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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.