Information about past climate is obtained from piecing evidence together from various sources.

The 2012-2013 drought affected the entire North Island plus the west coast of the South Island.

We have prepared a breakdown of the different guidelines that are available for sampling freshwater fisheries. The overview provides links to key documents that explain what should be considered when designing fish monitoring studies and how to implement the various sampling techniques.

Temperature affects the number and type of animals and plants that live in a waterway.

An interactive guide to the sponges of New Zealand.

A summary of up-coming tropical cyclone seasons, issued 6-monthly.

How can we help you?

NIWA's seafood sector work comprises our fish, fisheries and aquaculture research and consultancy.

Dissolved oxygen (DO) is a relative measure of the amount of oxygen (O2) dissolved in water.

This identification guide covers the common crustose coralline algae found in central New Zealand.