Work to control New Zealand’s worst invasive weed is set to begin at Lake Karāpiro next week.
The work to manage hornwort is part of Toitū Te Whenua Land Information New Zealand’s (LINZ) annual biosecurity programme.
LINZ Biosecurity Manager Tracey Burton says a boat and a helicopter will be used to spray weed near boat ramps, ski lanes and popular swimming spots.
“Lake Karāpiro holds significant value for both the rowing community and locals,” says Burton.
“Our priority for this work is to maintain the recreational values of the lake. Hornwort forms dense floating mats that can take over lakes, choke waterways, smother all other aquatic plants and impact how we use our lakes, so it’s important we do our best to keep it in check and try prevent it from moving to other areas.”
The boat-based spraying will take two days to complete and is due to begin on Tuesday. The helicopter spraying will also take two days and will begin in late March. Both control methods are weather-dependent.
Burton says lake users can also play a part in helping stop the spread of aquatic weeds and pests by checking, cleaning and drying all water gear and craft.
“With the introduction of the highly invasive gold clam to Lake Karāpiro, it’s more important than ever that we undertake these inspections. It would be devastating to see these clams make their way to other waterways, like the Rotorua Lakes.
“We all need to do our part in preventing the spread of invasive pests to new areas.”
The control work at Lake Karāpiro will be carried out by LINZ biosecurity delivery partners Boffa Miskell Limited.
The work is funded by LINZ, Waipā District Council and Mercury.
Media contact
Email: media@linz.govt.nz