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feral cats and immigration (The Age)

To: "Frank O'Connor" <>
Subject: feral cats and immigration (The Age)
From: "Jeremy O'Wheel" <>
Date: Tue, 8 Jan 2013 20:44:00 +1100
Ah sorry, rather than being "deliberately misleading" that was just my
error in skim reading the report, apologies.  I believe the report as a
whole supports what I said earlier, but I'm not going to re-read the whole
thing.

Jeremy


On Tue, Jan 8, 2013 at 8:39 PM, Frank O'Connor <>wrote:

>
> I  confess that I have not fully read and considered every response to
> this topic.  But the extract below from "Jeremy O'Wheel" <
> >  seems to have a gaping hole to me.
>
> It states that "...
>
> feral cats are not recorded to have
> impacted on any species of reptiles, amphibians, fish or
> invertebrates".  Is my understanding of natural history wrong,
> or does this not include mammals and birds which I think are
> "vertebrates", and I am sure that there must be plenty of
> studies to show the impact of feral cats on them???  Was the
> "executive study" quoted by Jeremy deliberately misleading?
>
>
> I would be very surprised if there are no studies to show the impact on
> reptiles.  In WA, there have been serious cat baiting trials in the Gibson
> Desert and at Lorna Glen Station NE of Wiluna conducted by DEC.  The
> primary aim of these trials was their effect on mammals, but I would be
> amazed if there were no conclusions also about reptiles.
>
> When I worked at the Argyle Diamond Mine in the Kimberley of WA, it was
> obvious when there was a feral cat around the offices.  All the "ta ta
> lizards" (Gilbert's Dragons) disappeared or else you saw the cat pass by
> with one hanging out of its mouth.  Once the cat was eliminated the dragons
> would eventually return.  Surely there are studies to this effect?  This at
> least shows local decline / extinction.
>
> ----------------------------------------
>
> This document, for example, tries to summarise the science:
>
> http://secure.environment.gov.au/biodiversity/invasive/publications/pubs/impacts-feral-cats.pdf
>
> >From the executive summary;
>
> "In Australia, in contrast to other parts of the world, feral
> cats are not
> recorded to have impacted on any species of reptiles, amphibians, fish
> or
> invertebrates"
>
> But again I raise the issue of a fallacy of ignorance.  Because
> there isn't
> much evidence, it's difficult to say that cats do or do not have an
> impact.
> We know in some specific cases an impact can be seen, and we know in
> some
> specific cases we weren't able to find an impact.  We don't know
> what the
> general consequences are.
>
>
>
>
>
>
> **
>
> ** _________________________________________________________________
> Frank O'Connor           Birding WA http://birdingwa.iinet.net.au
> Phone : (08) 9386 5694              Email : 
>
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