Clams, Seaweed And Turtles Included As Part Of Refreshed Regional Pest Management Plan
Following a partial review of the 10-year plan by Bay of Plenty Regional Council and community feedback, the plan has been updated to include new pests, broaden the scope of action for existing pests already in the plan, and introduce new or refresh existing rules.
Regional Council biosecurity manager Greg Corbett says that having a fit-for-purpose pest management plan enables the Regional Council to react quickly and appropriately when new biosecurity threats appear.
'For example, corbicula – an invasive freshwater clam – was first detected in New Zealand in the Waikato River in May 2023.
'Given the proximity of this discovery to the Rotorua Te Arawa lakes, having the right rules and resources in place now puts us in the best possible position to help reduce the risk of its spread into the region.'
Mr Corbett says the approach is similar for marine environments, where exotic caulerpa was first discovered in New Zealand in 2021.
'This highly invasive seaweed now covers more than 1,500 hectares of the seabed in the upper North Island and impacts recreational, cultural and commercial activities.
'Including exotic caulerpa in the Regional Pest Management Plan and adapting our marine biosecurity rules is the first step to enable Regional Council to act and minimise the risk of it entering the region.'
Another new addition into the Regional Pest Management Plan is introduced turtles (such as the red-eared slider).
As the climate changes and numbers are predicted to increase, Mr Corbett says this is a necessary step to minimise the risk to local ecosystems.
'With a warming climate in the region and the geothermal soils around Rotorua Te Arawa lakes, turtles are increasingly likely to survive and successfully breed out of captivity. The amended plan allows certain conditions to be imposed to prevent their establishment in the wild.'
Other changes in the Regional Pest Management Plan include treating certain species of conifers as pests, regardless of whether they were deliberately planted or not. The amendments prohibit new plantings of these species, to ensure that the region's biodiversity is protected from the potential impact of pines growing in the wild.
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