-
Common hydrological terms
Education ResourceDescriptions of the common terms that explain the processes that occur in hydrology. -
Tuna - tuna heke (downstream migrants)
Once eels become migrants (also known as tuna heke or tuna whakaheke) they stop feeding, and progressively develop the external features that clearly distinguish them from 'feeders'. -
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?
