Estuaries

Latest news

A new study has identified seven freshwater species native to Aotearoa-New Zealand that will likely be highly or very highly vulnerable to climate change.

NIWA scientists have written a guide for managing mangroves, prompted by a desire for people to learn more about mangrove ecosystems, and what happens when they are removed.

As New Zealand's "Mr Eel", Niwa's Dr Don Jellyman has heard every tall tale. And some of them may be true.

New Zealand’s mangrove swamps and coastal marshes may be particularly adept at absorbing and storing the carbon we emit.

Our work

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.
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.
NIWA has developed an Urban Stormwater Contaminant (USC) model to enable urban planners to predict sedimentation and heavy metal accumulation in estuaries and identify problem areas in order to target mitigation measures.
Excessive nutrient input (eutrophication) threatens many New Zealand estuaries causing ecological problems, such as algal blooms and poor physical and chemical conditions for estuarine life.

Latest videos

The world's most mysterious fish

A video about The world's most mysterious fish. NIWA researchers are working with iwi to try to unlock the secrets of New Zealand tuna—freshwater eels. Every year tiny, glass eels wash in on the tide at river mouths along our coast. But where do they come from and how do they get there?

 

Fertilizer and lime research centre workshop

18 February 2014 to 20 February 2014

NIWA is sponsoring the 27th annual fertiliser and lime research centre workshop, held in Palmerston North on the 18 - 20 February.

The workshops are a means for information transfer amongst industry, scence, policy and regulatory personnel concerned with primary production in New Zealand.

For more information see the Fertiliser and lime reasearch centre workshop website 

NZ Coast is a collection of information about the New Zealand coastal environment and related hazards.

Welcome to Freshwater Update 54. This issue features some of the latest work from our Freshwater and Estuaries teams, Water Quality maps and information and  River flow maps for Autumn.

Latest news from the centre includes: Float your boat! Scientists use hi-tech miniature Q-boat to measure river flows 

Moored underwater cameras have exposed the secret lives of orange roughy nearly 900 metres below the ocean surface.

Welcome to the latest edition of Coasts Update. Here we bring you news of some of NIWA's latest research on aspects of coastal ecology, and the possible impacts of climate change on one of our coastal communities.

Many of New Zealand's rivers fail to meet national guidelines for nutrient levels. NIWA has developed the Catchment Land Use & Environmental Sustainability (CLUES) estuary tool to predict the effects of land use on estuarine nutrient concentrations.

In the past half century, mangroves have increased in extent in estuaries and tidal creeks throughout the upper half of the North Island.

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All staff working on this subject

Principal Scientist - Coastal and Estuarine Physical Processes
Principal Scientist - Ecosystem Modelling
Principal Scientist - Marine Ecology
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Freshwater Hydro-Ecologist
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Coastal and Estuarine Physical Processes Scientist
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Principal Scientist - Marine Ecology
Fisheries Acoustics Scientist
Principal Scientist - Coastal and Estuarine Physical Processes
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Coastal Technician
Freshwater Fish Ecologist
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Marine Ecology Technician
Hydrodynamics Scientist
Resource Management Scientist
Regional Manager - Auckland
Environmental Research/Science Communication
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