Freshwater

A six metre-long autonomous trimaran fitted out with a NIWA echosounder is being used as part of an innovative research collaboration.

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.

Te Nehenehenui (previously Maniapoto Māori Trust board) and NIWA are working collaboratively to support Ngāti Maniapoto whānau to reconnect with and participate in the assessment of their freshwater according to their values.

A summary of the main scientific publications, conference presentations and popular science publications.

Eutrophication occurs when nutrients in streams, rivers, lakes and estuaries cause excessive growth of aquatic plants and algae (primary producers).

These are some recent publications related to the freshwater species ecology and management programme.

NIWA is helping to ensure that New Zealand’s unique and iconic freshwater species are healthy, abundant and thriving.

Constructed wetlands are a water quality restoration tool that can reduce levels of sediment, nutrients and microbes such as E. coli.

For more than 20 years NIWA scientists have been nurturing three plants that are the only examples of their kind in existence.

The Whatawhata Integrated Catchment Management (ICM) Project is the longest continuously monitored before-after-control-impact (BACI) catchment-scale study in New Zealand.

Scientists know so little about how storms affect the delicate balance of lake ecosystems that we may be unable to protect them from the effects of climate change, says a NIWA scientist.