Freshwater quality

What are the potential sources of sediments from land use activities?

Kōaro are excellent climbers and like clear, swiftly flowing, forested streams.

There are two species of kōura or freshwater crayfish in Aotearoa.

How may agricultural activities increase sediments in waterways?

Piharau/kanakana are an important mahinga kai species and a prized delicacy for many Māori.

How may forestry activities increase sediments in waterways?

References, further reading, and links to useful websites.

How can mining activities influence sediments in waterways?

Has a receding lower jaw and black spots behind the head.

How does urbanisation increase sediments in waterways?

Blooms of hazardous cyanobacteria (blue-green algae) in rivers, lakes and reservoirs can cause problems for both animal and human health.