defining Endemics

To: "birding aus" <>
Subject: defining Endemics
From: "Simon Mustoe" <>
Date: Mon, 28 Jan 2002 20:41:48 +1100
I sent this to John earlier, but you may as well all read it.

The definition of endemic differs depending on how you use it. It's often
used to describe species that are restricted to a particular country, island
or other geographical area. This is particularly useful if you happen to be
a world-birder and want to know which birds to concentrate on between
flights. Tina MacDonald's site is fantastic and it lists endems for many
countries and a whole wealth of other information at . However, I notice that there does
not appear to be working link to endems for Australia at present which is

The dictionary definition of endemic is something that is 'regularly found
in a particular region'.

[Laurie - strangely your definition is identical to the one that is in my
Oxford English Dictionary].

The ICBP (now BirdLife International) defined
Endemic Bird Areas (EBAs) in 'Putting Biodiversity on the Map' as areas
where there are two or more Restricted Range Species. In this respect,
BirdLife consider a species to be endemic if it has a total range size of
50,000km^2 or less. With country borders changing all the time and an avian
disregard for national sovereignty issues, it is easiest to use a less
arbitrary definition of endemic if you wanna be scientific.




Simon Mustoe - Principle

AES Applied Ecology Solutions Pty Ltd.
59 Joan Avenue
Ferntree Gully
Victoria 3156

Telephone 03 9762 2616
International Telephone +61 (0) 3 9762 2616
Mobile 0405 220830

<Prev in Thread] Current Thread [Next in Thread>

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the birding-aus mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU