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Roto Turf: Aquatic plant ‘life rafts’ in degraded lakes
Research ProjectA team of NIWA freshwater ecologists are researching the use of biodegradable plant mats to help reintroduce native aquatic plants to degraded freshwater lakes in Aotearoa-New Zealand. -
The Bio-Acoustic Fish Fence
Research ProjectInvestigating the effectiveness of an acoustic bubble-screen in minimising the movement of pest fish -
Ngaa taonga tuku iho o ngaa roto o Tahaaroa
Research ProjectDeveloping the monitoring and evaluation approaches that respond to the hauanga kai aspirations of Ngaati Mahuta -
Wetland wonders: cleaning up our freshwater
Media release11 June 2024Constructed wetlands a natural solution to reduce agricultural pollution. -
NIWA’s freshwater ecologists helping regional councils remove the barriers to fish migration
News article21 June 2023About 76 per cent of indigenous freshwater fish species, that’s 39 out of 54, are threatened with extinction or at risk of becoming threatened. -
Putting algae to work
Feature story15 December 2022Can native freshwater algae help restore the mauri of local waterways? Lawrence Gullery investigates. -
Protecting our taonga together
Feature story04 August 2021Alex Fear looks at the Cultural Keystones Species research programme, a research partnership that grew out of the vision of a Ngāti Hau kaumatua. -
Freshwater species ecology and management
NIWA is helping to ensure that New Zealand’s unique and iconic freshwater species are healthy, abundant and thriving. -
Mitigation systems
Developing techniques for protecting, enhancing and rehabilitating the biodiversity of freshwater ecosystems and the cultural value they provide. -
Stream restoration for aquatic invertebrates
Research ProjectStreams play a key role in the ecosystems of New Zealand’s unique landscape. They feed and link together freshwater sources, maintain good water quality and support habitats that sustain our biodiversity. -
Reintroducing giant kōkopu to Nukumea Stream
Research ProjectThe giant kōkopu is a native whitebait species considered rare and vulnerable. NIWA is working with Mahurangi Technical Institute and environmental consultancy Boffa Miskell to test the feasibility of reintroducing giant kōkopu to Nukumea Stream, north of Auckland. -
Restoring Kōaro in the Rotorua lakes
Research ProjectThe kōaro was once abundant in the Te Arawa lakes near Rotorua in New Zealand’s North Island. NIWA has assessed the viability of restoring this species in the region.