Estuaries

Latest news

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.

New research has revealed that citizen science monitoring of water is a win-win for scientists and volunteers—one gains access to new data, and the other the skills and confidence to become involved in discussions over what is happening to their streams.

Our work

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.
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.
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.

 

One method of promoting the repopulation of declining shellfish beds is to reseed them with adults of the target species collected from other areas. Reintroducing adult shellfish is labour intensive but will, if successful, encourage juveniles to recruit to declining areas and replenish them to historic levels.

Estuarine restoration research is relatively new in New Zealand and has been largely instigated by community groups that have become increasingly concerned with the decline of plant and animal species.

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.

NIWA and the Bluff Oyster Management Company have just completed a pre-season survey of the oyster beds in Foveaux Strait.

When deployed underwater, this self-contained instrument records and analyses water waves. It can trigger other instruments and send alarms via a communications link.

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All staff working on this subject

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