Jerra 'scunge'

Subject: Jerra 'scunge'
From: Ian Fraser <>
Date: Thu, 02 Feb 2006 08:09:49 +1100
No, whatever the growth is on Kellys, it is NOT blue-green 'algae', which are actually cyanobacteria. The current 'scunge' (how I wish you hadn't said that, GB!) seems to be a macrophyte - ie a larger plant - and without having looked at it closely I'd guess it was Azolla (A. filiculoides or pinnata). These are native floating ferns which are also often red, and commonly seen on still water bodies. They seem to proliferate when nutrient levels rise; perhaps the presence of the cattle is contributing to that.

It is not a health hazard or even an indication of an unhealthy water body. My guess is that it's probably good duck tucker, but I haven't got time to look that up at the moment.

I'm sure there will be more useful and informed comments coming, but meantime hopefully this is of some use, especially to Tom and Sue for Sunday.



Ian Fraser,  
Environment Tours; Vertego Environmental Wordsmithing
GPO Box 3268, Canberra, ACT 2601
ph: 61 2 6249 1560  fax: 61 2 6247 3227

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