Surveillance is published as the Ministry for Primary Industries’ authoritative source
of information on the ongoing biosecurity surveillance activity and the health status of
New Zealand’s animal and plant populations in both terrestrial and aquatic environments.
It reports information of interest both locally and internationally and complements
New Zealand’s international reporting.

This report identifies the costs of fencing and riparian planting in the context of excluding
stock from waterways across New Zealand, so that it limits the quantity of nutrients and
pathogens entering a flowing waterway. It is part of a larger project assessing the value of
enhancing freshwater quality and identifying potential policies for stock exclusion alongside the National Policy Statement for Freshwater Management (NPS-FM).

Surveillance is published as the Ministry for Primary Industries’ authoritative source of information on the ongoing biosecurity surveillance activity and the health status of
New Zealand’s animal and plant populations in both terrestrial and aquatic environments.
It reports information of interest both locally and internationally and complements
New Zealand’s international reporting.