Weed whack­ing is work­ing

Central Otago Mirror - - NEWS - By CHE BAKER

A $320,000 clean up of nox­ious week chok­ing Lake Wanaka wa­ter­ways is prov­ing to be ef­fec­tive. A con­trol pro­gramme be­ing is car­ried out by a la­garosiphon man­age­ment com­mit­tee, led by Land In­for­ma­tion New Zealand, to re­move the weed. The weed chokes wa­ter­ways, smoth­ers na­tive aquatic plant com­mu­ni­ties and es­tab­lishes it­self quickly if left un­treated. Land In­for­ma­tion Min­is­ter Mau­rice Wil­liamson said the con­trol work has been ‘‘so ef­fec­tive’’ that there’s now im­proved ac­cess to many parts of the lake – such as Pad­dock Bay and Bish­ops Bay, which were pre­vi­ously re­stricted by dense weed beds. The man­age­ment com­mit­tee have rec­om­mended the con­tain­ment line be moved fur­ther south to ex­tend from the south­ern tip of The Penin­sula to the very south­ern end of Bish­ops Bay. ‘‘Mov­ing the con­tain­ment line south means la­garosiphon is be­ing ef­fec­tively con­trolled in a large part of Lake Wanaka and weed con­trol ef­forts can be di­rected to ar­eas more heav­ily used for recre­ation closer to Wanaka Town­ship,’’ Mr Wil­liamson said. LINZ Crown Prop­erty Man­age­ment act­ing man­ager John Hook said it will be spend­ing $300,000 on con­trol works, with a con­tri­bu­tion of $20,000 from Queen­stown Lakes Dis­trict Coun­cil. ‘‘As la­garosiphon in­fes­ta­tions are re­duced the avail­able bud­get is re­al­lo­cated to other pri­or­ity ar­eas, now par­tic­u­larly in the south­ern part of the lake,’’ Mr Hook said.

Wa­ter weeded: A $320,000 con­trol pro­gramme to re­move the pest weed la­garosiphon from Lake Wanaka is prov­ing to be ef­fec­tive.

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