Freshwater

Citizen scientists take on Hutt River

Excessive nutrient input (eutrophication) threatens many New Zealand estuaries causing ecological problems, such as algal blooms and poor physical and chemical conditions for estuarine life.

A day out measuring at Molesworth

Approximately 500 Aquatic invertebrate taxa are described in this database, made available to assist with the identification of specimens.

A new online survey is forming the basis of the National Riparian Restoration Database, which will help scientists to improve understanding of how riparian buffers benefit waterways.
Take the survey

Since the end of June, a barge has been stationed just off Wellington’s Miramar Peninsula drilling into the seabed to find an alternative water source for the city.

A sophisticated buoy has been deployed in Wellington Harbour to “phone home” information about currents, waves and water quality in the harbour.

NIWA, supported by DairyNZ, are asking anyone who has planted along stream banks to take a short survey.

NIWA is undertaking a five-year nationwide study to find out how different approaches to riparian planting influence water quality improvements and to provide better guidance to the people and groups undertaking stream restoration.

A buoy with the ability to “phone home” has been deployed in Wellington Harbour today to monitor currents, waves and water quality in the harbour.

Local hapū and NIWA are working together to find out more about juvenile freshwater eels or tuna in streams connecting to the Wairua River in the Wairoa catchment in Northland.

There’s another way of measuring the health of rivers – the health of invertebrate populations that need them, says John Quinn, NIWA Chief Scientist, Freshwater
and Estuaries.