birding-aus

biogeography of the Otway Range

To: "Peter Menkhorst" <>, <>
Subject: biogeography of the Otway Range
From: "Hugo Phillipps" <>
Date: Fri, 29 Feb 2008 14:30:24 +1100
Hi everybody -

Peter Menkhorst said:
"The usual explanation is that the savannah grasslands of the Victorian Volcanic Plain were a barrier to movement of these missing species [except the Wombat]. The Volcanic Plain extends to the sea in the Werribee-Avalon region and on the Bellarine Peninsula preventing forest-dependent species with little dispersal capability from crossing. "

And maybe the (or some) missing species used to be there before the peak of the last ice-age, but were squeezed out of shrinking habitats and never recolonised. Though I seem to remember some argument a while ago about anecdotal evidence of lyrebirds there.

Cheers,
Hugo

Hugo Phillipps
Queenscliff, Vic
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