Stopping the spread of the freshwater gold clam (Corbicula fluminea) is of critical importance for preserving native biodiversity, protecting infrastructure, and maintaining the cultural and ...

The NIWA Biodiversity Memoir (NBM) series comprises technical works that describe New Zealand’s invertebrate marine life—sponges, corals, hydroids, worms, molluscs, crustaceans, sea stars and ...

The Joint Graduate School in Coastal and Marine Science, co-managed by NIWA and the University of Auckland, is equipping and energising young scientists from New Zealand and around the world for ...

NIWA, through its Māori Environmental Research team Te Kūwaha, is working in collaborative partnerships with Māori businesses, and whānau, hapū and iwi throughout Aotearoa, combining their skills in ...

Heavy rainfall is one of the most frequent and widespread severe weather hazards to affect New Zealand. It is defined as rainfall greater than 100 mm in 24 hours. In New Zealand, heavy rainfall is ...

The newly described Australasian Narrow-nosed Spookfish, Harriotta avia. The Australasian Narrow-nosed Spookfish was described by NIWA Fisheries Scientist Dr Brit Finucci. It was previously thought to ...

A risk screening tool that identifies areas of potential exposure to shallow groundwater. Sea-level rise due to climate change is driving increases in groundwater levels in some coastal areas. Before ...

A new NIWA-led study has found that climate change increased the amount of total rainfall during Cyclone Gabrielle by 10%. This additional rain fell during the most intense parts of the storm, ...

The 3-panel Soil Moisture Deficit (SMD) map shows the historical soil moisture deficit at the date shown (left), the soil moisture deficit at the same time last year (middle) and the current soil ...

Leaving from Wellington, the RV Tangaroa spent approximately 39 days at sea, including 30 within the Antarctic Treaty area (south of 60°S). The main survey area was the Western Ross Sea from Iselin ...

Impacts of timber processing activities on water quality and mahinga kai. The production, use, and recycling of paper has a number of adverse effects on the environment which are known collectively as ...

The Standardised Precipitation Index (SPI) is a simple measure of drought (and also of very wet conditions) and is based solely on the accumulated precipitation for a given time period (e.g. over the ...