Algae

Latest news

Scientists listen to the sound of photosynthesising seaweeds

22 October 2018

NIWA scientists are hoping they may one day be able to “listen” to kelp forests in the waters around New Zealand to find out how they are faring.

From small beginnings a valuable collection grows

Media Release

24 July 2018

Cathy Kilroy is quick to admit she’s a person who doesn’t like throwing anything away.

Q&A - Bloomin' algae!

Feature story

30 April 2018

A hot and steamy summer saw Kiwis heading down to rivers and lakes to cool off. But they weren’t the only ones enjoying the warmer weather – algae had a great time too.

Beautiful Browns

16 September 2016

Do you know where in New Zealand to find Neptune’s necklace or rimurapa? Or how to tell apart Carpophyllum from Cystophora?

Our work

Reclassifying karengo (nori)

The seaweed known colloquially as nori in Japanese - used for making sushi - or karengo in Maori has been reclassified by an international team of scientists including NIWA's Dr Wendy Nelson.

Geomorphology influences periphyton abundance

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

This project will demonstrate the commercial feasibility of producing bio-oil by the conversion of algae biomass that has been grown in wastewater treatment facilities. In particular we aim to maximise algae production in High Rate Algal Ponds (HRAP) by adding carbon dioxide, and demonstrate energy efficient conversion of algal biomass to bio-oil.

Scientists listen to the sound of photosynthesising seaweeds

Media Release

22 October 2018

NIWA scientists are hoping they may one day be able to “listen” to kelp forests in the waters around New Zealand to find out how they are faring.

From small beginnings a valuable collection grows

Media Release

24 July 2018

Cathy Kilroy is quick to admit she’s a person who doesn’t like throwing anything away.

Q&A - Bloomin' algae!

Feature story

30 April 2018

A hot and steamy summer saw Kiwis heading down to rivers and lakes to cool off. But they weren’t the only ones enjoying the warmer weather – algae had a great time too.

Empowering the community to monitor river swimming spots

Enthusiatic community members have been working with NIWA and Greater Wellington Regional Council staff to monitor water quality and other indicators of importance to people who recreate in the Hutt River near Poets Park.

Geomorphology influences periphyton abundance

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

Beautiful Browns

16 September 2016

Do you know where in New Zealand to find Neptune’s necklace or rimurapa? Or how to tell apart Carpophyllum from Cystophora?

Beautiful Browns

An interactive guide to the large brown seaweeds of New Zealand.

New hi-tech tool helps identify what’s in your stream

Media Release

3 August 2015

Identifying creepy crawlies in your local stream just got a whole lot easier and faster, thanks to a new 3D identification system developed by a NIWA researcher.

Reclassifying karengo (nori)

The seaweed known colloquially as nori in Japanese - used for making sushi - or karengo in Maori has been reclassified by an international team of scientists including NIWA's Dr Wendy Nelson.

Algae ID guides

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

Coralline Algae

This identification guide covers the common crustose coralline algae found in central New Zealand.

Marine extremes and everything in between

1 July 2012 to 5 July 2012

Marine extremes and everything inbetween is a joint conference between the Australian Marine Sciences Association and the New Zealand Marine Sciences Society (AMSA-NZMSS).

NIWA is sponsorsing prizes for the best student oral and poster presentations at the conference .

For more information about go to the AMSA-NZMSS website

Association of Women in the Sciences

28 July 2011 to 29 July 2011

NIWA is sponsoring the Association of Women in the Sciences (AWIS) conference being held in Auckland.

For more information about the conference see AWIS conference website

NIWA Alumni 3, June 2011

Welcome to NIWA's third Alumni Update – an e-newsletter for past NIWA employees.

Summer Series 4: Would you like seaweed with that?

7 January 2011

Next time you bring home fish and chips, consider a sprinkling of health-giving seaweed.

NIWA Alumni 2, November 2010

Welcome to NIWA's second Alumni Update – an e-newsletter for past NIWA employees.

It’s pretty in pink and it doesn’t stink!

8 March 2010

NIWA scientists are in the pink! They’re studying the deep candy pink or purple coralline algae, abundant around the New Zealand shoreline and throughout the world, which play a vital role in marine ecosystems.

Spectacular oceanic bloom identified

9 November 2009

Scientists at NIWA have identified the source of the giant plankton bloom featuring in spectacular NASA satellite images.

Marine identification guides and fact sheets

Useful information and resources on New Zealand's marine flora and invertebrate fauna.

Wastewater to bio-oil project

19 October 2009

A world leading research project demonstrating wastewater conversion to bio-oil.

What is ocean acidification?

Ocean acidification is the name given to the lowering of pH of the oceans as a result of increasing carbon dioxide (CO2) in the atmosphere.

Algal monitoring service

Blooms of hazardous cyanobacteria (blue-green algae) in rivers, lakes and reservoirs can cause problems for both animal and human health. How can you find out whether an algal bloom is potentially toxic?

Bio-oil from wastewater algae

Applying the science: didymo

Didymo predictive maps, quantifying the potential threat from didymo to any river reach in New Zealand, are now in use, thanks to work by NIWA scientists. Potential percentage didymo cover and mat thickness can be mapped, based on models combining what is known about didymo biology with specific river and climate features.

Issue 27, 2008

Epic Antarctic voyage complete: analysis begins

Applying the science: didymo

Major port biosecurity surveillance underway

What risk from alien fish?

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