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Re: Herbivore protection



At 11:06 PM 5/28/97 -0400, John Bois wrote:
> In a discussion on sci.bio.ethology an alternate
>hypothesis to active nest defence was predator satiation (or is it
>swamping). I argued that in birds, long incubation times would provide
>plenty of time for predator appetites to be recharged.  This would be
>especially true for hadrosaurs which required what, six
>weeks of incubation?
>
>
True to a point.  But there would be a maximum predation *rate* over that
six weeks that would keep the predators satiated.  As long as the total
number of nestlings in the nesting grounds exceeds time*rate, some will,
necessarily, survive.

--------------
May the peace of God be with you.         sarima@ix.netcom.com
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