Freshwater

Nearly half of New Zealand’s river network is partially or fully inaccessible to migratory fish, a new study shows.

Freshwater Cultural Keystone (Taonga) Species such as tuna, kōura and kāeo/kākahi are central to the identity and wellbeing of many Māori communities throughout Āotearoa. For generations, these species have sustained communities and been vital in the transfer of customary practices and knowledge from one generation to the next.

As the concerns over water resources and the environment increase, the importance of combined water management, which acknowledges the integrated nature of groundwater and surface water, and manages them as a single resource, is critical to sustain both human society and aquatic and terrestrial ecosystems.

Biological traits analysis is a valuable tool for measuring ecosystem function

Downloadable and printable guides on identification of common freshwater invertebrates found in New Zealand waterways and lakes.

NIWA’s Stream Health Monitoring Assessment Kit (SHMAK) gives land owners, iwi, school and community groups simple, scientifically-sound tools and resources to monitor the ecological health of New Zealand’s streams.

Nearly half of New Zealand’s river network is partially or fully inaccessible to migratory fish, a new study shows.

A study investigating the level of change needed to improve the state of Hawke’s Bay’s marine environment highlights the magnitude and frequency of interventions required for the seafloor ecosystem to recover.

NIWA is active in a broad range of eDNA topics and can provide expert advice on applications and expected outcomes.

Can native freshwater algae help restore the mauri of local waterways? Lawrence Gullery investigates.

A group of international scientists are visiting some of New Zealand’s most significant coastal wetlands as part of a five-year research project to help the country adapt and prepare for sea-level rise.

Aotearoa-New Zealand’s marine area covers 167,650 square kilometres presenting a staggering distribution of climates, from subtropical to subantarctic waters, to understand and manage.