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Re: Why Did Mammals Survive the 'K/T Extinction'?
On Thu, Feb 4th, 2010 at 9:21 AM, Joe Cooper <email@example.com> wrote:
> couldn't some of the mammals just go into hibernation?
Only if the impact happened at the right time of year, and even then only for a
few months, so it
wouldn't have been a long-term solution.
If the impact occured during the spring, when animals were emerging from
hibernation, then they'd
lack the fat reserves to be able to return to hibernation immediately. If it
occured soon after
hibernation had begun however, then hibernating animals may have had a slight
although starvation may have still been the norm when they emerged months later
to find few food
Would the world climate at the time have made winter hibernation in lower to
necessary? If there were no freezing winters in the areas most affected by the
impact, there may
not have been any hibernating species around (except perhaps at high altitudes).
GIS Specialist Australian Dinosaurs
Melbourne, Australia http://home.alphalink.com.au/~dannj