Geoffrey
Hah! The population that was there around 200 years ago was supposed
to have been based on trasnslocated fish. Technically, I suppose
that the Lake George Murray Cod were indigenous feral fish. From
what I understand that the Lake George fishing boats were
steam-powered.
I believe that the introduced Redfin Perch have the capacity to
continue to survive in the feeder streams when Lake George is dry*.
Stories of the prodigious Redfin Perch populations in Lake George,
when full, abound.
regards
Con
*I don't believe this explanation of why Lake George appears to
self-stock Redfin Perch. it is obvious that New Guineans send Redfin
Perch down the tunnel every time they fill the lake.
On 8/03/2012 1:42 PM, Geoffrey Dabb wrote:
The curse of a memory. I recall reading this amusing
response when I was at school in the mid-50s …
I am sorry to see that the scientifically correct
explanation, as explained to us (then) ACT newbies in the
early eighties - the tunnel to New Guinea - has been lost in
the mists of time.
The incorrect theories are limited in their explanatory power
because they are based on a single discipline. The correct
theory is multi-disciplinary, combining knowledge about
geology, hydrology and history. On distance alone, it would
have been logical to expect Lake George to have formed in
South-eastern Northern Territory if Sumatra were the recharge
area. While, if New Zealand were the recharge area, Bateman's
Bay would have been the correct location for Lake George. I
understand that the primary reason the Queensland Colonial
Government Annexed New Guinea was to protect Lake George on
behalf of the Colony of New South Wales. OTOH, had Sumatra or
New Zealand been the recharge areas, the British Empire would
have had to either invade the Netherlands East Indies or allow
the Colony of New South Wales to annexe New Zealand.
BTW, I believe that, around the turn of the century before the
last turn of the century, there may actually have been a
Murray Cod fishery based on Lake George.
Con
On 8/03/2012 11:25 AM, Sue-Ellen and Ray wrote:
Thank you all for the inputs I have now got
three options to solve the mysteries of lake
George and its water levels (linkages to
Central Australia ,New Zealand and Sumatra)
plus one that had a strong element of
scientific fact and logic to support it. See
below for the one that I like the best.
Sent: Thursday, March 08, 2012
9:45 AM
Subject: RE: [canberrabirds]
Lake George
Nah, you’re both wrong. It has a channel
through to Lake Toba on Sumatra, one of
the biggest volcanic craters in the world.
Margaret.
Actually the link is to Lake Taupo in NZ
via a tunnel under the Tasman - it's
well-established that when one is full,
the other is empty.
On the other hand there are those tedious
souls who insist that it's just down to a
small local catchment area, plus a large
evaporation area and shallow basin.
Boring....
cheers anyway
Ian
On 7/03/2012 22:08, Sue-Ellen and Ray
wrote:
Hi All – Lake George is a mystery
to me with some suggestions there is
a “drainage link” from it to central
Australia – who knows!!!! I will be
in Canberra over the next week so
would be interested ( but I have no
local knowledge) in joining a
birding group to do some exploring
in the area.
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