Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Potentially toxic algae found in the upper Tomahawk lagoon

March 27, 2014

Potentially toxic algae found in the upper Tomahawk lagoon

The latest weekly samples from Tomahawk Lagoon have shown high levels of the potentially toxic cyanobacteria (blue-green algae) in the upper lagoon.

The cyanobacteria can produce toxins which may cause illness, such as skin reactions, in people and animals.

Otago Regional Council director of engineering, hazards, and science Gavin Palmer said algae had been present throughout the summer, mostly at low levels. It was not possible to predict how long it would take to recede again.

“We are urging parents to keep their children out of the water and dog owners to do the same with their pets,” Dr Palmer said.

The presence of extensive algal blooms or cyanobacteria is linked to many factors, including high nutrient concentrations in the water and lake bed. Nutrients in the lake bed are released when strong winds stir up the sediment.

Dr Palmer said warning signs the council put up at the outlet of the lower lagoon had remained in place since the algae was recorded at high levels there in February.

Additional warning signs were now being installed adjacent to the upper lagoon. All warning signs would remain in place until monitoring showed the algal bloom had reduced and weekly samples were consistently below levels posing any threat to health.

Dr Palmer said ORC staff would continue to monitor the situation and update the public with developments.

Dr Palmer and ORC scientists have met Tomahawk community representatives to discuss the issue. A background paper will be prepared for the council’s consideration and following this, a public meeting will be organised to brief the community.

In the meantime, anyone wishing to join an ORC email list and receive the sampling weekly results should phone ORC customer services on 474 0827.

ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

 

Gordon Campbell: On Bank Scandals (And Air Crashes)

Last month, the Australian Securities and Investment Commission (ASIC) filed proceedings against Westpac over activities that have some distinct echoes of the Libor scandal. More>>

Budget: Health Funding Must Keep Up With Need

NZNO: “The nursing team has been doing more with less for years. It’s getting to the point that we’re really worried about our colleagues, our patients, our jobs and the level of health care available for people in our country." More>>

ALSO:

Emissions Inventory: Time For The Government To Do The Right Thing

It’s time for the National Government to step up and do the right thing to reduce climate pollution as data shows New Zealand’s greenhouse gas emissions are higher than ever, the Green Party said today. More>>

ALSO:

Budget 2016: More Partnership Schools To Open

Seven new schools will join the eight Partnership Schools already open, along with further new schools opening in 2017. “The growth of this policy is a reflection of the high level of interest from educators and community leaders,” Mr Seymour says. More>>

ALSO:

No Correspondence With English: Did Brownlee Make Up Sale Of Navy Ships ‘On The Hoof?’

Having revealed that several Royal New Zealand Navy vessels have not left port in years, New Zealand First is now asking the Minister of Defence to prove he did not come up with the idea of selling HMNZS Taupo and Pukaki until the media asked him. More>>

Housing Plans: Labour- Abolish Auckland Urban Boundary
The Government should rule out any possibility of an urban growth boundary in Auckland Council’s Unitary Plan if it is serious about fixing the housing crisis. More>>
Greens - State House Solution
The Homes Not Cars policy allows Housing New Zealand to retain its dividend and, in addition, would refund its tax, to spend on the emergency building of around 450 new state houses. More>>

ALSO:

Houses And Taxes: Post-Cabinet, Pre-Budget Press Conference

The Prime Minister said that the pre-budget announcements showed that his Government is “investing in a growing economy”. He re-affirmed the National Government’s commitment to lowering personal tax rates but that any such change must fit with the fiscal reality of the time. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news