MAF Biosecurity has been working with Central North Island partners including the Department of Conservation, Fish & Game New Zealand, Genesis Energy, Tuwharetoa Maori Trust Board, and the New Zealand Recreational Canoeing Association (NZRCA).
The sampling programme is continuing in an effort to identify the source of the dead didymo cells or to confirm whether an incursion has taken place.
As an additional precaution the response team requested Tuwharetoa to close the roads it owns that provide access to the upper Tongariro River, including the following roads:
Rangipo Dam Road
Tree Trunk Gorge Road
Kaimanawa Road (Access 10).
NZRCA appreciates the cooperation of all kayakers and recommends staying away from all Central Plateau rivers, until more is known.