Didymo Monitoring detects 5 Rivers

1 September 2006

Biosecurity New Zealand's latest 100 high-risk site didymo monitoring survey has been completed with five new detections – all of them in previously affected catchments or in rivers close by.

The detections made were in the Clutha River downstream of the Lake Roxburgh dam, which followed a find at Beaumont shortly before the survey. While these are the first finds below the Roxburgh Dam, they were not unexpected, given that the Clutha was already known to contain didymo.

Didymo was also detected in the Omarama Stream, near the Omarama township, close to the previously detected Ahuriri River, and at Hamilton Burn, just north of the previously detected Aparima River. The Eglinton River in the Te Anau catchment was also found to contain didymo. All these rivers are in catchments where didymo has previously been detected.

Didymo was also found in the Mataura River at Black Bridge, near Athol on State Highway 6, and in the Matukituki River at West Wanaka (West Wanaka-Mt Aspiring catchment). These two finds are in new catchments, but close to where didymo has previously been detected.

This year the Government has budgeted $7.5 million for managing Didymo.

Media contact: Phil Barclay, Senior Communication Adviser Biosecurity New Zealand 029 894 0432

To report a suspected exotic pest or disease, call the Emergency Hotline on 0800 80 99 66.



Last Updated: 24 September 2010

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