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Nutrient overloading
Nutrients in waterways are essential for the growth of algae and aquatic plants but too much can destroy an ecosystem. -
Kōura
There are two species of kōura or freshwater crayfish in Aotearoa. -
Water temperature and hydro
How do hydro-electricity activities potentially influence waterway temperatures? -
What ails our estuaries - problems and solutions
Estuaries are at the bottom of the freshwater drainage network and, effectively, are a part of it. -
Mitigation and best practice options
Here are some simple steps to minimise the effects of dairying on water quality and mahinga kai. -
Climate change, global warming and greenhouse gases
Climate data and common terms explaining the causes and effects of climate change. -
Tuna - spawning grounds
All species of freshwater tuna spawn at sea, although the spawning grounds of only four species are known with certainty worldwide. -
Horticultural activities
Land is tilled, sowed, and harvested for horticultural crops to grow. -
Chemical contamination and wood processing
What are the sources of chemical contamination from wood processing? -
Tuna - elvers and recruitment
Once in freshwater, glass eels develop into darker pigmented juvenile eels known as elvers.
