine tarns. -
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. -
Taonga Species Series: Kākahi
Feature story06 June 2017What does science tell us about New Zealand freshwater mussels? -
Kākahi
The kākahi or freshwater mussel was a valuable mahinga kai resource for many Māori. -
New Zealand fish passage guidelines
Research ProjectThe New Zealand Fish Passage Guidelines sets out recommended practice for the design of instream infrastructure to provide for fish passage. -
Wastewater treatment activities
Rural, urban, and suburban wastewater treatment methods. -
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. -
Sediment and mining
How can mining activities influence sediments in waterways? -
Forestry activities
Forest plantations in Aotearoa can be found on flat, gently rolling, or very steep terrain.