the "staying power" of species


This question comes from a systems background. I'm not a biologist
myself, but it always struck me that evolutionary biologists seem to
have a perspective on adaptation, on ecology and on survival of species
that - to me at least - seems inspired by an explicit awareness of
systemic laws.

Well anyway, what I was asking myself is this:
Some species seem to survive much better than others and without doubt,
biologists must have studied factors in each species that might help to
explain their particular ability to survive in changing environments
etc. My question is: has anyone coined a term for this ability in
general? Or is it deemed to come down to particular (instead of
general) factors in each individual case?

I haven't been able to find any such term in the library or on the
internet. It would be something like the "staying power" of species.
Permanence...? Survivability...? Does anything like this ring a bell?

Cheers
René Duba



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