St. Nick,
Generally the biodiversity hotspots are tropical or semi-tropical island
systems with very high mountains. Such sites have a large spread of unique
climatic and orthographic conditions. In addition, if by chance or migration
continental species land on such ecosystems they
The greatest factor for high endemism is a great number of ecozones first
described Holderidge in 1947. Habitat diversity and isolation tend to create
speciation. cheers Paul
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Examples of countries with high biodiversity or biodiversity hotspots first
described by Meyers: Columbia, Hispanola, Cuba. Paul
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I would suspect either highly rumpled surfaces, or islands, or both.
N
- Original Message -
From:
To: friam@redfish.com;[EMAIL PROTECTED]
Sent: 8/16/2007 9:33:40 PM
Subject: Re: [FRIAM] Evolution in vary environments
Examples of countries with high biodiversity or biodiversity
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 --
I can't tell whether you're worried that I'm misrepresenting the findings of
the paper or that the authors are ignorant of island biogeography.
I said: The second, which was published a day earlier, is about the same
thing, only for real. The environment in Madagascar is diverse, but
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
