"Kooiti MASUDA" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
>
>
> The first compound is with fragmentation of wild life habitat by
> various kinds of "development". It seems that there have been rapid
> climate change before industrialization, for example,
> Dansgaard-Oeschger oscillation during the last interglacial. The
> ecosystem has survived, despite there must have been extinction of
> many individual species. Many others migrated. Now migration is
> hampered by croplands, urban constructions, fences and dams. I think
> that the bleaching of corals is a problem of this category. (I guess
> that migration of such strains of symbiont algae that are tolerant to
> higher temperature is somehow disturbed by human activity.)
I think this is one of the most critical interactions of various global
problems. Biodiversity faces hardship from ecosystem change, of which
climate change is just a subcategory. Where ecosystems may have been able
to adapt, evolve and survive in the face of several degrees warming and
changes in percipitation etc, many (most?) are now facing this problem in an
already compromised state.
The impediments you mention above are yet another compounding factor.
Coby
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