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Two Māori carvers head to Antarctica next week to complete and install a traditional carving at Scott Base, New Zealand’s headquarters on the ice.
The diary and hand-drawn maps of a nineteenth century geologist has enabled NIWA scientists to confirm the former site of the iconic Pink and White Terraces at Lake Rotomahana.
Local hapū and NIWA are working together to find out more about juvenile freshwater eels or tuna in streams connecting to the Wairua River in the Wairoa catchment in Northland.
Erica Williams' story starts with the website of Moerewa School, where pupil Tyra-Lee explains her connection to a very special place in her small Far North town.

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NIWA recently hosted visitors from Northland to view cultivated plants from Lake Ōmāpere that are now ‘extinct in the wild’, and discussed plans for their reintroduction to the lake in the future. 

Māori communities around the country note that the abundance, size and/or distribution of tuna, kōura and kāeo/kākahi is declining and that current populations aren’t sufficient to meet their needs.

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Tracing tsunamis through history
Weaving whakapapa and science together to trace tsunami through history.
Tracing tsunamis through history
Weaving whakapapa and science together to trace tsunami through history.

Freshwater Update 80 brings you the latest information from our Freshwater & Estuaries Centre, with articles that cross a broad spectrum of freshwater research. This edition has articles about the sources of plastics in our waterways, the discovery of long-lost lake plant species and a breakthrough in research about freshwater mussels/kākahi.

Two Māori carvers head to Antarctica next week to complete and install a traditional carving at Scott Base, New Zealand’s headquarters on the ice.
The diary and hand-drawn maps of a nineteenth century geologist has enabled NIWA scientists to confirm the former site of the iconic Pink and White Terraces at Lake Rotomahana.
Te Huringa ki te Rangi is a decision-making model to support indigenous and coastal communities who are grappling to understand and evaluate climate change impacts and risks, and how to integrate these into their development plans for the future.
Local hapū and NIWA are working together to find out more about juvenile freshwater eels or tuna in streams connecting to the Wairua River in the Wairoa catchment in Northland.
Erica Williams' story starts with the website of Moerewa School, where pupil Tyra-Lee explains her connection to a very special place in her small Far North town.

Māori communities around the country note that the abundance, size and/or distribution of tuna, kōura and kāeo/kākahi is declining and that current populations aren’t sufficient to meet their needs.

Iwi has joined forces with councils and NIWA to restore an estuarine ecosystem to its former health.
NIWA is working alongside Māori to develop gateways to science and technology partnerships that are helping grow the Māori economy.
When you’ve spent a long time viewing something a particular way, it’s hard to recognise when it changes.

NIWA recently hosted visitors from Northland to view cultivated plants from Lake Ōmāpere that are now ‘extinct in the wild’, and discussed plans for their reintroduction to the lake in the future. 

There are a number of nationally available resources for the New Zealand public, institutions and companies who need access to well-maintained long-term data repositories. Some of these resources are listed here.
Instream structures such as hydroelectric dams may act as barriers to fish migration, and have the ability to alter the ecological connectivity of freshwater environments.

As eels only spawn once before death, they require different management to other fish.

On a global scale, market demand for eels as a foodstuff is high and declines in wild eel production mean that aquaculture is being put forward as a potential provider.
The majority of New Zealanders are able to recall a story about catching eels when they were children, to eat from the camp fire or enter into the local pig hunting competition.
Tangata whenua in the North and Chatham Islands may customarily fish under Regulation 27A, Fisheries (Amateur Fishing) Regulations 1986 in areas that are not yet covered by the Fisheries (Kaimoana Customary Fishing) Regulations 1998.
From about the 1840s, willows (Salix spp.) were introduced to New Zealand by early settlers.
Finding and collating information that already may exist for the lake, river or stream you are interested in, choosing the right sampling methods, and making sure that the data you work hard to collect is stored safely are all important things to consider in your monitoring programme.
There are a range of different sampling methods which can be used, including electric fishing, fyke nets, Gee-Minnow traps, scoop nets, whitebait nets and observation.

Site selection and timing are important factors to consider when designing a representative sampling strategy .

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All staff working on this subject

Principal Scientist - Aquatic Pollution
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Fisheries Scientist
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Environmental Scientist
Environmental Research/Science Communication
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