Latest news

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.
Cathy Kilroy is quick to admit she’s a person who doesn’t like throwing anything away.
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.
Do you know where in New Zealand to find Neptune’s necklace or rimurapa? Or how to tell apart Carpophyllum from Cystophora?

Our work

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.
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.

Articles about our Freshwater and Estuaries-related specialist analytical services involving resource surveying and information.
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Articles related to this section.
Articles related to our Freshwater and Estuaries-related biodiversity services.
The centre provides research, services and solutions spanning the spectrum of freshwater plant problems within New Zealand.

New Zealand’s seagrass meadows are important, but threatened, coastal habitats that we still know little about. Scientists from NIWA are undertaking a nationwide survey of these vibrant underwater meadows, to find out more about the life they support and their wider role in the marine ecosystem.

Another toxic algae is added to the list of harmful marine algae in the waters around New Zealand.

Two rare New Zealand seaweeds have been discovered in Northland, and they could have exciting commercial applications for the pharmaceutical and biotechnology industries.

The toxic algal species that has caused the current outbreak on the west coast of the North Island has finally been detected in Wellington Harbour.

New findings by scientists at the National Institute of Water and Atmospheric Research (NIWA) have revealed that the death of kina, starfish, and possibly other fishes, in late January and early February off the Kaikoura coast appears to be linked to toxic algae.



All staff working on this subject

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Principal Scientist - Aquatic Pollution
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Marine Biogeochemistry Technician
Wastewater Scientist
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Regional Manager - Wellington
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Marine Biologist (Biosecurity)
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Marine Biologist
Algal Ecologist
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Principal Technician - Environmental Chemistry and Toxicology
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