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

 


Testing Confirms Disappearance Of Blue-Green Algae

MEDIA RELEASE


January 11 2013

Testing Confirms Disappearance Of Blue-Green Algae

A potentially toxic blue-green algae which emerged in some Otago waterways in December has dissipated.

The Otago Regional Council (ORC) had issued warnings to the public to keep their distance from Lake Waihola, the Tomahawk lagoon, and the Taieri River at Henley because of the presence of the algae.

When present, the blue-green algae can produce toxins which can cause illness, irritation of the skin, eyes, nose, and mouth in people.

ORC manager resource science Matt Hickey said water sampling at the three locations this week confirmed that the blue-green algae had dissipated, reducing the potential risk to people and animals of illness through contact with the algae.

Mr Hickey said that while this was good news for people frequenting Lake Waihola, the Tomahawk lagoon, and the Taieri River at Henley, they still needed to be alert to the possible presence of another kind of potentially toxic algae known as Phormidium.

Unlike the blue green algae which has caused problems in Lake Waihola and Tomahawk lagoon. Phormidium is found in rivers and streams, and typically forms a thick brown-black slimy algae mat found on large rocks, stones, and cobbles.

If the mats detach, they may float downstream to become caught up in other debris such as sticks. When the Phormidium mats die and dry out, they become light brown or white. Either fresh or dried, the algae can be highly toxic and potentially harm animals and people.

Dogs are particularly susceptible to poisoning from both mat-forming and free-floating toxic algae.

“Many dogs enjoy being in the water and can eat these algae intentionally or by accident, which can have tragic results,” Mr Hickey said.

Symptoms of poisoning in animals exposed to the type of toxins present in Phormidium include lethargy, muscle tremors, fast breathing, twitching, paralysis, and convulsions. In extreme cases, death can occur within 30 minutes after signs first appear.

Where humans become ill or are suspected of being ill after swallowing water containing algal bloom, medical advice should be sought immediately. Likewise, if animals become sick, a veterinarian should be contacted.


ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Gordon Campbell: On The Legal Fudging Of The GCSB Revelations

As many have noted, the Hager/Snowden revelations of the spying by our security agencies on our Pacific neighbours and allies is a virtual re-run of the pre-election debate.

Unfortunately, it is also a forerunner of the kind of “ debate” we can expect during the upcoming review of the security agency powers, in June. It is a situation where the government (a) stonewalls, (b) baldly asserts that mass surveillance is not occurring despite the Snowden evidence that it is, and (c) claims that the GCSB actions were lawful.

Yet as Greens Co-Leader Russel Norman says, this can be true only if the legislation passed last year by the Key government has made the mass surveillance of New Zealanders – and the related handing over of their private data to the NSA – lawful. More>>

Latest:

 

PARLIAMENT TODAY:

Women's Day, March 8: It’s Time For Men To Step Up For Gender Equality

UN Women is launching the HeForShe campaign in New Zealand at the International Women's Day Parliamentary Breakfast, and is calling on New Zealand men — including politicians and community and sports leaders — to show their commitment to gender equality by signing up to this global campaign. More>>

ALSO:

Teina Pora Wins Appeal: Gordon Campbell On The Privy Council Decision

The quashing of the convictions of Teina Pora for the rape and murder of Susan Burdett in 1992 has shone a spotlight once again on a major gap in the New Zealand justice system... More>>

ALSO:

Urgent Bill Planned: MP Pay Rises To Match Public Service

Prime Minister John Key today announced an overhaul of the Remuneration Authority Act, tying MP salaries to those of the wider public sector, which will be passed under urgency. More>>

ALSO:

PM's Press Conference: MP Pay Rises, Solid Energy, Iraq

Prime Minister John Key answered questions in his Post-Cabinet press conference about the Iraq deployment, Solid Energy and National’s decision to overhaul the Remuneration Authority Act. More>>

ALSO:

Worksafe: MSD Charged Over Work And Income Ashburton Shooting

WorkSafe NZ has laid one charge against the Ministry of Social Development (MSD) in relation to the shooting at the MSD Ashburton office on 1 September 2014 in which two Work and Income staff were killed and another was injured. More>>

ALSO:

Iraq: Ex-Hostage Says Government Not Putting NZers, Iraqis First

Harmeet Singh Sooden is travelling to Iraq in the coming weeks to work with Christian Peacemaker Teams (CPT) on a short-term assignment. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news