Freshwater

Assessing depth specific distribution and relative abundance of gold clam and kākahi at Lakes Maraetai and Karaapiro.

Filter traps are being used to study the invasive gold clam in the Waikato River.

No detectable human-induced environmental change to the pristine Lake Vanda following the decommission of the research station.

The invasive gold clam (Corbicula fluminea) can reach very high population densities, which can harm freshwater ecosystems.

A team of NIWA freshwater ecologists have completed their research on the use of biodegradable plant mats as life rafts to help reintroduce native aquatic plants to degraded freshwater lakes.

NIWA scientists have launched a groundbreaking initiative that is transforming mapping of freshwater environments.

Could bubbles and strobe lights stop pest fish swimming where they’re not wanted?

Learn more about gold clam life cycle

NIWA scientists are gathering data on freshwater mitigation across NZ to improve predictive models.

The invasive gold clam is native to eastern Asia and is widely established in North and South America and Europe. In New Zealand it was first discovered in the Waikato River in May 2023 at Bob's Landing, within Lake Karāpiro. It has been declared an unwanted organism under the Biosecurity Act.

NIWA and partners launch critical research to stop an invasive clam threatening New Zealand's freshwater ecosystem.

A tool to support decision-making on the suitability of RotoTurf for your waterbody