NIWA offers a range of standard toxicity tests for both freshwater and marine environments.

Forest plantations in Aotearoa can be found on flat, gently rolling, or very steep terrain.

Currently, the most reliable method to estimate the age of tuna is by examination of their otoliths or "ear bones"

Short-term to long-term data estimation

The High Performance Computing Facility (HPCF) is supercharging New Zealand science.

These datasets are available in a range of formats.

Monthly climate summaries from December 2001 to the present.

The Standardised Precipitation Index (SPI) is a simple measure of drought (and also of very wet conditions) and is based solely on the accumulated precipitation for a given time period.

How healthy is your stream? SHMAK - the New Zealand Stream Health Monitoring and Assessment Kit - has been designed to help you find out.

One of the most common species of freshwater fish in Aotearoa is the common bully or toitoi.

What are the impacts of water dams on water quality and mahinga kai?