Atmospheric analysis

A list all of New Zealand's freshwater fish species.

Management of stream riparian areas - including vegetation and stock access - influences the health of streams and downstream water bodies.

There are many lines of evidence showing that NZ has warmed during the past century.

Grey mullet have a worldwide distribution and Aotearoa is at the southern limit of their range.

Nutrients in waterways are essential for the growth of algae and aquatic plants but too much can destroy an ecosystem.

West Coast is New Zealand’s wettest region, and this may be attributed to its exposure to the predominant westerly airflow over the country, combined with the orographic effect of the Southern Alps.

Tau kōura is a traditional Māori fishing method commonly used to harvest kōura or freshwater crayfish in areas where they are abundant.

Providing educational resources to school students and teachers is part of NIWA's commitment to helping young New Zealanders discover more about science and technology.

The climate of this zone is greatly dependent on the lie of the massive Southern Alps to the west.

Heavy rainfall is one of the most frequent and widespread severe weather hazards to affect New Zealand.

Longfin eels are the largest and longest-lived fish in New Zealand's freshwaters, and where they are present they are the top predator.

The seafood counter at your local supermarket has changed.