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.
cheers
Ian
---
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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