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 new programme at NIWA will focus on finding ways to protect our freshwater species now and in the future.
NIWA has updated its guide to freshwater pests for the first time since 2013.
In this edition we welcome Dr Simon Woodward to the team and find out how he came to work at NIWA.
A project to explore whether kākahi (native freshwater mussels) can be used to help clean up New Zealand lakes has taken a step forward, with the launch of bioremediation rafts in Lake Ohinewai in the Waikato.
The Lake Restoration Handbook: A New Zealand Perspective addresses this need through a series of chapters that draw on recent advances in modelling and monitoring tools, citizen science and First Peoples’ roles, catchment and lake-focused restoration techniques, and policy implementation.
The plight of some coastal lakes in Canterbury is well-known. Many were once abundant mahinga kai site for local Māori, some are now the most polluted waterbodies in the country.
A NIWA research programme—Control of Invasive Fish—is working with Bay of Plenty Regional Council this year to create novel tools to support the catfish control programme.
The diatom (Lindavia intermedia) that causes lake snow—nuisance slime in clean-water lakes that ruins angling and can block water intakes—was apparently introduced to New Zealand shortly before 2002, but was widespread by 2005.