If memory serves, Madagascar had an anomolous geological history, vis
a vis large-scale tectonic plate movements. That could (if accurate)
be relevant to its evolutionary pattern.
db
On Aug 15, 2007, at 11:42 AM, Nicholas Thompson wrote:
Roger,
Is it possible w e are confusing two variables here? Variability
in the environment and isolation of the environment from others.
Galapagos Islands have both a high level of endemicity and many
missing taxa, no? So, Madagascar is just a rather extreme example
of island geography?
Nick
Nick
Message: 24
Date: Tue, 14 Aug 2007 20:06:54 -0600
From: "Roger Critchlow" <[EMAIL PROTECTED]>
Subject: Re: [FRIAM] Evolution in varying environments
To: [EMAIL PROTECTED], "The Friday Morning Applied
Complexity Coffee Group" <friam@redfish.com>
Message-ID:
<[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"
On 8/14/07, Nicholas Thompson <[EMAIL PROTECTED]> wrote:
>
> Hmm Roger. I always thought that unpredictable environments
contribute
> more within-species diversitity and FEWER species.
>
> Nick
>
Nick --
Apparently a generalization that fits some of the facts.
The communities of Madagascar are characterized by high
levels of endemicity, great species diversity in some taxonomic
groups, and a complete absence of others.
-- rec --
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Nicholas S. Thompson
Research Associate, Redfish Group, Santa Fe, NM ([EMAIL PROTECTED])
Professor of Psychology and Ethology, Clark University
([EMAIL PROTECTED])
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