Oceans

NIWA hosted an IPBES workshop entitled “Visions for nature and nature’s contributions to people for the 21st century” held from 4-8 September 2017 in Auckland.

The sounds of whales and dolphins rarely seen in New Zealand waters have been recorded in a pioneering underwater sound project.

Māui dolphins, a subspecies of Hector’s dolphins, are listed as nationally critical in New Zealand with a population estimate between 57 and 75 dolphins over one year old.

Biological traits analysis is a valuable tool for measuring ecosystem function.

Where and when do white sharks occur in New Zealand waters, and how can fisheries bycatch be reduced?

Rig shark is an important inshore commercial fish species in New Zealand, and we need to understand more about their habitats, movements, nursery grounds and vulnerability to human impacts to ensure they are managed sustainably and their productivity is enhanced.

Iron Fertilisation

This research project investigated whether the mechanisms for periphyton removal in rivers relate more directly to hydraulic and geomorphic conditions than flow metrics.

The main breeding population of New Zealand sea lions at the Auckland Islands has halved in size since the late-1990s; NIWA scientists are working with the government and experts from around New Zealand and overseas to understand why.

A NIWA-led project to tackle coastal acidification in New Zealand.

We don’t clearly understand the ecological effects of commerical toothfish fishing in the Ross Sea region. To improve our knowledge, we conducted a survey of demersal (bottom-dwelling) fish species on the Ross Sea slope - particularly grenadiers and icefish - during the 2015 Antarctic Ecosystems Voyage.

Ocean acidification conditions around the New Zealand coast are being measured to establish baseline conditions and to quantify future change.