Re: RFI Aus Biogeographical region

To: <>, <>
Subject: Re: RFI Aus Biogeographical region
From: "Murray Lord" <>
Date: Sun, 4 Oct 2009 22:31:48 +1100

It depends on how much of a splitter or lumper you are.  The traditional 
division of the world into eight biogeographic regions puts Australia in the 
Australasian region, which includes Australia, New Zealand, New Caledonia, PNG 
and various Indonesian islands.  Where the boundary runs through Indonesia 
depends on whether you are just talking about birds or taking other animals and 
plants into account too (Wallace's line and Lydekker's line are amongst the 
suggestions - I think ornithologists tend to draw the line between Sulawesi and 

There is a discussion in Ian Newton's The Speciation and Biogeography of Birds, 
and any biogeography text would cover it.

Whether you include New Zealand with Australia depends on whether you think one 
should split things into more than eight regions.  The same issue arises as to 
whether Madagascar should really be part of the afrotropical region.  And then 
Australia can be split up into different regions too.

If you want some ideas on ways to split up birding lists, you could have a look 
at how the American Birding Association does it - see


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