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Controlling water weeds with grass carp
Research ProjectA Ministry for Primary Industries-funded study has shown that grass carp, in enclosures, can be used as an effective means of controlling invasive plant species in our waterways. -
Freshwater pest species
This is a user guide on non-native fish, reptile, invertebrate, algal and plant species that are recorded in New Zealand freshwaters. -
Fish risk assessment model
FRAM is powerful and simple to use - series of straight-forward questions about the biology and behaviour of any alien species lead to it being ranked and categorised as a high, intermediate, or low ecological risk. -
Float your boat! Scientists use hi-tech miniature Q-boat to measure river flows
News article18 June 2012 -
Robot spies make new science discoveries in Fiordland’s World Heritage Park
News article10 April 2012 -
Waikato River Independent Scoping Study (WRISS)
Research ProjectNIWA is involved in research and consultation' aimed at improving the health of our freshwater systems. -
Flyathalon - NIWA gives aquatic insects an obstacle course
News article23 March 2012 -
Restoring fish food
Small native fish eat a range of benthic invertebrates in streams. The larvae of mayflies and caddisflies are the most important food species, with chironomids being important for juvenile fish and in streams where all other prey are scarce.
