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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    Causes of loss of riparian vegetation

    What are the potential causes of riparian vegetation loss from land use activities?
  • Causes of Infectious Substances

    What are the potential sources of infectious substances from land use activities?
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    Latent and sensible heat fluxes from lake water surfaces

    The latent heat flux and evaporation from lakes are predicted to increase in a warming climate. This model script (written in Matlab) estimates latent and sensible heat fluxes from lake water surfaces.
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    If we restore it will they come?

  • Riparian vegetation and mining

    What are the potential impacts of mining activities on riparian vegetation around waterways?
  • Mapping marine biodiversity in Bay of Islands

    Research Project
    Building a publicly-available database from the results of a marine mapping survey of the Bay of Islands provides us with a stocktake of the local aquatic resource, in turn giving us valuable information on what areas we can better manage for the future.
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    Reintroduction: risk factors

    Successful reintroductions of species into a new stream habitat require carefully consideration and planning.
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    Stoneflies

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    Life history of invertebrates

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    Monitoring and maintenance

    Once you have identified the problem, and applied the necessary tools for restoring fish to your stream, the next phase of your project is to monitor the stream site to see whether restoration works.
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    Tools

    The tools available for restoring native fish to streams depend on what is causing fish to decline.
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    Identifying the problem

    Identifying the factors causing fish numbers to drop will allow you to determine which restoration tools you need to employ.