Coasts

The tools available for restoring kōura to lakes and streams depend on what is causing kōura to decline.

This year is the 2400th anniversary of the birth of Aristotle, a philosopher and scientist (384 BCE), who among other many great achievements was the first person to describe the structure, ecology, and diversity of sea urchins – way back in the 4th century BC.

Habitat and biological factors factors affect why kōura rare or absent in your waterway.

First, determine if kōura should be present in your stream.

Identifying the factors causing kōura numbers to decline will allow you to determine which restoration tools you need to employ.

Habitat degradation and the introduction of exotic plant and fish species have adversely affected kōura populations throughout New Zealand. However, there are a number of measures that we can use to restore kōura populations in lakes, rivers and streams.

New research has revealed that citizen science monitoring of water is a win-win for scientists and volunteers—one gains access to new data, and the other the skills and confidence to become involved in discussions over what is happening to their streams.

NIWA is looking for people who have had a long association with the Hauraki Gulf or Marlborough Sounds to help them with a research project on juvenile fish habitats.

Scientists surveying the seabed in areas affected by last week’s earthquake have confirmed a 34km rupture in the offshore continuation of the Kekerengu Fault, known as the Needles Fault.

Iwi has joined forces with councils and NIWA to restore an estuarine ecosystem to its former health.

We have reached the end of our sampling program up in the Kermadecs and we’re on our way home