[FRIAM] Evolution in vary environments

[Nicholas Thompson]

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" <rec at elf.org>
Subject: Re: [FRIAM] Evolution in varying environments
To: nickthompson at earthlink.net, "The Friday Morning Applied
Complexity Coffee Group" <friam at redfish.com>
Message-ID:
<66d1c98f0708141906p5bef8a7bw88b4f6a224bd0add at mail.gmail.com>
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On 8/14/07, Nicholas Thompson <nickthompson at earthlink.net> 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 (nick at redfish.com)
Professor of Psychology and Ethology, Clark University (nthompson at clarku.edu)
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