At 5:37 PM -0800 22/2/01, John Gamblin wrote:
With the world's water levels know to be climbing and
with many estimates as to how much? a thought may be
spared for the concept of floating roosts anchored to
the sea floor with adequate length chains and weights
that are adjustable?
Hello everyone,
John's suggestion of floating wader roosts is valid and praiseworthy
on first consideration. Indeed it might be the best way to rehouse
waders at some locations.
We considered this when looking for the best solution for artificial
wader roosts in the Pumicestone Passage, SEQld. We also considered
enhancing sandbanks in the safer, central areas of the passage, where
waders might be left more in peace, than in land-based locations.
We regretfully rejected these options for a variety of reasons:
1 Disturbing the Passage floor would inevitably cause the death
of benthic fauna, and disturb the seal.
2 Enhancing (raising the level of) a sandbank would change
hydrological patterns, which could have an unfavourable flow-on
effect to other marine life. It would also possibly revert eventually
to the former level unless fortified.
3 Any elevated area in the middle of the Passage would be a
magnet for fishermen..
4 QPWS would probably never allow such a structure in the
Marine Park anyway.
5 Cost. It would need to be a sturdy enough structure, which
would remain immobile during cyclonic events, and which would not
drag along the Passage floor.
We thought it was a good idea at first. At least, I did when it first
occured to me. But my colleagues were quick to point out its flaws.
Regards,
Jill
--
Jill Dening
Sunshine Coast, Qld
26º 51' 152º 56'
Ph (07) 5494 0994
Birding-Aus is on the Web at
www.shc.melb.catholic.edu.au/home/birding/index.html
To unsubscribe from this mailing list, send the message
"unsubscribe birding-aus" (no quotes, no Subject line)
to
|
