On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

Atmospheric analysis

NIWA has been using advanced scientific instruments to measure atmospheric trace gases and isotopes for over 50 years.

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    Tuna - growth

    New Zealand longfins are one of the largest eel species in the world.
  • Tuna - biology and ecology

    Freshwater eels have an unusual life cycle which sees them travelling between the ocean, estuaries and freshwaters.
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    TAN1116 voyage log - technical updates

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    Fisheries Oceanography II, Chatham Rise (TAN1116) - Voyage Log

  • Marine food webs

    Research Project
    We need information on the food web structures of our marine ecosystems in order to manage the effects on the ecosystem of fishing, aquaculture and mining, as well as understanding the potential impacts of climate variability and change on our oceans. 
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    Antarctica

    NIWA scientists have worked for many years on Antarctic atmospheric processes and aquatic ecosystems.
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    International Greenhouse gas experts meet in Wellington

    News article
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    Lake assessment tool earns high honour for NIWA scientist

    News article
    John Clayton, a principal scientist in the fields of aquatic biodiversity and biosecurity based at NIWA's Hamilton office, has won a 2011 Kudos award for his leading role in the development of LakeSPI  (Lake Submerged Plant Indicators).
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    EcoConnect Rena Feed

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    Heavy rainfall - current NIWA research

    NIWA's work seeks to improve our understanding of the key dynamic and physical processes which are responsible for heavy rainfall , and to improve the heavy rainfall forecast.
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    Watershed book from freshwater fisheries expert

    News article
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    Trout habitat mapping protocol