Rivers
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Eutrophication refers to increasing levels of plant nutrients in a water body, and increasing risks that algae and aquatic plants will growth to nuisance levels and degrade water quality.
A helping hand for lamprey at instream obstacles
At night, in the NIWA lab in Hamilton, lamprey have been climbing structures to help scientists understand how they can navigate waterways.
New freshwater species programme
A new programme at NIWA will focus on finding ways to protect our freshwater species now and in the future.
Updated freshwater pests guide out now
Staff profile: Dr Simon Woodward
From land to sea – tracing our trash
NIWA and the Sustainable Coastlines charitable organisation are collaborating to develop ‘source-to-sea’ methods to trace the movement of litter from stormwater systems, through rivers, to coastlines.
Lagarosiphon be gone
An underwater invader recently brought key agencies and organisations including Land Information New Zealand, NIWA, Otago Regional Council, Boffa Miskell, Department of Conservation, Ministry for Primary Industries, Fish and Game and Lake Guardians, together in Wanaka.
The New Zealand Water Model (NZWaM) – a new water modelling approach
Models have an important role to play in water management in New Zealand. To be useful, models need to be both flexible and complex; flexible because they are needed for a wide range of purposes, and complex because they need to simulate complex natural and man-made systems
Scientists make break-through in saving freshwater mussels
Doctoral student, Michele Melchior, has made an important breakthrough in the effort to save New Zealand's freshwater mussels, or kākahi.
Kākahi were once a valuable food source for Māori, and they also play a crucial role as indicators of the health of waterways. All three kakahi species in New Zealand are in decline.
Glass eel ear bones could reveal migration patterns
The ear bones of tiny eels might hold clues to their largely secret life.
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Coastal and Estuarine Physical Processes Scientist