Chemical contaminants are chemicals toxic to plants and animals in waterways.

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

How may the activities of the mining industry influence water resources?

These datasets are available in a range of formats.

An illustrated example, showing how to input data and interpret SolarView results.

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.

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

If you list all the historic rainfall totals for a particular month and for a specific location, rank these from lowest to highest, then divide the list into ten equal parts, you have identified the ten rainfall deciles for that month and for that location.