This document provides a methodology to split the national deer herd between the enterprises of venison and velvet antler production to provide a mechanism to develop appropriate Emissions Intensity Values (EiV) to be applied to venison and velvet antler as two separate products.

The main outcome of this project is an agreed auditable system that can be used to account for methane reductions from livestock breeding at the individual animal, farm and national level. This can be used for farm auditing and accounting by individual farmers and for national auditing and accounting by the New Zealand government.

Comprehensive monitoring of the flow and water quality at inflows and outflows was undertaken from 2021-2024 at three pre-existing and three new Constructed Wetlands (CWs) in contrasting landscape settings. Sites exhibited considerable variation in inflows and loads of nutrients and sediment during and between years. These data were collected in fine time scales and they add significantly to the performance information supporting the use of CW’s in New Zealand. The sites continue as a ‘demonstration network’, showing how constructed wetlands can improve attenuation of diffuse runoff in pastoral landscapes.