Ecosystems

Latest news

Researchers on hunt for fish nurseries

7 August 2020

NIWA researchers are heading out from Tasman early next week to survey an area thought to be home to important juvenile fish nurseries.

A cold day in the office

Feature story

28 July 2020

Five specialist NIWA divers were left ‘gasping’ during their recent plunge under the ice near Scott Base.

Tangaroa heads back to sea – with social distancing

Media Release

13 May 2020

NIWA’s flagship research vessel Tangaroa will sail out of Wellington Harbour on Sunday for the first scientific voyage since the lockdown.

Tubeworm discovery in Hauraki Gulf cause for celebration

Media Release

19 March 2020

Scientists mapping the Hauraki Gulf seafloor have discovered huge colonies of tubeworms up to 1.5 metres high and collectively covering hundreds of metres providing vital habitats for plants and animals.

Our work

Maniapoto Cultural Assessment Framework

Maniapoto Māori Trust Board and NIWA worked collaboratively during 2018-19 to support Ngāti Maniapoto whānau to reconnect with and participate in the assessment of their freshwater according to their values.

The Whatawhata Integrated Catchment Management Project

The Whatawhata Integrated Catchment Management (ICM) Project is the longest continuously monitored before-after-control-impact (BACI) catchment-scale study in New Zealand.

IPBES Nature Futures Workshop

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.

Restoration of seagrass beds in Whangarei Harbour

Seagrass beds form an important undersea habitat for small fish, seahorses and shellfish in New Zealand.

Latest videos

Taking the pulse of Antarctica’s ocean ecosystem

Niwa scientists have anchored an echosounder to the sea floor of Terra Nova Bay that could reveal the mystery of silverfish reproduction under the Antarctic ice.

Southern Blue Whiting Fishery

NIWA fisheries scientist Dr Stuart Hanchet describes the history and management of the southern blue whiting fishery, centred around New Zealand's subantarctic islands.

Kaikoura Canyon Seabed Life

The video represents a number of clips that have been spliced together to illustrate the abundant life associated with the muddy seabed sediments in Kaikoura Canyon at 1000m.

Restoration of aquatic ecosystems

This project aims to increase our knowledge of aquatic ecosystems and their restoration, and apply this to degraded streams, rivers, lakes and estuaries.

New freshwater species programme

A new programme at NIWA will focus on finding ways to protect our freshwater species now and in the future.

Updated freshwater pests guide out now

NIWA has updated its guide to freshwater pests for the first time since 2013.

Staff profile: Dr Simon Woodward

In this edition we welcome Dr Simon Woodward to the team and find out how he came to work at NIWA.

Maniapoto Cultural Assessment Framework

Maniapoto Māori Trust Board and NIWA worked collaboratively during 2018-19 to support Ngāti Maniapoto whānau to reconnect with and participate in the assessment of their freshwater according to their values.

Researchers on hunt for fish nurseries

Media Release

7 August 2020

NIWA researchers are heading out from Tasman early next week to survey an area thought to be home to important juvenile fish nurseries.

A cold day in the office

Feature story

28 July 2020

Five specialist NIWA divers were left ‘gasping’ during their recent plunge under the ice near Scott Base.

Freshwater species - publications

These are some recent publications related to the freshwater species ecology and management programme.

Freshwater species ecology and management

The abundance and diversity of life in our rivers, lakes and estuaries is the ultimate indicator of the health and wellbeing of our aquatic ecosystems. NIWA is helping to ensure that New Zealand’s unique and iconic freshwater species are healthy, abundant and thriving.

Constructed wetland guidelines

Constructed wetlands are a water quality restoration tool that can reduce levels of sediment, nutrients and microbes such as E. coli.

The Whatawhata Integrated Catchment Management Project

The Whatawhata Integrated Catchment Management (ICM) Project is the longest continuously monitored before-after-control-impact (BACI) catchment-scale study in New Zealand.

Tangaroa heads back to sea – with social distancing

Media Release

13 May 2020

NIWA’s flagship research vessel Tangaroa will sail out of Wellington Harbour on Sunday for the first scientific voyage since the lockdown.

Tubeworm discovery in Hauraki Gulf cause for celebration

Media Release

19 March 2020

Scientists mapping the Hauraki Gulf seafloor have discovered huge colonies of tubeworms up to 1.5 metres high and collectively covering hundreds of metres providing vital habitats for plants and animals.

Fish snack on microplastics

Media Release

22 October 2019

Research shows how fish are being affected by microplastics.

Freshwater Update 81, June 2019

Freshwater Update 81 brings you the latest information from our Freshwater & Estuaries Centre, with articles ranging from how NIWA scientists are solving the longfin eel migration mystery, how we're taking you diving with us at Fieldays, and a word from one of the editors of the new Lakes Restoration Handbook.