Freshwater

A collection of ID guides to algae. Groups include major freshwater algal groups, diatoms and blue-green (cyanobacteria), red and green algae.

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

References, further reading, and links to useful websites.

Some simple steps to minimise the effects of aquaculture activities on water quality and mahinga kai.

Each waterway has its own particular characteristics relating to water flow, velocity, and quantity.

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

This collaborative NZaid project worked with coastal Fijian villagers at Votua on the Coral Coast of Viti Levu to develop pragmatic water supply and waste treatment solutions to protect public health and reduce contamination of coastal waters.

El Niño accounts for less than 25 percent of the year-to year variance in seasonal rainfall and temperature at most locations in New Zealand.

In Kaitiaki Tools the term mahinga kai generally refers to indigenous freshwater species that have traditionally been used as food, tools, or other resources.

Aotearoa’s main urban areas cover approximately 2% of total available land.