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Algae ID guides
A collection of ID guides to algae. Groups include major freshwater algal groups, diatoms and blue-green (cyanobacteria), red and green algae. -
SHMAK water quality – visual clarity
There are two methods to determine visual clarity in SHMAK; the clarity tube (or SHMAK tube) and the black disc method. -
Modified habitat
A habitat is an environment or place where animals normally live. -
Inanga
Inanga are the predominant species in the modern whitebait fishery. -
Causes of sedimentation
What are the potential sources of sediments from land use activities? -
The impact of El Niño and La Niña on New Zealand's climate
El Niño accounts for less than 25 percent of the year-to year variance in seasonal rainfall and temperature at most locations in New Zealand, however its effects can be significant. -
Water abstraction and agriculture
How do agricultural activities potentially influence water flows? -
Mitigation and best practice options
Some simple steps to minimise the effects of aquaculture activities on water quality and mahinga kai. -
Nutrient overloading
Nutrients in waterways are essential for the growth of algae and aquatic plants but too much can destroy an ecosystem. -
Kākahi
The kākahi or freshwater mussel was a valuable mahinga kai resource for many Māori. -
What ails our estuaries - problems and solutions
Estuaries are at the bottom of the freshwater drainage network and, effectively, are a part of it. This means that every time we act to protect and enhance streams and rivers we are also benefiting the estuary at the downstream end.